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6543d81d65
joins, and clean things up a good deal at the same time. Append plan node no longer hacks on rangetable at runtime --- instead, all child tables are given their own RT entries during planning. Concept of multiple target tables pushed up into execMain, replacing bug-prone implementation within nodeAppend. Planner now supports generating Append plans for inheritance sets either at the top of the plan (the old way) or at the bottom. Expanding at the bottom is appropriate for tables used as sources, since they may appear inside an outer join; but we must still expand at the top when the target of an UPDATE or DELETE is an inheritance set, because we actually need a different targetlist and junkfilter for each target table in that case. Fortunately a target table can't be inside an outer join... Bizarre mutual recursion between union_planner and prepunion.c is gone --- in fact, union_planner doesn't really have much to do with union queries anymore, so I renamed it grouping_planner.
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*-------------------------------------------------------------------------
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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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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: prep.h,v 1.25 2000/11/12 00:37:01 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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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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/*
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* prototypes for prepqual.c
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*/
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extern List *canonicalize_qual(Expr *qual, bool removeAndFlag);
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extern List *cnfify(Expr *qual, bool removeAndFlag);
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/*
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* prototypes for preptlist.c
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*/
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extern List *preprocess_targetlist(List *tlist, int command_type,
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Index result_relation, List *range_table);
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/*
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* prototypes for prepunion.c
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*/
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extern Plan *plan_set_operations(Query *parse);
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extern List *find_all_inheritors(Oid parentrel);
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extern List *expand_inherted_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,
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Index new_rt_index, Oid new_relid);
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#endif /* PREP_H */
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