id,node_id,number,title,user,user_label,state,locked,assignee,assignee_label,milestone,milestone_label,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,repo_label,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
705975133,MDExOlB1bGxSZXF1ZXN0NDkwNjA3OTQ5,161,table.transform() method,9599,simonw,closed,0,,,5897911,2.20,13,2020-09-21T23:16:59Z,2020-09-22T07:48:24Z,2020-09-22T04:20:02Z,OWNER,simonw/sqlite-utils/pulls/161,"Refs #114

- [x] Ability to change the primary key
- [x] Support for changing default value for columns
- [x] Support for changing `NOT NULL` status of columns
- [x] Support for copying existing foreign keys and removing them
- <strike>Support for `conversions=` parameter</strike>
- [x] Detailed documentation
- [x] `PRAGMA foreign_keys` stuff",140912432,sqlite-utils,pull,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/161/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",0,
470345929,MDU6SXNzdWU0NzAzNDU5Mjk=,42,"table.extract(...) method and ""sqlite-utils extract"" command",9599,simonw,closed,0,,,5897911,2.20,21,2019-07-19T14:09:36Z,2020-09-22T23:39:31Z,2020-09-22T23:37:49Z,OWNER,,"One of my favourite features of [csvs-to-sqlite](https://github.com/simonw/csvs-to-sqlite) is that it can ""extract"" columns into a separate lookup table - for example:

    csvs-to-sqlite big_csv_file.csv -c country output.db

This will turn the `country` column in the resulting table into a integer foreign key against a new `country` table. You can see an example of what that looks like here: https://san-francisco.datasettes.com/registered-business-locations-3d50679/Business+Corridor was extracted from https://san-francisco.datasettes.com/registered-business-locations-3d50679/Registered_Business_Locations_-_San_Francisco?Business%20Corridor=1

I'd like to have the same capability in `sqlite-utils` - but with the ability to run it against an existing SQLite table rather than just against a CSV.",140912432,sqlite-utils,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/42/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
621989740,MDU6SXNzdWU2MjE5ODk3NDA=,114,table.transform() method for advanced alter table,9599,simonw,closed,0,,,5897911,2.20,26,2020-05-20T18:20:46Z,2020-09-22T07:51:37Z,2020-09-22T04:20:02Z,OWNER,,"SQLite's `ALTER TABLE` can only do the following:

* Rename a table
* Rename a column
* Add a column

Notably, it cannot drop columns - so tricks like ""add a float version of this text column, populate it, then drop the old one and rename"" won't work.

The docs here https://www.sqlite.org/lang_altertable.html#making_other_kinds_of_table_schema_changes describe a way of implementing full alters safely within a transaction, but it's fiddly.

1. Create new table
2. Copy data
3. Drop old table
4. Rename new into old 

It would be great if `sqlite-utils` provided an abstraction to help make these kinds of changes safely.",140912432,sqlite-utils,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/114/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
706757891,MDU6SXNzdWU3MDY3NTc4OTE=,169,"Progress bar for ""sqlite-utils extract""",9599,simonw,closed,0,,,5897911,2.20,0,2020-09-22T23:40:21Z,2020-09-24T20:34:50Z,2020-09-23T00:02:40Z,OWNER,,"> Since these operations could take a long time against large tables, it would be neat if there was a progress bar option for the CLI command.
>
> The operations are full table scans so calculating progress shouldn't be too difficult.
_Originally posted by @simonw in https://github.com/simonw/sqlite-utils/issues/42#issuecomment-513246831_",140912432,sqlite-utils,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/169/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
706768798,MDU6SXNzdWU3MDY3Njg3OTg=,170,Release notes for 2.20,9599,simonw,closed,0,,,5897911,2.20,1,2020-09-23T00:13:22Z,2020-09-23T00:31:25Z,2020-09-23T00:31:25Z,OWNER,,https://github.com/simonw/sqlite-utils/compare/2.19...b8e004,140912432,sqlite-utils,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/170/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
706017416,MDU6SXNzdWU3MDYwMTc0MTY=,164,sqlite-utils transform sub-command,9599,simonw,closed,0,,,5897911,2.20,4,2020-09-22T01:32:20Z,2020-09-24T20:34:50Z,2020-09-22T07:48:05Z,OWNER,,The `.transform()` method in #114 warrants an equivalent CLI tool.,140912432,sqlite-utils,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/164/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
706091046,MDU6SXNzdWU3MDYwOTEwNDY=,165,Make .transform() a keyword arguments only function,9599,simonw,closed,0,,,5897911,2.20,0,2020-09-22T05:37:29Z,2020-09-24T20:35:47Z,2020-09-22T06:39:12Z,OWNER,,And rename the first argument from `columns=` to `types=`,140912432,sqlite-utils,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/165/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
706098005,MDU6SXNzdWU3MDYwOTgwMDU=,167,Review the foreign key pragma stuff,9599,simonw,closed,0,,,5897911,2.20,1,2020-09-22T05:55:20Z,2020-09-23T00:13:02Z,2020-09-23T00:13:02Z,OWNER,,"> It is not possible to enable or disable foreign key constraints in the middle of a multi-statement transaction (when SQLite is not in autocommit mode). Attempting to do so does not return an error; it simply has no effect.

https://sqlite.org/foreignkeys.html",140912432,sqlite-utils,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/167/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed