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2765 lines
67 KiB
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2765 lines
67 KiB
Plaintext
<!-- $PostgreSQL: pgsql/doc/src/sgml/release-9.0.sgml,v 2.20 2010/05/13 01:57:01 momjian Exp $ -->
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<sect1 id="release-9-0">
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<title>Release 9.0</title>
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<note>
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<title>Release date</title>
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<simpara>2010-??-??</simpara>
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</note>
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<!-- beta2 notes
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recovery_connections -> hot_standby
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-->
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<sect2>
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<title>Overview</title>
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<para>
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Based on overwhelming user demand, this release of
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<productname>PostgreSQL</> adds features that have been requested
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for years, like easy-to-use replication, a mass permission
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facility, and anonymous blocks. While past major releases have
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been quite conservative in their scope, this release shows a
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bold new desire to provide facilities that every new and existing
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user of <productname>PostgreSQL</> will embrace. This has all
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been done with few incompatibilities. The major areas of
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enhancement are:
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</para>
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<itemizedlist>
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<!-- This list duplicates items below, but without authors or details-->
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<listitem>
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<para>
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Allow continuous archive standby systems to accept read-only queries
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</para>
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</listitem>
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<listitem>
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<para>
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Allow continuous archive (<acronym>WAL</>) files to be streamed to a
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standby system
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</para>
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</listitem>
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<listitem>
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<para>
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Add the ability to make mass permission changes per
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schema using the new <link
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linkend="SQL-GRANT"><command>GRANT</>/<command>REVOKE
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IN SCHEMA</></link> clause
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</para>
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</listitem>
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<listitem>
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<para>
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Add the ability to control large object permissions with
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<command>GRANT</>/<command>REVOKE</>
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</para>
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</listitem>
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<listitem>
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<para>
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Implement anonymous functions using the <link
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linkend="SQL-DO"><command>DO</></link> statement
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</para>
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</listitem>
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<listitem>
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<para>
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Allow function calls to supply parameter names and match them to named
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parameters in the function definition (Pavel Stehule)
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</para>
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</listitem>
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<listitem>
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<para>
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Install server-side language PL/pgSQL by default
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</para>
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</listitem>
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<listitem>
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<para>
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Major PL/Perl enhancements
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</para>
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</listitem>
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<listitem>
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<para>
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Allow SQL-compliant <link
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linkend="SQL-CREATETRIGGER">per-column triggers</link>
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</para>
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</listitem>
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<listitem>
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<para>
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Add <link linkend="SQL-CREATETABLE-compatibility">deferrable
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unique constraints</link>
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</para>
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</listitem>
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<listitem>
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<para>
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Have <link linkend="SQL-LISTEN"><command>LISTEN</></link>/<link
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linkend="SQL-NOTIFY"><command>NOTIFY</></link> store events
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in a memory queue, rather than a system table
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</para>
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</listitem>
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<listitem>
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<para>
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Allow <link linkend="SQL-NOTIFY"><command>NOTIFY</></link>
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to pass an optional string to listeners
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</para>
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</listitem>
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<listitem>
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<para>
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Change <command>VACUUM FULL</> to rewrite the entire table and
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indexes, rather than moving around single rows to compact space
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</para>
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</listitem>
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<listitem>
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<para>
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Add prefix support for the full text search synonym dictionary
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</para>
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</listitem>
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<listitem>
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<para>
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Use red-black trees for <acronym>GIN</> index creation
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</para>
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</listitem>
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<listitem>
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<para>
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Add <link
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linkend="functions-binarystring-other"><function>get_bit()</></link>
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and <function>set_bit()</> functions for <type>bit</>
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strings, mirroring those for <type>bytea</>
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</para>
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</listitem>
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<listitem>
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<para>
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Add the ability for clients to set an <link
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linkend="libpq-connect-application-name">application
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name</link>, which is displayed in
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<structname>pg_stat_activity</>
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</para>
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</listitem>
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<listitem>
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<para>
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Add support for compiling on <link
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linkend="install-win32-full">64-bit
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<productname>Windows</></link> and running in 64-bit
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mode
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</para>
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</listitem>
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<listitem>
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<para>
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Add <link linkend="pgupgrade"><filename>/contrib/pg_upgrade</></>
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to support in-place upgrades
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</para>
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</listitem>
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</itemizedlist>
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<para>
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The above items are explained in more detail in the sections below.
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</para>
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</sect2>
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<sect2>
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<title>Migration to Version 9.0</title>
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<para>CURRENT AS OF 2010-05-12</para>
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<para>
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A dump/restore using <application>pg_dump</application> is
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required for those wishing to migrate data from any previous
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release.
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</para>
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<para>
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Observe the following incompatibilities:
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</para>
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<sect3>
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<title>Server Settings</title>
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<itemizedlist>
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<listitem>
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<para>
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Remove server variable <varname>add_missing_from</>, which was
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defaulted to off for many years (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Remove server variable <varname>regex_flavor</>, which
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was defaulted to <link
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linkend="posix-syntax-details"><literal>advanced</></link>
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(e.g. Perl-regex compatible) for many years (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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It is now necessary to set <link
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linkend="guc-wal-level"><varname>wal_level</></link> to
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<literal>archive</> to do continuous archiving.
