/usr/man2/cat.l/release_savepoint.l.Z

NAME

       RELEASE SAVEPOINT - destroy a previously defined savepoint

SYNOPSIS

       RELEASE [ SAVEPOINT ] savepoint_name

DESCRIPTION

       RELEASE  SAVEPOINT  destroys a savepoint previously defined in the cur-
       rent 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(l)].) Destroying a
       savepoint when it is no longer needed may allow 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(l)], COMMIT [commit(l)], ROLLBACK [rollback(l)], ROLLBACK
       TO SAVEPOINT [rollback_to_savepoint(l)], SAVEPOINT [savepoint(l)]

SQL - Language Statements         2005-11-05               RELEASE SAVEPOINT()