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Add current_database().

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> Quick system function to pull out the current database.
>
> I've used this a number of times to allow stored procedures to find out
> where they are.  Especially useful for those that do logging or hit a
> remote server.
>
> It's called current_database() to match with current_user().

It's also a necessity for an informational schema.  The catalog
(database) name is required in a number of places.

Rod Taylor
This commit is contained in:
Bruce Momjian
2002-08-20 04:46:00 +00:00
parent f736fdb022
commit de9801fc62
4 changed files with 30 additions and 4 deletions
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19
src/backend/utils/adt/misc.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/misc.c,v 1.24 2002/06/20 20:29:37 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/misc.c,v 1.25 2002/08/20 04:45:59 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -17,6 +17,7 @@
#include <time.h>
#include "postgres.h"
#include "miscadmin.h"
#include "utils/builtins.h"
@ -111,3 +112,19 @@ userfntest(PG_FUNCTION_ARGS)
PG_RETURN_INT32(i);
}
/*
* current_database()
* Expose the current database to the user
*/
Datum
current_database(PG_FUNCTION_ARGS)
{
Name db;
db = (Name) palloc(NAMEDATALEN);
namestrcpy(db, DatabaseName);
PG_RETURN_NAME(db);
}