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05e3d0ee86
SQL92 semantics, including support for ALL option. All three can be used in subqueries and views. DISTINCT and ORDER BY work now in views, too. This rewrite fixes many problems with cross-datatype UNIONs and INSERT/SELECT where the SELECT yields different datatypes than the INSERT needs. I did that by making UNION subqueries and SELECT in INSERT be treated like subselects-in-FROM, thereby allowing an extra level of targetlist where the datatype conversions can be inserted safely. INITDB NEEDED!
43 lines
1.1 KiB
C
43 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 1.24 2000/10/05 19:11:37 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 bool find_inheritable_rt_entry(List *rangetable,
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Index *rt_index, List **inheritors);
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extern Plan *plan_inherit_queries(Query *root, List *tlist,
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Index rt_index, List *inheritors);
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#endif /* PREP_H */
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