<formalpara>
<title>Release date:</title>
- <para>2019-??-?? AS OF 2019-05-09</para>
+ <para>2019-??-??, CURRENT AS OF 2019-09-06</para>
</formalpara>
<sect2>
<itemizedlist>
<listitem>
- <para>big item</para>
+ <para>
+ General performance improvements, including:
+ <itemizedlist>
+ <listitem>
+ <para>
+ Optimizations to space utilization and read/write performance for
+ B-tree indexes
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Partitioning performance enhancements, including improved query
+ performance on tables with thousands of partitions, improved
+ insertion performance with <xref linkend="sql-insert"/> and
+ <xref linkend="sql-copy"/>, and the ability to
+ execute <link linkend="sql-altertable"><command>ALTER TABLE ATTACH
+ PARTITION</command></link> without blocking queries
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Automatic (but overridable) inlining
+ of <link linkend="queries-with">common table expressions</link>
+ (<acronym>CTEs</acronym>)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduction of <acronym>WAL</acronym> overhead for updates of
+ <link linkend="gist">GiST</link>, <link linkend="gin">GIN</link>, and
+ <link linkend="spgist">SP-GiST</link> indexes
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support for covering <link linkend="gist">GiST</link> indexes, via
+ the <link linkend="sql-createindex"> <literal>INCLUDE</literal></link>
+ clause
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Multi-column most-common-value (MCV) statistics can be defined
+ via <xref linkend="sql-createstatistics"/>, to support better
+ plans for queries that test several non-uniformly-distributed
+ columns
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Enhancements to administrative functionality, including:
+ <itemizedlist>
+ <listitem>
+ <para>
+ <link linkend="sql-reindex"><command>REINDEX
+ CONCURRENTLY</command></link> can rebuild an index without
+ blocking writes to its table
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <xref linkend="app-pgchecksums"/> can enable/disable page checksums
+ (used for detecting data corruption) in an offline cluster
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Progress reporting statistics for <xref linkend="sql-createindex"/>,
+ <xref linkend="sql-reindex"/>, <xref linkend="sql-cluster"/>,
+ <link linkend="sql-vacuum">VACUUM FULL</link>, and
+ <xref linkend="app-pgchecksums"/>
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support for the <acronym>SQL/JSON</acronym>
+ <link linkend="functions-json-processing-table">path</link> language
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Stored <link linkend="sql-createtable">generated columns</link>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Nondeterministic ICU
+ <link linkend="sql-createcollation">collations</link>, enabling
+ case-insensitive and accent-insensitive grouping and ordering
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ New authentication features, including:
+ <itemizedlist>
+ <listitem>
+ <para>
+ Client- and server-side encryption for authentication using
+ <link linkend="gssapi-auth"><acronym>GSSAPI</acronym></link>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Discovery of LDAP servers if <productname>PostgreSQL</productname> is
+ built with <productname>OpenLDAP</productname>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Multi-factor authentication, using the <link linkend="auth-cert">
+ <literal>clientcert=verify-full</literal></link> option combined
+ with an additional authentication method in
+ <filename>pg_hba.conf</filename>
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
</listitem>
</itemizedlist>
<listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
-2018-08-16 [c4c340088] Use the built-in float datatypes to implement geometric
+2018-08-16 [c4c340088] Use the built-in float datatypes to implement geometric
-->
<para>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
+2019-05-14 [7c850320d] Fix SQL-style substring() to have spec-compliant greedin
+-->
+
+ <para>
+ Change SQL-style <function>substring()</function> to have
+ standard-compliant greediness behavior (Tom Lane)
+ </para>
+
+ <para>
+ In cases where the pattern can be matched in more than one way, the
+ initial sub-pattern is now treated as matching the least possible
+ amount of text rather than the greatest; for example, a pattern such
+ as <literal>%#"aa*#"%</literal> now selects the first group
+ of <literal>a</literal>'s from the input, not the last group.
+ </para>
+ </listitem>
+
+ <listitem>
+<!--
+Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-04-23 [c06e3550d] Don't request pretty-printed output from xmlNodeDump().
-->
-->
<para>
- The maximum btree index length is now reduced by eight bytes;
- a <xref linkend="sql-reindex"/> operation could potentially fail.
+ The maximum btree index entry length is now reduced by eight bytes;
+ thus a <xref linkend="sql-reindex"/> operation could potentially fail.
</para>
</listitem>
<listitem>
<!--
+Author: Tomas Vondra <tomas.vondra@postgresql.org>
+2019-06-16 [6cbfb784c] Rework the pg_statistic_ext catalog
+2019-06-16 [aa087ec64] Add pg_stats_ext view for extended statistics
+-->
+
+ <para>
+ Split the <structname>pg_statistic_ext</structname> catalog into two
+ catalogs, and add the <structname>pg_stats_ext</structname> view of
+ it (Dean Rasheed, Tomas Vondra)
+ </para>
+
+ <para>
+ This change supports hiding potentially-sensitive statistics data
+ from unprivileged users.
