6c59886942
lists to join RTEs, attach a list of Vars and COALESCE expressions that will replace the join's alias variables during planning. This simplifies flatten_join_alias_vars while still making it easy to fix up varno references when transforming the query tree. Add regression test cases for interactions of subqueries with outer joins.
61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* parse_relation.h
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* prototypes for parse_relation.c.
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*
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*
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* Portions Copyright (c) 1996-2001, 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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* $Id: parse_relation.h,v 1.32 2002/04/28 19:54:29 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PARSE_RELATION_H
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#define PARSE_RELATION_H
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#include "parser/parse_node.h"
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extern RangeTblEntry *refnameRangeTblEntry(ParseState *pstate,
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char *refname,
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int *sublevels_up);
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extern void checkNameSpaceConflicts(ParseState *pstate, Node *namespace1,
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Node *namespace2);
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extern int RTERangeTablePosn(ParseState *pstate,
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RangeTblEntry *rte,
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int *sublevels_up);
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extern Node *colnameToVar(ParseState *pstate, char *colname);
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extern Node *qualifiedNameToVar(ParseState *pstate, char *refname,
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char *colname, bool implicitRTEOK);
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extern RangeTblEntry *addRangeTableEntry(ParseState *pstate,
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RangeVar *relation,
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Alias *alias,
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bool inh,
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bool inFromCl);
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extern RangeTblEntry *addRangeTableEntryForRelation(ParseState *pstate,
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Oid relid,
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Alias *alias,
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bool inh,
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bool inFromCl);
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extern RangeTblEntry *addRangeTableEntryForSubquery(ParseState *pstate,
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Query *subquery,
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Alias *alias,
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bool inFromCl);
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extern RangeTblEntry *addRangeTableEntryForJoin(ParseState *pstate,
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List *colnames,
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JoinType jointype,
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List *aliasvars,
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Alias *alias,
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bool inFromCl);
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extern void addRTEtoQuery(ParseState *pstate, RangeTblEntry *rte,
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bool addToJoinList, bool addToNameSpace);
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extern RangeTblEntry *addImplicitRTE(ParseState *pstate, RangeVar *relation);
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extern void expandRTE(ParseState *pstate, RangeTblEntry *rte,
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List **colnames, List **colvars);
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extern List *expandRelAttrs(ParseState *pstate, RangeTblEntry *rte);
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extern int attnameAttNum(Relation rd, char *a);
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extern Name attnumAttName(Relation rd, int attid);
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extern Oid attnumTypeId(Relation rd, int attid);
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#endif /* PARSE_RELATION_H */
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