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/*-------------------------------------------------------------------------
*
* misc.c
*
*
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/misc.c,v 1.31 2003/08/04 02:40:05 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <sys/file.h>
#include <time.h>
#include "commands/dbcommands.h"
#include "miscadmin.h"
#include "utils/builtins.h"
/*
* Check if data is Null
*/
Datum
nullvalue(PG_FUNCTION_ARGS)
{
if (PG_ARGISNULL(0))
PG_RETURN_BOOL(true);
PG_RETURN_BOOL(false);
}
/*
* Check if data is not Null
*/
Datum
nonnullvalue(PG_FUNCTION_ARGS)
{
if (PG_ARGISNULL(0))
PG_RETURN_BOOL(false);
PG_RETURN_BOOL(true);
}
/*
* current_database()
* Expose the current database to the user
*/
Datum
current_database(PG_FUNCTION_ARGS)
{
Name db;
db = (Name) palloc(NAMEDATALEN);
namestrcpy(db, get_database_name(MyDatabaseId));
PG_RETURN_NAME(db);
}
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