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c82c92b111
All along, this function should have treated WindowFuncs in a manner similar to Aggrefs, ie with an option whether or not to recurse into them. By not considering the case, it was always recursing, which is OK for most callers (although I suspect that the case in prepare_sort_from_pathkeys might represent a bug). But now we need return-without-recursing behavior as well. There are also more than a few callers that should never see a WindowFunc, and now we'll get some error checking on that.
41 lines
1.5 KiB
C
41 lines
1.5 KiB
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) 1996-2016, 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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* src/include/optimizer/var.h
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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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/* Bits that can be OR'd into the flags argument of pull_var_clause() */
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#define PVC_INCLUDE_AGGREGATES 0x0001 /* include Aggrefs in output list */
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#define PVC_RECURSE_AGGREGATES 0x0002 /* recurse into Aggref arguments */
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#define PVC_INCLUDE_WINDOWFUNCS 0x0004 /* include WindowFuncs in output list */
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#define PVC_RECURSE_WINDOWFUNCS 0x0008 /* recurse into WindowFunc arguments */
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#define PVC_INCLUDE_PLACEHOLDERS 0x0010 /* include PlaceHolderVars in
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* output list */
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#define PVC_RECURSE_PLACEHOLDERS 0x0020 /* recurse into PlaceHolderVar
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* arguments */
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extern Relids pull_varnos(Node *node);
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extern Relids pull_varnos_of_level(Node *node, int levelsup);
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extern void pull_varattnos(Node *node, Index varno, Bitmapset **varattnos);
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extern List *pull_vars_of_level(Node *node, 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 int locate_var_of_level(Node *node, int levelsup);
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extern List *pull_var_clause(Node *node, int flags);
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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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