html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app https://github.com/simonw/datasette/issues/878#issuecomment-973678931,https://api.github.com/repos/simonw/datasette/issues/878,973678931,IC_kwDOBm6k_c46CSlT,9599,2021-11-19T02:51:17Z,2021-11-19T02:51:17Z,OWNER,"OK, I managed to get a table to render! Here's the code I used - I had to copy a LOT of stuff. https://gist.github.com/simonw/281eac9c73b062c3469607ad86470eb2 I'm going to move this work into a new, separate issue.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-973635157,https://api.github.com/repos/simonw/datasette/issues/878,973635157,IC_kwDOBm6k_c46CH5V,9599,2021-11-19T01:07:08Z,2021-11-19T01:07:08Z,OWNER,"This exercise is proving so useful in getting my head around how the enormous and complex `TableView` class works again. Here's where I've got to now - I'm systematically working through the variables that are returned for HTML and for JSON copying across code to get it to work: ```python from datasette.database import QueryInterrupted from datasette.utils import escape_sqlite from datasette.utils.asgi import Response, NotFound, Forbidden from datasette.views.base import DatasetteError from datasette import hookimpl from asyncinject import AsyncInject, inject from pprint import pformat class Table(AsyncInject): @inject async def database(self, request, datasette): # TODO: all that nasty hash resolving stuff can go here db_name = request.url_vars[""db_name""] try: db = datasette.databases[db_name] except KeyError: raise NotFound(f""Database '{db_name}' does not exist"") return db @inject async def table_and_format(self, request, database, datasette): table_and_format = request.url_vars[""table_and_format""] # TODO: be a lot smarter here if ""."" in table_and_format: return table_and_format.split(""."", 2) else: return table_and_format, ""html"" @inject async def main(self, request, database, table_and_format, datasette): # TODO: if this is actually a canned query, dispatch to it table, format = table_and_format is_view = bool(await database.get_view_definition(table)) table_exists = bool(await database.table_exists(table)) if not is_view and not table_exists: raise NotFound(f""Table not found: {table}"") await check_permissions( datasette, request, [ (""view-table"", (database.name, table)), (""view-database"", database.name), ""view-instance"", ], ) private = not await datasette.permission_allowed( None, ""view-table"", (database.name, table), default=True ) pks = await database.primary_keys(table) table_columns = await database.table_columns(table) specified_columns = await columns_to_select(datasette, database, table, request) select_specified_columns = "", "".join( escape_sqlite(t) for t in specified_columns ) select_all_columns = "", "".join(escape_sqlite(t) for t in table_columns) use_rowid = not pks and not is_view if use_rowid: select_specified_columns = f""rowid, {select_specified_columns}"" select_all_columns = f""rowid, {select_all_columns}"" order_by = ""rowid"" order_by_pks = ""rowid"" else: order_by_pks = "", "".join([escape_sqlite(pk) for pk in pks]) order_by = order_by_pks if is_view: order_by = """" nocount = request.args.get(""_nocount"") nofacet = request.args.get(""_nofacet"") if request.args.get(""_shape"") in (""array"", ""object""): nocount = True nofacet = True # Next, a TON of SQL to build where_params and filters and suchlike # skipping that and jumping straight to... where_clauses = [] where_clause = """" if where_clauses: where_clause = f""where {' and '.join(where_clauses)} "" from_sql = ""from {table_name} {where}"".format( table_name=escape_sqlite(table), where=(""where {} "".format("" and "".join(where_clauses))) if where_clauses else """", ) from_sql_params ={} params = {} count_sql = f""select count(*) {from_sql}"" sql_no_order_no_limit = ( ""select {select_all_columns} from {table_name} {where}"".format( select_all_columns=select_all_columns, table_name=escape_sqlite(table), where=where_clause, ) ) page_size = 100 offset = "" offset 0"" sql = ""select {select_specified_columns} from {table_name} {where}{order_by} limit {page_size}{offset}"".format( select_specified_columns=select_specified_columns, table_name=escape_sqlite(table), where=where_clause, order_by=order_by, page_size=page_size + 1, offset=offset, ) # Fetch rows results = await database.execute(sql, params, truncate=True) columns = [r[0] for r in results.description] rows = list(results.rows) # Fetch count filtered_table_rows_count = None if count_sql: try: count_rows = list(await database.execute(count_sql, from_sql_params)) filtered_table_rows_count = count_rows[0][0] except QueryInterrupted: pass vars = { ""json"": { # THIS STUFF is from the regular JSON ""database"": database.name, ""table"": table, ""is_view"": is_view, # ""human_description_en"": human_description_en, ""rows"": rows[:page_size], ""truncated"": results.truncated, ""filtered_table_rows_count"": filtered_table_rows_count, # ""expanded_columns"": expanded_columns, # ""expandable_columns"": expandable_columns, ""columns"": columns, ""primary_keys"": pks, # ""units"": units, ""query"": {""sql"": sql, ""params"": params}, # ""facet_results"": facet_results, # ""suggested_facets"": suggested_facets, # ""next"": next_value and str(next_value) or None, # ""next_url"": next_url, ""private"": private, ""allow_execute_sql"": await datasette.permission_allowed( request.actor, ""execute-sql"", database, default=True ), }, ""html"": { # ... this is the HTML special stuff # ""table_actions"": table_actions, # ""supports_search"": bool(fts_table), # ""search"": search or """", ""use_rowid"": use_rowid, # ""filters"": filters, # ""display_columns"": display_columns, # ""filter_columns"": filter_columns, # ""display_rows"": display_rows, # ""facets_timed_out"": facets_timed_out, # ""sorted_facet_results"": sorted( # facet_results.values(), # key=lambda f: (len(f[""results""]), f[""name""]), # reverse=True, # ), # ""show_facet_counts"": special_args.get(""_facet_size"") == ""max"", # ""extra_wheres_for_ui"": extra_wheres_for_ui, # ""form_hidden_args"": form_hidden_args, # ""is_sortable"": any(c[""sortable""] for c in display_columns), # ""path_with_replaced_args"": path_with_replaced_args, # ""path_with_removed_args"": path_with_removed_args, # ""append_querystring"": append_querystring, ""request"": request, # ""sort"": sort, # ""sort_desc"": sort_desc, ""disable_sort"": is_view, # ""custom_table_templates"": [ # f""_table-{to_css_class(database)}-{to_css_class(table)}.html"", # f""_table-table-{to_css_class(database)}-{to_css_class(table)}.html"", # ""_table.html"", # ], # ""metadata"": metadata, # ""view_definition"": await db.get_view_definition(table), # ""table_definition"": await db.get_table_definition(table), }, } # I'm just trying to get HTML to work for the moment if format == ""json"": return Response.json(dict(vars, locals=locals()), default=repr) else: return Response.html(repr(vars[""html""])) async def view(self, request, datasette): return await self.main(request=request, datasette=datasette) @hookimpl def register_routes(): return [ (r""/t/(?P[^/]+)/(?P[^/]+?$)"", Table().view), ] async def check_permissions(datasette, request, permissions): """"""permissions is a list of (action, resource) tuples or 'action' strings"""""" for permission in permissions: if isinstance(permission, str): action = permission resource = None elif isinstance(permission, (tuple, list)) and len(permission) == 2: action, resource = permission else: assert ( False ), ""permission should be string or tuple of two items: {}"".format( repr(permission) ) ok = await datasette.permission_allowed( request.actor, action, resource=resource, default=None, ) if ok is not None: if ok: return else: raise Forbidden(action) async def columns_to_select(datasette, database, table, request): table_columns = await database.table_columns(table) pks = await database.primary_keys(table) columns = list(table_columns) if ""_col"" in request.args: columns = list(pks) _cols = request.args.getlist(""_col"") bad_columns = [column for column in _cols if column not in table_columns] if bad_columns: raise DatasetteError( ""_col={} - invalid columns"".format("", "".join(bad_columns)), status=400, ) # De-duplicate maintaining order: columns.extend(dict.fromkeys(_cols)) if ""_nocol"" in request.args: # Return all columns EXCEPT these bad_columns = [ column for column in request.args.getlist(""_nocol"") if (column not in table_columns) or (column in pks) ] if bad_columns: raise DatasetteError( ""_nocol={} - invalid columns"".format("", "".join(bad_columns)), status=400, ) tmp_columns = [ column for column in columns if column not in request.args.getlist(""_nocol"") ] columns = tmp_columns return columns ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-973568285,https://api.github.com/repos/simonw/datasette/issues/878,973568285,IC_kwDOBm6k_c46B3kd,9599,2021-11-19T00:29:20Z,2021-11-19T00:29:20Z,OWNER,"This is working! ```python from datasette.utils.asgi import Response from datasette import hookimpl import html from asyncinject import AsyncInject, inject class Table(AsyncInject): @inject async def database(self, request): return request.url_vars[""db_name""] @inject async def main(self, request, database): return Response.html(""Database: {}"".format( html.escape(database) )) async def view(self, request): return await self.main(request=request) @hookimpl def register_routes(): return [ (r""/t/(?P[^/]+)/(?P[^/]+?$)"", Table().view), ] ``` This project will definitely show me if I actually like the `asyncinject` patterns or not.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-973564260,https://api.github.com/repos/simonw/datasette/issues/878,973564260,IC_kwDOBm6k_c46B2lk,9599,2021-11-19T00:27:06Z,2021-11-19T00:27:06Z,OWNER,"Problem: the fancy `asyncinject` stuff inteferes with the fancy Datasette thing that introspects view functions to look for what parameters they take: ```python class Table(asyncinject.AsyncInjectAll): async def view(self, request): return Response.html(""Hello from {}"".format( html.escape(repr(request.url_vars)) )) @hookimpl def register_routes(): return [ (r""/t/(?P[^/]+)/(?P[^/]+?$)"", Table().view), ] ``` This failed with error: ""Table.view() takes 1 positional argument but 2 were given"" So I'm going to use `AsyncInject` and have the `view` function NOT use the `@inject` decorator.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-973554024,https://api.github.com/repos/simonw/datasette/issues/878,973554024,IC_kwDOBm6k_c46B0Fo,9599,2021-11-19T00:21:20Z,2021-11-19T00:21:20Z,OWNER,"That's annoying: it looks like plugins can't use `register_routes()` to over-ride default routes within Datasette itself. This didn't work: ```python from datasette.utils.asgi import Response from datasette import hookimpl import html async def table(request): return Response.html(""Hello from {}"".format( html.escape(repr(request.url_vars)) )) @hookimpl def register_routes(): return [ (r""/(?P[^/]+)/(?P[^/]+?$)"", table), ] ``` I'll use a `/t/` prefix for the moment, but this is probably something I'll fix in Datasette itself later.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-973542284,https://api.github.com/repos/simonw/datasette/issues/878,973542284,IC_kwDOBm6k_c46BxOM,9599,2021-11-19T00:16:44Z,2021-11-19T00:16:44Z,OWNER,"``` Development % cookiecutter gh:simonw/datasette-plugin You've downloaded /Users/simon/.cookiecutters/datasette-plugin before. Is it okay to delete and re-download it? [yes]: yes plugin_name []: table-new description []: New implementation of TableView, see https://github.com/simonw/datasette/issues/878 hyphenated [table-new]: underscored [table_new]: github_username []: simonw author_name []: Simon Willison include_static_directory []: include_templates_directory []: ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-973527870,https://api.github.com/repos/simonw/datasette/issues/878,973527870,IC_kwDOBm6k_c46Bts-,9599,2021-11-19T00:13:43Z,2021-11-19T00:13:43Z,OWNER,"New plan: I'm going to build a brand new implementation of `TableView` starting out as a plugin, using the `register_routes()` plugin hook. It will reuse the existing HTML template but will be a completely new Python implementation, based on `asyncinject`. I'm going to start by just getting the table to show up on the page - then I'll add faceting, suggested facets, filters and so-on. Bonus: I'm going to see if I can get it to work for arbitrary SQL queries too (stretch goal).","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/pull/1516#issuecomment-972858458,https://api.github.com/repos/simonw/datasette/issues/1516,972858458,IC_kwDOBm6k_c45_KRa,22429695,2021-11-18T13:19:01Z,2021-11-18T13:19:01Z,NONE,"# [Codecov](https://codecov.io/gh/simonw/datasette/pull/1516?src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) Report > Merging [#1516](https://codecov.io/gh/simonw/datasette/pull/1516?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (a82c620) into [main](https://codecov.io/gh/simonw/datasette/commit/0156c6b5e52d541e93f0d68e9245f20ae83bc933?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (0156c6b) will **not change** coverage. > The diff coverage is `n/a`. [![Impacted file tree graph](https://codecov.io/gh/simonw/datasette/pull/1516/graphs/tree.svg?width=650&height=150&src=pr&token=eSahVY7kw1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)](https://codecov.io/gh/simonw/datasette/pull/1516?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) ```diff @@ Coverage Diff @@ ## main #1516 +/- ## ======================================= Coverage 91.82% 91.82% ======================================= Files 34 34 Lines 4430 4430 ======================================= Hits 4068 4068 Misses 362 362 ``` ------ [Continue to review full report at Codecov](https://codecov.io/gh/simonw/datasette/pull/1516?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://codecov.io/gh/simonw/datasette/pull/1516?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Last update [0156c6b...a82c620](https://codecov.io/gh/simonw/datasette/pull/1516?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1057340779, https://github.com/simonw/datasette/pull/1514#issuecomment-972852184,https://api.github.com/repos/simonw/datasette/issues/1514,972852184,IC_kwDOBm6k_c45_IvY,49699333,2021-11-18T13:11:15Z,2021-11-18T13:11:15Z,CONTRIBUTOR,Superseded by #1516.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1056117435, https://github.com/simonw/datasette/pull/1514#issuecomment-971575746,https://api.github.com/repos/simonw/datasette/issues/1514,971575746,IC_kwDOBm6k_c456RHC,22429695,2021-11-17T13:18:58Z,2021-11-17T13:18:58Z,NONE,"# [Codecov](https://codecov.io/gh/simonw/datasette/pull/1514?src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) Report > Merging [#1514](https://codecov.io/gh/simonw/datasette/pull/1514?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (b02c35a) into [main](https://codecov.io/gh/simonw/datasette/commit/0156c6b5e52d541e93f0d68e9245f20ae83bc933?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (0156c6b) will **not change** coverage. > The diff coverage is `n/a`. [![Impacted file tree graph](https://codecov.io/gh/simonw/datasette/pull/1514/graphs/tree.svg?width=650&height=150&src=pr&token=eSahVY7kw1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)](https://codecov.io/gh/simonw/datasette/pull/1514?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) ```diff @@ Coverage Diff @@ ## main #1514 +/- ## ======================================= Coverage 91.82% 91.82% ======================================= Files 34 34 Lines 4430 4430 ======================================= Hits 4068 4068 Misses 362 362 ``` ------ [Continue to review full report at Codecov](https://codecov.io/gh/simonw/datasette/pull/1514?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://codecov.io/gh/simonw/datasette/pull/1514?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Last update [0156c6b...b02c35a](https://codecov.io/gh/simonw/datasette/pull/1514?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1056117435, https://github.com/simonw/datasette/pull/1500#issuecomment-971568829,https://api.github.com/repos/simonw/datasette/issues/1500,971568829,IC_kwDOBm6k_c456Pa9,49699333,2021-11-17T13:13:58Z,2021-11-17T13:13:58Z,CONTRIBUTOR,Superseded by #1514.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1041158024, https://github.com/simonw/datasette/issues/878#issuecomment-971209475,https://api.github.com/repos/simonw/datasette/issues/878,971209475,IC_kwDOBm6k_c4543sD,9599,2021-11-17T05:41:42Z,2021-11-17T05:41:42Z,OWNER,"I'm going to build a brand new implementation of the `TableView` class that doesn't subclass `BaseView` at all, instead using `asyncinject`. If I'm lucky that will clean up the grungiest part of the codebase. I can maybe even run the tests against old `TableView` and `TableView2` to check that they behave the same.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-971057553,https://api.github.com/repos/simonw/datasette/issues/878,971057553,IC_kwDOBm6k_c454SmR,9599,2021-11-17T01:40:45Z,2021-11-17T01:40:45Z,OWNER,"I shipped that code as a new library, `asyncinject`: https://pypi.org/project/asyncinject/ - I'll open a new PR to attempt to refactor `TableView` to use it.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/pull/1512#issuecomment-971056169,https://api.github.com/repos/simonw/datasette/issues/1512,971056169,IC_kwDOBm6k_c454SQp,9599,2021-11-17T01:39:44Z,2021-11-17T01:39:44Z,OWNER,Closing this PR because I shipped the code in it as a separate library instead.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055402144, https://github.com/simonw/datasette/pull/1512#issuecomment-971055677,https://api.github.com/repos/simonw/datasette/issues/1512,971055677,IC_kwDOBm6k_c454SI9,9599,2021-11-17T01:39:25Z,2021-11-17T01:39:25Z,OWNER,https://github.com/simonw/asyncinject version 0.1a0 is now live on PyPI: https://pypi.org/project/asyncinject/,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055402144, https://github.com/simonw/datasette/pull/1512#issuecomment-971010724,https://api.github.com/repos/simonw/datasette/issues/1512,971010724,IC_kwDOBm6k_c454HKk,9599,2021-11-17T01:12:22Z,2021-11-17T01:12:22Z,OWNER,I'm going to extract out the `asyncinject` stuff into a separate library.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055402144, https://github.com/simonw/datasette/pull/1512#issuecomment-970718652,https://api.github.com/repos/simonw/datasette/issues/1512,970718652,IC_kwDOBm6k_c452_28,22429695,2021-11-16T22:02:59Z,2021-11-16T23:51:48Z,NONE,"# [Codecov](https://codecov.io/gh/simonw/datasette/pull/1512?src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) Report > Merging [#1512](https://codecov.io/gh/simonw/datasette/pull/1512?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (8f757da) into [main](https://codecov.io/gh/simonw/datasette/commit/0156c6b5e52d541e93f0d68e9245f20ae83bc933?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (0156c6b) will **decrease** coverage by `2.10%`. > The diff coverage is `36.20%`. [![Impacted file tree graph](https://codecov.io/gh/simonw/datasette/pull/1512/graphs/tree.svg?width=650&height=150&src=pr&token=eSahVY7kw1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)](https://codecov.io/gh/simonw/datasette/pull/1512?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) ```diff @@ Coverage Diff @@ ## main #1512 +/- ## ========================================== - Coverage 91.82% 89.72% -2.11% ========================================== Files 34 36 +2 Lines 4430 4604 +174 ========================================== + Hits 4068 4131 +63 - Misses 362 473 +111 ``` | [Impacted Files](https://codecov.io/gh/simonw/datasette/pull/1512?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) | Coverage Δ | | |---|---|---| | [datasette/utils/vendored\_graphlib.py](https://codecov.io/gh/simonw/datasette/pull/1512/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison#diff-ZGF0YXNldHRlL3V0aWxzL3ZlbmRvcmVkX2dyYXBobGliLnB5) | `0.00% <0.00%> (ø)` | | | [datasette/utils/asyncdi.py](https://codecov.io/gh/simonw/datasette/pull/1512/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison#diff-ZGF0YXNldHRlL3V0aWxzL2FzeW5jZGkucHk=) | `96.92% <96.92%> (ø)` | | ------ [Continue to review full report at Codecov](https://codecov.io/gh/simonw/datasette/pull/1512?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://codecov.io/gh/simonw/datasette/pull/1512?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Last update [0156c6b...8f757da](https://codecov.io/gh/simonw/datasette/pull/1512?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055402144, https://github.com/simonw/datasette/pull/1512#issuecomment-970861628,https://api.github.com/repos/simonw/datasette/issues/1512,970861628,IC_kwDOBm6k_c453iw8,9599,2021-11-16T23:46:07Z,2021-11-16T23:46:07Z,OWNER,"I made the changes locally and tested them with Python 3.6 like so: ``` cd /tmp mkdir v cd v pipenv shell --python=python3.6 cd ~/Dropbox/Development/datasette pip install -e '.[test]' pytest tests/test_asyncdi.py ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055402144, https://github.com/simonw/datasette/pull/1512#issuecomment-970857411,https://api.github.com/repos/simonw/datasette/issues/1512,970857411,IC_kwDOBm6k_c453hvD,9599,2021-11-16T23:43:21Z,2021-11-16T23:43:21Z,OWNER,"``` E File ""/home/runner/work/datasette/datasette/datasette/utils/vendored_graphlib.py"", line 56 E if (result := self._node2info.get(node)) is None: E ^ E SyntaxError: invalid syntax ``` Oh no - the vendored code I use has `:=` so doesn't work on Python 3.6! Will have to backport it more thoroughly.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055402144, https://github.com/simonw/datasette/issues/1513#issuecomment-970855084,https://api.github.com/repos/simonw/datasette/issues/1513,970855084,IC_kwDOBm6k_c453hKs,9599,2021-11-16T23:41:46Z,2021-11-16T23:41:46Z,OWNER,Conclusion: using a giant convoluted CTE and UNION ALL query to attempt to calculate facets at the same time as retrieving rows is a net LOSS for performance! Very surprised to see that.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970853917,https://api.github.com/repos/simonw/datasette/issues/1513,970853917,IC_kwDOBm6k_c453g4d,9599,2021-11-16T23:41:01Z,2021-11-16T23:41:01Z,OWNER,"One very interesting difference between the two: on the single giant query page: ```json { ""request_duration_ms"": 376.4317020000476, ""sum_trace_duration_ms"": 370.0828700000329, ""num_traces"": 5 } ``` And on the page that uses separate queries: ```json { ""request_duration_ms"": 819.012272000009, ""sum_trace_duration_ms"": 201.52852100000018, ""num_traces"": 19 } ``` The separate pages page takes 819ms total to render the page, but spends 201ms across 19 SQL queries. The single big query takes 376ms total to render the page, spending 370ms in 5 queries
Those 5 queries, if you're interested ```sql select database_name, schema_version from databases PRAGMA schema_version PRAGMA schema_version explain with cte as (\r\n select rowid, date, county, state, fips, cases, deaths\r\n from ny_times_us_counties\r\n),\r\ntruncated as (\r\n select null as _facet, null as facet_name, null as facet_count, rowid, date, county, state, fips, cases, deaths\r\n from cte order by date desc limit 4\r\n),\r\nstate_facet as (\r\n select 'state' as _facet, state as facet_name, count(*) as facet_count,\r\n null, null, null, null, null, null, null\r\n from cte group by facet_name order by facet_count desc limit 3\r\n),\r\nfips_facet as (\r\n select 'fips' as _facet, fips as facet_name, count(*) as facet_count,\r\n null, null, null, null, null, null, null\r\n from cte group by facet_name order by facet_count desc limit 3\r\n),\r\ncounty_facet as (\r\n select 'county' as _facet, county as facet_name, count(*) as facet_count,\r\n null, null, null, null, null, null, null\r\n from cte group by facet_name order by facet_count desc limit 3\r\n)\r\nselect * from truncated\r\nunion all select * from state_facet\r\nunion all select * from fips_facet\r\nunion all select * from county_facet with cte as (\r\n select rowid, date, county, state, fips, cases, deaths\r\n from ny_times_us_counties\r\n),\r\ntruncated as (\r\n select null as _facet, null as facet_name, null as facet_count, rowid, date, county, state, fips, cases, deaths\r\n from cte order by date desc limit 4\r\n),\r\nstate_facet as (\r\n select 'state' as _facet, state as facet_name, count(*) as facet_count,\r\n null, null, null, null, null, null, null\r\n from cte group by facet_name order by facet_count desc limit 3\r\n),\r\nfips_facet as (\r\n select 'fips' as _facet, fips as facet_name, count(*) as facet_count,\r\n null, null, null, null, null, null, null\r\n from cte group by facet_name order by facet_count desc limit 3\r\n),\r\ncounty_facet as (\r\n select 'county' as _facet, county as facet_name, count(*) as facet_count,\r\n null, null, null, null, null, null, null\r\n from cte group by facet_name order by facet_count desc limit 3\r\n)\r\nselect * from truncated\r\nunion all select * from state_facet\r\nunion all select * from fips_facet\r\nunion all select * from county_facet ```
