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postgres/src/backend/optimizer/prep
Tom Lane 3389a110d4 Get rid of long-since-vestigial Iter node type, in favor of adding a
returns-set boolean field in Func and Oper nodes.  This allows cleaner,
more reliable tests for expressions returning sets in the planner and
parser.  For example, a WHERE clause returning a set is now detected
and complained of in the parser, not only at runtime.
2002-05-12 23:43:04 +00:00
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