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(Heikki Linnakangas)
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</para>
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</listitem>
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</itemizedlist>
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</sect3>
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<sect3>
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<title>Queries</title>
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<itemizedlist>
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<listitem>
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<para>
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When querying a <link linkend="ddl-inherit">parent table</link>,
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do not do additional permission checks on child tables
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returned as part of the query (Peter Eisentraut)
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</para>
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<para>
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The SQL standard specifies this behavior.
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</para>
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</listitem>
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<listitem>
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<para>
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Have fractional seconds conversion truncate rather than
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round when using float-based dates/times (Tom Lane)
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</para>
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</listitem>
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</itemizedlist>
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</sect3>
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<sect3>
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<title>String Handling</title>
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<itemizedlist>
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<listitem>
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<para>
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Improve standards compliance of <link
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linkend="functions-similarto-regexp"><literal>SIMILAR TO</></link>
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patterns and SQL-style <function>substring()</> patterns (Tom Lane)
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</para>
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<para>
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This includes treating <literal>?</> and <literal>{...}</> as
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pattern metacharacters, while they were simple literal characters
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before; that corresponds to new features added in SQL:2008.
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Also, <literal>^</> and <literal>$</> are now treated as simple
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literal characters; formerly they were treated as metacharacters,
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as if the pattern were following POSIX rather than SQL rules.
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Also, in SQL-standard <function>substring()</>, use of parentheses
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for nesting no longer interferes with capturing of a substring.
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Also, processing of bracket expressions (character classes) is
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now more standards-compliant.
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</para>
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</listitem>
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<listitem>
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<para>
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Reject negative length values in 3-parameter <link
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linkend="functions-string-sql"><function>substring()</></link>
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for bit strings, per the SQL standard (Tom Lane)
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</para>
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</listitem>
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</itemizedlist>
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</sect3>
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<sect3>
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<title>Object Renaming</title>
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<itemizedlist>
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<listitem>
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<para>
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Tighten enforcement of column renaming when a child table inherits
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the renamed column from an unrelated parent (KaiGai Kohei)
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</para>
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</listitem>
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<listitem>
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<para>
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No longer rename index names and index column names when table
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columns are renamed (Tom Lane)
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</para>
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<para>
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Administrators still can rename such columns manually. Expression
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index names are also not renamed. WHY ARE EXPRESSION INDEXES
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SIGNIFICANT?
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</para>
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</listitem>
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</itemizedlist>
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</sect3>
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<sect3>
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<title>PL/pgSQL Variables</title>
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<itemizedlist>
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<listitem>
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<para>
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Have PL/pgSQL throw an error if a variable name conflicts with a
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column name used in a query (Tom Lane)
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</para>
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<para>
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This behavior can be changed via the server variable <link
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linkend="plpgsql-var-subst"><varname>plpgsql.variable_conflict</></link>,
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or by the per-function option <literal>#variable_conflict</>.
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The former behavior was to bind to variable names over
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column names.
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</para>
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</listitem>
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<listitem>
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<para>
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Remove PL/pgSQL's <literal>RENAME</> declaration option (Tom Lane)
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</para>
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<para>
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Instead, use <link
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linkend="plpgsql-declaration-parameters"><literal>ALIAS</></link>,
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which can now alias any variable, not just dollar sign
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variables, e.g. <literal>$1</>.
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</para>
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</listitem>
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<listitem>
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<para>
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PL/pgSQL no longer allows unquoted variables names that match SQL
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reserved words (Tom Lane)
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</para>
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<para>
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Variables can be double-quoted to avoid this restriction.
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</para>
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</listitem>
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</itemizedlist>
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</sect3>
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</sect2>
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<sect2>
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<title>Changes</title>
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<sect3>
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<title>Server</title>
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<sect4>
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<title>Continuous Archiving</title>
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<itemizedlist>
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<listitem>
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<para>
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Allow continuous archive standby systems to accept read-only queries
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(Simon Riggs, Heikki Linnakangas)
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</para>
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<para>
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This feature is called Hot Standby. There are new
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<filename>postgresql.conf</> and <filename>recovery.conf</>
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settings to enable this feature, as well as extensive
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<link linkend="hot-standby">documentation</link>.
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</para>
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</listitem>
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<listitem>
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<para>
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Allow continuous archive (<acronym>WAL</>) files to be streamed to a
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standby system (Fujii Masao, Heikki Linnakangas)
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</para>
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<para>
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Previously <acronym>WAL</> files could be sent to standby systems only
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as 16 megabytes files; this allows master changes to be sent to the
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slave with very little delay. There are new <filename>postgresql.conf</>
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and <filename>recovery.conf</> settings to enable this
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feature, as well as extensive <link
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linkend="streaming-replication">documentation</link>.
