*
* parsetree.h
* Routines to access various components and subcomponents of
* parse trees.
*
*
* Portions Copyright (c) 1996-2012, 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, bool allowDroppeed = false);
* 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, int* kvtype = NULL);
* 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
