mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-02 22:13:24 +02:00
6cef5d2549
qualified operator names directly, for example CREATE OPERATOR myschema.+ ( ... ). To qualify an operator name in an expression you need to write OPERATOR(myschema.+) (thanks to Peter for suggesting an escape hatch). I also took advantage of having to reformat pg_operator to fix something that'd been bugging me for a while: mergejoinable operators should have explicit links to the associated cross-data-type comparison operators, rather than hardwiring an assumption that they are named < and >.
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* parse_func.h
|
|
*
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* $Id: parse_func.h,v 1.40 2002/04/16 23:08:12 tgl Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PARSER_FUNC_H
|
|
#define PARSER_FUNC_H
|
|
|
|
#include "parser/parse_node.h"
|
|
|
|
/*
|
|
* This structure is used to explore the inheritance hierarchy above
|
|
* nodes in the type tree in order to disambiguate among polymorphic
|
|
* functions.
|
|
*/
|
|
typedef struct _InhPaths
|
|
{
|
|
int nsupers; /* number of superclasses */
|
|
Oid self; /* this class */
|
|
Oid *supervec; /* vector of superclasses */
|
|
} InhPaths;
|
|
|
|
/* Result codes for func_get_detail */
|
|
typedef enum
|
|
{
|
|
FUNCDETAIL_NOTFOUND, /* no suitable interpretation */
|
|
FUNCDETAIL_NORMAL, /* found a matching regular function */
|
|
FUNCDETAIL_AGGREGATE, /* found a matching aggregate function */
|
|
FUNCDETAIL_COERCION /* it's a type coercion request */
|
|
} FuncDetailCode;
|
|
|
|
|
|
extern Node *ParseFuncOrColumn(ParseState *pstate,
|
|
List *funcname, List *fargs,
|
|
bool agg_star, bool agg_distinct, bool is_column);
|
|
|
|
extern FuncDetailCode func_get_detail(List *funcname, List *fargs,
|
|
int nargs, Oid *argtypes,
|
|
Oid *funcid, Oid *rettype,
|
|
bool *retset, Oid **true_typeids);
|
|
|
|
extern bool typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId);
|
|
|
|
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);
|
|
|
|
#endif /* PARSE_FUNC_H */
|