linux man page for release_savepoint

RELEASE 
SAVEPOINT(7)						   SQL Commands 					      RELEASE SAVEPOINT(7)

NAME
       RELEASE SAVEPOINT - destroy a previously defined savepoint

SYNOPSIS
       RELEASE [ SAVEPOINT ] savepoint_name

DESCRIPTION
       RELEASE SAVEPOINT destroys a savepoint previously defined in the current transaction.

       Destroying a savepoint makes it unavailable as a rollback point, but it has no other user visible behavior. It does not undo the effects of
       commands executed after the savepoint was established.  (To do that, see ROLLBACK TO SAVEPOINT  [rollback_to_savepoint(7)].)  Destroying  a
       savepoint when it is no longer needed allows the system to reclaim some resources earlier than transaction end.

       RELEASE SAVEPOINT also destroys all savepoints that were established after the named savepoint was established.

PARAMETERS
       savepoint_name
	      The name of the savepoint to destroy.

NOTES
       Specifying a savepoint name that was not previously defined is an error.

       It is not possible to release a savepoint when the transaction is in an aborted state.

       If multiple savepoints have the same name, only the one that was most recently defined is released.

EXAMPLES
       To establish and later destroy a savepoint:

       BEGIN;
	   INSERT INTO table1 VALUES (3);
	   SAVEPOINT my_savepoint;
	   INSERT INTO table1 VALUES (4);
	   RELEASE SAVEPOINT my_savepoint;
       COMMIT;

       The above transaction will insert both 3 and 4.

COMPATIBILITY
       This  command conforms to the SQL standard. The standard specifies that the key word SAVEPOINT is mandatory, but PostgreSQL allows it to be
       omitted.

SEE ALSO
       BEGIN [begin(7)], COMMIT [commit(7)], ROLLBACK [rollback(7)], ROLLBACK TO SAVEPOINT [rollback_to_savepoint(7)], SAVEPOINT [savepoint(7)]

SQL - Language Statements					    2010-05-14						      RELEASE SAVEPOINT(7)