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</para>
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</listitem>
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<listitem>
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<para>
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Add <link
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linkend="functions-recovery-info-table"><function>pg_last_xlog_receive_location()</></link>
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and <function>pg_last_xlog_replay_location()</>, which
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can be used to monitor standby server <acronym>WAL</>
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activity (Simon Riggs, Fujii Masao, Heikki Linnakangas)
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</para>
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</listitem>
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</itemizedlist>
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</sect4>
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<sect4>
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<title>Performance</title>
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<itemizedlist>
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<listitem>
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<para>
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Improve performance of finding inherited child tables (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Allow per-tablespace sequential and random page cost variables
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(<varname>seq_page_cost</>/<varname>random_page_cost</>) via
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<link linkend="SQL-ALTERTABLESPACE"><command>ALTER TABLESPACE
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... SET/RESET</></link> (Robert Haas)
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</para>
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</listitem>
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<listitem>
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<para>
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Improve performance of <link
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linkend="SQL-TRUNCATE"><command>TRUNCATE</></link> when
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used in the same transaction as table creation (Tom Lane)
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</para>
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</listitem>
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</itemizedlist>
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</sect4>
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<sect4>
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<title>Optimizer</title>
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<itemizedlist>
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<listitem>
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<para>
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Allow <literal>IS NOT NULL</> restrictions to use indexes (Tom Lane)
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</para>
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<para>
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This is particularly useful for finding
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<function>MAX()</>/<function>MIN()</> values in indexes that also
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contain NULLs.
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</para>
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</listitem>
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<listitem>
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<para>
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Remove unnecessary <link linkend="queries-join">outer
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joins</link> (Robert Haas)
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</para>
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<para>
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Outer joins where the inner side is unique and not referenced in
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the query are unnecessary and are therefore now removed.
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</para>
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</listitem>
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<listitem>
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<para>
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Improve optimizer equivalence detection of <> <type>boolean</>
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tests (Tom Lane)
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</para>
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</listitem>
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</itemizedlist>
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</sect4>
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<sect4>
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<title><link linkend="geqo">GEQO</link></title>
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<itemizedlist>
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<listitem>
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<para>
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Use the same random seed everytime GEQO plans a query (Andres
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Freund)
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</para>
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<para>
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While the Genetic Query Optimizer (GEQO) still selects
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random plans, it now selects the same random plans for
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identical queries. You can modify <link
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linkend="guc-geqo-seed">geqo_seed</link> to randomize
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the starting value of the random plan generator.
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</para>
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</listitem>
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<listitem>
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<para>
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Improve GEQO plan selection (Tom Lane).
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</para>
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<para>
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This avoids the rare error, "failed to make a valid plan".
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</para>
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</listitem>
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</itemizedlist>
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</sect4>
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<sect4>
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<title>Optimizer Statistics</title>
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<itemizedlist>
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<listitem>
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<para>
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Improve <link linkend="SQL-ANALYZE"><command>ANALYZE</></link>
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to support inheritance-tree statistics (Tom Lane)
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</para>
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<para>
|
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This is particularly useful for partitioned tables.
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</para>
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</listitem>
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<listitem>
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<para>
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Improve <link linkend="routine-vacuuming">autovacuum</link>
|
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detection of when re-analyze is necessary (Tom Lane)
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</para>
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</listitem>
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<listitem>
|
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<para>
|
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Improve optimizer statistics for greater/less-than comparisons
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(Tom Lane)
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</para>
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<para>
|
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When looking up optimizer statistics for greater/less-than comparisons,
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if the comparison value is in the first or last histogram bucket,
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use an index to generate the actual statistics. This is particularly
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useful for columns that are always increasing, and hence often have
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inaccurate statistics.
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</para>
|
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</listitem>
|
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<listitem>
|
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<para>
|
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Allow setting of distinct statistics using <link
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linkend="SQL-ALTERTABLE"><command>ALTER TABLE</></link>
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(Robert Haas)
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</para>
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<para>
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This allows user-override of the number or percentage of distinct
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values for a column and optionally its child tables. This value
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is normally computed by <command>ANALYZE</>.
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</para>
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</listitem>
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</itemizedlist>
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|
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</sect4>
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<sect4>
|
|
<title>Authentication</title>
|
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<itemizedlist>
|
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|
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<listitem>
|
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<para>
|
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Add support for <link
|
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linkend="auth-radius"><acronym>RADIUS</></link> (Remote
|
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Authentication Dial In User Service) authentication
|
|
(Magnus Hagander)
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|
</para>
|
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</listitem>
|
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|
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|
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<listitem>
|
|
<para>
|
|
Allow <link linkend="auth-ldap"><acronym>LDAP</></link>
|
|
(Lightweight Directory Access Protocol) authentication
|
|
to operate in "search/bind" mode (Robert Fleming, Magnus)
|
|
</para>
|
|
|
|
<para>
|
|
This allows the user to be looked up first, then the system uses
|
|
the <acronym>DN</> (Distinguished Name) returned for that user.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="auth-pg-hba-conf"><literal>samehost</></link>
|
|
and <literal>samenet</> designations to
|
|
<filename>pg_hba.conf</> (Stef Walter)
|
|
</para>
|
|
|
|
<para>
|
|
These match the server's <acronym>IP</> address and network address
|
|
respectively.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Monitoring</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the ability for clients to set an <link
|
|
linkend="libpq-connect-application-name">application
|
|
name</link>, which is displayed in
|
|
<structname>pg_stat_activity</> (Dave Page)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add an SQL state option (<literal>%e</>) to <link
|
|
linkend="guc-log-line-prefix"><varname>log_line_prefix</></link>
|
|
(Guillaume Smet)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Write to the Windows event log in <acronym>UTF16</> encoding
|
|
(Itagaki Takahiro)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Statistics Counters</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="monitoring-stats-funcs-table"><function>pg_stat_reset_shared('bgwriter')</></link>
|
|
to reset the cluster-wide shared statistics of the
|
|
bgwriter (Greg Smith)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="monitoring-stats-funcs-table"><function>pg_stat_reset_single_table_counters()</></link>
|
|
and <function>pg_stat_reset_single_function_counters()</>
|
|
to allow the reseting of statistics counters for individual
|
|
tables and indexes (Magnus Hagander)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Server Settings</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow setting of configuration variables based on <link
|
|
linkend="sql-alterrole">database/role</link>
|
|
combinations (Alvaro Herrera)
|
|
</para>
|
|
|
|
<para>
|
|
Previously only per-database and per-role setting were possible,
|
|
not combinations. All role and database settings are now stored
|
|
in the new <structname>pg_db_role_setting</> system table. A new
|
|
<application>psql</> <literal>\drds</> command shows these settings.
|
|
Backwards-compatible system views do not show this information.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add boolean variable <link
|
|
linkend="guc-bonjour"><varname>bonjour</></link>, which
|
|
controls whether a Bonjour-enabled binary advertises
|
|
itself via <productname>Bonjour</> (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
The default is off, meaning it does not advertise.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add boolean variable <link
|
|
linkend="guc-enable-material"><varname>enable_material</></link>, which
|
|
controls the use of materialize nodes in the optimizer
|
|
(Robert Haas)
|
|
</para>
|
|
|
|
<para>
|
|
The default is on.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Log changed parameter values when <filename>postgresql.conf</> is
|
|
reloaded (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add proper permissions for custom variables (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Custom variables can now only be created by super-users,
|
|
but can be modified by ordinary users if variable
|
|
permissions allow it. This makes custom variables
|
|
appropriate for security settings. Previously, any user
|
|
could create or modify custom variables.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Queries</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Do <link linkend="SQL-FOR-UPDATE-SHARE"><command>SELECT
|
|
FOR UPDATE</>/<literal>SHARE</></link> processing after
|
|
applying <literal>LIMIT</>, so the number of rows returned
|
|
is always predictable (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Previously, concurrent transactions could potentially cause
|
|
<command>SELECT</> to return fewer rows than specified by
|
|
<literal>LIMIT</>. <literal>FOR UPDATE</> can still affect
|
|
<literal>ORDER BY</> ordering, but this can be corrected by using
|
|
<literal>FOR UPDATE</> in a subquery.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow mixing of traditional and SQL-standard <link
|
|
linkend="SQL-LIMIT"><literal>LIMIT</>/<literal>OFFSET</></link>
|
|
syntax in the same query (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Increase the supported frame options in <link
|
|
linkend="SQL-WINDOW">window functions</link> (Hitoshi
|
|
Harada)
|
|
</para>
|
|
|
|
<para>
|
|
This allows frames (<literal>RANGE</> or <literal>ROWS</>) to start
|
|
with <literal>CURRENT ROW</>, and to use the <literal>ROWS n
|
|
PRECEDING</>/<literal>FOLLOWING</> clause.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <command>SELECT</> and <command>CREATE TABLE AS</> return
|
|
row counts to the client
|
|
(Boszormenyi Zoltan)
|
|
</para>
|
|
|
|
<para>
|
|
