Tom Lane 2f7cd4356b Improved version of patch to protect pg_get_expr() against misuse: ...

look through join alias Vars to avoid breaking join queries, and
move the test to someplace where it will catch more possible ways
of calling a function.  We still ought to throw away the whole thing
in favor of a data-type-based solution, but that's not feasible in
the back branches.

Completion of back-port of my patch of yesterday.

2010-07-30 17:57:18 +00:00

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