All of that additional non-SQL overhead must be stuff relating to Python and template rendering code running on the page. I'm really surprised at how much overhead that is! This is worth researching separately.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970845844,https://api.github.com/repos/simonw/datasette/issues/1513,970845844,IC_kwDOBm6k_c453e6U,9599,2021-11-16T23:35:38Z,2021-11-16T23:35:38Z,OWNER,"I tried adding `cases > 10000` but the SQL query now takes too long - so moving this to my laptop. ``` cd /tmp wget https://covid-19.datasettes.com/covid.db datasette covid.db \ --setting facet_time_limit_ms 10000 \ --setting sql_time_limit_ms 10000 \ --setting trace_debug 1 ``` `http://127.0.0.1:8006/covid/ny_times_us_counties?_trace=1&_facet_size=3&_size=2&cases__gt=10000` shows in the traces: ```json [ { ""type"": ""sql"", ""start"": 12.693033525, ""end"": 12.694056904, ""duration_ms"": 1.0233789999993803, ""traceback"": [ "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/base.py\"", line 262, in get\n return await self.view_get(\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/base.py\"", line 477, in view_get\n response_or_template_contexts = await self.data(\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/table.py\"", line 705, in data\n results = await db.execute(sql, params, truncate=True, **extra_args)\n"" ], ""database"": ""covid"", ""sql"": ""select rowid, date, county, state, fips, cases, deaths from ny_times_us_counties where \""cases\"" > :p0 order by rowid limit 3"", ""params"": { ""p0"": 10000 } }, { ""type"": ""sql"", ""start"": 12.694285093, ""end"": 12.814936275, ""duration_ms"": 120.65118200000136, ""traceback"": [ "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/base.py\"", line 262, in get\n return await self.view_get(\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/base.py\"", line 477, in view_get\n response_or_template_contexts = await self.data(\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/table.py\"", line 723, in data\n count_rows = list(await db.execute(count_sql, from_sql_params))\n"" ], ""database"": ""covid"", ""sql"": ""select count(*) from ny_times_us_counties where \""cases\"" > :p0"", ""params"": { ""p0"": 10000 } }, { ""type"": ""sql"", ""start"": 12.818812089, ""end"": 12.851172544, ""duration_ms"": 32.360455000000954, ""traceback"": [ "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/table.py\"", line 856, in data\n suggested_facets.extend(await facet.suggest())\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/facets.py\"", line 164, in suggest\n distinct_values = await self.ds.execute(\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/app.py\"", line 634, in execute\n return await self.databases[db_name].execute(\n"" ], ""database"": ""covid"", ""sql"": ""select county, count(*) as n from (\n select rowid, date, county, state, fips, cases, deaths from ny_times_us_counties where \""cases\"" > :p0 \n ) where county is not null\n group by county\n limit 4"", ""params"": { ""p0"": 10000 } }, { ""type"": ""sql"", ""start"": 12.851418868, ""end"": 12.871268359, ""duration_ms"": 19.84949100000044, ""traceback"": [ "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/table.py\"", line 856, in data\n suggested_facets.extend(await facet.suggest())\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/facets.py\"", line 164, in suggest\n distinct_values = await self.ds.execute(\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/app.py\"", line 634, in execute\n return await self.databases[db_name].execute(\n"" ], ""database"": ""covid"", ""sql"": ""select state, count(*) as n from (\n select rowid, date, county, state, fips, cases, deaths from ny_times_us_counties where \""cases\"" > :p0 \n ) where state is not null\n group by state\n limit 4"", ""params"": { ""p0"": 10000 } }, { ""type"": ""sql"", ""start"": 12.871497655, ""end"": 12.897715027, ""duration_ms"": 26.217371999999628, ""traceback"": [ "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/views/table.py\"", line 856, in data\n suggested_facets.extend(await facet.suggest())\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/facets.py\"", line 164, in suggest\n distinct_values = await self.ds.execute(\n"", "" File \""/usr/local/Cellar/datasette/0.58.1/libexec/lib/python3.9/site-packages/datasette/app.py\"", line 634, in execute\n return await self.databases[db_name].execute(\n"" ], ""database"": ""covid"", ""sql"": ""select fips, count(*) as n from (\n select rowid, date, county, state, fips, cases, deaths from ny_times_us_counties where \""cases\"" > :p0 \n ) where fips is not null\n group by fips\n limit 4"", ""params"": { ""p0"": 10000 } } ] ``` So that's: ``` fetch rows: 1.0233789999993803 ms count: 120.65118200000136 ms facet county: 32.360455000000954 ms facet state: 19.84949100000044 ms facet fips: 26.217371999999628 ms ``` = 200.1 ms total Compared to: `http://127.0.0.1:8006/covid?sql=with+cte+as+(%0D%0A++select+rowid%2C+date%2C+county%2C+state%2C+fips%2C+cases%2C+deaths%0D%0A++from+ny_times_us_counties%0D%0A)%2C%0D%0Atruncated+as+(%0D%0A++select+null+as+_facet%2C+null+as+facet_name%2C+null+as+facet_count%2C+rowid%2C+date%2C+county%2C+state%2C+fips%2C+cases%2C+deaths%0D%0A++from+cte+order+by+date+desc+limit+4%0D%0A)%2C%0D%0Astate_facet+as+(%0D%0A++select+%27state%27+as+_facet%2C+state+as+facet_name%2C+count(*)+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A)%2C%0D%0Afips_facet+as+(%0D%0A++select+%27fips%27+as+_facet%2C+fips+as+facet_name%2C+count(*)+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A)%2C%0D%0Acounty_facet+as+(%0D%0A++select+%27county%27+as+_facet%2C+county+as+facet_name%2C+count(*)+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A)%0D%0Aselect+*+from+truncated%0D%0Aunion+all+select+*+from+state_facet%0D%0Aunion+all+select+*+from+fips_facet%0D%0Aunion+all+select+*+from+county_facet&_trace=1` Which is 353ms total. The separate queries ran faster! Really surprising result there.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970828568,https://api.github.com/repos/simonw/datasette/issues/1513,970828568,IC_kwDOBm6k_c453asY,9599,2021-11-16T23:27:11Z,2021-11-16T23:27:11Z,OWNER,One last experiment: I'm going to try running an expensive query in the CTE portion.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970827674,https://api.github.com/repos/simonw/datasette/issues/1513,970827674,IC_kwDOBm6k_c453aea,9599,2021-11-16T23:26:58Z,2021-11-16T23:26:58Z,OWNER,"With trace. https://covid-19.datasettes.com/covid/ny_times_us_counties?_trace=1&_facet_size=3&_size=2&_trace=1 shows the following: ``` fetch rows: 0.41762600005768036 ms facet state: 284.30423800000426 ms facet county: 273.2565999999679 ms facet fips: 197.80996999998024 ms ``` = 755.78843400001ms total It didn't run a count because that's the homepage and the count is cached. So I dropped the count from the query and ran it: https://covid-19.datasettes.com/covid?sql=with+cte+as+(%0D%0A++select+rowid%2C+date%2C+county%2C+state%2C+fips%2C+cases%2C+deaths%0D%0A++from+ny_times_us_counties%0D%0A)%2C%0D%0Atruncated+as+(%0D%0A++select+null+as+_facet%2C+null+as+facet_name%2C+null+as+facet_count%2C+rowid%2C+date%2C+county%2C+state%2C+fips%2C+cases%2C+deaths%0D%0A++from+cte+order+by+date+desc+limit+4%0D%0A)%2C%0D%0Astate_facet+as+(%0D%0A++select+%27state%27+as+_facet%2C+state+as+facet_name%2C+count(*)+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A)%2C%0D%0Afips_facet+as+(%0D%0A++select+%27fips%27+as+_facet%2C+fips+as+facet_name%2C+count(*)+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A)%2C%0D%0Acounty_facet+as+(%0D%0A++select+%27county%27+as+_facet%2C+county+as+facet_name%2C+count(*)+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A)%0D%0Aselect+*+from+truncated%0D%0Aunion+all+select+*+from+state_facet%0D%0Aunion+all+select+*+from+fips_facet%0D%0Aunion+all+select+*+from+county_facet&_trace=1 Shows 649.4359889999259 ms for the query - compared to 755.78843400001ms for the separate. So it saved about 100ms. Still not a huge difference though! ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970780866,https://api.github.com/repos/simonw/datasette/issues/1513,970780866,IC_kwDOBm6k_c453PDC,9599,2021-11-16T23:01:57Z,2021-11-16T23:01:57Z,OWNER,"One disadvantage to this approach: if you have a SQL time limit of 1s and it takes 0.9s to return the rows but then 0.5s to calculate each of the requested facets the entire query will exceed the time limit. Could work around this by catching that error and then re-running the query just for the rows, but that would result in the user having to wait longer for the results. Could try to remember if that has happened using an in-memory Python data structure and skip the faceting optimization if it's caused problems in the past? That seems a bit gross. Maybe this becomes an opt-in optimization you can request in your `metadata.json` setting for that table, which massively increases the time limit? That's a bit weird too - now there are two separate implementations of the faceting logic, which had better have a REALLY big pay-off to be worth maintaining. What if we kept the query that returns the rows to be displayed on the page separate from the facets, but then executed all of the facets together using this method such that the `cte` only (presumably) has to be calculated once? That would still lead to multiple facets potentially exceeding the SQL time limit when single facets would not have. Maybe a better optimization would be to move facets to happening via `fetch()` calls from the client, so the user gets to see their rows instantly and the facets then appear as and when they are available (though it would cause page jank). ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970766486,https://api.github.com/repos/simonw/datasette/issues/1513,970766486,IC_kwDOBm6k_c453LiW,9599,2021-11-16T22:52:56Z,2021-11-16T22:56:07Z,OWNER,"https://covid-19.datasettes.com/covid is 805.2MB https://covid-19.datasettes.com/covid/ny_times_us_counties?_trace=1&_facet_size=3&_size=2 Equivalent SQL: https://covid-19.datasettes.com/covid?sql=with+cte+as+%28%0D%0A++select+rowid%2C+date%2C+county%2C+state%2C+fips%2C+cases%2C+deaths%0D%0A++from+ny_times_us_counties%0D%0A%29%2C%0D%0Atruncated+as+%28%0D%0A++select+null+as+_facet%2C+null+as+facet_name%2C+null+as+facet_count%2C+rowid%2C+date%2C+county%2C+state%2C+fips%2C+cases%2C+deaths%0D%0A++from+cte+order+by+date+desc+limit+4%0D%0A%29%2C%0D%0Astate_facet+as+%28%0D%0A++select+%27state%27+as+_facet%2C+state+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Afips_facet+as+%28%0D%0A++select+%27fips%27+as+_facet%2C+fips+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Acounty_facet+as+%28%0D%0A++select+%27county%27+as+_facet%2C+county+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Atotal_count+as+%28%0D%0A++select+%27COUNT%27+as+_facet%2C+%27%27+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte%0D%0A%29%0D%0Aselect+*+from+truncated%0D%0Aunion+all+select+*+from+state_facet%0D%0Aunion+all+select+*+from+fips_facet%0D%0Aunion+all+select+*+from+county_facet%0D%0Aunion+all+select+*+from+total_count ```sql with cte as ( select rowid, date, county, state, fips, cases, deaths from ny_times_us_counties ), truncated as ( select null as _facet, null as facet_name, null as facet_count, rowid, date, county, state, fips, cases, deaths from cte order by date desc limit 4 ), state_facet as ( select 'state' as _facet, state as facet_name, count(*) as facet_count, null, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), fips_facet as ( select 'fips' as _facet, fips as facet_name, count(*) as facet_count, null, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), county_facet as ( select 'county' as _facet, county as facet_name, count(*) as facet_count, null, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), total_count as ( select 'COUNT' as _facet, '' as facet_name, count(*) as facet_count, null, null, null, null, null, null, null from cte ) select * from truncated union all select * from state_facet union all select * from fips_facet union all select * from county_facet union all select * from total_count ``` _facet | facet_name | facet_count | rowid | date | county | state | fips | cases | deaths -- | -- | -- | -- | -- | -- | -- | -- | -- | --   |   |   | 1917344 | 2021-11-15 | Autauga | Alabama | 1001 | 10407 | 154   |   |   | 1917345 | 2021-11-15 | Baldwin | Alabama | 1003 | 37875 | 581   |   |   | 1917346 | 2021-11-15 | Barbour | Alabama | 1005 | 3648 | 79   |   |   | 1917347 | 2021-11-15 | Bibb | Alabama | 1007 | 4317 | 92 state | Texas | 148028 |   |   |   |   |   |   |   state | Georgia | 96249 |   |   |   |   |   |   |   state | Virginia | 79315 |   |   |   |   |   |   |   fips |   | 17580 |   |   |   |   |   |   |   fips | 53061 | 665 |   |   |   |   |   |   |   fips | 17031 | 662 |   |   |   |   |   |   |   county | Washington | 18666 |   |   |   |   |   |   |   county | Unknown | 15840 |   |   |   |   |   |   |   county | Jefferson | 15637 |   |   |   |   |   |   |   COUNT |   | 1920593 |   |   |   |   |   |   |  ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970770304,https://api.github.com/repos/simonw/datasette/issues/1513,970770304,IC_kwDOBm6k_c453MeA,9599,2021-11-16T22:55:19Z,2021-11-16T22:55:19Z,OWNER,(One thing I really like about this pattern is that it should work exactly the same when used to facet the results of arbitrary SQL queries as it does when faceting results from the table page.),"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970767952,https://api.github.com/repos/simonw/datasette/issues/1513,970767952,IC_kwDOBm6k_c453L5Q,9599,2021-11-16T22:53:52Z,2021-11-16T22:53:52Z,OWNER,It's going to take another 15 minutes for the build to finish and deploy the version with `_trace=1`: https://github.com/simonw/covid-19-datasette/actions/runs/1469150112,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970758179,https://api.github.com/repos/simonw/datasette/issues/1513,970758179,IC_kwDOBm6k_c453Jgj,9599,2021-11-16T22:47:38Z,2021-11-16T22:47:38Z,OWNER,"Trace now enabled: https://global-power-plants.datasettes.com/global-power-plants/global-power-plants?