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/*-------------------------------------------------------------------------
*
* parse_relation.h
* prototypes for parse_relation.c.
*
*
* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/parser/parse_relation.h
*
*-------------------------------------------------------------------------
*/
#ifndef PARSE_RELATION_H
#define PARSE_RELATION_H
#include "parser/parse_node.h"
/*
* Support for fuzzily matching column.
*
* This is for building diagnostic messages, where non-exact matching
* attributes are suggested to the user. The struct's fields may be facets of
* a particular RTE, or of an entire range table, depending on context.
*/
typedef struct
{
int distance; /* Weighted distance (lowest so far) */
RangeTblEntry *rfirst; /* RTE of first */
AttrNumber first; /* Closest attribute so far */
RangeTblEntry *rsecond; /* RTE of second */
AttrNumber second; /* Second closest attribute so far */
} FuzzyAttrMatchState;
extern RangeTblEntry *refnameRangeTblEntry(ParseState *pstate,
const char *schemaname,
const char *refname,
int location,
int *sublevels_up);
extern CommonTableExpr *scanNameSpaceForCTE(ParseState *pstate,
const char *refname,
Index *ctelevelsup);
extern void checkNameSpaceConflicts(ParseState *pstate, List *namespace1,
List *namespace2);
extern int RTERangeTablePosn(ParseState *pstate,
RangeTblEntry *rte,
int *sublevels_up);
extern RangeTblEntry *GetRTEByRangeTablePosn(ParseState *pstate,
int varno,
int sublevels_up);
extern CommonTableExpr *GetCTEForRTE(ParseState *pstate, RangeTblEntry *rte,
int rtelevelsup);
extern Node *scanRTEForColumn(ParseState *pstate, RangeTblEntry *rte,
char *colname, int location,
int fuzzy_rte_penalty, FuzzyAttrMatchState *fuzzystate);
extern Node *colNameToVar(ParseState *pstate, char *colname, bool localonly,
int location);
extern void markVarForSelectPriv(ParseState *pstate, Var *var,
RangeTblEntry *rte);
extern Relation parserOpenTable(ParseState *pstate, const RangeVar *relation,
int lockmode);
extern RangeTblEntry *addRangeTableEntry(ParseState *pstate,
RangeVar *relation,
Alias *alias,
bool inh,
bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForRelation(ParseState *pstate,
Relation rel,
Alias *alias,
bool inh,
bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForSubquery(ParseState *pstate,
Query *subquery,
Alias *alias,
bool lateral,
bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForFunction(ParseState *pstate,
List *funcnames,
List *funcexprs,
List *coldeflists,
RangeFunction *rangefunc,
bool lateral,
bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForValues(ParseState *pstate,
List *exprs,
List *collations,
Alias *alias,
bool lateral,
bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForJoin(ParseState *pstate,
List *colnames,
JoinType jointype,
List *aliasvars,
Alias *alias,
bool inFromCl);
extern RangeTblEntry *addRangeTableEntryForCTE(ParseState *pstate,
CommonTableExpr *cte,
Index levelsup,
RangeVar *rv,
bool inFromCl);
extern bool isLockedRefname(ParseState *pstate, const char *refname);
extern void addRTEtoQuery(ParseState *pstate, RangeTblEntry *rte,
bool addToJoinList,
bool addToRelNameSpace, bool addToVarNameSpace);
extern void errorMissingRTE(ParseState *pstate, RangeVar *relation) pg_attribute_noreturn();
extern void errorMissingColumn(ParseState *pstate,
char *relname, char *colname, int location) pg_attribute_noreturn();
extern void expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
int location, bool include_dropped,
List **colnames, List **colvars);
extern List *expandRelAttrs(ParseState *pstate, RangeTblEntry *rte,
int rtindex, int sublevels_up, int location);
extern int attnameAttNum(Relation rd, const char *attname, bool sysColOK);
extern Name attnumAttName(Relation rd, int attid);
extern Oid attnumTypeId(Relation rd, int attid);
extern Oid attnumCollationId(Relation rd, int attid);
extern bool isQueryUsingTempRelation(Query *query);
#endif /* PARSE_RELATION_H */
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