Calculate agglevelsup correctly when Aggref contains a CTE. If an aggregate function call contains a sub-select that has an RTE referencing a CTE outside the aggregate, we must treat that reference like a Var referencing the CTE's query level for purposes of determining the aggregate's level. Otherwise we might reach the nonsensical conclusion that the aggregate should be evaluated at some query level higher than the CTE, ending in a planner error or a broken plan tree that causes executor failures.
Bug: #19055 Reported-by: BugForge <[email protected]> Author: Tom Lane <[email protected]> Discussion: https://postgr.es/m/[email protected] Backpatch-through: 13 Branch ------ REL_15_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/afd18f27615b0e452373acbc8de2e5282dfeb31b Modified Files -------------- src/backend/parser/parse_agg.c | 28 +++++++++++++++++++++++++++- src/test/regress/expected/with.out | 34 ++++++++++++++++++++++++++++++++++ src/test/regress/sql/with.sql | 14 ++++++++++++++ 3 files changed, 75 insertions(+), 1 deletion(-)
