diff options
Diffstat (limited to 'src/backend/nodes/equalfuncs.c')
| -rw-r--r-- | src/backend/nodes/equalfuncs.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/backend/nodes/equalfuncs.c b/src/backend/nodes/equalfuncs.c index bd237cd6f4..8a0957c117 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 - * $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.307 2007/05/22 23:23:56 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.308 2007/06/05 21:31:04 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -360,6 +360,24 @@ _equalRelabelType(RelabelType *a, RelabelType *b) } static bool +_equalCoerceViaIO(CoerceViaIO *a, CoerceViaIO *b) +{ + COMPARE_NODE_FIELD(arg); + COMPARE_SCALAR_FIELD(resulttype); + + /* + * Special-case COERCE_DONTCARE, so that planner can build coercion nodes + * that are equal() to both explicit and implicit coercions. + */ + if (a->coerceformat != b->coerceformat && + a->coerceformat != COERCE_DONTCARE && + b->coerceformat != COERCE_DONTCARE) + return false; + + return true; +} + +static bool _equalArrayCoerceExpr(ArrayCoerceExpr *a, ArrayCoerceExpr *b) { COMPARE_NODE_FIELD(arg); @@ -2052,6 +2070,9 @@ equal(void *a, void *b) case T_RelabelType: retval = _equalRelabelType(a, b); break; + case T_CoerceViaIO: + retval = _equalCoerceViaIO(a, b); + break; case T_ArrayCoerceExpr: retval = _equalArrayCoerceExpr(a, b); break; |