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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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18
src/include/nodes/execnodes.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: execnodes.h,v 1.99 2003/06/22 22:04:55 tgl Exp $
* $Id: execnodes.h,v 1.100 2003/06/29 00:33:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -488,6 +488,22 @@ typedef struct FuncExprState
FunctionCallInfoData setArgs;
} FuncExprState;
/* ----------------
* ScalarArrayOpExprState node
*
* This is a FuncExprState plus some additional data.
* ----------------
*/
typedef struct ScalarArrayOpExprState
{
FuncExprState fxprstate;
/* Cached info about array element type */
Oid element_type;
int16 typlen;
bool typbyval;
char typalign;
} ScalarArrayOpExprState;
/* ----------------
* BoolExprState node
* ----------------