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Code review for IS DISTINCT FROM patch. Fix incorrect constant-folding

author Tom Lane <tgl@sss.pgh.pa.us>

2002年11月30日 21:25:08 +0000 (21:25 +0000)

committer Tom Lane <tgl@sss.pgh.pa.us>

2002年11月30日 21:25:08 +0000 (21:25 +0000)

commit 2b7ec402c41f6112087b1bf2171872d58151cd45

tree 2607cf98815943baef0a20e0b38e445ac6975cfe tree

parent 36c356e799a0406c860988e3b8d744d89a3dc31c commit | diff

Code review for IS DISTINCT FROM patch. Fix incorrect constant-folding
logic, dissuade planner from thinking that 'x IS DISTINCT FROM 42' may
be optimized into 'x = 42' (!!), cause dependency on = operator to be
recorded correctly, minor other improvements.

src/backend/catalog/dependency.c diff | blob | blame | history

src/backend/executor/execQual.c diff | blob | blame | history

src/backend/optimizer/plan/setrefs.c diff | blob | blame | history

src/backend/optimizer/util/clauses.c diff | blob | blame | history

src/backend/parser/parse_expr.c diff | blob | blame | history

src/include/nodes/primnodes.h diff | blob | blame | history

src/pl/plpgsql/src/pl_exec.c diff | blob | blame | history

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