feat(hogql): really lazy tables #14927
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📸 UI snapshots have been updated1 snapshot changes in total. 0 added, 1 modified, 0 deleted:
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📸 UI snapshots have been updated1 snapshot changes in total. 0 added, 1 modified, 0 deleted:
Triggered by this commit. |
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Problem
We had support for "lazy tables", but only as parts of a join.
Changes
Makes it possible to select from virtual tables constructed for you via subqueries. Those subqueries carry over all fields accessed from them, and manipulate them as needed.
E.g.
select email from lazy_persons-->select email from (select argMax(mat_email, version) as email from persons)This makes it easy to select from persons without worrying about the underlining deduping logic.
How did you test this code?
Tested with queries in the interface and wrote a bunch of tests.