_facet_size=3&_size=2&_nocount=1&_trace=1 Here are the relevant traces: ```json [ { ""type"": ""sql"", ""start"": 31.214430154, ""end"": 31.214817089, ""duration_ms"": 0.3869350000016425, ""traceback"": [ "" File \""/usr/local/lib/python3.8/site-packages/datasette/views/base.py\"", line 262, in get\n return await self.view_get(\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/views/base.py\"", line 477, in view_get\n response_or_template_contexts = await self.data(\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/views/table.py\"", line 705, in data\n results = await db.execute(sql, params, truncate=True, **extra_args)\n"" ], ""database"": ""global-power-plants"", ""sql"": ""select rowid, country, country_long, name, gppd_idnr, capacity_mw, latitude, longitude, primary_fuel, other_fuel1, other_fuel2, other_fuel3, commissioning_year, owner, source, url, geolocation_source, wepp_id, year_of_capacity_data, generation_gwh_2013, generation_gwh_2014, generation_gwh_2015, generation_gwh_2016, generation_gwh_2017, generation_data_source, estimated_generation_gwh from [global-power-plants] order by rowid limit 3"", ""params"": {} }, { ""type"": ""sql"", ""start"": 31.215234586, ""end"": 31.220110342, ""duration_ms"": 4.875756000000564, ""traceback"": [ "" File \""/usr/local/lib/python3.8/site-packages/datasette/views/table.py\"", line 760, in data\n ) = await facet.facet_results()\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/facets.py\"", line 212, in facet_results\n facet_rows_results = await self.ds.execute(\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/app.py\"", line 634, in execute\n return await self.databases[db_name].execute(\n"" ], ""database"": ""global-power-plants"", ""sql"": ""select country_long as value, count(*) as count from (\n select rowid, country, country_long, name, gppd_idnr, capacity_mw, latitude, longitude, primary_fuel, other_fuel1, other_fuel2, other_fuel3, commissioning_year, owner, source, url, geolocation_source, wepp_id, year_of_capacity_data, generation_gwh_2013, generation_gwh_2014, generation_gwh_2015, generation_gwh_2016, generation_gwh_2017, generation_data_source, estimated_generation_gwh from [global-power-plants] \n )\n where country_long is not null\n group by country_long order by count desc, value limit 4"", ""params"": [] }, { ""type"": ""sql"", ""start"": 31.221062485, ""end"": 31.228968364, ""duration_ms"": 7.905878999999061, ""traceback"": [ "" File \""/usr/local/lib/python3.8/site-packages/datasette/views/table.py\"", line 760, in data\n ) = await facet.facet_results()\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/facets.py\"", line 212, in facet_results\n facet_rows_results = await self.ds.execute(\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/app.py\"", line 634, in execute\n return await self.databases[db_name].execute(\n"" ], ""database"": ""global-power-plants"", ""sql"": ""select owner as value, count(*) as count from (\n select rowid, country, country_long, name, gppd_idnr, capacity_mw, latitude, longitude, primary_fuel, other_fuel1, other_fuel2, other_fuel3, commissioning_year, owner, source, url, geolocation_source, wepp_id, year_of_capacity_data, generation_gwh_2013, generation_gwh_2014, generation_gwh_2015, generation_gwh_2016, generation_gwh_2017, generation_data_source, estimated_generation_gwh from [global-power-plants] \n )\n where owner is not null\n group by owner order by count desc, value limit 4"", ""params"": [] }, { ""type"": ""sql"", ""start"": 31.229809757, ""end"": 31.253902162, ""duration_ms"": 24.09240499999754, ""traceback"": [ "" File \""/usr/local/lib/python3.8/site-packages/datasette/views/table.py\"", line 760, in data\n ) = await facet.facet_results()\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/facets.py\"", line 212, in facet_results\n facet_rows_results = await self.ds.execute(\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/app.py\"", line 634, in execute\n return await self.databases[db_name].execute(\n"" ], ""database"": ""global-power-plants"", ""sql"": ""select primary_fuel as value, count(*) as count from (\n select rowid, country, country_long, name, gppd_idnr, capacity_mw, latitude, longitude, primary_fuel, other_fuel1, other_fuel2, other_fuel3, commissioning_year, owner, source, url, geolocation_source, wepp_id, year_of_capacity_data, generation_gwh_2013, generation_gwh_2014, generation_gwh_2015, generation_gwh_2016, generation_gwh_2017, generation_data_source, estimated_generation_gwh from [global-power-plants] \n )\n where primary_fuel is not null\n group by primary_fuel order by count desc, value limit 4"", ""params"": [] }, { ""type"": ""sql"", ""start"": 31.255699745, ""end"": 31.256243889, ""duration_ms"": 0.544143999999136, ""traceback"": [ "" File \""/usr/local/lib/python3.8/site-packages/datasette/facets.py\"", line 145, in suggest\n row_count = await self.get_row_count()\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/facets.py\"", line 132, in get_row_count\n await self.ds.execute(\n"", "" File \""/usr/local/lib/python3.8/site-packages/datasette/app.py\"", line 634, in execute\n return await self.databases[db_name].execute(\n"" ], ""database"": ""global-power-plants"", ""sql"": ""select count(*) from (select rowid, country, country_long, name, gppd_idnr, capacity_mw, latitude, longitude, primary_fuel, other_fuel1, other_fuel2, other_fuel3, commissioning_year, owner, source, url, geolocation_source, wepp_id, year_of_capacity_data, generation_gwh_2013, generation_gwh_2014, generation_gwh_2015, generation_gwh_2016, generation_gwh_2017, generation_data_source, estimated_generation_gwh from [global-power-plants] )"", ""params"": [] } ] ``` ``` fetch rows: 0.3869350000016425 ms facet country_long: 4.875756000000564 ms facet owner: 7.905878999999061 ms facet primary_fuel: 24.09240499999754 ms count: 0.544143999999136 ms ``` Total = 37.8ms I modified the query to include the total count as well: https://global-power-plants.datasettes.com/global-power-plants?sql=with+cte+as+%28%0D%0A++select+rowid%2C+country%2C+country_long%2C+name%2C+owner%2C+primary_fuel%0D%0A++from+%5Bglobal-power-plants%5D%0D%0A%29%2C%0D%0Atruncated+as+%28%0D%0A++select+null+as+_facet%2C+null+as+facet_name%2C+null+as+facet_count%2C+rowid%2C+country%2C+country_long%2C+name%2C+owner%2C+primary_fuel%0D%0A++from+cte+order+by+rowid+limit+4%0D%0A%29%2C%0D%0Acountry_long_facet+as+%28%0D%0A++select+%27country_long%27+as+_facet%2C+country_long+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Aowner_facet+as+%28%0D%0A++select+%27owner%27+as+_facet%2C+owner+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Aprimary_fuel_facet+as+%28%0D%0A++select+%27primary_fuel%27+as+_facet%2C+primary_fuel+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Atotal_count+as+%28%0D%0A++select+%27COUNT%27+as+_facet%2C+%27%27+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte%0D%0A%29%0D%0Aselect+*+from+truncated%0D%0Aunion+all+select+*+from+country_long_facet%0D%0Aunion+all+select+*+from+owner_facet%0D%0Aunion+all+select+*+from+primary_fuel_facet%0D%0Aunion+all+select+*+from+total_count&_trace=1 ```sql with cte as ( select rowid, country, country_long, name, owner, primary_fuel from [global-power-plants] ), truncated as ( select null as _facet, null as facet_name, null as facet_count, rowid, country, country_long, name, owner, primary_fuel from cte order by rowid limit 4 ), country_long_facet as ( select 'country_long' as _facet, country_long as facet_name, count(*) as facet_count, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), owner_facet as ( select 'owner' as _facet, owner as facet_name, count(*) as facet_count, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), primary_fuel_facet as ( select 'primary_fuel' as _facet, primary_fuel as facet_name, count(*) as facet_count, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), total_count as ( select 'COUNT' as _facet, '' as facet_name, count(*) as facet_count, null, null, null, null, null, null from cte ) select * from truncated union all select * from country_long_facet union all select * from owner_facet union all select * from primary_fuel_facet union all select * from total_count ``` The trace says that query took 34.801436999998714 ms. To my huge surprise, this convoluted optimization only shaves the sum query time down from 37.8ms to 34.8ms! That entire database file is just 11.1 MB though. Maybe it would make a meaningful difference on something larger?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970742415,https://api.github.com/repos/simonw/datasette/issues/1513,970742415,IC_kwDOBm6k_c453FqP,9599,2021-11-16T22:37:14Z,2021-11-16T22:37:14Z,OWNER,"The query takes 42.794ms to run. Here's the equivalent page using separate queries: https://global-power-plants.datasettes.com/global-power-plants/global-power-plants?_facet_size=3&_size=2&_nocount=1 Annoyingly I can't disable facet suggestions but keep facets. I'm going to turn on tracing so I can see how long the separate queries took.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/issues/1513#issuecomment-970738130,https://api.github.com/repos/simonw/datasette/issues/1513,970738130,IC_kwDOBm6k_c453EnS,9599,2021-11-16T22:32:19Z,2021-11-16T22:32:19Z,OWNER,"I came up with the following query which seems to work! ```sql with cte as ( select rowid, country, country_long, name, owner, primary_fuel from [global-power-plants] ), truncated as ( select null as _facet, null as facet_name, null as facet_count, rowid, country, country_long, name, owner, primary_fuel from cte order by rowid limit 4 ), country_long_facet as ( select 'country_long' as _facet, country_long as facet_name, count(*) as facet_count, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), owner_facet as ( select 'owner' as _facet, owner as facet_name, count(*) as facet_count, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ), primary_fuel_facet as ( select 'primary_fuel' as _facet, primary_fuel as facet_name, count(*) as facet_count, null, null, null, null, null, null from cte group by facet_name order by facet_count desc limit 3 ) select * from truncated union all select * from country_long_facet union all select * from owner_facet union all select * from primary_fuel_facet ``` (Limits should be 101, 31, 31, 31 but I reduced size to get a shorter example table). Results [look like this](https://global-power-plants.datasettes.com/global-power-plants?sql=with+cte+as+%28%0D%0A++select+rowid%2C+country%2C+country_long%2C+name%2C+owner%2C+primary_fuel%0D%0A++from+%5Bglobal-power-plants%5D%0D%0A%29%2C%0D%0Atruncated+as+%28%0D%0A++select+null+as+_facet%2C+null+as+facet_name%2C+null+as+facet_count%2C+rowid%2C+country%2C+country_long%2C+name%2C+owner%2C+primary_fuel%0D%0A++from+cte+order+by+rowid+limit+4%0D%0A%29%2C%0D%0Acountry_long_facet+as+%28%0D%0A++select+%27country_long%27+as+_facet%2C+country_long+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Aowner_facet+as+%28%0D%0A++select+%27owner%27+as+_facet%2C+owner+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%2C%0D%0Aprimary_fuel_facet+as+%28%0D%0A++select+%27primary_fuel%27+as+_facet%2C+primary_fuel+as+facet_name%2C+count%28*%29+as+facet_count%2C%0D%0A++null%2C+null%2C+null%2C+null%2C+null%2C+null%0D%0A++from+cte+group+by+facet_name+order+by+facet_count+desc+limit+3%0D%0A%29%0D%0Aselect+*+from+truncated%0D%0Aunion+all+select+*+from+country_long_facet%0D%0Aunion+all+select+*+from+owner_facet%0D%0Aunion+all+select+*+from+primary_fuel_facet): _facet | facet_name | facet_count | rowid | country | country_long | name | owner | primary_fuel -- | -- | -- | -- | -- | -- | -- | -- | --   |   |   | 1 | AFG | Afghanistan | Kajaki Hydroelectric Power Plant Afghanistan |   | Hydro   |   |   | 2 | AFG | Afghanistan | Kandahar DOG |   | Solar   |   |   | 3 | AFG | Afghanistan | Kandahar JOL |   | Solar   |   |   | 4 | AFG | Afghanistan | Mahipar Hydroelectric Power Plant Afghanistan |   | Hydro country_long | United States of America | 8688 |   |   |   |   |   |   country_long | China | 4235 |   |   |   |   |   |   country_long | United Kingdom | 2603 |   |   |   |   |   |   owner |   | 14112 |   |   |   |   |   |   owner | Lightsource Renewable Energy | 120 |   |   |   |   |   |   owner | Cypress Creek Renewables | 109 |   |   |   |   |   |   primary_fuel | Solar | 9662 |   |   |   |   |   |   primary_fuel | Hydro | 7155 |   |   |   |   |   |   primary_fuel | Wind | 5188 |   |   |   |   |   |   This is a neat proof of concept. ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055469073, https://github.com/simonw/datasette/pull/1512#issuecomment-970718337,https://api.github.com/repos/simonw/datasette/issues/1512,970718337,IC_kwDOBm6k_c452_yB,9599,2021-11-16T22:02:30Z,2021-11-16T22:02:30Z,OWNER,"I've decided to make the clever `asyncio` dependency injection opt-in - so you can either decorate with `@inject` or you can set `inject_all = True` on the class - for example: ```python import asyncio from datasette.utils.asyncdi import AsyncBase, inject class Simple(AsyncBase): def __init__(self): self.log = [] @inject async def two(self): self.log.append(""two"") @inject async def one(self, two): self.log.append(""one"") return self.log async def not_inject(self, one, two): return one + two class Complex(AsyncBase): inject_all = True def __init__(self): self.log = [] async def b(self): self.log.append(""b"") async def a(self, b): self.log.append(""a"") async def go(self, a): self.log.append(""go"") return self.log ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1055402144, https://github.com/simonw/datasette/issues/878#issuecomment-970712713,https://api.github.com/repos/simonw/datasette/issues/878,970712713,IC_kwDOBm6k_c452-aJ,9599,2021-11-16T21:54:33Z,2021-11-16T21:54:33Z,OWNER,I'm going to continue working on this in a PR.