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/sqlite-utils/issues/402#issuecomment-1035057014,https://api.github.com/repos/simonw/sqlite-utils/issues/402,1035057014,IC_kwDOCGYnMM49sbd2,25778,2022-02-10T15:30:28Z,2022-02-10T15:30:40Z,CONTRIBUTOR,"Yeah, the CLI experience is probably where any kind of multi-column, configured setup is going to fall apart. Sticking with GIS examples, one way I might think about this is using the [fiona CLI](https://fiona.readthedocs.io/en/latest/cli.html): ```sh # assuming a database is already created and has SpatiaLite fio cat boundary.shp | sqlite-utils insert boundaries --conversion geometry GeometryGeoJSON - ``` Anyway, very interested to see where you land here.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1125297737, https://github.com/simonw/sqlite-utils/issues/402#issuecomment-1032732242,https://api.github.com/repos/simonw/sqlite-utils/issues/402,1032732242,IC_kwDOCGYnMM49jj5S,25778,2022-02-08T15:26:59Z,2022-02-08T15:26:59Z,CONTRIBUTOR,"What if you did something like this: ```python class Conversion: def __init__(self, *args, **kwargs): ""Put whatever settings you need here"" def python(self, row, column, value): # not sure on args here ""Python step to transform value"" return value def sql(self, row, column, value): ""Return the actual sql that goes in the insert/update step, and maybe params"" # value is the return of self.python() return value, [] ``` This way, you're always passing an instance, which has methods that do the conversion. (Or you're passing a SQL string, as you would now.) The `__init__` could take column names, or SRID, or whatever other setup state you need per row, but the row is getting processed with the `python` and `sql` methods (or whatever you want to call them). This is pretty rough, so do what you will with names and args and such. You'd then use it like this: ```python # subclass might be unneeded here, if methods are present class LngLatConversion(Conversion): def __init__(self, x=""longitude"", y=""latitude""): self.x = x self.y = y def python(self, row, column, value): x = row[self.x] y = row[self.y] return x, y def sql(self, row, column, value): # value is now a tuple, returned above s = ""GeomFromText(POINT(? ?))"" return s, value table.insert_all(rows, conversions={""point"": LngLatConversion(""lng"", ""lat""))} ``` I haven't thought through all the implementation details here, and it'll probably break in ways I haven't foreseen, but wanted to get this idea out of my head. Hope it helps.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1125297737, https://github.com/simonw/sqlite-utils/issues/402#issuecomment-1031791783,https://api.github.com/repos/simonw/sqlite-utils/issues/402,1031791783,IC_kwDOCGYnMM49f-Sn,25778,2022-02-07T18:37:40Z,2022-02-07T18:37:40Z,CONTRIBUTOR,"I've never used it either, but it's interesting, right? Feel like I should try it for something. I'm trying to get my head around how this conversions feature might work, because I really like the idea of it.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1125297737, https://github.com/simonw/sqlite-utils/issues/402#issuecomment-1031779460,https://api.github.com/repos/simonw/sqlite-utils/issues/402,1031779460,IC_kwDOCGYnMM49f7SE,25778,2022-02-07T18:24:56Z,2022-02-07T18:24:56Z,CONTRIBUTOR,"I wonder if there's any overlap with the goals here and the `sqlite3` module's concept of adapters and converters: https://docs.python.org/3/library/sqlite3.html#sqlite-and-python-types I'm not sure that's _exactly_ what we're talking about here, but it might be a parallel with some useful ideas to borrow.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1125297737,