<application>psql</> does not display these counts.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title>Unicode Strings</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add Unicode surrogate pair (dual 16-bit) support to
|
|
<link
|
|
linkend="sql-syntax-strings-uescape"><literal>U&</></link>
|
|
strings and identifiers (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow Unicode escapes in <link
|
|
linkend="sql-syntax-strings-escape"><literal>E'...'</></link>
|
|
strings (Marko Kreen)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Object Manipulation</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Speed up <link linkend="SQL-CREATEDATABASE"><command>CREATE
|
|
DATABASE</></link> by deferring flushes to disk (Andres
|
|
Freund, Greg Stark)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <link linkend="SQL-COMMENT">comments</link> only on
|
|
columns of tables, views, and composite types, not other
|
|
objects like indexes and <acronym>TOAST</> tables (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow the creation of <link
|
|
linkend="SQL-CREATETYPE-enum">enumerate types</link> with
|
|
no labels (Bruce Momjian)
|
|
</para>
|
|
|
|
<para>
|
|
This is useful for supporting binary upgrades.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have columns defined with storage type <literal>MAIN</> remain on
|
|
the main heap page unless it cannot fit (Kevin Grittner)
|
|
</para>
|
|
|
|
<para>
|
|
Previously <literal>MAIN</> values were forced to <acronym>TOAST</>
|
|
tables until the row size was one-quarter of the page size.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title><command>ALTER</></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link linkend="SQL-ALTERDEFAULTPRIVILEGES"><command>ALTER
|
|
DEFAULT PRIVILEGES</></link> command to control privileges
|
|
of all newly-created objects (Petr Jelinek)
|
|
</para>
|
|
|
|
<para>
|
|
It currently supports tables, views, sequences, and functions, and
|
|
also has per-schema control.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Implement <literal>IF EXISTS</> for <literal>DROP COLUMN</> and
|
|
<literal>DROP CONSTRAINT </> (Andres Freund)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <command>ALTER TABLE</> commands which rewrite tables to skip
|
|
<acronym>WAL</> logging (Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
Such operations either complete fully or are rolled back, so
|
|
<acronym>WAL</> archiving can be skipped, unless running in continuous
|
|
archiving mode.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="SQL-CREATETABLE"><command>CREATE TABLE</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add support for copying <literal>COMMENTS</> and <literal>STORAGE</>
|
|
to the <command>CREATE TABLE ... LIKE INCLUDING</> command (Itagaki
|
|
Takahiro)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add support for copying all attributes to the <command>CREATE
|
|
TABLE LIKE INCLUDING</> command (Itagaki Takahiro)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the SQL-standard <command>CREATE TABLE ... OF type</> command
|
|
(Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
This allows the creation of a table to match an existing composite
|
|
type. Additional constraints and defaults can be specified in the
|
|
command.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Constraints</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link linkend="SQL-CREATETABLE-compatibility">deferrable
|
|
unique constraints</link> (Dean Rasheed)
|
|
</para>
|
|
|
|
<para>
|
|
This allows <command>UPDATE tab SET col = col + 1</> to work on
|
|
columns that have a unique indexes or are marked as primary keys,
|
|
but <literal>DEFERRABLE INITIALLY DEFERRED</> must be used to mark
|
|
the constraint as deferred.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Generalize uniqueness constraints by allowing arbitrary operator
|
|
comparisons, not just equality (Jeff Davis)
|
|
</para>
|
|
|
|
<para>
|
|
This is enabled with the <link
|
|
linkend="SQL-CREATETABLE-EXCLUDE"><command>CREATE
|
|
TABLE CONSTRAINT ... EXCLUDE</></link> clause. While
|
|
uniqueness checks could be specified using this syntax,
|
|
the real value of this feature is in using complex
|
|
operators that do not have built-in constraints.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve the constraint violation error message to report the values
|
|
causing the failure (Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
For example, a uniqueness constraint violation now reports <literal>Key
|
|
(x)=(2) already exists</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Object Permissions</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the ability to make mass permission changes per
|
|
schema using the new <link
|
|
linkend="SQL-GRANT"><command>GRANT</>/<command>REVOKE
|
|
IN SCHEMA</></link> clause (Petr Jelinek)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the ability to control large object permissions with
|
|
<command>GRANT</>/<command>REVOKE</> (KaiGai Kohei)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Utility Operations</title>
|
|
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <link linkend="SQL-LISTEN"><command>LISTEN</></link>/<link
|
|
linkend="SQL-NOTIFY"><command>NOTIFY</></link> store events
|
|
in a memory queue, rather than a system table (Joachim
|
|
Wieland)
|
|
</para>
|
|
|
|
<para>
|
|
This greatly improves performance for these operations.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <link linkend="SQL-NOTIFY"><command>NOTIFY</></link>
|
|
to pass an optional string to listeners (Joachim Wieland)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <link linkend="SQL-CLUSTER"><command>CLUSTER</></link>
|
|
on all system tables (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Global system tables still cannot be clustered.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title><link linkend="SQL-COPY"><command>COPY</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <literal>*</> as a parameter in <literal>FORCE QUOTE</> for
|
|
<literal>COPY CSV</> (Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
This forces quotes for all <acronym>CSV</> output columns.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add new <command>COPY</> syntax that allows parameters to be
|
|
specified in parentheses (Robert Haas, Emmanuel Cecchet)
|
|
</para>
|
|
|
|
<para>
|
|
This allows greater flexibility for future <command>COPY</> options.