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-970705738,https://api.github.com/repos/simonw/datasette/issues/878,970705738,IC_kwDOBm6k_c4528tK,9599,2021-11-16T21:44:31Z,2021-11-16T21:44:31Z,OWNER,Wrote a TIL about what I learned using `TopologicalSorter`: https://til.simonwillison.net/python/graphlib-topologicalsorter,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-970673085,https://api.github.com/repos/simonw/datasette/issues/878,970673085,IC_kwDOBm6k_c4520u9,9599,2021-11-16T20:58:24Z,2021-11-16T20:58:24Z,OWNER,"New test: ```python class Complex(AsyncBase): def __init__(self): self.log = [] async def d(self): await asyncio.sleep(random() * 0.1) print(""LOG: d"") self.log.append(""d"") async def c(self): await asyncio.sleep(random() * 0.1) print(""LOG: c"") self.log.append(""c"") async def b(self, c, d): print(""LOG: b"") self.log.append(""b"") async def a(self, b, c): print(""LOG: a"") self.log.append(""a"") async def go(self, a): print(""LOG: go"") self.log.append(""go"") return self.log @pytest.mark.asyncio async def test_complex(): result = await Complex().go() # 'c' should only be called once assert tuple(result) in ( # c and d could happen in either order (""c"", ""d"", ""b"", ""a"", ""go""), (""d"", ""c"", ""b"", ""a"", ""go""), ) ``` And this code passes it: ```python import asyncio from functools import wraps import inspect try: import graphlib except ImportError: from . import vendored_graphlib as graphlib class AsyncMeta(type): def __new__(cls, name, bases, attrs): # Decorate any items that are 'async def' methods _registry = {} new_attrs = {""_registry"": _registry} for key, value in attrs.items(): if inspect.iscoroutinefunction(value) and not value.__name__ == ""resolve"": new_attrs[key] = make_method(value) _registry[key] = new_attrs[key] else: new_attrs[key] = value # Gather graph for later dependency resolution graph = { key: { p for p in inspect.signature(method).parameters.keys() if p != ""self"" and not p.startswith(""_"") } for key, method in _registry.items() } new_attrs[""_graph""] = graph return super().__new__(cls, name, bases, new_attrs) def make_method(method): parameters = inspect.signature(method).parameters.keys() @wraps(method) async def inner(self, _results=None, **kwargs): print(""\n{}.{}({}) _results={}"".format(self, method.__name__, kwargs, _results)) # Any parameters not provided by kwargs are resolved from registry to_resolve = [p for p in parameters if p not in kwargs and p != ""self""] missing = [p for p in to_resolve if p not in self._registry] assert ( not missing ), ""The following DI parameters could not be found in the registry: {}"".format( missing ) results = {} results.update(kwargs) if to_resolve: resolved_parameters = await self.resolve(to_resolve, _results) results.update(resolved_parameters) return_value = await method(self, **results) if _results is not None: _results[method.__name__] = return_value return return_value return inner class AsyncBase(metaclass=AsyncMeta): async def resolve(self, names, results=None): print(""\n resolve: "", names) if results is None: results = {} # Come up with an execution plan, just for these nodes ts = graphlib.TopologicalSorter() to_do = set(names) done = set() while to_do: item = to_do.pop() dependencies = self._graph[item] ts.add(item, *dependencies) done.add(item) # Add any not-done dependencies to the queue to_do.update({k for k in dependencies if k not in done}) ts.prepare() plan = [] while ts.is_active(): node_group = ts.get_ready() plan.append(node_group) ts.done(*node_group) print(""plan:"", plan) results = {} for node_group in plan: awaitables = [ self._registry[name]( self, _results=results, **{k: v for k, v in results.items() if k in self._graph[name]}, ) for name in node_group ] print("" results = "", results) print("" awaitables: "", awaitables) awaitable_results = await asyncio.gather(*awaitables) results.update( {p[0].__name__: p[1] for p in zip(awaitables, awaitable_results)} ) print("" End of resolve(), returning"", results) return {key: value for key, value in results.items() if key in names} ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-970660299,https://api.github.com/repos/simonw/datasette/issues/878,970660299,IC_kwDOBm6k_c452xnL,9599,2021-11-16T20:39:43Z,2021-11-16T20:42:27Z,OWNER,"But that does seem to be the plan that `TopographicalSorter` provides: ```python graph = {""go"": {""a""}, ""a"": {""b"", ""c""}, ""b"": {""c"", ""d""}} ts = TopologicalSorter(graph) ts.prepare() while ts.is_active(): nodes = ts.get_ready() print(nodes) ts.done(*nodes) ``` Outputs: ``` ('c', 'd') ('b',) ('a',) ('go',) ``` Also: ```python graph = {""go"": {""d"", ""e"", ""f""}, ""d"": {""b"", ""c""}, ""b"": {""c""}} ts = TopologicalSorter(graph) ts.prepare() while ts.is_active(): nodes = ts.get_ready() print(nodes) ts.done(*nodes) ``` Gives: ``` ('e', 'f', 'c') ('b',) ('d',) ('go',) ``` I'm confident that `TopologicalSorter` is the way to do this. I think I need to rewrite my code to call it once to get that plan, then `await asyncio.gather(*nodes)` in turn to execute it.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-970657874,https://api.github.com/repos/simonw/datasette/issues/878,970657874,IC_kwDOBm6k_c452xBS,9599,2021-11-16T20:36:01Z,2021-11-16T20:36:01Z,OWNER,"My goal here is to calculate the most efficient way to resolve the different nodes, running them in parallel where possible. So for this class: ```python class Complex(AsyncBase): async def d(self): pass async def c(self): pass async def b(self, c, d): pass async def a(self, b, c): pass async def go(self, a): pass ``` A call to `go()` should do this: - `c` and `d` in parallel - `b` - `a` - `go`","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-970655927,https://api.github.com/repos/simonw/datasette/issues/878,970655927,IC_kwDOBm6k_c452wi3,9599,2021-11-16T20:33:11Z,2021-11-16T20:33:11Z,OWNER,"What should be happening here instead is it should resolve the full graph and notice that `c` is depended on by both `b` and `a` - so it should run `c` first, then run the next ones in parallel. So maybe the algorithm I'm inheriting from https://docs.python.org/3/library/graphlib.html isn't the correct algorithm?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-970655304,https://api.github.com/repos/simonw/datasette/issues/878,970655304,IC_kwDOBm6k_c452wZI,9599,2021-11-16T20:32:16Z,2021-11-16T20:32:16Z,OWNER,"This code is really fiddly. I just got to this version: ```python import asyncio from functools import wraps import inspect try: import graphlib except ImportError: from . import vendored_graphlib as graphlib class AsyncMeta(type): def __new__(cls, name, bases, attrs): # Decorate any items that are 'async def' methods _registry = {} new_attrs = {""_registry"": _registry} for key, value in attrs.items(): if inspect.iscoroutinefunction(value) and not value.__name__ == ""resolve"": new_attrs[key] = make_method(value) _registry[key] = new_attrs[key] else: new_attrs[key] = value # Gather graph for later dependency resolution graph = { key: { p for p in inspect.signature(method).parameters.keys() if p != ""self"" and not p.startswith(""_"") } for key, method in _registry.items() } new_attrs[""_graph""] = graph return super().__new__(cls, name, bases, new_attrs) def make_method(method): @wraps(method) async def inner(self, _results=None, **kwargs): print(""inner - _results="", _results) parameters = inspect.signature(method).parameters.keys() # Any parameters not provided by kwargs are resolved from registry to_resolve = [p for p in parameters if p not in kwargs and p != ""self""] missing = [p for p in to_resolve if p not in self._registry] assert ( not missing ), ""The following DI parameters could not be found in the registry: {}"".format( missing ) results = {} results.update(kwargs) if to_resolve: resolved_parameters = await self.resolve(to_resolve, _results) results.update(resolved_parameters) return_value = await method(self, **results) if _results is not None: _results[method.__name__] = return_value return return_value return inner class AsyncBase(metaclass=AsyncMeta): async def resolve(self, names, results=None): print(""\n resolve: "", names) if results is None: results = {} # Resolve them in the correct order ts = graphlib.TopologicalSorter() for name in names: ts.add(name, *self._graph[name]) ts.prepare() async def resolve_nodes(nodes): print("" resolve_nodes"", nodes) print("" (current results = {})"".format(repr(results))) awaitables = [ self._registry[name]( self, _results=results, **{k: v for k, v in results.items() if k in self._graph[name]}, ) for name in nodes if name not in results ] print("" awaitables: "", awaitables) awaitable_results = await asyncio.gather(*awaitables) results.update( {p[0].__name__: p[1] for p in zip(awaitables, awaitable_results)} ) if not ts.is_active(): # Nothing has dependencies - just resolve directly print("" no dependencies, resolve directly"") await resolve_nodes(names) else: # Resolve in topological order while ts.is_active(): nodes = ts.get_ready() print("" ts.get_ready() returned nodes:"", nodes) await resolve_nodes(nodes) for node in nodes: ts.done(node) print("" End of resolve(), returning"", results) return {key: value for key, value in results.items() if key in names} ``` With this test: ```python class Complex(AsyncBase): def __init__(self): self.log = [] async def c(self): print(""LOG: c"") self.log.append(""c"") async def b(self, c): print(""LOG: b"") self.log.append(""b"") async def a(self, b, c): print(""LOG: a"") self.log.append(""a"") async def go(self, a): print(""LOG: go"") self.log.append(""go"") return self.log @pytest.mark.asyncio async def test_complex(): result = await Complex().go() # 'c' should only be called once assert result == [""c"", ""b"", ""a"", ""go""] ``` This test sometimes passes, and sometimes fails! Output for a pass: ``` tests/test_asyncdi.py inner - _results= None resolve: ['a'] ts.get_ready() returned nodes: ('c', 'b') resolve_nodes ('c', 'b') (current results = {}) awaitables: [, ] inner - _results= {} LOG: c inner - _results= {'c': None} resolve: ['c'] ts.get_ready() returned nodes: ('c',) resolve_nodes ('c',) (current results = {'c': None}) awaitables: [] End of resolve(), returning {'c': None} LOG: b ts.get_ready() returned nodes: ('a',) resolve_nodes ('a',) (current results = {'c': None, 'b': None}) awaitables: [] inner - _results= {'c': None, 'b': None} LOG: a End of resolve(), returning {'c': None, 'b': None, 'a': None} LOG: go ``` Output for a fail: ``` tests/test_asyncdi.py inner - _results= None resolve: ['a'] ts.get_ready() returned nodes: ('b', 'c') resolve_nodes ('b', 'c') (current results = {}) awaitables: [, ] inner - _results= {} resolve: ['c'] ts.get_ready() returned nodes: ('c',) resolve_nodes ('c',) (current results = {}) awaitables: [] inner - _results= {} LOG: c inner - _results= {'c': None} LOG: c End of resolve(), returning {'c': None} LOG: b ts.get_ready() returned nodes: ('a',) resolve_nodes ('a',) (current results = {'c': None, 'b': None}) awaitables: [] inner - _results= {'c': None, 'b': None} LOG: a End of resolve(), returning {'c': None, 'b': None, 'a': None} LOG: go F =================================================================================================== FAILURES =================================================================================================== _________________________________________________________________________________________________ test_complex _________________________________________________________________________________________________ @pytest.mark.asyncio async def test_complex(): result = await Complex().go() # 'c' should only be called once > assert result == [""c"", ""b"", ""a"", ""go""] E AssertionError: assert ['c', 'c', 'b', 'a', 'go'] == ['c', 'b', 'a', 'go'] E At index 1 diff: 'c' != 'b' E Left contains one more item: 'go' E Use -v to get the full diff tests/test_asyncdi.py:48: AssertionError ================== short test summary info ================================ FAILED tests/test_asyncdi.py::test_complex - AssertionError: assert ['c', 'c', 'b', 'a', 'go'] == ['c', 'b', 'a', 'go'] ``` I figured out why this is happening. `a` requires `b` and `c` `b` also requires `c` The code decides to run `b` and `c` in parallel. If `c` completes first, then when `b` runs it gets to use the already-calculated result for `c` - so it doesn't need to call `c` again. If `b` gets to that point before `c` does it also needs to call `c`.