Oracle requires the EXISTS expression to be wrapped in a CASE WHEN in
the GROUP BY clause.
Regression in efa1908f66.
Backport of 3a941230c8 from master
691def10a0 made all Subquery() instances
equal to each other which broke aggregation subquery pushdown which
relied on object equality to determine which alias it should select.
Subquery.__eq__() will be fixed in an another commit but
Query.rewrite_cols() should haved used object identity from the start.
Refs #30727, #30188.
Thanks Makina Corpus for the report.
Backport of adfbf653dc from master
Subquery annotation references must be resolved if they are excluded
from the GROUP BY clause by a following .values() call.
Regression in fb3f034f1c.
Thanks Makina Corpus for the report.
Backport of 42c08ee465 from master
Mariusz Felisiak
Simon Charette