mirror of
https://github.com/simtactics/niotso.git
synced 2025-03-23 11:22:20 +00:00
79 lines
2 KiB
C
79 lines
2 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* parsetree.h
|
|
* Routines to access various components and subcomponents of
|
|
* parse trees.
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/parser/parsetree.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PARSETREE_H
|
|
#define PARSETREE_H
|
|
|
|
#include "nodes/parsenodes.h"
|
|
|
|
|
|
/* ----------------
|
|
* range table operations
|
|
* ----------------
|
|
*/
|
|
|
|
/*
|
|
* rt_fetch
|
|
*
|
|
* NB: this will crash and burn if handed an out-of-range RT index
|
|
*/
|
|
#define rt_fetch(rangetable_index, rangetable) \
|
|
((RangeTblEntry *) list_nth(rangetable, (rangetable_index)-1))
|
|
|
|
/*
|
|
* getrelid
|
|
*
|
|
* Given the range index of a relation, return the corresponding
|
|
* relation OID. Note that InvalidOid will be returned if the
|
|
* RTE is for a non-relation-type RTE.
|
|
*/
|
|
#define getrelid(rangeindex,rangetable) \
|
|
(rt_fetch(rangeindex, rangetable)->relid)
|
|
|
|
/*
|
|
* Given an RTE and an attribute number, return the appropriate
|
|
* variable name or alias for that attribute of that RTE.
|
|
*/
|
|
extern char *get_rte_attribute_name(RangeTblEntry *rte, AttrNumber attnum);
|
|
|
|
/*
|
|
* Given an RTE and an attribute number, return the appropriate
|
|
* type and typemod info for that attribute of that RTE.
|
|
*/
|
|
extern void get_rte_attribute_type(RangeTblEntry *rte, AttrNumber attnum,
|
|
Oid *vartype, int32 *vartypmod, Oid *varcollid);
|
|
|
|
/*
|
|
* Check whether an attribute of an RTE has been dropped (note that
|
|
* get_rte_attribute_type will fail on such an attr)
|
|
*/
|
|
extern bool get_rte_attribute_is_dropped(RangeTblEntry *rte,
|
|
AttrNumber attnum);
|
|
|
|
|
|
/* ----------------
|
|
* target list operations
|
|
* ----------------
|
|
*/
|
|
|
|
extern TargetEntry *get_tle_by_resno(List *tlist, AttrNumber resno);
|
|
|
|
/* ----------------
|
|
* FOR UPDATE/SHARE info
|
|
* ----------------
|
|
*/
|
|
|
|
extern RowMarkClause *get_parse_rowmark(Query *qry, Index rtindex);
|
|
|
|
#endif /* PARSETREE_H */
|