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_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/7df74e635e65e880c308d52e11d3d603aa1ee9c6 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(-)
