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}",, 743384829,MDExOlB1bGxSZXF1ZXN0NTIxMjg3OTk0,203,changes to allow for compound foreign keys,1049910,open,0,,,7,2020-11-16T00:30:10Z,2023-01-25T18:47:18Z,,FIRST_TIME_CONTRIBUTOR,simonw/sqlite-utils/pulls/203,"Add support for compound foreign keys, as per issue #117 Not sure if this is the right approach. In particular I'm unsure about: - the new `ForeignKey` class, which replaces the namedtuple in order to ensure that `column` and `other_column` are forced into tuples. The class does the job, but doesn't feel very elegant. - I haven't rewritten `guess_foreign_table` to take account of multiple columns, so it just checks for the first column in the foreign key definition. This isn't ideal. - I haven't added any ability to the CLI to add compound foreign keys, it's only in the python API at the moment. The PR also contains a minor related change that columns and tables are always quoted in foreign key definitions.",140912432,pull,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/203/reactions"", ""total_count"": 1, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 1, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",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}",, 722816436,MDU6SXNzdWU3MjI4MTY0MzY=,186,.extract() shouldn't extract null values,9599,open,0,,,7,2020-10-16T02:41:08Z,2021-08-12T12:32:14Z,,OWNER,,"This almost works, but it creates a rogue `type` record with a value of None. ``` In [1]: import sqlite_utils In [2]: db = sqlite_utils.Database(memory=True) In [5]: db[""creatures""].insert_all([ {""id"": 1, ""name"": ""Simon"", ""type"": None}, {""id"": 2, ""name"": ""Natalie"", ""type"": None}, {""id"": 3, ""name"": ""Cleo"", ""type"": ""dog""}], pk=""id"") Out[5]: