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First-draft release notes for 9.6.2. 

As usual, the release notes for other branches will be made by cutting
these down, but put them up for community review first.
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doc/src/sgml/release-9.6.sgml
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<!-- doc/src/sgml/release-9.6.sgml -->
<!-- See header comment in release.sgml about typical markup -->
<sect1 id="release-9-6-2">
<title>Release 9.6.2</title>
<note>
<title>Release Date</title>
<simpara>2017-02-09</simpara>
</note>
<para>
This release contains a variety of fixes from 9.6.1.
For information about new features in the 9.6 major release, see
<xref linkend="release-9-6">.
</para>
<sect2>
<title>Migration to Version 9.6.2</title>
<para>
A dump/restore is not required for those running 9.6.X.
</para>
<para>
However, if you are upgrading from a version earlier than 9.6.1,
see <xref linkend="release-9-6-1">.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ffaa44cb5] 2016-11-15 15:55:35 -0500
Branch: REL9_6_STABLE [8aa3e4751] 2016-11-15 15:55:35 -0500
Branch: REL9_5_STABLE [0bc3ed98c] 2016-11-15 15:55:35 -0500
Branch: REL9_4_STABLE [3e844a34b] 2016-11-15 15:55:36 -0500
-->
<para>
Ensure that the special snapshot used for catalog scans is not
invalidated by premature data pruning (Tom Lane)
</para>
<para>
Backends failed to account for this snapshot when advertising their
oldest xmin, potentially allowing concurrent vacuuming operations to
remove data that was still needed. This led to transient failures
along the lines of <quote>cache lookup failed for relation 1255</>.
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [7403561c0] 2017-01-09 18:19:29 -0300
Branch: REL9_6_STABLE [4482c6a23] 2017-01-09 18:19:29 -0300
Branch: REL9_5_STABLE [ed8e8b814] 2017-01-09 18:19:29 -0300
-->
<para>
Fix incorrect WAL logging for BRIN indexes (Kuntal Ghosh)
</para>
<para>
The WAL record emitted for a BRIN <quote>revmap</> page when moving an
index tuple to a different page was incorrect. Replay would make the
related portion of the index useless, forcing it to be recomputed.
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [fa0f466d5] 2016-12-08 14:12:08 -0500
Branch: REL9_6_STABLE [1ed3c6ff9] 2016-12-08 14:13:55 -0500
Branch: REL9_5_STABLE [141ad6896] 2016-12-08 14:14:12 -0500
Branch: REL9_4_STABLE [68e56eef6] 2016-12-08 14:14:27 -0500
Branch: REL9_3_STABLE [8e403f215] 2016-12-08 14:16:47 -0500
Branch: REL9_2_STABLE [a00ac6299] 2016-12-08 14:19:25 -0500
-->
<para>
Unconditionally WAL-log creation of the <quote>init fork</> for an
unlogged table (Michael Paquier)
</para>
<para>
Previously, this was skipped when <xref linkend="guc-wal-level">
= <literal>minimal</>, but actually it's necessary even in that case
to ensure that the unlogged table is properly reset to empty after a
crash.
</para>
</listitem>
<listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: REL9_2_STABLE [38bec1805] 2017-01-25 07:02:25 +0900
-->
<para>
Fix WAL page header validation when re-reading segments (Takayuki
Tsunakawa, Amit Kapila)
</para>
<para>
In corner cases, a spurious <quote>out-of-sequence TLI</> error
could be reported during recovery.
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: REL9_5_STABLE [c0db1ec26] 2016-11-17 13:31:30 -0300
Branch: REL9_4_STABLE [30e3cb307] 2016-11-17 13:31:30 -0300
-->
<para>
Reduce interlocking on standby servers during the replay of btree
index vacuuming operations (Simon Riggs)
</para>
<para>
This change avoids substantial replication delays that sometimes
occurred while replaying such operations.
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [4f714b2fd] 2016-10-27 14:27:40 -0400
Branch: REL9_6_STABLE [4a43a6244] 2016-10-27 14:54:35 -0400
Branch: REL9_5_STABLE [0cbd199fd] 2016-10-27 14:54:39 -0400
Branch: REL9_4_STABLE [4a8cfbdcb] 2016-10-27 14:56:37 -0400
Branch: REL9_3_STABLE [e927f55ff] 2016-10-27 14:56:42 -0400
Branch: REL9_2_STABLE [2be2838a7] 2016-10-27 14:56:53 -0400
-->
<para>
If the stats collector dies during hot standby, restart it (Takayuki
Tsunakawa)
</para>
</listitem>
<listitem>
<!--
Author: Simon Riggs <simon@2ndQuadrant.com>
Branch: REL9_6_STABLE [95d1b4145] 2017-01-26 20:06:44 +0000
Branch: REL9_5_STABLE [99289e506] 2017-01-26 20:09:18 +0000
Branch: REL9_4_STABLE [800d89a98] 2017-01-26 20:10:19 +0000
Branch: REL9_3_STABLE [048d44175] 2017-01-26 20:15:23 +0000
-->
<para>
Ensure that hot standby feedback works correctly when it's enabled at
standby server start (Ants Aasma, Craig Ringer)
</para>
</listitem>
<listitem>
<!--
Author: Simon Riggs <simon@2ndQuadrant.com>
Branch: master [e8ee3d6b8] 2017-01-26 18:59:58 +0000
Branch: REL9_6_STABLE [40b7800da] 2017-01-27 12:13:20 +0000
Branch: REL9_5_STABLE [ace2cd80a] 2017-01-27 12:15:02 +0000
Branch: REL9_4_STABLE [357e06128] 2017-01-27 12:16:18 +0000
Branch: REL9_3_STABLE [332068a21] 2017-01-27 12:18:07 +0000
Branch: REL9_2_STABLE [15c54e836] 2017-01-27 12:19:50 +0000
-->
<para>
Check for interrupts while hot standby is waiting for a conflicting
query (Simon Riggs)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [c6a389792] 2017-01-20 15:55:45 -0500
Branch: REL9_6_STABLE [746ba76f1] 2017-01-20 16:11:45 -0500
Branch: REL9_5_STABLE [aeaaf62aa] 2017-01-20 16:14:11 -0500
Branch: REL9_4_STABLE [806f9b3d7] 2017-01-20 16:16:46 -0500
Branch: REL9_3_STABLE [5c5788e90] 2017-01-20 16:18:55 -0500
Branch: REL9_2_STABLE [5dff230eb] 2017-01-20 16:26:39 -0500
-->
<para>
Avoid constantly respawning the autovacuum launcher in a corner case
(Amit Khandekar)
</para>
<para>
This fix avoids problems when autovacuum is nominally off and there
are some tables that require freezing, but all such tables are
already being processed by autovacuum workers.
</para>
</listitem>
<listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [93eb619cd] 2016-12-17 02:22:15 +0900
Branch: REL9_6_STABLE [6c75fb6b3] 2016-12-17 02:25:47 +0900
-->
<para>
Disallow setting the <replaceable>num_sync</> field to zero in
<xref linkend="guc-synchronous-standby-names"> (Fujii Masao)
</para>
<para>
The correct way to disable synchronous standby is to set the whole
value to an empty string.
</para>
</listitem>
<listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [f1169ab50] 2017-02-01 18:02:43 -0500
Branch: REL9_6_STABLE [13752743b] 2017-02-01 17:59:53 -0500
-->
<para>
Don't count background worker processes against a user's connection
limit (David Rowley)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [182db0704] 2016-11-26 13:31:35 -0500
Branch: REL9_6_STABLE [0cc8453ac] 2016-11-26 13:31:35 -0500
Branch: REL9_5_STABLE [576bd360b] 2016-11-26 13:31:35 -0500
Branch: REL9_4_STABLE [313786a74] 2016-11-26 13:31:35 -0500
Branch: REL9_3_STABLE [2cbb62db1] 2016-11-26 13:31:35 -0500
Branch: REL9_2_STABLE [a982b02a4] 2016-11-26 13:31:35 -0500
-->
<para>
Fix check for when an extension member object can be dropped (Tom Lane)
</para>
<para>
Extension upgrade scripts should be able to drop member objects,
but this was disallowed for serial-column sequences, and possibly
other cases.
</para>
</listitem>
<listitem>
<!--
Author: Stephen Frost <sfrost@snowman.net>
Branch: master [e54f75722] 2017-01-29 23:05:07 -0500
Branch: REL9_6_STABLE [20064c0ec] 2017-01-29 23:05:09 -0500
-->
<para>
Fix tracking of initial privileges for extension member objects so
that it works correctly with <command>ALTER EXTENSION ... ADD/DROP</>
(Stephen Frost)
</para>
<para>
An object's current privileges at the time it is added to the
extension will now be considered its default privileges; only
later changes in its privileges will be dumped by
subsequent <application>pg_dump</> runs.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bd673e8e8] 2016-11-23 13:45:55 -0500
Branch: REL9_6_STABLE [4a5e1d370] 2016-11-23 13:45:56 -0500
Branch: REL9_5_STABLE [e0375d77b] 2016-11-23 13:45:56 -0500
Branch: REL9_4_STABLE [15f3e0cb1] 2016-11-23 13:45:56 -0500
Branch: REL9_3_STABLE [8f67a6c22] 2016-11-23 13:45:56 -0500
Branch: REL9_2_STABLE [05975ab0a] 2016-11-23 13:45:56 -0500
-->
<para>
Make sure <command>ALTER TABLE</> preserves index tablespace
assignments when rebuilding indexes (Tom Lane, Michael Paquier)
</para>
<para>
Previously, non-default settings
of <xref linkend="guc-default-tablespace"> could result in broken
indexes.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a522fc3d8] 2016-10-26 17:05:06 -0400
Branch: REL9_6_STABLE [445035a6e] 2016-10-26 17:05:06 -0400
Branch: REL9_5_STABLE [b53c841e5] 2016-10-26 17:05:06 -0400
Branch: REL9_4_STABLE [3a9a8c408] 2016-10-26 17:05:06 -0400
-->
<para>
Fix incorrect updating of trigger function properties when changing a
foreign-key constraint's deferrability properties with <command>ALTER
TABLE ... ALTER CONSTRAINT</> (Tom Lane)
</para>
<para>
This led to odd failures during subsequent exercise of the foreign
key, as the triggers were fired at the wrong times.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4e026b32d] 2016-11-25 13:44:47 -0500
Branch: REL9_6_STABLE [bf5fe7bfa] 2016-11-25 13:44:47 -0500
Branch: REL9_5_STABLE [6cbe84c82] 2016-11-25 13:44:48 -0500
Branch: REL9_4_STABLE [f7166ce24] 2016-11-25 13:44:48 -0500
Branch: REL9_3_STABLE [05bef7b08] 2016-11-25 13:44:48 -0500
Branch: REL9_2_STABLE [6a363a4c2] 2016-11-25 13:44:48 -0500
-->
<para>
Prevent dropping a foreign-key constraint if there are pending
trigger events for the referenced relation (Tom Lane)
</para>
<para>
This avoids <quote>could not find trigger <replaceable>NNN</></quote>
or <quote>relation <replaceable>NNN</> has no triggers</quote> errors.
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [3957b58b8] 2017-01-09 19:26:58 -0300
Branch: REL9_6_STABLE [4e563a1f6] 2017-01-09 19:26:58 -0300
Branch: REL9_5_STABLE [4d4ab6ccd] 2017-01-09 19:26:58 -0300
-->
<para>
Fix <command>ALTER TABLE ... SET DATA TYPE ... USING</> when child
table has different column ordering than the parent
(&Aacute;lvaro Herrera)
</para>
<para>
Failure to adjust the column numbering in the <literal>USING</>
expression led to errors,
typically <quote>attribute <replaceable>N</> has wrong type</quote>.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d86f40009] 2017-01-04 18:00:11 -0500
Branch: REL9_6_STABLE [f64554b99] 2017-01-04 18:00:11 -0500
Branch: REL9_5_STABLE [50c8196f9] 2017-01-04 18:00:11 -0500
Branch: REL9_4_STABLE [696d40d30] 2017-01-04 18:00:11 -0500
Branch: REL9_3_STABLE [5f89a9885] 2017-01-04 18:00:12 -0500
Branch: REL9_2_STABLE [6c4cf2be8] 2017-01-04 18:00:12 -0500
-->
<para>
Fix processing of OID column when a table with OIDs is associated to
a parent with OIDs via <command>ALTER TABLE ... INHERIT</> (Amit
Langote)
</para>
<para>
The OID column should be treated the same as regular user columns in
this case, but it wasn't, leading to odd behavior in later
inheritance changes.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1ead0208b] 2016-12-22 16:23:38 -0500
Branch: REL9_6_STABLE [68330c8b4] 2016-12-22 16:23:34 -0500
-->
<para>
Ensure that <command>CREATE TABLE ... LIKE ... WITH OIDS</> creates
a table with OIDs, whether or not the <literal>LIKE</>-referenced
table(s) have OIDs (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [58b136264] 2016-12-21 16:58:18 +0000
Branch: REL9_6_STABLE [a46ee6b30] 2016-12-21 17:01:52 +0000
Branch: REL9_5_STABLE [78a98b767] 2016-12-21 17:02:47 +0000
Branch: REL9_4_STABLE [cad24980e] 2016-12-21 17:03:54 +0000
-->
<para>
Fix <command>CREATE OR REPLACE VIEW</> to update the view query
before attempting to apply the new view options (Dean Rasheed)
</para>
<para>
Previously the command would fail if the new options were
inconsistent with the old view definition.
</para>
</listitem>
<listitem>
<!--
Author: Stephen Frost <sfrost@snowman.net>
Branch: master [12bd7dd31] 2016-12-22 17:08:43 -0500
Branch: REL9_6_STABLE [f0f2e56ac] 2016-12-22 17:08:47 -0500
Branch: REL9_5_STABLE [e82369217] 2016-12-22 17:08:49 -0500
Branch: REL9_4_STABLE [ac1ec9c1f] 2016-12-22 17:08:58 -0500
Branch: REL9_3_STABLE [0e3aadb68] 2016-12-22 17:09:00 -0500
-->
<para>
Report correct object identity during <command>ALTER TEXT SEARCH
CONFIGURATION</> (Artur Zakirov)
</para>
<para>
The wrong catalog OID was reported to extensions such as logical
decoding.
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [4aaddf2f0] 2016-11-24 15:39:55 -0300
Branch: REL9_6_STABLE [9b6634290] 2016-11-24 15:39:55 -0300
Branch: REL9_5_STABLE [7816d1356] 2016-11-24 15:39:55 -0300
-->
<para>
Fix commit timestamp mechanism to not fail when queried about
the special XIDs <literal>FrozenTransactionId</>
and <literal>BootstrapTransactionId</> (Craig Ringer)
</para>
</listitem>
<listitem>
<!--
Author: Kevin Grittner <kgrittn@postgresql.org>
Branch: REL9_5_STABLE [bed2a0b06] 2016-12-13 19:14:42 -0600
Branch: REL9_4_STABLE [4b9d466c1] 2016-12-13 19:05:12 -0600
Branch: REL9_3_STABLE [5d80171ad] 2016-12-13 19:05:35 -0600
Branch: REL9_2_STABLE [60314e28e] 2016-12-13 19:08:09 -0600
-->
<para>
Check for serializability conflicts before reporting
constraint-violation failures (Thomas Munro)
</para>
<para>
When using serializable transaction isolation, it is desirable
that any error due to concurrent transactions should manifest
as a serialization failure, thereby cueing the application that
a retry might succeed. Unfortunately, this does not reliably
happen for duplicate-key failures caused by concurrent insertions.
This change ensures that such an error will be reported as a
serialization error if the application explicitly checked for
the presence of a conflicting key (and did not find it) earlier
in the transaction.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e3e66d8a9] 2016-11-07 12:08:18 -0500
Branch: REL9_6_STABLE [5ee3a7453] 2016-11-07 12:08:19 -0500
Branch: REL9_5_STABLE [e2f5cd9cf] 2016-11-07 12:08:19 -0500
Branch: master [530f80652] 2016-11-10 15:00:58 -0500
Branch: REL9_6_STABLE [05a6e8728] 2016-11-10 15:00:58 -0500
Branch: REL9_5_STABLE [6e00ba1e1] 2016-11-10 15:00:58 -0500
-->
<para>
Fix incorrect use of view reloptions as regular table reloptions (Tom
Lane)
</para>
<para>
The symptom was spurious <quote>ON CONFLICT is not supported on table
... used as a catalog table</> errors when the target
of <command>INSERT ... ON CONFLICT</> is a view with cascade option.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [385072320] 2016-12-04 15:02:45 -0500
Branch: REL9_6_STABLE [da05d0ebc] 2016-12-04 15:02:46 -0500
Branch: REL9_5_STABLE [25c06a1ed] 2016-12-04 15:02:48 -0500
-->
<para>
Fix incorrect <quote>target lists can have at most <replaceable>N</>
entries</quote> complaint when using <literal>ON CONFLICT</> with
wide tables (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [da8f3ebf3] 2016-11-02 14:32:13 -0400
Branch: REL9_6_STABLE [f4d865f22] 2016-11-02 14:32:13 -0400
-->
<para>
Fix spurious <quote>query provides a value for a dropped column</>
errors during <command>INSERT</> or <command>UPDATE</> on a table
with a dropped column (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c5f365f3a] 2016-11-20 14:26:19 -0500
Branch: REL9_6_STABLE [90f8b4be5] 2016-11-20 14:26:19 -0500
Branch: REL9_5_STABLE [aeb5e8242] 2016-11-20 14:26:19 -0500
Branch: REL9_4_STABLE [44c8b4fcd] 2016-11-20 14:26:19 -0500
Branch: REL9_3_STABLE [71db302ec] 2016-11-20 14:26:19 -0500
-->
<para>
Prevent multicolumn expansion of <replaceable>foo</><literal>.*</> in
an <command>UPDATE</> source expression (Tom Lane)
</para>
<para>
This led to <quote>UPDATE target count mismatch --- internal
error</>. Now the syntax is understood as a whole-row variable,
as it would be in other contexts.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL9_6_STABLE [cf22c8cb8] 2016-12-09 12:01:14 -0500
Branch: REL9_5_STABLE [6a493adda] 2016-12-09 12:01:14 -0500
Branch: REL9_4_STABLE [c7a62135a] 2016-12-09 12:01:14 -0500
Branch: REL9_3_STABLE [2afe282a3] 2016-12-09 12:01:14 -0500
Branch: REL9_2_STABLE [082d1fb9e] 2016-12-09 12:01:14 -0500
-->
<para>
Ensure that column typmods are determined accurately for
multi-row <literal>VALUES</> constructs (Tom Lane)
</para>
<para>
This fixes problems occurring when the first value in a column has a
determinable typmod (e.g., length for a <type>varchar</> value) but
later values don't share the same limit.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a8ae12322] 2016-12-21 17:39:32 -0500
Branch: REL9_6_STABLE [88e1e91da] 2016-12-21 17:39:32 -0500
Branch: REL9_5_STABLE [d5633af7b] 2016-12-21 17:39:32 -0500
Branch: REL9_4_STABLE [d0f60e4cc] 2016-12-21 17:39:32 -0500
Branch: REL9_3_STABLE [a57695d9a] 2016-12-21 17:39:33 -0500
Branch: REL9_2_STABLE [6e2c21ec5] 2016-12-21 17:39:33 -0500
-->
<para>
Throw error for an unfinished Unicode surrogate pair at the end of a
Unicode string (Tom Lane)
</para>
<para>
Normally, a Unicode surrogate leading character must be followed by a
Unicode surrogate trailing character, but the check for this was
missed if the leading character was the last character in a Unicode
string literal (<literal>U&amp;'...'</>) or Unicode identifier
(<literal>U&amp;"..."</>).
</para>
</listitem>
<listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [db80acfc9] 2016-12-20 09:20:17 +0200
Branch: REL9_6_STABLE [ce92fc4e2] 2016-12-20 09:20:30 +0200
-->
<para>
Fix execution of <literal>DISTINCT</> and ordered aggregates when
multiple such aggregates are able to share the same transition state
(Heikki Linnakangas)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [89fcea1ac] 2016-12-21 15:18:39 -0500
Branch: REL9_6_STABLE [4e2477b7b] 2016-12-21 15:18:40 -0500
Branch: master [260443847] 2016-12-19 13:49:50 -0500
Branch: REL9_6_STABLE [3f07eff10] 2016-12-19 13:49:45 -0500
-->
<para>
Fix implementation of phrase search operators in <type>tsquery</>
(Tom Lane)
</para>
<para>
Remove incorrect, and inconsistently-applied, rewrite rules that
tried to transform away AND/OR/NOT operators appearing below a PHRASE
operator; instead upgrade the execution engine to handle such cases
correctly. This fixes assorted strange behavior and possible crashes
for text search queries containing such combinations. Also fix
nested PHRASE operators to work sanely in combinations other than
simple left-deep trees, correct the behavior when removing stopwords
from a phrase search clause, and make sure that index searches behave
consistently with simple sequential-scan application of such queries.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9d4ca0131] 2017-01-26 12:18:07 -0500
Branch: REL9_6_STABLE [2dfc12647] 2017-01-26 12:17:47 -0500
Branch: REL9_5_STABLE [423ad86f4] 2017-01-26 12:17:47 -0500
Branch: REL9_4_STABLE [2c1976a6c] 2017-01-26 12:17:47 -0500
Branch: REL9_3_STABLE [2e024f83b] 2017-01-26 12:17:47 -0500
Branch: REL9_2_STABLE [fe6120f9b] 2017-01-26 12:17:47 -0500
-->
<para>
Ensure that a purely negative text search query, such
as <literal>!foo</>, matches empty <type>tsvector</>s (Tom Dunstan)
</para>
<para>
Such matches were found by GIN index searches, but not by sequential
scans or GiST index searches.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0eaaaf00e] 2016-12-11 13:09:57 -0500
Branch: REL9_6_STABLE [c8bfe055b] 2016-12-11 13:09:57 -0500
Branch: REL9_5_STABLE [c6caa5200] 2016-12-11 13:09:57 -0500
Branch: REL9_4_STABLE [6f5cb982e] 2016-12-11 13:09:57 -0500
Branch: REL9_3_STABLE [79e1a9efa] 2016-12-11 13:09:57 -0500
Branch: REL9_2_STABLE [f4ccee408] 2016-12-11 13:09:57 -0500
-->
<para>
Prevent crash when <function>ts_rewrite()</> replaces a non-top-level
subtree with an empty query (Artur Zakirov)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5ec81acee] 2016-10-30 17:35:42 -0400
Branch: REL9_6_STABLE [464326e83] 2016-10-30 17:35:42 -0400
Branch: REL9_5_STABLE [e0491c19d] 2016-10-30 17:35:42 -0400
Branch: REL9_4_STABLE [514797a52] 2016-10-30 17:35:43 -0400
Branch: REL9_3_STABLE [407d513df] 2016-10-30 17:35:43 -0400
Branch: REL9_2_STABLE [606e16a7f] 2016-10-30 17:35:43 -0400
-->
<para>
Fix performance problems in <function>ts_rewrite()</> (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [24ebc444c] 2016-10-30 15:24:40 -0400
Branch: REL9_6_STABLE [2a2b439cc] 2016-10-30 15:24:40 -0400
Branch: REL9_5_STABLE [de7387604] 2016-10-30 15:24:40 -0400
Branch: REL9_4_STABLE [f0c2ce45e] 2016-10-30 15:24:40 -0400
Branch: REL9_3_STABLE [77a22f898] 2016-10-30 15:24:40 -0400
Branch: REL9_2_STABLE [b0f8a273e] 2016-10-30 15:24:40 -0400
-->
<para>
Fix <function>ts_rewrite()</>'s handling of nested NOT operators
(Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9a00f03e4] 2016-10-30 12:27:41 -0400
Branch: REL9_6_STABLE [48a6592da] 2016-10-30 12:27:41 -0400
Branch: REL9_5_STABLE [7151e72d7] 2016-10-30 12:27:41 -0400
-->
<para>
Improve speed of user-defined aggregates that
use <function>array_append()</> as transition function (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [82f8107b9] 2017-01-05 11:33:51 -0500
Branch: REL9_6_STABLE [5b4f8f4c6] 2017-01-05 11:33:51 -0500
Branch: REL9_5_STABLE [4555a375a] 2017-01-05 11:33:51 -0500
Branch: REL9_4_STABLE [4e446563b] 2017-01-05 11:33:51 -0500
Branch: REL9_3_STABLE [ee9cb284a] 2017-01-05 11:33:51 -0500
Branch: REL9_2_STABLE [e0d59c6ef] 2017-01-05 11:33:51 -0500
-->
<para>
Fix <function>array_fill()</> to handle empty arrays properly (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [a73491e5f] 2016-12-09 12:42:17 -0300
Branch: REL9_6_STABLE [79c89f1f4] 2016-12-09 12:42:17 -0300
Branch: REL9_5_STABLE [581b09c72] 2016-12-09 12:42:17 -0300
-->
<para>
Fix possible crash in <function>array_position()</>
or <function>array_positions()</> when processing arrays of records
(Junseok Yang)
</para>
</listitem>
<listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [4f5182e18] 2016-12-16 12:53:04 +0200
Branch: REL9_6_STABLE [0fe5a4cd7] 2016-12-16 12:52:50 +0200
Branch: REL9_5_STABLE [595333ff4] 2016-12-16 12:53:12 +0200
Branch: REL9_4_STABLE [779325478] 2016-12-16 12:53:16 +0200
Branch: REL9_3_STABLE [e71fe8470] 2016-12-16 12:53:22 +0200
Branch: REL9_2_STABLE [c8f8ed5c2] 2016-12-16 12:53:27 +0200
-->
<para>
Fix one-byte buffer overrun in <function>quote_literal_cstr()</>
(Heikki Linnakangas)
</para>
<para>
The overrun occurred only if the input consisted entirely of single
quotes and/or backslashes.
</para>
</listitem>
<listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [974ece58b] 2017-01-17 17:27:32 +0900
Branch: REL9_6_STABLE [60a8b63d2] 2017-01-17 17:29:15 +0900
Branch: REL9_5_STABLE [dfe348c1b] 2017-01-17 17:30:26 +0900
Branch: REL9_4_STABLE [9e7f00d86] 2017-01-17 17:31:51 +0900
Branch: REL9_3_STABLE [f64b11fa0] 2017-01-17 17:32:20 +0900
Branch: REL9_2_STABLE [c73157ca0] 2017-01-17 17:32:45 +0900
-->
<para>
Prevent multiple calls of <function>pg_start_backup()</>
and <function>pg_stop_backup()</> from running concurrently (Michael
Paquier)
</para>
<para>
This avoids an assertion failure, and possibly worse things, if
someone tries to run these functions in parallel.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c22ecc656] 2017-01-18 15:22:07 -0500
Branch: REL9_6_STABLE [b21e665f2] 2017-01-18 15:21:52 -0500
Branch: REL9_5_STABLE [74e67bbad] 2017-01-18 15:21:52 -0500
-->
<para>
Disable transform that attempted to remove no-op <literal>AT TIME
ZONE</> conversions (Tom Lane)
</para>
<para>
This resulted in wrong answers when the simplified expression was
used in an index condition.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f0774abde] 2016-12-27 15:43:54 -0500
Branch: REL9_6_STABLE [21e24eb9a] 2016-12-27 15:43:54 -0500
Branch: REL9_5_STABLE [4efe7aa2d] 2016-12-27 15:43:54 -0500
Branch: REL9_4_STABLE [0b947b692] 2016-12-27 15:43:54 -0500
Branch: REL9_3_STABLE [583599839] 2016-12-27 15:43:54 -0500
Branch: REL9_2_STABLE [beae7d5f0] 2016-12-27 15:43:55 -0500
-->
<para>
Avoid discarding <type>interval</>-to-<type>interval</> casts
that aren't really no-ops (Tom Lane)
</para>
<para>
In some cases, a cast that should result in zeroing out
low-order <type>interval</> fields was mistakenly deemed to be a
no-op and discarded. An example is that casting from <type>INTERVAL
MONTH</> to <type>INTERVAL YEAR</> failed to clear the months field.
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [53c7cff72] 2016-12-05 15:54:28 -0500
Branch: REL9_6_STABLE [06fa6670f] 2016-12-05 15:59:02 -0500
-->
<para>
Fix crash if the number of workers available to a parallel query
decreases during a rescan (Andreas Seltenreich)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [13671b4b2] 2016-11-19 14:26:19 -0500
Branch: REL9_6_STABLE [272c42660] 2016-11-19 14:26:19 -0500
Branch: REL9_5_STABLE [b9ee42e70] 2016-11-19 14:26:20 -0500
-->
<para>
Fix bugs in transmitting GUC parameter values to parallel workers
(Michael Paquier, Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [4212cb732] 2016-12-06 11:11:54 -0500
Branch: REL9_6_STABLE [ebe5dc9e0] 2016-12-06 11:43:12 -0500
-->
<para>
Allow statements prepared with <command>PREPARE</> to be given
parallel plans (Amit Kapila, Tobias Bussman)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [41e2b84ce] 2016-11-29 19:32:35 -0500
Branch: REL9_6_STABLE [e5b8aa636] 2016-11-29 19:32:35 -0500
-->
<para>
Fix incorrect generation of parallel plans for semi-joins (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [0c2070cef] 2017-01-13 13:34:10 -0500
Branch: REL9_6_STABLE [2d443ae1b] 2017-01-13 13:36:09 -0500
-->
<para>
Fix planner's cardinality estimates for parallel joins (Robert Haas)
</para>
<para>
Ensure that these estimates reflect the number of rows predicted to
be seen by each worker, rather than the total.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ab77a5a45] 2016-11-25 16:20:12 -0500
Branch: REL9_6_STABLE [474de765a] 2016-11-25 16:20:31 -0500
Branch: master [f24cf960d] 2016-11-21 11:09:24 -0500
Branch: REL9_6_STABLE [01f08cbbc] 2016-11-21 11:09:33 -0500
-->
<para>
Fix planner to avoid trying to parallelize plan nodes containing
initplans or subplans (Tom Lane, Amit Kapila)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c52d37c8b] 2017-01-06 14:12:52 -0500
Branch: REL9_6_STABLE [4103a2f20] 2017-01-06 14:12:52 -0500
Branch: REL9_5_STABLE [aaf12e577] 2017-01-06 14:12:52 -0500
Branch: REL9_4_STABLE [e4380e4cf] 2017-01-06 14:12:52 -0500
Branch: REL9_3_STABLE [a8191800a] 2017-01-06 14:12:52 -0500
-->
<para>
Ensure that cached plans are invalidated by changes in foreign-table
options (Amit Langote, Etsuro Fujita, Ashutosh Bapat)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e1b449bea] 2016-11-10 11:31:56 -0500
Branch: REL9_6_STABLE [7defc3b97] 2016-11-10 11:31:56 -0500
-->
<para>
Fix the plan generated for sorted partial aggregation with a constant
<literal>GROUP BY</> clause (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1f542a2ea] 2016-12-13 13:20:37 -0500
Branch: REL9_6_STABLE [997a2994e] 2016-12-13 13:20:16 -0500
-->
<para>
Fix <quote>could not find plan for CTE</> planner error when dealing
with a <literal>UNION ALL</> containing CTE references (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [555494d1b] 2017-02-02 19:11:32 -0500
Branch: REL9_6_STABLE [b971a98ce] 2017-02-02 19:11:27 -0500
-->
<para>
Fix mishandling of initplans when forcibly adding a Material node to
a subplan (Tom Lane)
</para>
<para>
The typical consequence of this mistake was a <quote>plan should not
reference subplan's variable</> error.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7fa93eec4] 2016-12-17 15:28:54 -0500
Branch: REL9_6_STABLE [f4f195d15] 2016-12-17 15:28:54 -0500
Branch: master [770671062] 2016-11-02 15:50:15 -0400
Branch: REL9_6_STABLE [23c6c437f] 2016-11-02 15:50:21 -0400
-->
<para>
Fix foreign-key-based join selectivity estimation for semi-joins and
anti-joins, as well as inheritance cases (Tom Lane)
</para>
<para>
The new code for taking the existence of a foreign key relationship
into account did the wrong thing in these cases, making the estimates
worse not better than the pre-9.6 code.
</para>
</listitem>
<listitem>
<!--
Author: Stephen Frost <sfrost@snowman.net>
Branch: master [bec96c82f] 2017-01-19 12:06:21 -0500
Branch: REL9_6_STABLE [fd081cabf] 2017-01-19 12:06:27 -0500
-->
<para>
Fix <application>pg_dump</> to emit the data of a sequence that is
marked as an extension configuration table (Michael Paquier)
</para>
</listitem>
<listitem>
<!--
Author: Stephen Frost <sfrost@snowman.net>
Branch: master [e2090d9d2] 2017-01-31 16:24:11 -0500
Branch: REL9_6_STABLE [eb5e9d90d] 2017-01-31 16:24:14 -0500
-->
<para>
Fix mishandling of <command>ALTER DEFAULT PRIVILEGES ... REVOKE</>
in <application>pg_dump</> (Stephen Frost)
</para>
<para>
<application>pg_dump</> missed issuing the
required <literal>REVOKE</> commands in cases where <command>ALTER
DEFAULT PRIVILEGES</> had been used to reduce privileges to less than
they would normally be.
</para>
</listitem>
<listitem>
<!--
Author: Stephen Frost <sfrost@snowman.net>
Branch: master [2259bf672] 2016-12-21 13:47:06 -0500
Branch: REL9_6_STABLE [542975a14] 2016-12-21 13:47:13 -0500
Branch: REL9_5_STABLE [1efc5dba0] 2016-12-21 13:47:18 -0500
Branch: REL9_4_STABLE [13f51dacf] 2016-12-21 13:47:23 -0500
Branch: REL9_3_STABLE [1f2cfd26f] 2016-12-21 13:47:28 -0500
Branch: REL9_2_STABLE [da57166b7] 2016-12-21 13:47:32 -0500
Branch: master [19990918d] 2016-12-21 13:47:06 -0500
Branch: REL9_6_STABLE [e45319bb7] 2016-12-21 13:47:13 -0500
Branch: REL9_5_STABLE [94476436a] 2016-12-21 13:47:18 -0500
Branch: REL9_4_STABLE [107943f1a] 2016-12-21 13:47:23 -0500
Branch: REL9_3_STABLE [fc03f7dd1] 2016-12-21 13:47:28 -0500
Branch: REL9_2_STABLE [59a389891] 2016-12-21 13:47:32 -0500
-->
<para>
Fix <application>pg_dump</> to dump user-defined casts and transforms
that use built-in functions (Stephen Frost)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ac888986f] 2016-11-17 14:59:13 -0500
Branch: REL9_6_STABLE [0eaa5118a] 2016-11-17 14:59:19 -0500
Branch: REL9_5_STABLE [a7864037d] 2016-11-17 14:59:23 -0500
Branch: REL9_4_STABLE [e69b532be] 2016-11-17 14:59:26 -0500
-->
<para>
Fix <application>pg_restore</> with <option>--create --if-exists</>
to behave more sanely if an archive contains
unrecognized <command>DROP</> commands (Tom Lane)
</para>
<para>
This doesn't fix any live bug, but it may improve the behavior in
future if <application>pg_restore</> is used with an archive
generated by a later <application>pg_dump</> version.
</para>
</listitem>
<listitem>
<!--
Author: Magnus Hagander <magnus@hagander.net>
Branch: master [10238fad0] 2016-12-19 10:11:04 +0100
Branch: REL9_6_STABLE [1c8ad594e] 2016-12-19 10:15:52 +0100
Branch: REL9_5_STABLE [bc53d7130] 2016-12-19 10:16:02 +0100
Branch: REL9_4_STABLE [f6508827a] 2016-12-19 10:16:12 +0100
-->
<para>
Fix <application>pg_basebackup</>'s rate limiting in the presence of
slow I/O (Antonin Houska)
</para>
<para>
If disk I/O was transiently much slower than the specified rate
limit, the calculation overflowed, effectively disabling the rate
limit for the rest of the run.
</para>
</listitem>
<listitem>
<!--
Author: Magnus Hagander <magnus@hagander.net>
Branch: REL9_6_STABLE [b6a323a8c] 2016-11-07 14:47:30 +0100
Branch: REL9_5_STABLE [6d779e05a] 2016-11-07 15:03:56 +0100
Branch: REL9_4_STABLE [5556420d4] 2016-11-07 15:04:23 +0100
-->
<para>
Fix <application>pg_basebackup</>'s handling of
symlinked <filename>pg_stat_tmp</> and <filename>pg_replslot</>
subdirectories (Magnus Hagander, Michael Paquier)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [f267c1c24] 2016-10-27 11:19:51 -0400
Branch: REL9_6_STABLE [05e2293f4] 2016-10-27 11:34:28 -0400
Branch: REL9_5_STABLE [ef18cb7da] 2016-10-27 11:53:14 -0400
Branch: REL9_4_STABLE [d1e9c8269] 2016-10-27 11:59:08 -0400
Branch: REL9_3_STABLE [92929a3e3] 2016-10-27 12:00:05 -0400
Branch: REL9_2_STABLE [629575fa2] 2016-10-27 12:14:07 -0400
-->
<para>
Fix possible <application>pg_basebackup</> failure on standby
server when including WAL files (Amit Kapila, Robert Haas)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [dbdfd114f] 2016-11-25 18:36:10 -0500
Branch: REL9_6_STABLE [255bcd27f] 2016-11-25 18:36:10 -0500
-->
<para>
Improve <application>initdb</> to insert the correct
platform-specific default values for
the <replaceable>xxx</><literal>_flush_after</> parameters
into <filename>postgresql.conf</> (Fabien Coelho, Tom Lane)
</para>
<para>
This is a cleaner way of documenting the default values than was used
previously.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [cd1b21569] 2016-12-22 15:01:37 -0500
Branch: REL9_6_STABLE [77cd0dc7e] 2016-12-22 15:01:38 -0500
Branch: REL9_5_STABLE [c472f2a33] 2016-12-22 15:01:39 -0500
-->
<para>
Fix possible mishandling of expanded arrays in domain check
constraints and <literal>CASE</> execution (Tom Lane)
</para>
<para>
It was possible for a PL/pgSQL function invoked in these contexts to
modify or even delete an array value that needs to be preserved for
additional operations.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fc8b81a29] 2016-11-06 12:09:36 -0500
Branch: REL9_6_STABLE [a5b153ff5] 2016-11-06 12:09:36 -0500
Branch: REL9_5_STABLE [674877e93] 2016-11-06 12:09:36 -0500
-->
<para>
Fix nested uses of PL/pgSQL functions in contexts such as domain
check constraints evaluated during assignment to a PL/pgSQL variable
(Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9cda81f00] 2016-12-09 15:27:23 -0500
Branch: REL9_6_STABLE [b90f2247e] 2016-12-09 15:27:23 -0500
Branch: REL9_5_STABLE [00858728f] 2016-12-09 15:27:23 -0500
Branch: REL9_4_STABLE [13a4b37b9] 2016-12-09 15:27:23 -0500
Branch: REL9_3_STABLE [cea6de20b] 2016-12-09 15:27:23 -0500
Branch: REL9_2_STABLE [981885d17] 2016-12-09 15:27:23 -0500
-->
<para>
Ensure that the Python exception objects we create for PL/Python are
properly reference-counted (Rafa de la Torre, Tom Lane)
</para>
<para>
This avoids failures if the objects are used after a Python garbage
collection cycle has occurred.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fd2664dcb] 2016-11-06 14:43:13 -0500
Branch: REL9_6_STABLE [3af8467e9] 2016-11-06 14:43:13 -0500
Branch: REL9_5_STABLE [abdc83998] 2016-11-06 14:43:13 -0500
Branch: REL9_4_STABLE [110413a35] 2016-11-06 14:43:13 -0500
Branch: REL9_3_STABLE [9c0b04f18] 2016-11-06 14:43:14 -0500
Branch: REL9_2_STABLE [92b7b1058] 2016-11-06 14:43:14 -0500
-->
<para>
Fix PL/Tcl to support triggers on tables that have <literal>.tupno</>
as a column name (Tom Lane)
</para>
<para>
This matches the (previously undocumented) behavior of
PL/Tcl's <command>spi_exec</> and <command>spi_execp</> commands,
namely that a magic <literal>.tupno</> column is inserted only if
there isn't a real column named that.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0a7481930] 2016-11-15 16:17:19 -0500
Branch: REL9_6_STABLE [a69e6d9a6] 2016-11-15 16:17:19 -0500
Branch: REL9_5_STABLE [8951f92da] 2016-11-15 16:17:19 -0500
Branch: REL9_4_STABLE [e9802122d] 2016-11-15 16:17:19 -0500
Branch: REL9_3_STABLE [46b6f3fff] 2016-11-15 16:17:19 -0500
Branch: REL9_2_STABLE [13aa9af37] 2016-11-15 16:17:19 -0500
-->
<para>
Allow DOS-style line endings in <filename>~/.pgpass</> files,
even on Unix (Vik Fearing)
</para>
<para>
This change simplifies use of the same password file across Unix and
Windows machines.
</para>
</listitem>
<listitem>
<!--
Author: Michael Meskes <meskes@postgresql.org>
Branch: master [4032ef18d] 2016-12-22 08:28:13 +0100
Branch: REL9_6_STABLE [fd2a5547c] 2016-12-22 08:29:13 +0100
Branch: REL9_5_STABLE [a88c547f9] 2016-12-22 08:29:33 +0100
Branch: REL9_4_STABLE [3af172f7b] 2016-12-22 08:30:06 +0100
Branch: REL9_3_STABLE [1df8b3fe8] 2016-12-22 08:32:25 +0100
Branch: REL9_2_STABLE [501c91074] 2016-12-22 08:34:07 +0100
-->
<para>
Fix one-byte buffer overrun if <application>ecpg</> is given a file
name that ends with a dot (Takayuki Tsunakawa)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a3aef88e6] 2016-12-25 16:04:45 -0500
Branch: REL9_6_STABLE [6a8c67f50] 2016-12-25 16:04:47 -0500
-->
<para>
Fix incorrect error reporting for duplicate data
in <application>psql</>'s <command>\crosstabview</> (Tom Lane)
</para>
<para>
<application>psql</> sometimes quoted the wrong row and/or column
values when complaining about multiple entries for the same crosstab
cell.
</para>
</listitem>
<listitem>
<!--
Author: Stephen Frost <sfrost@snowman.net>
Branch: master [f3fd531a5] 2016-12-23 21:01:29 -0500
Branch: REL9_6_STABLE [dc61580bd] 2016-12-23 21:01:33 -0500
Branch: REL9_5_STABLE [16a2efdb2] 2016-12-23 21:01:40 -0500
Branch: REL9_4_STABLE [98f30a0e7] 2016-12-23 21:01:45 -0500
Branch: REL9_3_STABLE [2022d594d] 2016-12-23 21:01:48 -0500
Branch: REL9_2_STABLE [26b55d669] 2016-12-23 21:01:51 -0500
-->
<para>
Fix <application>psql</>'s tab completion for <command>ALTER DEFAULT
PRIVILEGES</> (Gilles Darold, Stephen Frost)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [404e66758] 2016-11-28 11:51:30 -0500
Branch: REL9_6_STABLE [28735cc72] 2016-11-28 11:51:35 -0500
-->
<para>
Fix <application>psql</>'s tab completion for <command>ALTER TABLE t
ALTER c DROP ...</> (Kyotaro Horiguchi)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [18f8f784c] 2016-12-07 12:19:56 -0500
Branch: REL9_6_STABLE [bb39f58f7] 2016-12-07 12:19:56 -0500
Branch: REL9_5_STABLE [370c7a863] 2016-12-07 12:19:56 -0500
Branch: REL9_4_STABLE [ccb84dae1] 2016-12-07 12:19:56 -0500
Branch: REL9_3_STABLE [82eb5c514] 2016-12-07 12:19:56 -0500
Branch: REL9_2_STABLE [1ec5cc025] 2016-12-07 12:19:57 -0500
-->
<para>
In <application>psql</>, treat an empty or all-blank setting of
the <envar>PAGER</> environment variable as meaning <quote>no
pager</> (Tom Lane)
</para>
<para>
Previously, such a setting caused output intended for the pager to
vanish entirely.
