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[ruslandoga]

No description provided.

[Zarathustra2]

Should we maybe add an example on how to reproduce this same postgresql behaviour in clickhouse?

Maybe with an additional subquery we could get:

subq = union_all(hits, ^visits)
same_behaviour_as_postgresql = from(f in subquery(subq), limit: 2, order_by: [desc: :count]) 

select f."counter_id" from (
  SELECT h0."counter_id"
  FROM "hits" AS h0
  UNION ALL (
    SELECT v0."counter_id"
    FROM "visits" AS v0
    ORDER BY v0."count" DESC
    LIMIT 2
  )
) f
ORDER BY f."count" DESC
LIMIT 2

( I did not test my code but believe that should do it 🙈 )

[ruslandoga]

Yeah, I'm thinking about raising if there are both query.combinations and query.offset or query.limit set. And the error messages would point at using subquery

[ruslandoga]

#38

[Zarathustra2]

Very nice! :) , I think this will help the end user