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/*-------------------------------------------------------------------------
*
* rewriteManip.h
* Querytree manipulation subroutines for query rewriter.
*
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: rewriteManip.h,v 1.29 2001/10/28 06:26:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef REWRITEMANIP_H
#define REWRITEMANIP_H
#include "nodes/parsenodes.h"
extern void OffsetVarNodes(Node *node, int offset, int sublevels_up);
extern void ChangeVarNodes(Node *node, int old_varno, int new_varno,
int sublevels_up);
extern void IncrementVarSublevelsUp(Node *node, int delta_sublevels_up,
int min_sublevels_up);
extern bool rangeTableEntry_used(Node *node, int rt_index,
int sublevels_up);
extern bool attribute_used(Node *node, int rt_index, int attno,
int sublevels_up);
extern Query *getInsertSelectQuery(Query *parsetree, Query ***subquery_ptr);
extern void AddQual(Query *parsetree, Node *qual);
extern void AddHavingQual(Query *parsetree, Node *havingQual);
extern void AddNotQual(Query *parsetree, Node *qual);
extern bool checkExprHasAggs(Node *node);
extern bool checkExprHasSubLink(Node *node);
extern Node *ResolveNew(Node *node, int target_varno, int sublevels_up,
List *targetlist, int event, int update_varno);
#endif /* REWRITEMANIP_H */
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