freebsd 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)