[6.0.2] Lift GroupByAggregate when correlation predicate matches #27108
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maumar
approved these changes
Jan 7, 2022
Earlier, we didn't match on exact predicate Also fix bug in LikeExpression.Equals Resolves #27102
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ajcvickers
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Looks like there is no such thing as a "Very low" risk fix in query, see #27427 |
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Earlier, we didn't match on exact predicate
Also fix bug in LikeExpression.Equals
Resolves #27102
Description
When projection after group by has an aggregation term which is not aggregate on grouping, incorrect SQL is generated which generates incorrect results or invalid SQL.
Customer impact
Customer queries will either give incorrect result or throw exception with invalid SQL.
How found
Customer reported on 6.0.1
Regression
Yes, From 5.0
Testing
Added test for user scenario which validates non grouping related aggregation.
Risk
Very low. Added quirk to revert to previous behavior.