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44d5be0e53
There are some unimplemented aspects: recursive queries must use UNION ALL (should allow UNION too), and we don't have SEARCH or CYCLE clauses. These might or might not get done for 8.4, but even without them it's a pretty useful feature. There are also a couple of small loose ends and definitional quibbles, which I'll send a memo about to pgsql-hackers shortly. But let's land the patch now so we can get on with other development. Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane
95 lines
3.4 KiB
C
95 lines
3.4 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) 1996-2008, 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/parser/parse_relation.h,v 1.59 2008/10/04 21:56:55 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 bool add_missing_from;
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extern RangeTblEntry *refnameRangeTblEntry(ParseState *pstate,
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const char *schemaname,
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const char *refname,
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int location,
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int *sublevels_up);
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extern void checkNameSpaceConflicts(ParseState *pstate, List *namespace1,
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List *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 RangeTblEntry *GetRTEByRangeTablePosn(ParseState *pstate,
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int varno,
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int sublevels_up);
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extern CommonTableExpr *GetCTEForRTE(ParseState *pstate, RangeTblEntry *rte);
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extern Node *scanRTEForColumn(ParseState *pstate, RangeTblEntry *rte,
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char *colname, int location);
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extern Node *colNameToVar(ParseState *pstate, char *colname, bool localonly,
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int location);
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extern Node *qualifiedNameToVar(ParseState *pstate,
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char *schemaname,
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char *refname,
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char *colname,
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bool implicitRTEOK,
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int location);
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extern Relation parserOpenTable(ParseState *pstate, const RangeVar *relation,
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int lockmode);
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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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Relation rel,
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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 *addRangeTableEntryForFunction(ParseState *pstate,
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char *funcname,
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Node *funcexpr,
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RangeFunction *rangefunc,
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bool inFromCl);
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extern RangeTblEntry *addRangeTableEntryForValues(ParseState *pstate,
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List *exprs,
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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 RangeTblEntry *addRangeTableEntryForCTE(ParseState *pstate,
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CommonTableExpr *cte,
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Index levelsup,
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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,
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bool addToRelNameSpace, bool addToVarNameSpace);
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extern RangeTblEntry *addImplicitRTE(ParseState *pstate, RangeVar *relation);
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extern void expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
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int location, bool include_dropped,
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List **colnames, List **colvars);
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extern List *expandRelAttrs(ParseState *pstate, RangeTblEntry *rte,
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int rtindex, int sublevels_up, int location);
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extern int attnameAttNum(Relation rd, const char *attname, bool sysColOK);
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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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