Horton

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

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

View on postgr.es
Commit: 51972a9d5d068dd34b24ff4923981ffb90e5cc2d
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2003-02-16T02:30:39Z
Releases: 7.4.1 
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.

Files

PathChange+/−
doc/src/sgml/func.sgml modified +1 −12
src/backend/catalog/dependency.c modified +9 −1
src/backend/executor/execQual.c modified +135 −5
src/backend/nodes/copyfuncs.c modified +39 −2
src/backend/nodes/equalfuncs.c modified +38 −1
src/backend/nodes/outfuncs.c modified +32 −1
src/backend/nodes/readfuncs.c modified +46 −1
src/backend/optimizer/path/costsize.c modified +3 −2
src/backend/optimizer/plan/setrefs.c modified +5 −1
src/backend/optimizer/util/clauses.c modified +86 −11
src/backend/parser/gram.y modified +8 −21
src/backend/parser/parse_clause.c modified +5 −12
src/backend/parser/parse_expr.c modified +94 −1
src/backend/parser/parse_target.c modified +13 −1
src/backend/utils/adt/ruleutils.c modified +41 −1
src/include/catalog/catversion.h modified +2 −2
src/include/nodes/execnodes.h modified +14 −3
src/include/nodes/nodes.h modified +4 −1
src/include/nodes/parsenodes.h modified +2 −1
src/include/nodes/primnodes.h modified +19 −1
src/pl/plpgsql/src/pl_exec.c modified +23 −1
src/test/regress/expected/case.out modified +26 −26