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RELEASE SAVEPOINT()         SQL Commands         RELEASE SAVEPOINT()



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 [roll‐
       back_to_savepoint(7)].) 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  transac‐
       tion 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 spec‐
       ifies  that  the  key  word SAVEPOINT is mandatory, but Post‐
       greSQL allows it to be omitted.

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



SQL - Language Statements    2010-12-14          RELEASE SAVEPOINT()
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