diff options
Diffstat (limited to 'src/backend/nodes/equalfuncs.c')
| -rw-r--r-- | src/backend/nodes/equalfuncs.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/src/backend/nodes/equalfuncs.c b/src/backend/nodes/equalfuncs.c index c0bd77756a4..378d8e44031 100644 --- a/src/backend/nodes/equalfuncs.c +++ b/src/backend/nodes/equalfuncs.c @@ -18,7 +18,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.186 2003/02/10 04:44:45 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.187 2003/02/16 02:30:37 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -379,6 +379,37 @@ _equalCaseWhen(CaseWhen *a, CaseWhen *b) } static bool +_equalCoalesceExpr(CoalesceExpr *a, CoalesceExpr *b) +{ + COMPARE_SCALAR_FIELD(coalescetype); + COMPARE_NODE_FIELD(args); + + return true; +} + +static bool +_equalNullIfExpr(NullIfExpr *a, NullIfExpr *b) +{ + COMPARE_SCALAR_FIELD(opno); + /* + * Special-case opfuncid: it is allowable for it to differ if one + * node contains zero and the other doesn't. This just means that the + * one node isn't as far along in the parse/plan pipeline and hasn't + * had the opfuncid cache filled yet. + */ + if (a->opfuncid != b->opfuncid && + a->opfuncid != 0 && + b->opfuncid != 0) + return false; + + COMPARE_SCALAR_FIELD(opresulttype); + COMPARE_SCALAR_FIELD(opretset); + COMPARE_NODE_FIELD(args); + + return true; +} + +static bool _equalNullTest(NullTest *a, NullTest *b) { COMPARE_NODE_FIELD(arg); @@ -1613,6 +1644,12 @@ equal(void *a, void *b) case T_CaseWhen: retval = _equalCaseWhen(a, b); break; + case T_CoalesceExpr: + retval = _equalCoalesceExpr(a, b); + break; + case T_NullIfExpr: + retval = _equalNullIfExpr(a, b); + break; case T_NullTest: retval = _equalNullTest(a, b); break; |