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Fix problems with subselects used in GROUP BY expressions, per gripe
from Philip Warner. Side effect of change is that GROUP BY expressions will not be re-evaluated at multiple plan levels anymore, whereas this sometimes happened with old code.
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- src/backend/optimizer/plan/planner.c 20 additions, 20 deletionssrc/backend/optimizer/plan/planner.c
- src/backend/optimizer/plan/setrefs.c 78 additions, 59 deletionssrc/backend/optimizer/plan/setrefs.c
- src/backend/optimizer/util/clauses.c 67 additions, 22 deletionssrc/backend/optimizer/util/clauses.c
- src/include/optimizer/clauses.h 2 additions, 2 deletionssrc/include/optimizer/clauses.h
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