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Support expressions of the form 'scalar op ANY (array)' and

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'scalar op ALL (array)', where the operator is applied between the
lefthand scalar and each element of the array.  The operator must
yield boolean; the result of the construct is the OR or AND of the
per-element results, respectively.

Original coding by Joe Conway, after an idea of Peter's.  Rewritten
by Tom to keep the implementation strictly separate from subqueries.
This commit is contained in:
Tom Lane
2003-06-29 00:33:44 +00:00
parent df7618020b
commit bee217924d
28 changed files with 875 additions and 157 deletions
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26
src/backend/nodes/outfuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.210 2003/06/25 21:30:29 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.211 2003/06/29 00:33:43 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
@ -668,6 +668,17 @@ _outDistinctExpr(StringInfo str, DistinctExpr *node)
WRITE_NODE_FIELD(args);
}
static void
_outScalarArrayOpExpr(StringInfo str, ScalarArrayOpExpr *node)
{
WRITE_NODE_TYPE("SCALARARRAYOPEXPR");
WRITE_OID_FIELD(opno);
WRITE_OID_FIELD(opfuncid);
WRITE_BOOL_FIELD(useOr);
WRITE_NODE_FIELD(args);
}
static void
_outBoolExpr(StringInfo str, BoolExpr *node)
{
@ -1333,6 +1344,16 @@ _outAExpr(StringInfo str, A_Expr *node)
case AEXPR_NOT:
appendStringInfo(str, " NOT");
break;
case AEXPR_OP_ANY:
appendStringInfo(str, " ");
WRITE_NODE_FIELD(name);
appendStringInfo(str, " ANY ");
break;
case AEXPR_OP_ALL:
appendStringInfo(str, " ");
WRITE_NODE_FIELD(name);
appendStringInfo(str, " ALL ");
break;
case AEXPR_DISTINCT:
appendStringInfo(str, " DISTINCT ");
WRITE_NODE_FIELD(name);
@ -1619,6 +1640,9 @@ _outNode(StringInfo str, void *obj)
case T_DistinctExpr:
_outDistinctExpr(str, obj);
break;
case T_ScalarArrayOpExpr:
_outScalarArrayOpExpr(str, obj);
break;
case T_BoolExpr:
_outBoolExpr(str, obj);
break;