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Restructure representation of aggregate functions so that they have pg_proc

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entries, per pghackers discussion.  This fixes aggregates to live in
namespaces, and also simplifies/speeds up lookup in parse_func.c.
Also, add a 'proimplicit' flag to pg_proc that controls whether a type
coercion function may be invoked implicitly, or only explicitly.  The
current settings of these flags are more permissive than I would like,
but we will need to debate and refine the behavior; for now, I avoided
breaking regression tests as much as I could.
This commit is contained in:
Tom Lane
2002-04-11 20:00:18 +00:00
parent 3f6299df6c
commit 902a6a0a4b
63 changed files with 2530 additions and 2440 deletions
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8
src/include/parser/parse_func.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_func.h,v 1.38 2002/04/09 20:35:55 tgl Exp $
* $Id: parse_func.h,v 1.39 2002/04/11 20:00:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -42,7 +42,8 @@ typedef struct _CandidateList
typedef enum
{
FUNCDETAIL_NOTFOUND, /* no suitable interpretation */
FUNCDETAIL_NORMAL, /* found a matching function */
FUNCDETAIL_NORMAL, /* found a matching regular function */
FUNCDETAIL_AGGREGATE, /* found a matching aggregate function */
FUNCDETAIL_COERCION /* it's a type coercion request */
} FuncDetailCode;
@ -62,6 +63,9 @@ extern void func_error(const char *caller, List *funcname,
int nargs, const Oid *argtypes,
const char *msg);
extern Oid find_aggregate_func(const char *caller, List *aggname,
Oid basetype);
extern Oid LookupFuncName(List *funcname, int nargs, const Oid *argtypes);
extern Oid LookupFuncNameTypeNames(List *funcname, List *argtypes,
bool opaqueOK, const char *caller);