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/488#issuecomment-1246971764,https://api.github.com/repos/simonw/sqlite-utils/issues/488,1246971764,IC_kwDOCGYnMM5KU0d0,9599,2022-09-14T15:52:14Z,2022-09-14T15:52:14Z,OWNER,"Frustratingly I think this counts as a backwards-incompatible change.

Could have it be opt-in with a new option / method parameter, and then change it to the default if I release a `sqlite-utils 4`.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1373224657,
https://github.com/simonw/sqlite-utils/issues/488#issuecomment-1254029808,https://api.github.com/repos/simonw/sqlite-utils/issues/488,1254029808,IC_kwDOCGYnMM5Kvvnw,9599,2022-09-21T17:45:20Z,2022-09-21T17:45:41Z,OWNER,"No, I'm going to say that this is a bug - it's WEIRD having a `integer` or `float` column containing an empty string. I'm OK changing that - I very much doubt anyone is relying on this functionality.

So no need for a new option here - just fixing the bug is sensible.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1373224657,
https://github.com/simonw/sqlite-utils/issues/488#issuecomment-1254032378,https://api.github.com/repos/simonw/sqlite-utils/issues/488,1254032378,IC_kwDOCGYnMM5KvwP6,9599,2022-09-21T17:47:54Z,2022-09-21T17:47:54Z,OWNER,"New tests should go in: https://github.com/simonw/sqlite-utils/blob/main/tests/test_transform.py

I think the implementation fix needs to go near here: https://github.com/simonw/sqlite-utils/blob/0b315d3fa83c1584eaeec32f24912898621e437a/sqlite_utils/db.py#L1770-L1775

The trick is going to be teaching that generated SQL to know which columns are `integer` or `float` and to convert `""""` to `null` as part of that operation. ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1373224657,
https://github.com/simonw/sqlite-utils/issues/488#issuecomment-1254033981,https://api.github.com/repos/simonw/sqlite-utils/issues/488,1254033981,IC_kwDOCGYnMM5Kvwo9,9599,2022-09-21T17:49:32Z,2022-09-21T17:50:10Z,OWNER,"It looks like SQLite has a `SELECT NULLIF(value, '')` function which returns `null` if that value is equal to `''`.

We need to only apply that function to columns that we know to be of type integer or float though - text columns containing empty strings should not be rewritten to null.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1373224657,
https://github.com/simonw/sqlite-utils/issues/488#issuecomment-1364141224,https://api.github.com/repos/simonw/sqlite-utils/issues/488,1364141224,IC_kwDOCGYnMM5RTySo,1176293,2022-12-23T17:38:55Z,2022-12-23T17:38:55Z,NONE,"> text columns containing empty strings should not be rewritten to null.

I would actually appreciate an option to do just that for text columns as well.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1373224657,