+ </para>
+ </listitem>
+
+ <listitem>
+<!--
Author: Peter Eisentraut <peter_e@gmx.net>
2018-11-01 [96b00c433] Remove obsolete <structname>pg_constraint</structname>.consrc column
-->
Author: Robert Haas <rhaas@postgresql.org>
2019-02-21 [9eefba181] Delay lock acquisition for partitions until we route a t
Author: Tom Lane <tgl@sss.pgh.pa.us>
-2019-03-30 [428b260f8] Speed up planning when partitions can be pruned at plan
+2019-03-30 [428b260f8] Speed up planning when partitions can be pruned at plan
-->
<para>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
-2019-04-05 [959d00e9d] Use Append rather than MergeAppend for scanning ordered
+2019-04-05 [959d00e9d] Use Append rather than MergeAppend for scanning ordered
-->
<para>
<listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
-2018-07-28 [d2086b08b] Reduce path length for locking leaf B-tree pages during
+2018-07-28 [d2086b08b] Reduce path length for locking leaf B-tree pages during
-->
<para>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
-2019-03-03 [80b9e9c46] Improve performance of index-only scans with many index
+2019-03-03 [80b9e9c46] Improve performance of index-only scans with many index
-->
<para>
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-02-16 [608b167f9] Allow user control of CTE materialization, and change th
Author: Tom Lane <tgl@sss.pgh.pa.us>
-2019-04-09 [947613127] Prevent inlining of multiply-referenced CTEs with outer
+2019-04-09 [947613127] Prevent inlining of multiply-referenced CTEs with outer
-->
<para>
</para>
<para>
- This allows case and accent-agnostic equality comparisons using
- "nondeterministic" collations. This is only supported for
- <acronym>ICU</acronym> collations. MENTION ITS AFFECT ON ORDERING?
+ This feature supports <quote>nondeterministic</quote> collations
+ that can define case- and accent-agnostic equality comparisons.
+ Thus, for example, a case-insensitive uniqueness constraint on a
+ text column can be made more easily than before. This is only
+ supported for <acronym>ICU</acronym> collations.
</para>
</listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
2019-04-04 [a96c41fee] Allow VACUUM to be run with index cleanup disabled.
+Author: Michael Paquier <michael@paquier.xyz>
+2019-06-25 [ce59b75d4] Add toast-level reloption for vacuum_index_cleanup
-->
<para>
<listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
-2019-03-19 [590a87025] Ignore attempts to add TOAST table to shared or catalog
+2019-03-19 [590a87025] Ignore attempts to add TOAST table to shared or catalog
-->
<para>
<listitem>
<!--
+Author: Michael Meskes <meskes@postgresql.org>
+2019-05-22 [a1dc6ab46] Implement PREPARE AS statement for ECPG.
+-->
+
+ <para>
+ Add <command>PREPARE AS</command> support to
+ <productname>ECPG</productname> (Matsumura Ryo)
+ </para>
+ </listitem>
+
+ <listitem>
+<!--
Author: Michael Paquier <michael@paquier.xyz>
2019-04-06 [249d64999] Add support TCP user timeout in libpq and the backend se
-->
</para>
<para>
- This is enabled with by setting environment variable
- <envar>PG_COLORS</envar>. EXAMPLE?
+ This is enabled by setting the environment variable
+ <envar>PG_COLOR</envar> to <literal>always</literal>
+ or <literal>auto</literal>. The specific colors used can be
+ adjusted by setting the environment variable
+ <envar>PG_COLORS</envar>, using ANSI escape codes for colors.
+ For example, the default behavior is equivalent to
+ <literal>PG_COLORS="error=01;31:warning=01;35:locus=01"</literal>
</para>
</listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2018-11-19 [6e5f8d489] psql: Show IP address in \conninfo
+2019-06-14 [313f56ce2] Tweak libpq's PQhost, PQhostaddr, and psql's \connect
-->
<para>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-03-07 [7e413a0f8] pg_dump: allow multiple rows per insert
+2019-06-14 [a193cbec1] Add pg_dumpall rows-per-insert
-->
<para>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
-2018-09-26 [26e9d4d4e] Convert elog.c's useful_strerror() into a globally-used
+2018-09-26 [26e9d4d4e] Convert elog.c's useful_strerror() into a globally-used
-->
<para>
<listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
-2018-07-08 [a45adc747] Fix WITH CHECK OPTION on views referencing postgres_fdw
+2018-07-08 [a45adc747] Fix WITH CHECK OPTION on views referencing postgres_fdw
-->
<para>
projects / postgresql / commitdiff