|
|
The old syntax is still supported.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="SQL-EXPLAIN"><command>EXPLAIN</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add new <command>EXPLAIN (BUFFERS)</> to report query buffer
|
|
activity (Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
log_*_stats log output, e.g. <link
|
|
linkend="runtime-config-statistics-monitor">log_statement_stats</link>,
|
|
no longer shows this information.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add hash usage information to <command>EXPLAIN</> output (Robert
|
|
Haas)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <command>EXPLAIN</> output in <acronym>XML</>, <acronym>JSON</>,
|
|
and <acronym>YAML</> formats (Robert Haas, Greg Sabino Mullane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <command>EXPLAIN</> options to be specified inside parentheses
|
|
(Robert Haas)
|
|
</para>
|
|
|
|
<para>
|
|
This allows for the expansion of <command>EXPLAIN</> options. The
|
|
old syntax is still supported.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="SQL-VACUUM"><command>VACUUM</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Change <command>VACUUM FULL</> to rewrite the entire table and
|
|
indexes, rather than moving around single rows to compact space
|
|
(Itagaki Takahiro, Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
The previous method was usually slower and caused index bloat.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add new <command>VACUUM</> syntax that allows parameters to be
|
|
specified in parentheses (Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
This allows greater flexibility for future <command>VACUUM</>
|
|
options. The old syntax is still supported.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Indexes</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow an index to be auto-named by not supplying an index name to
|
|
<link linkend="SQL-CREATEINDEX"><command>CREATE INDEX</></link> (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <link linkend="SQL-REINDEX"><command>REINDEX</></link>
|
|
on system indexes (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
WAS THIS POSSIBLE ON ANY SYSTEM TABLE BEFORE? NON-HARDWIRED ONES?
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <literal>point_ops</> opclass for GiST (Teodor Sigaev)
|
|
</para>
|
|
|
|
<para>
|
|
DETAILS?
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Use red-black trees for <acronym>GIN</> index creation
|
|
(Teodor Sigaev)
|
|
</para>
|
|
|
|
<para>
|
|
Red-black trees are self-balanced so allow for faster index
|
|
creation.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Data Types</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow hex values to be specified in <link
|
|
linkend="datatype-binary"><type>bytea</></link> strings
|
|
(Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
The variable <link
|
|
linkend="guc-bytea-output">bytea_output</link> controls
|
|
if hex (default) or octal escapes are used for <type>bytea</>
|
|
output. (SWITCH DEFAULT FOR BETA? PETER) Libpq's
|
|
<function>PQescapeByteaConn()</> now uses the hex format
|
|
for <productname>PostgreSQL</> 9.0 servers.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <link
|
|
linkend="guc-extra-float-digits">extra_float_digits</link>
|
|
to be increased to <literal>3</> (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
The previous maximum <varname>extra_float_digits</> was <literal>2</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title><link linkend="textsearch">Full Text Search</link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add prefix support for the full text search synonym dictionary
|
|
(Teodor Sigaev)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add full text search filtering dictionaries (Teodor Sigaev)
|
|
</para>
|
|
|
|
<para>
|
|
Filtering dictionaries allow tokens to be modified and passed to
|
|
subsequent dictionaries.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow underscores in full text email addresses (Teodor Sigaev)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Use more standards-compliant rules for <acronym>URL</>
|
|
parsing (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Functions</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow case-insensitive <link
|
|
linkend="functions-posix-regexp">regular expression</link>
|
|
matching with <acronym>UTF-8</> server encodings.
|
|
</para>
|
|
|
|
<para>
|
|
Previously, only <acronym>ASCII</> characters and single-byte
|
|
encodings worked properly. Other multi-byte, non-<acronym>UTF-8</>
|
|
encodings are still broken for case-insensitive regular expression
|
|
matching.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow function calls to supply parameter names and match them to named
|
|
parameters in the function definition (Pavel Stehule)
|
|
</para>
|
|
|
|
<para>
|
|
For example, if a function is defined to take parameters <literal>a</>
|
|
and <literal>b</>, it can be called with <literal>func(7 AS a, 12
|
|
AS b)</> or <literal>func(12 AS b, 7 AS a)</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add support for <link
|
|
linkend="functions-formatting"><function>to_char()</></link>
|
|
scientific notation output (<link
|
|
linkend="functions-formatting-numeric-table"><literal>'EEEE'</></link>)
|
|
(Pavel Stehule, Brendan Jurd)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <function>to_char()</> honor <link
|
|
linkend="functions-formatting-datetimemod-table"><literal>'FM'</></link>
|
|
(fill mode) in <literal>'Y'</>, <literal>'YY'</>, and
|
|
<literal>'YYY'</> specifications (Bruce Momjian, Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
It was already honored by <literal>'YYYY'</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Fix <function>to_char()</> to output the proper localized
|
|
numeric and monetary characters on <productname>Windows</>
|
|
(Hiroshi Inoue, Itagaki Takahir, Bruce Momjian)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Correct calculations of <link
|
|
linkend="functions-geometry-op-table">"overlap"</link>
|
|
and "contains" operations over polygons (Teodor Sigaev)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title>Aggregates</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow aggregate functions to use <literal>ORDER BY</> (Andrew
|
|
Gierth)
|
|
</para>
|
|
|
|
<para>
|
|
For example, this is now supported, <literal>array_agg(a ORDER BY
|
|
b)</>. This is useful for aggregates where the order of values is
|
|
significant.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the <link
|
|
linkend="functions-aggregate-table"><function>string_agg()</></link>
|
|
aggregate function which aggregates values into a single
|
|
string (Pavel Stehule)
|
|
</para>
|
|
|
|
<para>
|
|
An optional second argument allows specification of a delimiter.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Aggregate functions that are called with <literal>DISTINCT</> are
|
|
