Moved this work to a PR: - #1931

This adds it to the API explorer:

diff diff --git a/datasette/views/special.py b/datasette/views/special.py index 1f84b094..1b4a9d3c 100644 --- a/datasette/views/special.py +++ b/datasette/views/special.py @@ -316,21 +316,37 @@ class ApiExplorerView(BaseView): request.actor, "insert-row", (name, table) ): pks = await db.primary_keys(table) - table_links.append( - { - "path": self.ds.urls.table(name, table) + "/-/insert", - "method": "POST", - "label": "Insert rows into {}".format(table), - "json": { - "rows": [ - { - column: None - for column in await db.table_columns(table) - if column not in pks - } - ] + table_links.extend( + [ + { + "path": self.ds.urls.table(name, table) + "/-/insert", + "method": "POST", + "label": "Insert rows into {}".format(table), + "json": { + "rows": [ + { + column: None + for column in await db.table_columns(table) + if column not in pks + } + ] + }, }, - } + { + "path": self.ds.urls.table(name, table) + "/-/upsert", + "method": "POST", + "label": "Upsert rows into {}".format(table), + "json": { + "rows": [ + { + column: None + for column in await db.table_columns(table) + if column not in pks + } + ] + }, + }, + ] ) if await self.ds.permission_allowed( request.actor, "drop-table", (name, table) Except it doesn't quite, because the example JSON this generates is invalid as it does not include the primary key column.

(Made me notice that the way example columns are created for /-/insert will fail for tables that don't have an auto-incrementing primary key)

Tests are going to need to cover both rowid-only and compound primary key tables, including all of the error states.

Initial prototype: ```diff diff --git a/datasette/app.py b/datasette/app.py index 125b4969..282c0984 100644 --- a/datasette/app.py +++ b/datasette/app.py @@ -40,7 +40,7 @@ from .views.special import ( PermissionsDebugView, MessagesDebugView, ) -from .views.table import TableView, TableInsertView, TableDropView +from .views.table import TableView, TableInsertView, TableUpsertView, TableDropView from .views.row import RowView, RowDeleteView, RowUpdateView from .renderer import json_renderer from .url_builder import Urls @@ -1292,6 +1292,10 @@ class Datasette: TableInsertView.as_view(self), r"/(?P<database>[^\/.]+)/(?P<table>[^\/.]+)/-/insert$", ) + add_route( + TableUpsertView.as_view(self), + r"/(?P<database>[^\/.]+)/(?P<table>[^\/.]+)/-/upsert$", + ) add_route( TableDropView.as_view(self), r"/(?P<database>[^\/.]+)/(?P<table>[^\/.]+)/-/drop$", diff --git a/datasette/views/table.py b/datasette/views/table.py index 7ba78c11..ae0d6366 100644 --- a/datasette/views/table.py +++ b/datasette/views/table.py @@ -1074,9 +1074,15 @@ class TableInsertView(BaseView): def init(self, datasette): self.ds = datasette

• async def _validate_data(self, request, db, table_name):

• async def _validate_data(self, request, db, table_name, pks, upsert): errors = []

• pks_list = []

• if isinstance(pks, str):
• pks_list = [pks]
• else:
• pks_list = list(pks) + def _errors(errors): return None, errors, {}

@@ -1135,6 +1141,15 @@ class TableInsertView(BaseView): # Validate columns of each row columns = set(await db.table_columns(table_name)) for i, row in enumerate(rows): + if upsert: + # It MUST have the primary key + missing_pks = [pk for pk in pks_list if pk not in row] + if missing_pks: + errors.append( + 'Row {} is missing primary key column(s): "{}"'.format( + i, '", "'.join(missing_pks) + ) + ) invalid_columns = set(row.keys()) - columns if invalid_columns: errors.append( @@ -1146,7 +1161,7 @@ class TableInsertView(BaseView): return _errors(errors) return rows, errors, extras

• async def post(self, request):
• async def post(self, request, upsert=False): try: resolved = await self.ds.resolve_table(request) except NotFound as e: @@ -1164,7 +1179,12 @@ class TableInsertView(BaseView): request.actor, "insert-row", resource=(database_name, table_name) ): return _error(["Permission denied"], 403)
• rows, errors, extras = await self._validate_data(request, db, table_name) +
• pks = await db.primary_keys(table_name) +
• rows, errors, extras = await self._validate_data(
• request, db, table_name, pks, upsert
• ) if errors: return _error(errors, 400)

@@ -1172,15 +1192,19 @@ class TableInsertView(BaseView): replace = extras.get("replace")

     should_return = bool(extras.get("return", False))

• Insert rows

• def insert_rows(conn): +
• def insert_or_upsert_rows(conn): table = sqlite_utils.Database(conn)[table_name]
• kwargs = {}
• if upsert:
• kwargs["pk"] = pks[0] if len(pks) == 1 else pks
• else:
• kwargs = {"ignore": ignore, "replace": replace} if should_return: rowids = []
• method = table.upsert if upsert else table.insert for row in rows:
• rowids.append(
• table.insert(row, ignore=ignore, replace=replace).last_rowid
• )
• rowids.append(method(row, **kwargs).last_rowid) return list( table.rows_where( "rowid in ({})".format(",".join("?" for _ in rowids)), @@ -1188,10 +1212,11 @@ class TableInsertView(BaseView): ) ) else:
• table.insert_all(rows, ignore=ignore, replace=replace)
• method_all = table.upsert_all if upsert else table.insert_all
• method_all(rows, **kwargs)

   try:
  

  • rows = await db.execute_write_fn(insert_rows)
  • rows = await db.execute_write_fn(insert_or_upsert_rows) except Exception as e: return _error([str(e)]) result = {"ok": True} @@ -1200,6 +1225,13 @@ class TableInsertView(BaseView): return Response.json(result, status=201)

+class TableUpsertView(TableInsertView): + name = "table-upsert" + + async def post(self, request): + return await super().post(request, upsert=True) + + class TableDropView(BaseView): name = "table-drop" `` Manual testing reveals that this mostly works... but it's not doing the right thing for"return": true` - it always returns an empty list.

And on Discord today: https://discord.com/channels/823971286308356157/823971286941302908/1048426072066236536

Also requested here: https://news.ycombinator.com/item?id=33839894

Hi Simon. I have just started experimenting with datasette in earnest, looking at it's suitability for air quality open data. A bulk upsert \ upsert_all would be very useful for me in enabling real time data to be pushed from a sql server database with FME server to a datasette db.

An hourly process queries the last 2 hours of data and pushes that to my database, inserting new data and updating existing combinations of pk siteid and date_time. This is already implemented on our current open data portal. Excited to see your progress with this! Thank you for this amazing software.

Note that "update" is partially covered by the replace option to /-/insert, added here: - https://github.com/simonw/datasette/issues/1873#issuecomment-1298885451