var.h 1.03 KB
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/*-------------------------------------------------------------------------
 *
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 * var.h
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 *	  prototypes for optimizer/util/var.c.
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 *
 *
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 * Portions Copyright (c) 1996-2008, 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/var.h,v 1.39 2008/10/21 20:42:53 tgl Exp $
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 *
 *-------------------------------------------------------------------------
 */
#ifndef VAR_H
#define VAR_H

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#include "nodes/relation.h"
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extern Relids pull_varnos(Node *node);
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extern void pull_varattnos(Node *node, Bitmapset **varattnos);
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extern bool contain_var_clause(Node *node);
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extern bool contain_vars_of_level(Node *node, int levelsup);
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extern int	locate_var_of_level(Node *node, int levelsup);
extern int	locate_var_of_relation(Node *node, int relid, int levelsup);
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extern int	find_minimum_var_level(Node *node);
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extern List *pull_var_clause(Node *node, bool includePlaceHolderVars);
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extern Node *flatten_join_alias_vars(PlannerInfo *root, Node *node);
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#endif   /* VAR_H */