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>Appendix E. Release Notes</TD
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>E.160. Release 8.1.9</A
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><B
>Release date: </B
>2007-04-23</P
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><P
>   This release contains a variety of fixes from 8.1.8,
   including a security fix.
   For information about new features in the 8.1 major release, see
   <A
HREF="release-8-1.html"
>Section E.169</A
>.
  </P
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>E.160.1. Migration to Version 8.1.9</A
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>    A dump/restore is not required for those running 8.1.X.
    However, if you are upgrading from a version earlier than 8.1.2,
    see <A
HREF="release-8-1-2.html"
>Section E.167</A
>.
   </P
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>E.160.2. Changes</A
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><LI
><P
>     Support explicit placement of the temporary-table schema within
     <TT
CLASS="VARNAME"
>search_path</TT
>, and disable searching it for functions
     and operators (Tom)
    </P
><P
>     This is needed to allow a security-definer function to set a
     truly secure value of <TT
CLASS="VARNAME"
>search_path</TT
>.  Without it,
     an unprivileged SQL user can use temporary objects to execute code
     with the privileges of the security-definer function (CVE-2007-2138).
     See <TT
CLASS="COMMAND"
>CREATE FUNCTION</TT
> for more information.
    </P
></LI
><LI
><P
>     <TT
CLASS="FILENAME"
>/contrib/tsearch2</TT
> crash fixes (Teodor)
    </P
></LI
><LI
><P
>     Require <TT
CLASS="COMMAND"
>COMMIT PREPARED</TT
> to be executed in the same
     database as the transaction was prepared in (Heikki)
    </P
></LI
><LI
><P
>     Fix potential-data-corruption bug in how <TT
CLASS="COMMAND"
>VACUUM FULL</TT
> handles
     <TT
CLASS="COMMAND"
>UPDATE</TT
> chains (Tom, Pavan Deolasee)
    </P
></LI
><LI
><P
>     Planner fixes, including improving outer join and bitmap scan
     selection logic (Tom)
    </P
></LI
><LI
><P
>     Fix PANIC during enlargement of a hash index (bug introduced in 8.1.6)
     (Tom)
    </P
></LI
><LI
><P
>     Fix POSIX-style timezone specs to follow new USA DST rules (Tom)
    </P
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