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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2003-06-29 00:33:44 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2003-06-29 00:33:44 +0000 |
| commit | bee217924d51af8cf0411167bfc8a7eb55122577 (patch) | |
| tree | ab6d3f311de5fd6b415e0bdf032205ed503ba95c /src/backend/parser/parse_expr.c | |
| parent | df7618020b3845a51d1ba80cb9abfc6df5dfeaff (diff) | |
| download | postgresql-bee217924d51af8cf0411167bfc8a7eb55122577.tar.gz postgresql-bee217924d51af8cf0411167bfc8a7eb55122577.zip | |
Support expressions of the form 'scalar op ANY (array)' and
'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.
Diffstat (limited to 'src/backend/parser/parse_expr.c')
| -rw-r--r-- | src/backend/parser/parse_expr.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c index 6a90ab9197d..b985b190bac 100644 --- a/src/backend/parser/parse_expr.c +++ b/src/backend/parser/parse_expr.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.153 2003/06/27 17:04:53 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.154 2003/06/29 00:33:43 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -300,6 +300,34 @@ transformExpr(ParseState *pstate, Node *expr) makeList1(rexpr)); } break; + case AEXPR_OP_ANY: + { + Node *lexpr = transformExpr(pstate, + a->lexpr); + Node *rexpr = transformExpr(pstate, + a->rexpr); + + result = (Node *) make_scalar_array_op(pstate, + a->name, + true, + lexpr, + rexpr); + } + break; + case AEXPR_OP_ALL: + { + Node *lexpr = transformExpr(pstate, + a->lexpr); + Node *rexpr = transformExpr(pstate, + a->rexpr); + + result = (Node *) make_scalar_array_op(pstate, + a->name, + false, + lexpr, + rexpr); + } + break; case AEXPR_DISTINCT: { Node *lexpr = transformExpr(pstate, @@ -879,6 +907,7 @@ transformExpr(ParseState *pstate, Node *expr) case T_FuncExpr: case T_OpExpr: case T_DistinctExpr: + case T_ScalarArrayOpExpr: case T_NullIfExpr: case T_BoolExpr: case T_FieldSelect: @@ -1155,6 +1184,9 @@ exprType(Node *expr) case T_DistinctExpr: type = ((DistinctExpr *) expr)->opresulttype; break; + case T_ScalarArrayOpExpr: + type = BOOLOID; + break; case T_BoolExpr: type = BOOLOID; break; |