prep.h 1.62 KB
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/*-------------------------------------------------------------------------
 *
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 * prep.h
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 *	  prototypes for files in optimizer/prep/
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 *
 *
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 * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
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 * Portions Copyright (c) 1994, Regents of the University of California
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 *
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 * $PostgreSQL: pgsql/src/include/optimizer/prep.h,v 1.48 2005/03/17 23:45:09 neilc Exp $
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 *
 *-------------------------------------------------------------------------
 */
#ifndef PREP_H
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#define PREP_H
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#include "nodes/parsenodes.h"
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#include "nodes/plannodes.h"
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#include "nodes/relation.h"

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/*
 * prototypes for prepjointree.c
 */
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extern int	from_collapse_limit;
extern int	join_collapse_limit;

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extern Node *pull_up_IN_clauses(Query *parse, Node *node);
extern Node *pull_up_subqueries(Query *parse, Node *jtnode,
				   bool below_outer_join);
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extern void reduce_outer_joins(Query *parse);
extern Node *simplify_jointree(Query *parse, Node *jtnode);
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extern Relids get_relids_in_jointree(Node *jtnode);
extern Relids get_relids_for_join(Query *parse, int joinrelid);
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/*
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 * prototypes for prepqual.c
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 */
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extern Expr *canonicalize_qual(Expr *qual);
extern Node *flatten_andors(Node *node);
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/*
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 * prototypes for preptlist.c
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 */
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extern List *preprocess_targetlist(Query *parse, List *tlist);
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/*
 * prototypes for prepunion.c
 */
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extern Plan *plan_set_operations(Query *parse, List **sortClauses);
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extern List *find_all_inheritors(Oid parentrel);
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extern List *expand_inherited_rtentry(Query *parse, Index rti);
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extern Node *adjust_inherited_attrs(Node *node,
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					   Index old_rt_index, Oid old_relid,
					   Index new_rt_index, Oid new_relid);
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#endif   /* PREP_H */