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>E.155. Release 8.1.14</A
></H1
><DIV
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><P
><B
>Release date: </B
>2008-09-22</P
></DIV
><P
> This release contains a variety of fixes from 8.1.13.
For information about new features in the 8.1 major release, see
<A
HREF="release-8-1.html"
>Section E.169</A
>.
</P
><DIV
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CLASS="SECT2"
><A
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>E.155.1. Migration to Version 8.1.14</A
></H2
><P
> 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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><DIV
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><H2
CLASS="SECT2"
><A
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>E.155.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
> Widen local lock counters from 32 to 64 bits (Tom)
</P
><P
> This responds to reports that the counters could overflow in
sufficiently long transactions, leading to unexpected <SPAN
CLASS="QUOTE"
>"lock is
already held"</SPAN
> errors.
</P
></LI
><LI
><P
> Fix possible duplicate output of tuples during a GiST index scan (Teodor)
</P
></LI
><LI
><P
> Add checks in executor startup to ensure that the tuples produced by an
<TT
CLASS="COMMAND"
>INSERT</TT
> or <TT
CLASS="COMMAND"
>UPDATE</TT
> will match the target table's
current rowtype (Tom)
</P
><P
> <TT
CLASS="COMMAND"
>ALTER COLUMN TYPE</TT
>, followed by re-use of a previously
cached plan, could produce this type of situation. The check protects
against data corruption and/or crashes that could ensue.
</P
></LI
><LI
><P
> Fix <TT
CLASS="LITERAL"
>AT TIME ZONE</TT
> to first try to interpret its timezone
argument as a timezone abbreviation, and only try it as a full timezone
name if that fails, rather than the other way around as formerly (Tom)
</P
><P
> The timestamp input functions have always resolved ambiguous zone names
in this order. Making <TT
CLASS="LITERAL"
>AT TIME ZONE</TT
> do so as well improves
consistency, and fixes a compatibility bug introduced in 8.1:
in ambiguous cases we now behave the same as 8.0 and before did,
since in the older versions <TT
CLASS="LITERAL"
>AT TIME ZONE</TT
> accepted
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>only</I
></SPAN
> abbreviations.
</P
></LI
><LI
><P
> Fix datetime input functions to correctly detect integer overflow when
running on a 64-bit platform (Tom)
</P
></LI
><LI
><P
> Improve performance of writing very long log messages to syslog (Tom)
</P
></LI
><LI
><P
> Fix bug in backwards scanning of a cursor on a <TT
CLASS="LITERAL"
>SELECT DISTINCT
ON</TT
> query (Tom)
</P
></LI
><LI
><P
> Fix planner bug with nested sub-select expressions (Tom)
</P
><P
> If the outer sub-select has no direct dependency on the parent query,
but the inner one does, the outer value might not get recalculated
for new parent query rows.
</P
></LI
><LI
><P
> Fix planner to estimate that <TT
CLASS="LITERAL"
>GROUP BY</TT
> expressions yielding
boolean results always result in two groups, regardless of the
expressions' contents (Tom)
</P
><P
> This is very substantially more accurate than the regular <TT
CLASS="LITERAL"
>GROUP
BY</TT
> estimate for certain boolean tests like <TT
CLASS="REPLACEABLE"
><I
>col</I
></TT
>
<TT
CLASS="LITERAL"
>IS NULL</TT
>.
</P
></LI
><LI
><P
> Fix PL/pgSQL to not fail when a <TT
CLASS="LITERAL"
>FOR</TT
> loop's target variable
is a record containing composite-type fields (Tom)
</P
></LI
><LI
><P
> Fix PL/Tcl to behave correctly with Tcl 8.5, and to be more careful
about the encoding of data sent to or from Tcl (Tom)
</P
></LI
><LI
><P
> Fix PL/Python to work with Python 2.5
</P
><P
> This is a back-port of fixes made during the 8.2 development cycle.
</P
></LI
><LI
><P
> Improve <SPAN
CLASS="APPLICATION"
>pg_dump</SPAN
> and <SPAN
CLASS="APPLICATION"
>pg_restore</SPAN
>'s
error reporting after failure to send a SQL command (Tom)
</P
></LI
><LI
><P
> Fix <SPAN
CLASS="APPLICATION"
>pg_ctl</SPAN
> to properly preserve postmaster
command-line arguments across a <TT
CLASS="LITERAL"
>restart</TT
> (Bruce)
</P
></LI
><LI
><P
> Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2008f (for
DST law changes in Argentina, Bahamas, Brazil, Mauritius, Morocco,
Pakistan, Palestine, and Paraguay)
</P
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