</para>
</listitem>
<listitem>
<!--
Author: Joe Conway <mail@joeconway.com>
Branch: master [2f802d95b] 2016-12-22 09:48:55 -0800
Branch: REL9_6_STABLE [51126ccdb] 2016-12-22 09:47:55 -0800
Branch: REL9_5_STABLE [80ca22aa6] 2016-12-22 09:47:46 -0800
Branch: REL9_4_STABLE [76943f54a] 2016-12-22 09:47:36 -0800
Branch: REL9_3_STABLE [9b8507bfa] 2016-12-22 09:47:25 -0800
Branch: REL9_2_STABLE [44de099f8] 2016-12-22 09:46:46 -0800
-->
<para>
Improve <filename>contrib/dblink</>'s reporting of
low-level <application>libpq</> errors, such as out-of-memory
(Joe Conway)
</para>
</listitem>
<listitem>
<!--
Author: Joe Conway <mail@joeconway.com>
Branch: master [c44486838] 2016-12-22 09:20:35 -0800
Branch: REL9_6_STABLE [150841fb9] 2016-12-22 09:19:34 -0800
Branch: REL9_5_STABLE [d5c05f27a] 2016-12-22 09:19:18 -0800
Branch: REL9_4_STABLE [cb687e0ac] 2016-12-22 09:19:08 -0800
Branch: REL9_3_STABLE [bd46cce21] 2016-12-22 09:18:50 -0800
-->
<para>
Teach <filename>contrib/dblink</> to ignore irrelevant server options
when it uses a <filename>contrib/postgres_fdw</> foreign server as
the source of connection options (Corey Huinker)
</para>
<para>
Previously, if the foreign server object had options that were not
also <application>libpq</> connection options, an error occurred.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL9_6_STABLE [4774f6183] 2016-11-04 12:37:29 -0400
Branch: REL9_5_STABLE [56d34ba5f] 2016-11-04 12:37:29 -0400
Branch: master [14ee35799] 2016-11-02 00:09:27 -0400
Branch: REL9_6_STABLE [2a8783e44] 2016-11-02 00:09:28 -0400
Branch: REL9_5_STABLE [af636d7b5] 2016-11-02 00:09:28 -0400
-->
<para>
Fix portability problems in <filename>contrib/pageinspect</>'s
functions for GIN indexes (Peter Eisentraut, Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [3b790d256] 2016-12-21 11:01:48 -0500
Branch: REL9_6_STABLE [b98e5513f] 2016-12-21 11:11:36 -0500
-->
<para>
Fix possible miss of socket read events while waiting on Windows
(Amit Kapial)
</para>
<para>
This error was harmless for most uses, but it is known to cause hangs
when trying to use the pldebugger extension.
</para>
</listitem>
<listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [95b9b8a39] 2016-12-03 15:46:36 -0500
Branch: REL9_6_STABLE [784054579] 2016-12-03 15:46:42 -0500
Branch: REL9_5_STABLE [5ab4b2ec4] 2016-12-03 15:46:48 -0500
Branch: REL9_4_STABLE [b45a4949d] 2016-12-03 15:47:18 -0500
Branch: REL9_3_STABLE [6c5d5918b] 2016-12-03 15:47:31 -0500
Branch: REL9_2_STABLE [d83c94292] 2016-12-03 15:47:52 -0500
Branch: master [b37da1e8a] 2016-12-03 15:46:35 -0500
Branch: REL9_6_STABLE [056d62c5e] 2016-12-03 15:46:42 -0500
Branch: REL9_5_STABLE [3cb8bdfef] 2016-12-03 15:46:48 -0500
Branch: REL9_4_STABLE [ec7eacfae] 2016-12-03 15:47:12 -0500
Branch: REL9_3_STABLE [4c3505eb4] 2016-12-03 15:47:31 -0500
Branch: REL9_2_STABLE [a9265258a] 2016-12-03 15:47:49 -0500
-->
<para>
On Windows, ensure that environment variable changes are propagated
to DLLs built with debug options (Christian Ullrich)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [93513d1b6] 2016-12-15 14:32:42 -0500
Branch: REL9_6_STABLE [6f4d38dbe] 2016-12-15 14:32:58 -0500
Branch: REL9_5_STABLE [492fe48f0] 2016-12-15 14:33:06 -0500
Branch: REL9_4_STABLE [b95f4bf07] 2016-12-15 14:33:10 -0500
Branch: REL9_3_STABLE [ccf24539b] 2016-12-15 14:33:14 -0500
Branch: REL9_2_STABLE [2b7d715c0] 2016-12-15 14:33:19 -0500
Branch: master [32416b0f9] 2016-11-06 10:45:58 -0500
Branch: REL9_6_STABLE [20559a854] 2016-11-06 10:46:08 -0500
Branch: REL9_5_STABLE [6e377ef0c] 2016-11-06 10:46:14 -0500
Branch: REL9_4_STABLE [6651ab058] 2016-11-06 10:46:21 -0500
Branch: REL9_3_STABLE [3a8f24abd] 2016-11-06 10:46:27 -0500
Branch: REL9_2_STABLE [6653dbafd] 2016-11-06 10:46:34 -0500
Branch: master [1f87181e1] 2016-11-03 22:24:34 -0400
Branch: REL9_6_STABLE [7afafe8af] 2016-11-04 10:44:16 -0400
Branch: REL9_5_STABLE [ac6fc1b55] 2016-11-04 10:44:16 -0400
Branch: REL9_4_STABLE [c09478e15] 2016-11-04 10:44:16 -0400
Branch: REL9_3_STABLE [22b1207a3] 2016-11-04 10:44:16 -0400
Branch: REL9_2_STABLE [07bc2fc45] 2016-11-04 10:44:16 -0400
-->
<para>
Sync our copy of the timezone library with IANA release tzcode2016j
(Tom Lane)
</para>
<para>
This fixes various issues, most notably that timezone data
installation failed if the target directory didn't support hard
links.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [308d86827] 2017-01-30 11:40:22 -0500
Branch: REL9_6_STABLE [6da67b684] 2017-01-30 11:40:39 -0500
Branch: REL9_5_STABLE [4c729f471] 2017-01-30 11:40:46 -0500
Branch: REL9_4_STABLE [a7b5de3ba] 2017-01-30 11:40:54 -0500
Branch: REL9_3_STABLE [2b133be04] 2017-01-30 11:41:02 -0500
Branch: REL9_2_STABLE [ef878cc2c] 2017-01-30 11:41:09 -0500
-->
<para>
Update time zone data files to <application>tzdata</> release 2016j
for DST law changes in northern Cyprus (adding a new zone
Asia/Famagusta), Russia (adding a new zone Europe/Saratov), Tonga,
and Antarctica/Casey.
Historical corrections for Italy, Kazakhstan, Malta, and Palestine.
Switch to preferring numeric zone abbreviations for Tonga.
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-9-6-1">
<title>Release 9.6.1</title>
......
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