id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
1383646615,I_kwDOCGYnMM5SeMWX,491,Ability to merge databases and tables,8904453,open,0,,,7,2022-09-23T11:10:55Z,2023-06-14T22:14:24Z,,NONE,,"Hi! Let me firstly say that I am a big fan of your work -- I follow your tweets and blog posts with great interest 😄.

Now onto the matter at hand: I think it would be great if `sqlite-utils` included a `merge` or `combine` command, with the purpose of combining different SQLite databases into a single SQLite database. This way, the newly ""merged"" database would contain all differently named tables contained in the databases to be merged as-is, as well a concatenation of all tables of the same name.

This could look something like this:

```bash
sqlite-utils merge cats.db dogs.db > animals.db
```

I imagine this is rather straightforward if all databases involved in the merge contain differently named tables (i.e. no chance of conflicts), but things get slightly more complicated if two or more of the databases to be merged contain tables with the same name. Not only do you have to ""do something"" with the primary key(s), but these tables could also simply have different schemas (and therefore be incompatible for concatenation to begin with).

Anyhow, I would love your thoughts on this, and, if you are open to it, work together on the design and implementation!",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/491/reactions"", ""total_count"": 2, ""+1"": 2, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1082651698,I_kwDOCGYnMM5Ah_Qy,358,Support for CHECK constraints,11597658,open,0,,,7,2021-12-16T21:19:45Z,2022-09-25T07:15:59Z,,NONE,,"Hi,

I noticed the `transform.table()` method doesn't have an option to add/change or drop a check constraint (see https://sqlite.org/lang_createtable.html -> 3.7 Check Constraints. would be great to have this as an option! 
",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/358/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
564579430,MDU6SXNzdWU1NjQ1Nzk0MzA=,86,Problem with square bracket in CSV column name,8149512,closed,0,,,7,2020-02-13T10:19:57Z,2020-02-27T04:16:08Z,2020-02-27T04:16:07Z,NONE,,"testing some data from european power information (entsoe.eu), the title of the csv contains square brackets.
as I am playing with glitch, sqlite-utils are used for creating the db.

Traceback (most recent call last):

  File ""/app/.local/bin/sqlite-utils"", line 8, in <module>

    sys.exit(cli())

  File ""/app/.local/lib/python3.7/site-packages/click/core.py"", line 764, in __call__

    return self.main(*args, **kwargs)

  File ""/app/.local/lib/python3.7/site-packages/click/core.py"", line 717, in main

    rv = self.invoke(ctx)

  File ""/app/.local/lib/python3.7/site-packages/click/core.py"", line 1137, in invoke

    return _process_result(sub_ctx.command.invoke(sub_ctx))

  File ""/app/.local/lib/python3.7/site-packages/click/core.py"", line 956, in invoke

    return ctx.invoke(self.callback, **ctx.params)

  File ""/app/.local/lib/python3.7/site-packages/click/core.py"", line 555, in invoke

    return callback(*args, **kwargs)

  File ""/app/.local/lib/python3.7/site-packages/sqlite_utils/cli.py"", line 434, in insert

    default=default,

  File ""/app/.local/lib/python3.7/site-packages/sqlite_utils/cli.py"", line 384, in insert_upsert_implementation

    docs, pk=pk, batch_size=batch_size, alter=alter, **extra_kwargs

  File ""/app/.local/lib/python3.7/site-packages/sqlite_utils/db.py"", line 997, in insert_all

    extracts=extracts,

  File ""/app/.local/lib/python3.7/site-packages/sqlite_utils/db.py"", line 618, in create

    extracts=extracts,

  File ""/app/.local/lib/python3.7/site-packages/sqlite_utils/db.py"", line 310, in create_table

    self.conn.execute(sql)

sqlite3.OperationalError: unrecognized token: ""]""

entsoe_2016.csv

renamed to txt for uploading compatibility

[entsoe_2016.txt](https://github.com/simonw/sqlite-utils/files/4197688/entsoe_2016.txt)

code is remixed directly from your https://glitch.com/edit/#!/datasette-csvs repo
",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/86/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed