issues: 320592643

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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
320592643 MDU6SXNzdWUzMjA1OTI2NDM= 251 Explore "distinct values for column" in inspect() 9599 closed 0     4 2018-05-06T13:27:24Z 2018-05-14T22:47:55Z 2018-05-14T22:47:55Z OWNER  

A lot of datasets have columns which have a small number of possible values in them - this one for example: https://fivethirtyeight.datasettes.com/fivethirtyeight-2628db9?sql=select+distinct+category+from+%5Binconvenient-sequel%2Fratings%5D%3B

Detecting these could be interesting as part of .inspect(), since it would allow for various UI enhancements like autocomplete / select box filters for those columns.

The problem is detecting them efficiently. .inspect() shouldn't spend 5 minutes churning through columns on giant tables trying to determine if they have a small collection of unique values.

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