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><H1
><A
NAME="SQL-RELEASE-SAVEPOINT"
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>RELEASE SAVEPOINT</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN76969"
></A
><H2
>Name</H2
>RELEASE SAVEPOINT&nbsp;--&nbsp;destroy a previously defined savepoint</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN76977"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>RELEASE [ SAVEPOINT ] <TT
CLASS="REPLACEABLE"
><I
>savepoint_name</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN76980"
></A
><H2
>Description</H2
><P
>   <TT
CLASS="COMMAND"
>RELEASE SAVEPOINT</TT
> destroys a savepoint previously defined
   in the current transaction.
  </P
><P
>   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 <A
HREF="sql-rollback-to.html"
>ROLLBACK TO SAVEPOINT</A
>.)
   Destroying a savepoint when
   it is no longer needed allows the system to reclaim some resources
   earlier than transaction end.
  </P
><P
>   <TT
CLASS="COMMAND"
>RELEASE SAVEPOINT</TT
> also destroys all savepoints that were
   established after the named savepoint was established.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN76988"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>savepoint_name</I
></TT
></DT
><DD
><P
>      The name of the savepoint to destroy.
     </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN76996"
></A
><H2
>Notes</H2
><P
>   Specifying a savepoint name that was not previously defined is an error.
  </P
><P
>   It is not possible to release a savepoint when the transaction is in
   an aborted state.
  </P
><P
>   If multiple savepoints have the same name, only the one that was most
   recently defined is released.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN77001"
></A
><H2
>Examples</H2
><P
>   To establish and later destroy a savepoint:
</P><PRE
CLASS="PROGRAMLISTING"
>BEGIN;
    INSERT INTO table1 VALUES (3);
    SAVEPOINT my_savepoint;
    INSERT INTO table1 VALUES (4);
    RELEASE SAVEPOINT my_savepoint;
COMMIT;</PRE
><P>
   The above transaction will insert both 3 and 4.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN77005"
></A
><H2
>Compatibility</H2
><P
>   This command conforms to the <ACRONYM
CLASS="ACRONYM"
>SQL</ACRONYM
> standard.  The standard
   specifies that the key word <TT
CLASS="LITERAL"
>SAVEPOINT</TT
> is
   mandatory, but <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> allows it to
   be omitted.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN77011"
></A
><H2
>See Also</H2
><A
HREF="sql-begin.html"
>BEGIN</A
>, <A
HREF="sql-commit.html"
>COMMIT</A
>, <A
HREF="sql-rollback.html"
>ROLLBACK</A
>, <A
HREF="sql-rollback-to.html"
>ROLLBACK TO SAVEPOINT</A
>, <A
HREF="sql-savepoint.html"
>SAVEPOINT</A
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