issues: 470345929

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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
470345929 MDU6SXNzdWU0NzAzNDU5Mjk= 42 table.extract(...) method and "sqlite-utils extract" command 9599 closed 0   5897911 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 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.

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