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>E.133. Release 8.2.12</A
></H1
><DIV
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><P
><B
>Release date: </B
>2009-02-02</P
></DIV
><P
>   This release contains a variety of fixes from 8.2.11.
   For information about new features in the 8.2 major release, see
   <A
HREF="release-8-2.html"
>Section E.145</A
>.
  </P
><DIV
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><H2
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><A
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>E.133.1. Migration to Version 8.2.12</A
></H2
><P
>    A dump/restore is not required for those running 8.2.X.
    However, if you are upgrading from a version earlier than 8.2.11,
    see <A
HREF="release-8-2-11.html"
>Section E.134</A
>.
   </P
></DIV
><DIV
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><H2
CLASS="SECT2"
><A
NAME="AEN133391"
>E.133.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>      Improve handling of URLs in <CODE
CLASS="FUNCTION"
>headline()</CODE
> function (Teodor)
     </P
></LI
><LI
><P
>      Improve handling of overlength headlines in <CODE
CLASS="FUNCTION"
>headline()</CODE
>
      function (Teodor)
     </P
></LI
><LI
><P
>      Prevent possible Assert failure or misconversion if an encoding
      conversion is created with the wrong conversion function for the
      specified pair of encodings (Tom, Heikki)
     </P
></LI
><LI
><P
>      Fix possible Assert failure if a statement executed in PL/pgSQL is
      rewritten into another kind of statement, for example if an
      <TT
CLASS="COMMAND"
>INSERT</TT
> is rewritten into an <TT
CLASS="COMMAND"
>UPDATE</TT
> (Heikki)
     </P
></LI
><LI
><P
>      Ensure that a snapshot is available to datatype input functions (Tom)
     </P
><P
>      This primarily affects domains that are declared with <TT
CLASS="LITERAL"
>CHECK</TT
>
      constraints involving user-defined stable or immutable functions.  Such
      functions typically fail if no snapshot has been set.
     </P
></LI
><LI
><P
>      Make it safer for SPI-using functions to be used within datatype I/O;
      in particular, to be used in domain check constraints (Tom)
     </P
></LI
><LI
><P
>      Avoid unnecessary locking of small tables in <TT
CLASS="COMMAND"
>VACUUM</TT
>
      (Heikki)
     </P
></LI
><LI
><P
>      Fix a problem that made <TT
CLASS="LITERAL"
>UPDATE RETURNING tableoid</TT
>
      return zero instead of the correct OID (Tom)
     </P
></LI
><LI
><P
>      Fix planner misestimation of selectivity when transitive equality
      is applied to an outer-join clause (Tom)
     </P
><P
>      This could result in bad plans for queries like
      <TT
CLASS="LITERAL"
>... from a left join b on a.a1 = b.b1 where a.a1 = 42 ...</TT
>
     </P
></LI
><LI
><P
>      Improve optimizer's handling of long <TT
CLASS="LITERAL"
>IN</TT
> lists (Tom)
     </P
><P
>      This change avoids wasting large amounts of time on such lists
      when constraint exclusion is enabled.
     </P
></LI
><LI
><P
>      Ensure that the contents of a holdable cursor don't depend on the
      contents of TOAST tables (Tom)
     </P
><P
>      Previously, large field values in a cursor result might be represented
      as TOAST pointers, which would fail if the referenced table got dropped
      before the cursor is read, or if the large value is deleted and then
      vacuumed away.  This cannot happen with an ordinary cursor,
      but it could with a cursor that is held past its creating transaction.
     </P
></LI
><LI
><P
>      Fix memory leak when a set-returning function is terminated without
      reading its whole result (Tom)
     </P
></LI
><LI
><P
>      Fix <TT
CLASS="FILENAME"
>contrib/dblink</TT
>'s
      <CODE
CLASS="FUNCTION"
>dblink_get_result(text,bool)</CODE
> function (Joe)
     </P
></LI
><LI
><P
>      Fix possible garbage output from <TT
CLASS="FILENAME"
>contrib/sslinfo</TT
> functions
      (Tom)
     </P
></LI
><LI
><P
>      Fix <SPAN
CLASS="APPLICATION"
>configure</SPAN
> script to properly report failure when
      unable to obtain linkage information for PL/Perl (Andrew)
     </P
></LI
><LI
><P
>      Make all documentation reference <TT
CLASS="LITERAL"
>pgsql-bugs</TT
> and/or
      <TT
CLASS="LITERAL"
>pgsql-hackers</TT
> as appropriate, instead of the
      now-decommissioned <TT
CLASS="LITERAL"
>pgsql-ports</TT
> and <TT
CLASS="LITERAL"
>pgsql-patches</TT
>
      mailing lists (Tom)
     </P
></LI
><LI
><P
>      Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2009a (for
      Kathmandu and historical DST corrections in Switzerland, Cuba)
     </P
></LI
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