now passed NULL values if the aggregate transition function is
|
|
not marked as <literal>STRICT</> (Andrew Gierth)
|
|
</para>
|
|
|
|
<para>
|
|
For example, <literal>agg(DISTINCT x)</> might pass NULL <literal>x</>
|
|
values to <function>agg()</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Bit Strings</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="functions-binarystring-other"><function>get_bit()</></link>
|
|
and <function>set_bit()</> functions for <type>bit</>
|
|
strings, mirroring those for <type>bytea</> (Leonardo
|
|
F)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Implement <link
|
|
linkend="functions-string-sql"><function>OVERLAY()</></link>
|
|
(replace) for <type>bit</> strings and <type>bytea</>
|
|
(Leonardo F)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Object Information Functions</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="functions-admin-dbsize"><function>pg_table_size()</></link>
|
|
and <function>pg_indexes_size()</> to provide a more
|
|
user-friendly interface to the <function>pg_relation_size()</>
|
|
function (Bernd Helmle)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="functions-info-access-table"><function>has_sequence_privilege()</></link>
|
|
for sequence permission checking (Abhijit Menon-Sen)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <link linkend="information-schema">information
|
|
schema</link> properly display date type octet lengths
|
|
(Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
The reported length is now the maximum octet length; previously,
|
|
a huge value was reported.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Speed up information schema privilege views (Joachim Wieland)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Function and Trigger Creation</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Implement anonymous functions using the <link
|
|
linkend="SQL-DO"><command>DO</></link> statement (Petr
|
|
Jelinek, Joshua Tolley, Hannu Valtonen)
|
|
</para>
|
|
|
|
<para>
|
|
This allows execution of server-side code without the need to create
|
|
a new function and execute it.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow SQL-compliant <link
|
|
linkend="SQL-CREATETRIGGER">per-column triggers</link>
|
|
(Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
Such triggers are fired only if the specified columns are affected
|
|
by the query, e.g. in <command>UPDATE</>'s <literal>SET</> list.
|
|
information_schema now also shows this information.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <literal>WHEN</> clause to <link
|
|
linkend="SQL-CREATETRIGGER"><command>CREATE TRIGGER</></link>
|
|
to allow control over whether a trigger is fired (Takahiro
|
|
Itagaki)
|
|
</para>
|
|
|
|
<para>
|
|
While a check can be performed inside the trigger, doing it in an
|
|
external <literal>WHERE</> clause has performance benefits.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Server-Side Languages</title>
|
|
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the <literal>OR REPLACE</> clause to <link
|
|
linkend="SQL-CREATELANGUAGE"><command>CREATE LANGUAGE</></link>
|
|
(Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
This is helpful to optionally install a language if it does not
|
|
already exist, and is particularly helpful now that PL/pgSQL is
|
|
installed by default.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title><link linkend="plpgsql">PL/PgSQL</link> Server-Side
|
|
Language</title>
|
|
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Install server-side language PL/pgSQL by default (Bruce Momjian)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow PL/pgSQL to handle row types with dropped columns (Pavel Stehule)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <literal>IN</> parameters to be assigned values within
|
|
PL/pgSQL functions (Steve Prentice)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve error location reporting in PL/pgSQL (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have PL/pgSQL use the main lexer, rather than a custom version (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="plpgsql-cursors">PL/pgSQL Cursors</link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add count and <literal>ALL</> options to <command>MOVE
|
|
FORWARD</>/<literal>BACKWARD</> in PL/pgSQL (Pavel Stehule)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow PL/pgSQL's <literal>WHERE CURRENT OF</> to use a cursor
|
|
variable (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add PL/pgSQL's <command>OPEN cursor FOR EXECUTE</> to use parameters
|
|
(Pavel Stehule, Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
This is accomplished with a new <literal>USING</> clause.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="plperl">PL/Perl</link> Server-Side Language</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add new PL/Perl functions: <link
|
|
linkend="plperl-utility-functions"><function>quote_literal()</></link>,
|
|
<function>quote_nullable()</>, <function>quote_ident()</>,
|
|
<function>encode_bytea()</>, <function>decode_bytea()</>,
|
|
<function>looks_like_number()</>,
|
|
<function>encode_array_literal()</>,
|
|
<function>encode_array_constructor()</> (Tim Bunce)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add server variable <link
|
|
linkend="guc-plperl-on-init">plperl.on_init</link> to
|
|
specify a PL/Perl Perl initialization function (Tim
|
|
Bunce)
|
|
</para>
|
|
|
|
<para>
|
|
<link
|
|
linkend="guc-plperl-on-plperl-init">plperl.on_plperl_init</link>
|
|
and <varname>plperl.on_plperlu_init</> are also available
|
|
for trusted/untrusted-specific initialization.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve error context support in PL/Perl (Alexey Klyukin)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Support <command>END</> blocks in PL/Perl (Tim Bunce)
|
|
</para>
|
|
|
|
<para>
|
|
<command>END</> blocks do not currently allow database access.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <command>use strict</> in PL/Perl (Tim Bunce)
|
|
</para>
|
|
|
|
<para>
|
|
This can be enabled with the server variable <link
|
|
linkend="guc-plperl-use-strict">plperl.use_strict</link>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <command>require</> in PL/Perl (Tim Bunce)
|
|
</para>
|
|
|
|
<para>
|
|
This basically tests to see if the module is loaded, and if not,
|
|
generates an error.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <command>use feature</> in PL/Perl if Perl version 5.10 or
|
|
later is used (Tim Bunce)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Verify that PL/Perl return values are valid in the server encoding
|
|
(Andrew Dunstan)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve PL/Perl code structure (Tim Bunce)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
PL/Perl subroutines are now given names (Tim Bunce)
|
|
</para>
|
|
|
|
<para>
|
|
This is for the use of profiling and code coverage tools. DIDN'T
|
|
THEY HAVE NAMES BEFORE?
