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
472115381,MDU6SXNzdWU0NzIxMTUzODE=,49,extracts= should support multiple-column extracts,9599,open,0,,,10,2019-07-24T07:06:41Z,2020-10-16T19:18:19Z,,OWNER,,"Lookup tables can be constructed on compound columns, but the `extracts=` option doesn't currently support that.

Right now extracts can be defined in two ways:
```python
# Extract these columns into tables with the same name:
dogs = db.table(""dogs"", extracts=[""breed"", ""most_recent_trophy""])

# Same as above but with custom table names:
dogs = db.table(""dogs"", extracts={""breed"": ""Breeds"", ""most_recent_trophy"": ""Trophies""})
```
Need some kind of syntax for much more complicated extractions, like when two columns (say ""source"" and ""source_version"") are extracted into a single table.",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/49/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,