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COALESCE() and NULLIF() are now first-class expressions, not macros

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

2003年2月16日 02:30:39 +0000 (02:30 +0000)

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

2003年2月16日 02:30:39 +0000 (02:30 +0000)

commit 51972a9d5d068dd34b24ff4923981ffb90e5cc2d

tree c68fddbb3eaafbd332e84afbafe3c171f6372d4e tree

parent de25638d2fbe9e56ecfc60a7dda8a0c56028317a commit | diff

COALESCE() and NULLIF() are now first-class expressions, not macros
that turn into CASE expressions. They evaluate their arguments at most
once. Patch by Kris Jurka, review and (very light) editorializing by me.

22 files changed:

doc/src/sgml/func.sgml diff | blob | blame | history

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

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

src/backend/nodes/copyfuncs.c diff | blob | blame | history

src/backend/nodes/equalfuncs.c diff | blob | blame | history

src/backend/nodes/outfuncs.c diff | blob | blame | history

src/backend/nodes/readfuncs.c diff | blob | blame | history

src/backend/optimizer/path/costsize.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/gram.y diff | blob | blame | history

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

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

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

src/backend/utils/adt/ruleutils.c diff | blob | blame | history

src/include/catalog/catversion.h diff | blob | blame | history

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

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

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

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

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

src/test/regress/expected/case.out diff | blob | blame | history

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