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/878#issuecomment-970624197,https://api.github.com/repos/simonw/datasette/issues/878,970624197,IC_kwDOBm6k_c452ozF,9599,2021-11-16T19:49:05Z,2021-11-16T19:49:05Z,OWNER,"Here's the latest version of my weird dependency injection async class: ```python import inspect class AsyncMeta(type): def __new__(cls, name, bases, attrs): # Decorate any items that are 'async def' methods _registry = {} new_attrs = {""_registry"": _registry} for key, value in attrs.items(): if inspect.iscoroutinefunction(value) and not value.__name__ == ""resolve"": new_attrs[key] = make_method(value) _registry[key] = new_attrs[key] else: new_attrs[key] = value # Topological sort of _registry by parameter dependencies graph = { key: { p for p in inspect.signature(method).parameters.keys() if p != ""self"" and not p.startswith(""_"") } for key, method in _registry.items() } new_attrs[""_graph""] = graph return super().__new__(cls, name, bases, new_attrs) def make_method(method): @wraps(method) async def inner(self, **kwargs): parameters = inspect.signature(method).parameters.keys() # Any parameters not provided by kwargs are resolved from registry to_resolve = [p for p in parameters if p not in kwargs and p != ""self""] missing = [p for p in to_resolve if p not in self._registry] assert ( not missing ), ""The following DI parameters could not be found in the registry: {}"".format( missing ) results = {} results.update(kwargs) results.update(await self.resolve(to_resolve)) return await method(self, **results) return inner bad = [0] class AsyncBase(metaclass=AsyncMeta): async def resolve(self, names): print("" resolve({})"".format(names)) results = {} # Resolve them in the correct order ts = TopologicalSorter() ts2 = TopologicalSorter() print("" names = "", names) print("" self._graph = "", self._graph) for name in names: if self._graph[name]: ts.add(name, *self._graph[name]) ts2.add(name, *self._graph[name]) print("" static_order ="", tuple(ts2.static_order())) ts.prepare() while ts.is_active(): print("" is_active, i = "", bad[0]) bad[0] += 1 if bad[0] > 20: print("" Infinite loop?"") break nodes = ts.get_ready() print("" Do nodes:"", nodes) awaitables = [self._registry[name](self, **{ k: v for k, v in results.items() if k in self._graph[name] }) for name in nodes] print("" awaitables: "", awaitables) awaitable_results = await asyncio.gather(*awaitables) results.update({ p[0].__name__: p[1] for p in zip(awaitables, awaitable_results) }) print(results) for node in nodes: ts.done(node) return results ``` Example usage: ```python class Foo(AsyncBase): async def graa(self, boff): print(""graa"") return 5 async def boff(self): print(""boff"") return 8 async def other(self, boff, graa): print(""other"") return 5 + boff + graa foo = Foo() await foo.other() ``` Output: ``` resolve(['boff', 'graa']) names = ['boff', 'graa'] self._graph = {'graa': {'boff'}, 'boff': set(), 'other': {'graa', 'boff'}} static_order = ('boff', 'graa') is_active, i = 0 Do nodes: ('boff',) awaitables: [] resolve([]) names = [] self._graph = {'graa': {'boff'}, 'boff': set(), 'other': {'graa', 'boff'}} static_order = () boff {'boff': 8} is_active, i = 1 Do nodes: ('graa',) awaitables: [] resolve([]) names = [] self._graph = {'graa': {'boff'}, 'boff': set(), 'other': {'graa', 'boff'}} static_order = () graa {'boff': 8, 'graa': 5} other 18 ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",648435885, https://github.com/simonw/datasette/issues/782#issuecomment-970554697,https://api.github.com/repos/simonw/datasette/issues/782,970554697,IC_kwDOBm6k_c452X1J,9599,2021-11-16T18:32:03Z,2021-11-16T18:32:03Z,OWNER,"I'm going to take another look at this: - https://github.com/simonw/datasette/issues/878","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",627794879, https://github.com/simonw/datasette/issues/782#issuecomment-970553780,https://api.github.com/repos/simonw/datasette/issues/782,970553780,IC_kwDOBm6k_c452Xm0,9599,2021-11-16T18:30:51Z,2021-11-16T18:30:58Z,OWNER,"OK, I'm ready to start working on this today. I'm going to go with a default representation that looks like this: ```json { ""rows"": [ {""id"": 1, ""name"": ""One""}, {""id"": 2, ""name"": ""Two""} ], ""next_url"": null } ``` Note that there's no `count` - all it provides is the current selection of results and an indication as to how the next can be retrieved (`null` if there are no more results). I'll implement `?_extra=` to provide everything else.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",627794879, https://github.com/simonw/datasette/issues/1509#issuecomment-970544733,https://api.github.com/repos/simonw/datasette/issues/1509,970544733,IC_kwDOBm6k_c452VZd,9599,2021-11-16T18:22:32Z,2021-11-16T18:22:32Z,OWNER,"This is mainly happening here: - https://github.com/simonw/datasette/issues/782","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1054243511, https://github.com/simonw/datasette/issues/1012#issuecomment-970266123,https://api.github.com/repos/simonw/datasette/issues/1012,970266123,IC_kwDOBm6k_c451RYL,45380,2021-11-16T13:18:36Z,2021-11-16T13:18:36Z,CONTRIBUTOR,"Congratulations, looks like it went through! There was a bit of a hold-up on the JupyterLab ones, but it's semi automated: a dependabot pr to warehouse and a CI deploy, with a click in between. ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",718540751, https://github.com/simonw/datasette/issues/1505#issuecomment-970188065,https://api.github.com/repos/simonw/datasette/issues/1505,970188065,IC_kwDOBm6k_c450-Uh,7094907,2021-11-16T11:40:52Z,2021-11-16T11:40:52Z,NONE,A suggestion is to have the option to choose an arbitrary delimiter (and quoting characters ),"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052247023, https://github.com/simonw/datasette/issues/448#issuecomment-969621662,https://api.github.com/repos/simonw/datasette/issues/448,969621662,IC_kwDOBm6k_c45y0Ce,9599,2021-11-16T01:32:04Z,2021-11-16T01:32:04Z,OWNER,"Tests are failing and I think it's because the facets come back in different orders, need a tie-breaker. https://github.com/simonw/datasette/runs/4219325197?check_suite_focus=true","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/1176#issuecomment-969616626,https://api.github.com/repos/simonw/datasette/issues/1176,969616626,IC_kwDOBm6k_c45yyzy,9599,2021-11-16T01:29:13Z,2021-11-16T01:29:13Z,OWNER,"I'm inclined to create a Sphinx reference documentation page for this, as I did for `sqlite-utils` here: https://sqlite-utils.datasette.io/en/stable/reference.html","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",779691739, https://github.com/simonw/datasette/issues/1012#issuecomment-969613166,https://api.github.com/repos/simonw/datasette/issues/1012,969613166,IC_kwDOBm6k_c45yx9u,9599,2021-11-16T01:27:25Z,2021-11-16T01:27:25Z,OWNER,"Requested here: - https://github.com/pypa/trove-classifiers/pull/85","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",718540751, https://github.com/simonw/datasette/issues/1012#issuecomment-969602825,https://api.github.com/repos/simonw/datasette/issues/1012,969602825,IC_kwDOBm6k_c45yvcJ,9599,2021-11-16T01:21:14Z,2021-11-16T01:21:14Z,OWNER,"I'd been wondering how to get new classifiers into Trove - thanks, I'll give this a go.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",718540751, https://github.com/simonw/datasette/issues/1511#issuecomment-969600859,https://api.github.com/repos/simonw/datasette/issues/1511,969600859,IC_kwDOBm6k_c45yu9b,9599,2021-11-16T01:20:13Z,2021-11-16T01:20:13Z,OWNER,"See: - #830","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1054246919, https://github.com/simonw/datasette/issues/448#issuecomment-969582098,https://api.github.com/repos/simonw/datasette/issues/448,969582098,IC_kwDOBm6k_c45yqYS,9599,2021-11-16T01:10:28Z,2021-11-16T01:10:28Z,OWNER,"Also note that this demo data is using a SQL view to create the JSON arrays - the view is defined as such: ```sql CREATE VIEW ads_with_targets as select ads.*, json_group_array(targets.name) as target_names from ads join ad_targets on ad_targets.ad_id = ads.id join targets on ad_targets.target_id = targets.id group by ad_targets.ad_id; ``` So running JSON faceting on top of that view is a pretty big ask!","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969578466,https://api.github.com/repos/simonw/datasette/issues/448,969578466,IC_kwDOBm6k_c45ypfi,9599,2021-11-16T01:08:29Z,2021-11-16T01:08:29Z,OWNER,Actually with the cache warmed up it looks like the facet query is taking 150ms which is good enough.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969572281,https://api.github.com/repos/simonw/datasette/issues/448,969572281,IC_kwDOBm6k_c45yn-5,9599,2021-11-16T01:05:11Z,2021-11-16T01:05:11Z,OWNER,"I tried this and it seems to work correctly: ```python for source_and_config in self.get_configs(): config = source_and_config[""config""] source = source_and_config[""source""] column = config.get(""column"") or config[""simple""] facet_sql = """""" with inner as ({sql}), deduped_array_items as ( select distinct j.value, inner.* from json_each([inner].{col}) j join inner ) select value as value, count(*) as count from deduped_array_items group by value order by count(*) desc limit {limit} """""".format( col=escape_sqlite(column), sql=self.sql, limit=facet_size + 1 ) ``` The queries are _very_ slow though - I had to bump up to 2s time limit even against only a view returning 3,499 rows.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969557008,https://api.github.com/repos/simonw/datasette/issues/448,969557008,IC_kwDOBm6k_c45ykQQ,9599,2021-11-16T00:56:09Z,2021-11-16T00:59:59Z,OWNER,"This looks like it might work: ```sql with inner as ( select * from ads_with_targets where :p0 in ( select value from json_each([ads_with_targets].[target_names]) ) ), deduped_array_items as ( select distinct j.value, inner.* from json_each([inner].[target_names]) j join inner ) select value, count(*) from deduped_array_items group by value order by count(*) desc ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969557972,https://api.github.com/repos/simonw/datasette/issues/448,969557972,IC_kwDOBm6k_c45ykfU,9599,2021-11-16T00:56:58Z,2021-11-16T00:56:58Z,OWNER,It uses a CTE which were introduced in SQLite 3.8 - and AWS Lambda Python 3.9 still provides 3.7 - but I've checked and I can use `pysqlite3-binary` to work around that there so I'm OK relying on CTEs for this.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969449772,https://api.github.com/repos/simonw/datasette/issues/448,969449772,IC_kwDOBm6k_c45yKEs,9599,2021-11-15T23:48:37Z,2021-11-15T23:48:37Z,OWNER,"Given this query: https://json-view-facet-bug-demo-j7hipcg4aq-uc.a.run.app/russian-ads?sql=select%0D%0A++j.value+as+value%2C%0D%0A++count%28*%29+as+count%0D%0Afrom%0D%0A++%28%0D%0A++++select%0D%0A++++++id%2C%0D%0A++++++file%2C%0D%0A++++++clicks%2C%0D%0A++++++impressions%2C%0D%0A++++++text%2C%0D%0A++++++url%2C%0D%0A++++++spend_amount%2C%0D%0A++++++spend_currency%2C%0D%0A++++++created%2C%0D%0A++++++ended%2C%0D%0A++++++target_names%0D%0A++++from%0D%0A++++++ads_with_targets%0D%0A++++where%0D%0A++++++%3Ap0+in+%28%0D%0A++++++++select%0D%0A++++++++++value%0D%0A++++++++from%0D%0A++++++++++json_each%28%5Bads_with_targets%5D.%5Btarget_names%5D%29%0D%0A++++++%29%0D%0A++%29%0D%0A++join+json_each%28target_names%29+j%0D%0Agroup+by%0D%0A++j.value%0D%0Aorder+by%0D%0A++count+desc%2C%0D%0A++value%0D%0Alimit%0D%0A++31&p0=people_who_match%3Ainterests%3AAfrican-American+culture ```sql select j.value as value, count(*) as count from ( select id, file, clicks, impressions, text, url, spend_amount, spend_currency, created, ended, target_names from ads_with_targets where :p0 in ( select value from json_each([ads_with_targets].[target_names]) ) ) join json_each(target_names) j group by j.value order by count desc, value limit 31 ``` How can I return a count of the number of documents containing each tag, but not the number of total tags that match including duplicates?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969446972,https://api.github.com/repos/simonw/datasette/issues/448,969446972,IC_kwDOBm6k_c45yJY8,9599,2021-11-15T23:46:13Z,2021-11-15T23:46:13Z,OWNER,"It looks like the problem here is that some of the tags occur more than once in the documents: So they get counted more than once, hence the 182 count for something that couldn't possibly return more than 172 documents.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969442215,https://api.github.com/repos/simonw/datasette/issues/448,969442215,IC_kwDOBm6k_c45yIOn,9599,2021-11-15T23:42:03Z,2021-11-15T23:42:03Z,OWNER,I think this code is wrong in the `ArrayFacet` class: https://github.com/simonw/datasette/blob/502c02fa6dde6a8bb840af6c4c8cf858aa1db687/datasette/facets.py#L357-L364,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969440918,https://api.github.com/repos/simonw/datasette/issues/448,969440918,IC_kwDOBm6k_c45yH6W,9599,2021-11-15T23:40:17Z,2021-11-15T23:40:35Z,OWNER,"Applied that fix to the `arraycontains` filter but I'm still getting bad results for the faceting: Should never get 182 results on a page that faceting against only 172 items. ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/448#issuecomment-969436930,https://api.github.com/repos/simonw/datasette/issues/448,969436930,IC_kwDOBm6k_c45yG8C,9599,2021-11-15T23:31:58Z,2021-11-15T23:31:58Z,OWNER,"I think this SQL recipe may work instead: ```sql select * from ads_with_targets where 'people_who_match:interests:African-American Civil Rights Movement (1954—68)' in ( select value from json_each(target_names) ) and 'interests:Martin Luther King III' in ( select value from json_each(target_names) ) ``` https://json-view-facet-bug-demo-j7hipcg4aq-uc.a.run.app/russian-ads?sql=select%0D%0A++*%0D%0Afrom%0D%0A++ads_with_targets%0D%0Awhere%0D%0A++%27people_who_match%3Ainterests%3AAfrican-American+Civil+Rights+Movement+%281954%E2%80%9468%29%27+in+%28%0D%0A++++select%0D%0A++++++value%0D%0A++++from%0D%0A++++++json_each%28target_names%29%0D%0A++%29%0D%0A++and+%27interests%3AMartin+Luther+King+III%27+in+%28%0D%0A++++select%0D%0A++++++value%0D%0A++++from%0D%0A++++++json_each%28target_names%29%0D%0A++%29&interests=&African=&Martin=","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",440222719, https://github.com/simonw/datasette/issues/519#issuecomment-969433734,https://api.github.com/repos/simonw/datasette/issues/519,969433734,IC_kwDOBm6k_c45yGKG,9599,2021-11-15T23:26:11Z,2021-11-15T23:26:11Z,OWNER,"I'm happy with this as the goals for 1.0. I'm going to close this issue and create three tracking tickets for the three key themes: - https://github.com/simonw/datasette/issues/1509 - https://github.com/simonw/datasette/issues/1510 - https://github.com/simonw/datasette/issues/1511","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",459590021, https://github.com/simonw/datasette/pull/1508#issuecomment-968904414,https://api.github.com/repos/simonw/datasette/issues/1508,968904414,IC_kwDOBm6k_c45wE7e,22429695,2021-11-15T13:20:49Z,2021-11-15T13:20:49Z,NONE,"# [Codecov](https://codecov.io/gh/simonw/datasette/pull/1508?src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) Report > Merging [#1508](https://codecov.io/gh/simonw/datasette/pull/1508?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (299774b) into [main](https://codecov.io/gh/simonw/datasette/commit/502c02fa6dde6a8bb840af6c4c8cf858aa1db687?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (502c02f) will **not change** coverage. > The diff coverage is `n/a`. [![Impacted file tree graph](https://codecov.io/gh/simonw/datasette/pull/1508/graphs/tree.svg?width=650&height=150&src=pr&token=eSahVY7kw1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)](https://codecov.io/gh/simonw/datasette/pull/1508?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) ```diff @@ Coverage Diff @@ ## main #1508 +/- ## ======================================= Coverage 91.82% 91.82% ======================================= Files 34 34 Lines 4430 4430 ======================================= Hits 4068 4068 Misses 362 362 ``` ------ [Continue to review full report at Codecov](https://codecov.io/gh/simonw/datasette/pull/1508?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://codecov.io/gh/simonw/datasette/pull/1508?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Last update [502c02f...299774b](https://codecov.io/gh/simonw/datasette/pull/1508?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1053655062, https://github.com/simonw/sqlite-utils/issues/329#issuecomment-968470212,https://api.github.com/repos/simonw/sqlite-utils/issues/329,968470212,IC_kwDOCGYnMM45ua7E,9599,2021-11-15T02:49:28Z,2021-11-15T02:49:28Z,OWNER,"I was going to replace all of the `validate_column_names()` bits with something that fixed them instead, but I think I have a better idea: I'm only going to apply the fix for the various '.insert()` methods that create the initial tables. I'll keep the `validate_column_names()` where they are at the moment. Once you've inserted the data and created the tables it will be up to you to use the new, correct column names. This avoids the whole issue of needing to rewrite parameters, and solves the immediate problem which is consuming CSV files with bad column names.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1005891028, https://github.com/simonw/sqlite-utils/issues/329#issuecomment-968458837,https://api.github.com/repos/simonw/sqlite-utils/issues/329,968458837,IC_kwDOCGYnMM45uYJV,9599,2021-11-15T02:21:15Z,2021-11-15T02:21:15Z,OWNER,"I'm not going to implement a fix that rewrites the `pk` and `column_order` and other parameters - at least not yet. The main thing I'm trying to fix here is what happens when you attempt to import a CSV file with `[ ]` in the column names, which should be unaffected by that second challenge.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1005891028, https://github.com/simonw/sqlite-utils/issues/329#issuecomment-968453129,https://api.github.com/repos/simonw/sqlite-utils/issues/329,968453129,IC_kwDOCGYnMM45uWwJ,9599,2021-11-15T02:07:46Z,2021-11-15T02:07:46Z,OWNER,"If I replace `validate_column_names(row.keys())` with `fix_column_names(row)` I need to decide what to do about things like `pk=` and `column_order=`. What should the following do? ```python table.insert({""foo[bar]"": 4}, pk=""foo[bar]"", column_order=[""foo[bar]""]) ``` Should it spot the old column names in the `pk=` and `column_order=` parameters and pretend that `foo_bar_` was passed instead? ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1005891028, https://github.com/simonw/sqlite-utils/issues/329#issuecomment-968451954,https://api.github.com/repos/simonw/sqlite-utils/issues/329,968451954,IC_kwDOCGYnMM45uWdy,9599,2021-11-15T02:05:29Z,2021-11-15T02:05:29Z,OWNER,"> I could even have those replacement characters be properties of the `Database` class, so uses can sub-class and change them. I'm not going to do this, it's unnecessary extra complexity and it means the function that fixes the column names needs to have access to the current `Database` instance.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1005891028, https://github.com/simonw/sqlite-utils/issues/339#issuecomment-968450579,https://api.github.com/repos/simonw/sqlite-utils/issues/339,968450579,IC_kwDOCGYnMM45uWIT,9599,2021-11-15T02:02:34Z,2021-11-15T02:02:34Z,OWNER,Documentation: https://github.com/simonw/sqlite-utils/blob/54a2269e91ce72b059618662ed133a85f3d42e4a/docs/python-api.rst#working-with-lookup-tables,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1053122092, https://github.com/simonw/sqlite-utils/issues/339#issuecomment-968435041,https://api.github.com/repos/simonw/sqlite-utils/issues/339,968435041,IC_kwDOCGYnMM45uSVh,9599,2021-11-15T01:44:42Z,2021-11-15T01:44:42Z,OWNER,"`lookup(column_values, extra_values)` is one option. `column_values` isn't actually a great name for the first parameter any more, since the second parameter also takes column values. The first parameter is now all about the unique lookup values. Maybe this: lookup(lookup_values, extra_values)","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1053122092, https://github.com/simonw/sqlite-utils/issues/339#issuecomment-968434594,https://api.github.com/repos/simonw/sqlite-utils/issues/339,968434594,IC_kwDOCGYnMM45uSOi,9599,2021-11-15T01:43:10Z,2021-11-15T01:43:10Z,OWNER,What should I call this parameter? Django has a similar feature where it calls them `defaults=` (for `get_or_create()`) but I'm not a huge fan of that name.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1053122092, https://github.com/simonw/sqlite-utils/issues/339#issuecomment-968434425,https://api.github.com/repos/simonw/sqlite-utils/issues/339,968434425,IC_kwDOCGYnMM45uSL5,9599,2021-11-15T01:42:36Z,2021-11-15T01:42:36Z,OWNER,"Here's the current signature of `table.lookup()`: https://github.com/simonw/sqlite-utils/blob/9cda5b070f885a7995f0c307bcc4f45f0812994a/sqlite_utils/db.py#L2716-L2729 I'm going to add a second positional argument which can provide a dictionary of column->value to use when creating the original table and populating the initial row. If the row already exists, those columns will be ignored entirely.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1053122092, https://github.com/simonw/sqlite-utils/pull/322#issuecomment-968401459,https://api.github.com/repos/simonw/sqlite-utils/issues/322,968401459,IC_kwDOCGYnMM45uKIz,9599,2021-11-15T00:26:42Z,2021-11-15T00:26:42Z,OWNER,"This relates to the fact that dictionaries, lists and tuples get special treatment and are converted to JSON strings, using this code: https://github.com/simonw/sqlite-utils/blob/e8d958109ee290cfa1b44ef7a39629bb50ab673e/sqlite_utils/db.py#L2937-L2947 So the `COLUMN_TYPE_MAPPING` should include those too - right now it looks like this: https://github.com/simonw/sqlite-utils/blob/e8d958109ee290cfa1b44ef7a39629bb50ab673e/sqlite_utils/db.py#L165-L188","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",979612115, https://github.com/simonw/sqlite-utils/pull/324#issuecomment-968384988,https://api.github.com/repos/simonw/sqlite-utils/issues/324,968384988,IC_kwDOCGYnMM45uGHc,9599,2021-11-14T23:25:16Z,2021-11-14T23:25:16Z,OWNER,"Yes this was absolutely the intention! Thanks, I wonder how often I've made that mistake in other projects?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",988013247, https://github.com/simonw/sqlite-utils/issues/331#issuecomment-968384005,https://api.github.com/repos/simonw/sqlite-utils/issues/331,968384005,IC_kwDOCGYnMM45uF4F,9599,2021-11-14T23:19:29Z,2021-11-14T23:20:32Z,OWNER,"Tested it like this, against a freshly built `.tar.gz` package from my development environment: ``` (w) w % mypy . hello.py:1: error: Skipping analyzing ""sqlite_utils"": found module but no type hints or library stubs hello.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports Found 1 error in 1 file (checked 1 source file) (w) w % pip install ~/Dropbox/Development/sqlite-utils/dist/sqlite-utils-3.17.1.tar.gz Processing /Users/simon/Dropbox/Development/sqlite-utils/dist/sqlite-utils-3.17.1.tar.gz ... Successfully installed sqlite-utils-3.17.1 (w) w % mypy . Success: no issues found in 1 source file ``` I tested against the `.whl` too. My `hello.py` script contained this: ```python import sqlite_utils from typing import cast if __name__ == ""__main__"": db = sqlite_utils.Database(memory=True) table = cast(sqlite_utils.db.Table, db[""foo""]) table.insert({""id"": 5}) print(list(db.query(""select * from foo""))) ``` That `cast()` is necessary because without it you get this error: ``` (w) w % mypy . hello.py:7: error: Item ""View"" of ""Union[Table, View]"" has no attribute ""insert"" ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1026794056, https://github.com/simonw/sqlite-utils/issues/331#issuecomment-968381939,https://api.github.com/repos/simonw/sqlite-utils/issues/331,968381939,IC_kwDOCGYnMM45uFXz,9599,2021-11-14T23:06:20Z,2021-11-14T23:06:20Z,OWNER,Thanks - I didn't know this was needed!,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1026794056, https://github.com/simonw/sqlite-utils/issues/332#issuecomment-968380675,https://api.github.com/repos/simonw/sqlite-utils/issues/332,968380675,IC_kwDOCGYnMM45uFED,9599,2021-11-14T22:57:56Z,2021-11-14T22:57:56Z,OWNER,This is a great idea.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1028056713, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968380387,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968380387,IC_kwDOCGYnMM45uE_j,9599,2021-11-14T22:55:56Z,2021-11-14T22:55:56Z,OWNER,"OK, this should fix it.","{""total_count"": 1, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 1, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968371112,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968371112,IC_kwDOCGYnMM45uCuo,9599,2021-11-14T21:57:43Z,2021-11-14T22:21:31Z,OWNER,"`create_index(..., find_unique_name=)` is good. Default to false. `index_foreign_keys` can set it to true.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968361671,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968361671,IC_kwDOCGYnMM45uAbH,9599,2021-11-14T20:54:53Z,2021-11-14T21:01:14Z,OWNER,"I'm leaning towards `table.create_index(columns, ignore_existing_name=True)` now. Or `resolve_existing_name` - or `skip_existing_name`? ""ignore"" sounds like it might not create the index if the name exists, but we want to still create the index but pick a new name.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968362285,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968362285,IC_kwDOCGYnMM45uAkt,9599,2021-11-14T20:59:44Z,2021-11-14T20:59:44Z,OWNER,I think I'll attempt to create the index and re-try if it fails with that error.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968362214,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968362214,IC_kwDOCGYnMM45uAjm,9599,2021-11-14T20:59:15Z,2021-11-14T20:59:15Z,OWNER,"How to figure out if an index name is already in use? `PRAGMA index_list(t)` requires a table name. This does it: ```sql SELECT name FROM sqlite_master WHERE type = 'index'; ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968361409,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968361409,IC_kwDOCGYnMM45uAXB,9599,2021-11-14T20:52:55Z,2021-11-14T20:52:55Z,OWNER,"Looking at the method signature: https://github.com/simonw/sqlite-utils/blob/92aa5c9c5d26b0889c8c3d97c76a908d5f8af211/sqlite_utils/db.py#L1518-L1524 `if_not_exists` just adds a `IF NOT EXISTS` clause here: https://github.com/simonw/sqlite-utils/blob/92aa5c9c5d26b0889c8c3d97c76a908d5f8af211/sqlite_utils/db.py#L1549-L1561","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968361285,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968361285,IC_kwDOCGYnMM45uAVF,9599,2021-11-14T20:51:57Z,2021-11-14T20:51:57Z,OWNER,"SQLite will happily create multiple identical indexes on a table, using more disk space each time: ```pycon >>> import sqlite_utils >>> db = sqlite_utils.Database(""dupes.db"") >>> db[""t""].insert_all({""id"": i} for i in range(10000)) # dupes.db is 98304 bytes >>> db[""t""].create_index([""id""])
