postgresql/src/include/rewrite/rewriteManip.h

/*-------------------------------------------------------------------------
 *
 * rewriteManip.h--
 *
 *
 *
 * Copyright (c) 1994, Regents of the University of California
 *
 * $Id: rewriteManip.h,v 1.8 1998/07/19 05:49:26 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef REWRITEMANIP_H
#define REWRITEMANIP_H

#include "nodes/nodes.h"
#include "nodes/parsenodes.h"
#include "rewrite/rewriteHandler.h"

/* RewriteManip.c */
void		OffsetVarNodes(Node *node, int offset);
void
ChangeVarNodes(Node *node, int old_varno, int new_varno,
			   int sublevels_up);
void		AddQual(Query *parsetree, Node *qual);
void		AddHavingQual(Query *parsetree, Node *havingQual); 

void		AddNotQual(Query *parsetree, Node *qual);
void		FixResdomTypes(List *user_tlist);
void		FixNew(RewriteInfo *info, Query *parsetree);

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

#endif							/* REWRITEMANIP_H */
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`/*-------------------------------------------------------------------------`
			`*`
			`* rewriteManip.h--`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`*`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`*`
			`*`
			`* Copyright (c) 1994, Regents of the University of California`
			`*`
1) Queries using the having clause on base tables should work well now. Here some tested features, (examples included in the patch): 1.1) Subselects in the having clause 1.2) Double nested subselects 1.3) Subselects used in the where clause and in the having clause simultaneously 1.4) Union Selects using having 1.5) Indexes on the base relations are used correctly 1.6) Unallowed Queries are prevented (e.g. qualifications in the having clause that belong to the where clause) 1.7) Insert into as select 2) Queries using the having clause on view relations also work but there are some restrictions: 2.1) Create View as Select ... Having ...; using base tables in the select 2.1.1) The Query rewrite system: 2.1.2) Why are only simple queries allowed against a view from 2.1) ? 2.2) Select ... from testview1, testview2, ... having...; 3) Bug in ExecMergeJoin ?? Regards Stefan 1998-07-19 07:49:26 +02:00			`* $Id: rewriteManip.h,v 1.8 1998/07/19 05:49:26 momjian Exp $`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`#ifndef REWRITEMANIP_H`
			`#define REWRITEMANIP_H`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00
Cleanup up include files. 1997-11-26 02:14:33 +01:00			`#include "nodes/nodes.h"`
			`#include "nodes/parsenodes.h"`
			`#include "rewrite/rewriteHandler.h"`

Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00			`/* RewriteManip.c */`
Used modified version of indent that understands over 100 typedefs. 1997-09-08 23:56:23 +02:00			`void OffsetVarNodes(Node *node, int offset);`
pgindent run before 6.3 release, with Thomas' requested changes. 1998-02-26 05:46:47 +01:00			`void`
			`ChangeVarNodes(Node *node, int old_varno, int new_varno,`
			`int sublevels_up);`
Used modified version of indent that understands over 100 typedefs. 1997-09-08 23:56:23 +02:00			`void AddQual(Query parsetree, Node qual);`
1) Queries using the having clause on base tables should work well now. Here some tested features, (examples included in the patch): 1.1) Subselects in the having clause 1.2) Double nested subselects 1.3) Subselects used in the where clause and in the having clause simultaneously 1.4) Union Selects using having 1.5) Indexes on the base relations are used correctly 1.6) Unallowed Queries are prevented (e.g. qualifications in the having clause that belong to the where clause) 1.7) Insert into as select 2) Queries using the having clause on view relations also work but there are some restrictions: 2.1) Create View as Select ... Having ...; using base tables in the select 2.1.1) The Query rewrite system: 2.1.2) Why are only simple queries allowed against a view from 2.1) ? 2.2) Select ... from testview1, testview2, ... having...; 3) Bug in ExecMergeJoin ?? Regards Stefan 1998-07-19 07:49:26 +02:00			`void AddHavingQual(Query parsetree, Node havingQual);`

Used modified version of indent that understands over 100 typedefs. 1997-09-08 23:56:23 +02:00			`void AddNotQual(Query parsetree, Node qual);`
			`void FixResdomTypes(List *user_tlist);`
			`void FixNew(RewriteInfo info, Query parsetree);`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`void`
Used modified version of indent that understands over 100 typedefs. 1997-09-08 23:56:23 +02:00			`HandleRIRAttributeRule(Query parsetree, List rtable, List *targetlist,`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`int rt_index, int attr_num, int *modified,`
			`int *badpostquel);`
			`void`
Used modified version of indent that understands over 100 typedefs. 1997-09-08 23:56:23 +02:00			`HandleViewRule(Query parsetree, List rtable, List *targetlist,`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`int rt_index, int *modified);`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 08:22:35 +02:00
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 07:04:48 +02:00			`#endif /* REWRITEMANIP_H */`