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9ab4d98168
a new PlannerInfo struct, which is passed around instead of the bare Query in all the planning code. This commit is essentially just a code-beautification exercise, but it does open the door to making larger changes to the planner data structures without having to muck with the widely-known Query struct.
31 lines
1017 B
C
31 lines
1017 B
C
/*-------------------------------------------------------------------------
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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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*
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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/var.h,v 1.33 2005/06/05 22:32:58 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef VAR_H
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#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 bool contain_var_reference(Node *node, int varno, int varattno,
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int levelsup);
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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 bool contain_vars_above_level(Node *node, 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 includeUpperVars);
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extern Node *flatten_join_alias_vars(PlannerInfo *root, Node *node);
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#endif /* VAR_H */
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