# dupes.db is 204800 bytes >>> db[""t""].indexes [Index(seq=0, name='idx_t_id', unique=0, origin='c', partial=0, columns=['id'])] >>> db[""t""].create_index([""id""], index_name=""t_idx_t_id_2"")
# 311296 bytes >>> db[""t""].create_index([""id""], index_name=""t_idx_t_id_3"")
# 417792 bytes >>> db.vacuum() # Still 417792 bytes ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968360538,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968360538,IC_kwDOCGYnMM45uAJa,9599,2021-11-14T20:46:56Z,2021-11-14T20:46:56Z,OWNER,"I'm tempted to not provide an opt-out option either: if you call `table.create_index(...)` without specifying an index name I think the tool should create the index for you, quietly picking an index name that works. But... it feels wasteful to create an index that exactly duplicates an existing index. Would SQLite even let you do that or would it notice and NOT double the amount of disk space used for that index?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968360387,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968360387,IC_kwDOCGYnMM45uAHD,9599,2021-11-14T20:45:44Z,2021-11-14T20:45:44Z,OWNER,"What would such an option be called? Some options: - `table.create_index([fk.column], force=True)` - not obvious what `force` means here - `table.create_index([fk.column], ignore_existing_name=True)` - not obvious what `ignore` means here - `table.create_index([fk.column], pick_unique_name=True)` - bit verbose If the user doesn't pass in an explicit name it seems like their intent is ""just create me the index, I don't care what name you use"" - so actually perhaps the default behaviour here should be to pick a new unique name if that name is already in use. Then maybe there should be an option to disable that - some options there: - `table.create_index([fk.column], error_on_existing_index_name=True)` - too verbose - `table.create_index([fk.column], force=False)` - not clear what `force` means ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968359868,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968359868,IC_kwDOCGYnMM45t_-8,9599,2021-11-14T20:41:42Z,2021-11-14T20:41:42Z,OWNER,"The ""index idx_generators_eia860_report_date already exists"" error suggests that the problem here is actually one of an index name collision. ```python table.create_index([fk.column]) ``` This will derive a name for the index automatically from the name of the table and the name of the passed in columns: https://github.com/simonw/sqlite-utils/blob/92aa5c9c5d26b0889c8c3d97c76a908d5f8af211/sqlite_utils/db.py#L1536-L1539 So perhaps `.create_index()` should grow an extra option that creates the index even if the name already exists, by finding a new name.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/sqlite-utils/issues/335#issuecomment-968359137,https://api.github.com/repos/simonw/sqlite-utils/issues/335,968359137,IC_kwDOCGYnMM45t_zh,9599,2021-11-14T20:37:00Z,2021-11-14T20:37:00Z,OWNER,This is strange - the code already checks that an index doesn't exist before attempting to create it: https://github.com/simonw/sqlite-utils/blob/92aa5c9c5d26b0889c8c3d97c76a908d5f8af211/sqlite_utils/db.py#L893-L902,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1042569687, https://github.com/simonw/datasette/issues/1507#issuecomment-968210842,https://api.github.com/repos/simonw/datasette/issues/1507,968210842,IC_kwDOBm6k_c45tbma,9599,2021-11-14T05:41:55Z,2021-11-14T05:41:55Z,OWNER,"Here's the build with that fix: https://readthedocs.org/projects/datasette/builds/15268498/ It passed and published the docs: https://docs.datasette.io/en/latest/changelog.html","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052851176, https://github.com/simonw/datasette/issues/1507#issuecomment-968210222,https://api.github.com/repos/simonw/datasette/issues/1507,968210222,IC_kwDOBm6k_c45tbcu,9599,2021-11-14T05:34:14Z,2021-11-14T05:34:14Z,OWNER,"Here's the new build using Python 3: https://readthedocs.org/projects/datasette/builds/15268482/ It's still broken. Here's one of many issue threads about it, this one has a workaround fix: https://github.com/readthedocs/readthedocs.org/issues/8616#issuecomment-952034858 > For future readers, the solution for this problem is to pin `docutils<0.18` in your `requirements.txt` file, and have a `.readthedocs.yaml` file with these contents: > > ``` > version: 2 > > python: > install: > - requirements: docs/requirements.txt > ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052851176, https://github.com/simonw/datasette/issues/1507#issuecomment-968209957,https://api.github.com/repos/simonw/datasette/issues/1507,968209957,IC_kwDOBm6k_c45tbYl,9599,2021-11-14T05:31:07Z,2021-11-14T05:31:07Z,OWNER,"Looks like ReadTheDocs builds started failing for `latest` a few weeks ago: ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052851176, https://github.com/simonw/datasette/issues/1507#issuecomment-968209731,https://api.github.com/repos/simonw/datasette/issues/1507,968209731,IC_kwDOBm6k_c45tbVD,9599,2021-11-14T05:28:41Z,2021-11-14T05:28:41Z,OWNER,"I will try adding a `.readthedocs.yml` file: https://docs.readthedocs.io/en/stable/config-file/v2.html#python-version This might work: ``` version: 2 build: os: ubuntu-20.04 tools: python: ""3.9"" sphinx: configuration: docs/conf.py ``` ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052851176, https://github.com/simonw/datasette/issues/1507#issuecomment-968209616,https://api.github.com/repos/simonw/datasette/issues/1507,968209616,IC_kwDOBm6k_c45tbTQ,9599,2021-11-14T05:27:22Z,2021-11-14T05:27:22Z,OWNER,https://blog.readthedocs.com/default-python-3/ they started defaulting new projects to Python 3 back in Feb 2019 but clearly my project was created before then.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052851176, https://github.com/simonw/datasette/issues/1507#issuecomment-968209560,https://api.github.com/repos/simonw/datasette/issues/1507,968209560,IC_kwDOBm6k_c45tbSY,9599,2021-11-14T05:26:36Z,2021-11-14T05:26:36Z,OWNER,"It looks like my builds there still run on Python 2! ``` git clone --no-single-branch --depth 50 https://github.com/simonw/datasette . git checkout --force de1e031713f47fbd51eb7239db3e7e6025fbf81a git clean -d -f -f python2.7 -mvirtualenv /home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/0.59.2 /home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/0.59.2/bin/python -m pip install --upgrade --no-cache-dir pip setuptools /home/docs/checkouts/readthedocs.org/user_builds/datasette/envs/0.59.2/bin/python -m pip install --upgrade --no-cache-dir mock==1.0.1 pillow==5.4.1 alabaster>=0.7,<0.8,!=0.7.5 commonmark==0.8.1 recommonmark==0.5.0 sphinx<2 sphinx-rtd-theme<0.5 readthedocs-sphinx-ext<2.2 cat docs/conf.py ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052851176, https://github.com/simonw/datasette/issues/1503#issuecomment-968207906,https://api.github.com/repos/simonw/datasette/issues/1503,968207906,IC_kwDOBm6k_c45ta4i,9599,2021-11-14T05:08:26Z,2021-11-14T05:08:26Z,OWNER,"Error: ``` def test_table_html_filter_form_column_options( path, expected_column_options, app_client ): response = app_client.get(path) assert response.status == 200 form = Soup(response.body, ""html.parser"").find(""form"") column_options = [ o.attrs.get(""value"") or o.string for o in form.select(""select[name=_filter_column] option"") ] > assert expected_column_options == column_options E AssertionError: assert ['- column -'...wid', 'value'] == ['- column -', 'value'] E At index 1 diff: 'rowid' != 'value' E Left contains one more item: 'value' E Use -v to get the full diff ``` This is because `rowid` isn't a table column but IS returned by the query used on that page. My solution: start with the query columns, but then add any table columns that were not already returned by the query to the end of the `filter_columns` list.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1050163432, https://github.com/simonw/datasette/issues/1506#issuecomment-968192980,https://api.github.com/repos/simonw/datasette/issues/1506,968192980,IC_kwDOBm6k_c45tXPU,9599,2021-11-14T02:22:40Z,2021-11-14T02:22:40Z,OWNER,"I think the answer is to spot this case and link to `?_item_exact=x` instead of `?_item=x` - it looks like that's already recommended in the documentation here: https://docs.datasette.io/en/stable/json_api.html#column-filter-arguments > **?column__exact=value** or **?_column=value** > Returns rows where the specified column exactly matches the value. So maybe the facet selection rendering logic needs to spot this and link correctly to it?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1052826038, https://github.com/simonw/datasette/issues/1380#issuecomment-967801997,https://api.github.com/repos/simonw/datasette/issues/1380,967801997,IC_kwDOBm6k_c45r3yN,7094907,2021-11-13T08:05:37Z,2021-11-13T08:09:11Z,NONE,"@glasnt yeah I guess that could be an option. I run datasette on large databases > 75gb and the startup time is a bit slow for me even with -i --inspect-file options. Here's a quick sketch for a plugin that will reload db's in a folder that you set for the plugin in metadata.json. If you request /-reload-db new db's will be added. (You probably want to implement some authentication for this =) ) https://gist.github.com/Segerberg/b96a0e0a5389dce2396497323cda7042 ","{""total_count"": 1, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 1, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",924748955, https://github.com/simonw/datasette/issues/1380#issuecomment-967747190,https://api.github.com/repos/simonw/datasette/issues/1380,967747190,IC_kwDOBm6k_c45rqZ2,813732,2021-11-13T00:47:26Z,2021-11-13T00:47:26Z,CONTRIBUTOR,"Would it make sense to run datasette with a fswatch/inotifywait on a folder, then? ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",924748955, https://github.com/simonw/datasette/issues/1380#issuecomment-967181828,https://api.github.com/repos/simonw/datasette/issues/1380,967181828,IC_kwDOBm6k_c45pgYE,7094907,2021-11-12T15:00:18Z,2021-11-12T20:02:29Z,NONE,"There is no such option see https://github.com/simonw/datasette/issues/43. But you could write a plugin using the datasette.add_database(db, name=None) https://docs.datasette.io/en/stable/internals.html#add-database-db-name-none ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",924748955, https://github.com/simonw/sqlite-utils/issues/26#issuecomment-964205475,https://api.github.com/repos/simonw/sqlite-utils/issues/26,964205475,IC_kwDOCGYnMM45eJuj,536941,2021-11-09T14:31:29Z,2021-11-09T14:31:29Z,CONTRIBUTOR,i was just reaching for a tool to do this this morning,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",455486286, https://github.com/simonw/sqlite-utils/issues/336#issuecomment-962411119,https://api.github.com/repos/simonw/sqlite-utils/issues/336,962411119,IC_kwDOCGYnMM45XTpv,9599,2021-11-06T07:21:04Z,2021-11-06T07:21:04Z,OWNER,I've never used `DEFAULT 'CURRENT_TIMESTAMP'` myself so this one should be an interesting bug to explore.,"{""total_count"": 1, ""+1"": 1, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1044267332, https://github.com/simonw/sqlite-utils/pull/337#issuecomment-962259527,https://api.github.com/repos/simonw/sqlite-utils/issues/337,962259527,IC_kwDOCGYnMM45WupH,771193,2021-11-05T22:33:02Z,2021-11-05T22:33:02Z,NONE,"Smokes, it looks like there was a bug in click 8.0.2 (fixed in 8.0.3: https://github.com/pallets/click/issues/2089). Meaning this PR is not needed. Closing.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1046271107, https://github.com/simonw/datasette/issues/1284#issuecomment-851567204,https://api.github.com/repos/simonw/datasette/issues/1284,851567204,MDEyOklzc3VlQ29tbWVudDg1MTU2NzIwNA==,192568,2021-05-31T15:42:10Z,2021-11-04T03:15:01Z,CONTRIBUTOR,"I very much want to make: https://list.SaferDisinfectants.org/disinfectants/listN have this URL: https://list.SaferDisinfectants.org/ I'm using only one table page on the site, with no pagination. I'm not using the home page, though when I tried to move my table to the home page as mentioned above, I failed to figure out how. I am using cloudflare, but I haven't figured out a forwarding or HTML re-write method of doing this, either. Is there any way I can get a prettier list URL? I'm on Vercel. (I have a wordpress site on the main domain on a separate host.)","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",845794436,