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>Appendix E. Release Notes</TD
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><H1
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><A
NAME="RELEASE-9-2-5"
>E.20. Release 9.2.5</A
></H1
><DIV
CLASS="FORMALPARA"
><P
><B
>Release date: </B
>2013-10-10</P
></DIV
><P
> This release contains a variety of fixes from 9.2.4.
For information about new features in the 9.2 major release, see
<A
HREF="release-9-2.html"
>Section E.25</A
>.
</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN113490"
>E.20.1. Migration to Version 9.2.5</A
></H2
><P
> A dump/restore is not required for those running 9.2.X.
</P
><P
> However, if you are upgrading from a version earlier than 9.2.4,
see <A
HREF="release-9-2-4.html"
>Section E.21</A
>.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN113495"
>E.20.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
> Prevent corruption of multi-byte characters when attempting to
case-fold identifiers (Andrew Dunstan)
</P
><P
> <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> case-folds non-ASCII characters only
when using a single-byte server encoding.
</P
></LI
><LI
><P
> Fix memory leak when creating B-tree indexes on range columns
(Heikki Linnakangas)
</P
></LI
><LI
><P
> Fix checkpoint memory leak in background writer when <TT
CLASS="LITERAL"
>wal_level =
hot_standby</TT
> (Naoya Anzai)
</P
></LI
><LI
><P
> Fix memory leak caused by <CODE
CLASS="FUNCTION"
>lo_open()</CODE
> failure
(Heikki Linnakangas)
</P
></LI
><LI
><P
> Fix memory overcommit bug when <TT
CLASS="VARNAME"
>work_mem</TT
> is using more
than 24GB of memory (Stephen Frost)
</P
></LI
><LI
><P
> Serializable snapshot fixes (Kevin Grittner, Heikki Linnakangas)
</P
></LI
><LI
><P
> Fix deadlock bug in libpq when using SSL (Stephen Frost)
</P
></LI
><LI
><P
> Fix possible SSL state corruption in threaded libpq applications
(Nick Phillips, Stephen Frost)
</P
></LI
><LI
><P
> Improve estimate of planner cost when choosing between generic and
custom plans (Tom Lane)
</P
><P
> This change will favor generic plans when planning cost is high.
</P
></LI
><LI
><P
> Properly compute row estimates for boolean columns containing many NULL
values (Andrew Gierth)
</P
><P
> Previously tests like <TT
CLASS="LITERAL"
>col IS NOT TRUE</TT
> and <TT
CLASS="LITERAL"
>col IS
NOT FALSE</TT
> did not properly factor in NULL values when estimating
plan costs.
</P
></LI
><LI
><P
> Fix accounting for qualifier evaluation costs in <TT
CLASS="LITERAL"
>UNION ALL</TT
>
and inheritance queries (Tom Lane)
</P
><P
> This fixes cases where suboptimal query plans could be chosen if
some <TT
CLASS="LITERAL"
>WHERE</TT
> clauses are expensive to calculate.
</P
></LI
><LI
><P
> Prevent pushing down <TT
CLASS="LITERAL"
>WHERE</TT
> clauses into unsafe
<TT
CLASS="LITERAL"
>UNION/INTERSECT</TT
> subqueries (Tom Lane)
</P
><P
> Subqueries of a <TT
CLASS="LITERAL"
>UNION</TT
> or <TT
CLASS="LITERAL"
>INTERSECT</TT
> that
contain set-returning functions or volatile functions in their
<TT
CLASS="LITERAL"
>SELECT</TT
> lists could be improperly optimized, leading to
run-time errors or incorrect query results.
</P
></LI
><LI
><P
> Fix rare case of <SPAN
CLASS="QUOTE"
>"failed to locate grouping columns"</SPAN
>
planner failure (Tom Lane)
</P
></LI
><LI
><P
> Fix <SPAN
CLASS="APPLICATION"
>pg_dump</SPAN
> of foreign tables with dropped columns (Andrew Dunstan)
</P
><P
> Previously such cases could cause a <SPAN
CLASS="APPLICATION"
>pg_upgrade</SPAN
> error.
</P
></LI
><LI
><P
> Reorder <SPAN
CLASS="APPLICATION"
>pg_dump</SPAN
> processing of extension-related
rules and event triggers (Joe Conway)
</P
></LI
><LI
><P
> Force dumping of extension tables if specified by <TT
CLASS="COMMAND"
>pg_dump
-t</TT
> or <TT
CLASS="LITERAL"
>-n</TT
> (Joe Conway)
</P
></LI
><LI
><P
> Improve view dumping code's handling of dropped columns in referenced
tables (Tom Lane)
</P
></LI
><LI
><P
> Fix <TT
CLASS="COMMAND"
>pg_restore -l</TT
> with the directory archive to display
the correct format name (Fujii Masao)
</P
></LI
><LI
><P
> Properly record index comments created using <TT
CLASS="LITERAL"
>UNIQUE</TT
>
and <TT
CLASS="LITERAL"
>PRIMARY KEY</TT
> syntax (Andres Freund)
</P
><P
> This fixes a parallel <SPAN
CLASS="APPLICATION"
>pg_restore</SPAN
> failure.
</P
></LI
><LI
><P
> Cause <TT
CLASS="COMMAND"
>pg_basebackup -x</TT
> with an empty xlog directory
to throw an error rather than crashing (Magnus Hagander, Haruka
Takatsuka)
</P
></LI
><LI
><P
> Properly guarantee transmission of WAL files before clean switchover
(Fujii Masao)
</P
><P
> Previously, the streaming replication connection might close before all
WAL files had been replayed on the standby.
