Fix WITH attached to a nested set operation (UNION/INTERSECT/EXCEPT).
Parse analysis neglected to cover the case of a WITH clause attached to an
intermediate-level set operation; it only handled WITH at the top level
or WITH attached to a leaf-level SELECT. Per report from Adam Mackler.
In HEAD, I rearranged the order of SelectStmt's fields to put withClause
with the other fields that can appear on non-leaf SelectStmts. In back
branches, leave it alone to avoid a possible ABI break for third-party
code.
Back-patch to 8.4 where WITH support was added.
Branch
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REL9_0_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/ae47eb112f2332a8acff0cb33025a471d8d01222
Modified Files
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src/backend/parser/analyze.c | 27 ++++++++++--------
src/backend/parser/parse_cte.c | 15 ++++++++++-
src/test/regress/expected/with.out | 51 ++++++++++++++++++++++++++++++++++++
src/test/regress/sql/with.sql | 35 ++++++++++++++++++++++++
4 files changed, 115 insertions(+), 13 deletions(-)