rewriteManip.h

/*-------------------------------------------------------------------------
 *
 * rewriteManip.h
 *
 *
 *
 * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: rewriteManip.h,v 1.22 2000/09/12 21:07:15 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef REWRITEMANIP_H
#define REWRITEMANIP_H

#include "rewrite/rewriteHandler.h"

/* RewriteManip.c */
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 void AddQual(Query *parsetree, Node *qual);
extern void AddHavingQual(Query *parsetree, Node *havingQual);
extern void AddNotQual(Query *parsetree, Node *qual);
extern void AddGroupClause(Query *parsetree, List *group_by, List *tlist);

extern bool checkExprHasAggs(Node *node);
extern bool checkExprHasSubLink(Node *node);

extern void FixNew(RewriteInfo *info, Query *parsetree);

extern void HandleRIRAttributeRule(Query *parsetree, List *rtable,
					   List *targetlist, int rt_index,
					   int attr_num, int *modified, int *badsql);

#endif	 /* REWRITEMANIP_H */