</P
></LI
><LI
><P
> Fix WAL segment timeline handling during recovery (Mitsumasa Kondo,
Heikki Linnakangas)
</P
><P
> WAL file recycling during standby recovery could lead to premature
recovery completion, resulting in data loss.
</P
></LI
><LI
><P
> Prevent errors in WAL replay due to references to uninitialized empty
pages (Andres Freund)
</P
></LI
><LI
><P
> Fix <TT
CLASS="COMMAND"
>REINDEX TABLE</TT
> and <TT
CLASS="COMMAND"
>REINDEX DATABASE</TT
>
to properly revalidate constraints and mark invalidated indexes as
valid (Noah Misch)
</P
><P
> <TT
CLASS="COMMAND"
>REINDEX INDEX</TT
> has always worked properly.
</P
></LI
><LI
><P
> Avoid deadlocks during insertion into SP-GiST indexes (Teodor Sigaev)
</P
></LI
><LI
><P
> Fix possible deadlock during concurrent <TT
CLASS="COMMAND"
>CREATE INDEX
CONCURRENTLY</TT
> operations (Tom Lane)
</P
></LI
><LI
><P
> Fix GiST index lookup crash (Tom Lane)
</P
></LI
><LI
><P
> Fix <CODE
CLASS="FUNCTION"
>regexp_matches()</CODE
> handling of zero-length matches
(Jeevan Chalke)
</P
><P
> Previously, zero-length matches like '^' could return too many matches.
</P
></LI
><LI
><P
> Fix crash for overly-complex regular expressions (Heikki Linnakangas)
</P
></LI
><LI
><P
> Fix regular expression match failures for back references combined with
non-greedy quantifiers (Jeevan Chalke)
</P
></LI
><LI
><P
> Prevent <TT
CLASS="COMMAND"
>CREATE FUNCTION</TT
> from checking <TT
CLASS="COMMAND"
>SET</TT
>
variables unless function body checking is enabled (Tom Lane)
</P
></LI
><LI
><P
> Allow <TT
CLASS="COMMAND"
>ALTER DEFAULT PRIVILEGES</TT
> to operate on schemas
without requiring CREATE permission (Tom Lane)
</P
></LI
><LI
><P
> Loosen restriction on keywords used in queries (Tom Lane)
</P
><P
> Specifically, lessen keyword restrictions for role names, language
names, <TT
CLASS="COMMAND"
>EXPLAIN</TT
> and <TT
CLASS="COMMAND"
>COPY</TT
> options, and
<TT
CLASS="COMMAND"
>SET</TT
> values. This allows <TT
CLASS="LITERAL"
>COPY ... (FORMAT
BINARY)</TT
> to work as expected; previously <TT
CLASS="LITERAL"
>BINARY</TT
> needed
to be quoted.
</P
></LI
><LI
><P
> Print proper line number during <TT
CLASS="COMMAND"
>COPY</TT
> failure (Heikki
Linnakangas)
</P
></LI
><LI
><P
> Fix <CODE
CLASS="FUNCTION"
>pgp_pub_decrypt()</CODE
> so it works for secret keys with
passwords (Marko Kreen)
</P
></LI
><LI
><P
> Make <SPAN
CLASS="APPLICATION"
>pg_upgrade</SPAN
> use <TT
CLASS="LITERAL"
>pg_dump
--quote-all-identifiers</TT
> to avoid problems with keyword changes
between releases (Tom Lane)
</P
></LI
><LI
><P
> Remove rare inaccurate warning during vacuum of index-less tables
(Heikki Linnakangas)
</P
></LI
><LI
><P
> Ensure that <TT
CLASS="COMMAND"
>VACUUM ANALYZE</TT
> still runs the ANALYZE phase
if its attempt to truncate the file is cancelled due to lock conflicts
(Kevin Grittner)
</P
></LI
><LI
><P
> Avoid possible failure when performing transaction control commands (e.g
<TT
CLASS="COMMAND"
>ROLLBACK</TT
>) in prepared queries (Tom Lane)
</P
></LI
><LI
><P
> Ensure that floating-point data input accepts standard spellings
of <SPAN
CLASS="QUOTE"
>"infinity"</SPAN
> on all platforms (Tom Lane)
</P
><P
> The C99 standard says that allowable spellings are <TT
CLASS="LITERAL"
>inf</TT
>,
<TT
CLASS="LITERAL"
>+inf</TT
>, <TT
CLASS="LITERAL"
>-inf</TT
>, <TT
CLASS="LITERAL"
>infinity</TT
>,
<TT
CLASS="LITERAL"
>+infinity</TT
>, and <TT
CLASS="LITERAL"
>-infinity</TT
>. Make sure we
recognize these even if the platform's <CODE
CLASS="FUNCTION"
>strtod</CODE
> function
doesn't.
</P
></LI
><LI
><P
> Avoid unnecessary reporting when <TT
CLASS="VARNAME"
>track_activities</TT
> is off
(Tom Lane)
</P
></LI
><LI
><P
> Expand ability to compare rows to records and arrays (Rafal Rzepecki,
Tom Lane)
</P
></LI
><LI
><P
> Prevent crash when <SPAN
CLASS="APPLICATION"
>psql</SPAN
>'s <TT
CLASS="ENVAR"
>PSQLRC</TT
> variable
contains a tilde (Bruce Momjian)
</P
></LI
><LI
><P
> Add spinlock support for ARM64 (Mark Salter)
</P
></LI
><LI
><P
> Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2013d
for DST law changes in Israel, Morocco, Palestine, and Paraguay.
Also, historical zone data corrections for Macquarie Island.
</P
></LI
></UL
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