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Fix WITH attached to a nested set operation (UNION/INTERSECT/EXCEPT).

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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.
This commit is contained in:
Tom Lane
2012-07-31 17:56:21 -04:00
parent b76356ac22
commit f6ce81f55a
10 changed files with 123 additions and 21 deletions
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2
src/backend/nodes/equalfuncs.c
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@@ -976,12 +976,12 @@ _equalSelectStmt(const SelectStmt *a, const SelectStmt *b)
COMPARE_NODE_FIELD(groupClause);
COMPARE_NODE_FIELD(havingClause);
COMPARE_NODE_FIELD(windowClause);
COMPARE_NODE_FIELD(withClause);
COMPARE_NODE_FIELD(valuesLists);
COMPARE_NODE_FIELD(sortClause);
COMPARE_NODE_FIELD(limitOffset);
COMPARE_NODE_FIELD(limitCount);
COMPARE_NODE_FIELD(lockingClause);
COMPARE_NODE_FIELD(withClause);
COMPARE_SCALAR_FIELD(op);
COMPARE_SCALAR_FIELD(all);
COMPARE_NODE_FIELD(larg);