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/*-------------------------------------------------------------------------
*
* tupdesc.h--
* POSTGRES tuple descriptor definitions.
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: tupdesc.h,v 1.5 1996/11/04 07:45:28 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef TUPDESC_H
#define TUPDESC_H
#include <nodes/pg_list.h>
#include <access/attnum.h>
#include <catalog/pg_attribute.h>
typedef struct tupleDesc {
/*------------------------------------------------------------------------
This structure contains all the attribute information (i.e. from Class
pg_attribute) for a tuple.
-------------------------------------------------------------------------*/
int natts;
/* Number of attributes in the tuple */
AttributeTupleForm *attrs;
/* attrs[N] is a pointer to the description of Attribute Number N+1. */
} *TupleDesc;
extern TupleDesc CreateTemplateTupleDesc(int natts);
extern TupleDesc CreateTupleDesc(int natts, AttributeTupleForm *attrs);
extern TupleDesc CreateTupleDescCopy(TupleDesc tupdesc);
extern bool TupleDescInitEntry(TupleDesc desc,
AttrNumber attributeNumber,
char *attributeName,
char *typeName,
int attdim,
bool attisset);
extern TupleDesc BuildDescForRelation(List *schema, char *relname);
#endif /* TUPDESC_H */
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