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
PL/Perl no longer allows <application>Safe</> version 2.20 because
|
|
it is unsafe (Tim Bunce)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="plpython">PL/Python</link> Server-Side Language</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add Unicode support in PL/Python (Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
Strings are automatically converted from/to the server encoding as
|
|
necessary.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve <type>bytea</> support in PL/Python (Caleb Welton)
|
|
</para>
|
|
|
|
<para>
|
|
<type>Bytea</> values passed into PL/Python now are represented as
|
|
binary, rather than the Postgres <type>bytea</> text format. Null
|
|
bytes are now also output properly from PL/Python. <type>Boolean</>
|
|
and <type>numeric</> value passing in PL/Python was also improved.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link linkend="plpython-arrays">array parameter/return
|
|
support</link> to PL/Python (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve mapping of domains to Python base types in PL/Python (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <application>Python</> 3 support to PL/Python (Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
The new server-side language is called <link
|
|
linkend="plpython-python23"><literal>plpython3u</></link>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve error location and exception reporting in PL/Python (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Client Applications</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link linkend="APP-VACUUMDB"><command>vacuumdb</></link>
|
|
<option>--analyze-only</> option to only analyze (Bruce Momjian)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title><link linkend="APP-PSQL"><application>psql</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Properly escape <application>psql</> <link
|
|
linkend="APP-PSQL-variables">variables</link> and
|
|
identifiers (Pavel Stehule, Robert Haas)
|
|
</para>
|
|
|
|
<para>
|
|
For example, <literal>:'var'</> will be escaped as a literal string, and
|
|
<literal>:"var"</> will be escaped as an SQL identifier.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Ignore leading UTF-8-encoded Unicode byte-order marker in
|
|
<application>psql</> (Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
This is enabled when the client encoding is <acronym>UTF-8</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Fix <command>psql --file -</> to properly honor <link
|
|
linkend="R1-APP-PSQL-3"><option>--single-transaction</></link>
|
|
(Bruce Momjian)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Prevent overwriting of <application>psql</>'s command-line history
|
|
if two <application>psql</> sessions are run simultaneously (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve <application>psql</>'s tab completion support (Itagaki
|
|
Takahiro)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect5>
|
|
<title><application>psql</> Display</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <application>psql</> to use fancy Unicode line-drawing
|
|
characters via <command>\pset linestyle unicode</> (Roger Leigh)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve display of wrapped columns in <application>psql</> (Roger
|
|
Leigh)
|
|
</para>
|
|
|
|
<para>
|
|
The previous format is available by using <command>\pset linestyle
|
|
old-ascii</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect5>
|
|
|
|
<sect5>
|
|
<title><application>psql</> <link
|
|
linkend="APP-PSQL-meta-commands"><command>\d</></link>
|
|
Commands</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <command>\d</> show child tables that inherit from the specified
|
|
parent (Damien Clochard)
|
|
</para>
|
|
|
|
<para>
|
|
<command>\d</> shows only the number of child tables, while
|
|
<command>\d+</> shows the names of all child tables.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Show definition of indexes in <command>\d index_name</> (Khee Chin)
|
|
</para>
|
|
|
|
<para>
|
|
The definition is useful for expression indexes.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
In <application>psql</>, show the view definition only with <command>\d+</>,
|
|
not with <command>\d</> (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect5>
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="APP-PGDUMP"><application>pg_dump</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <application>pg_dump</>/<application>pg_restore</>
|
|
<link linkend="pg-dump-options"><option>--clean</></link>
|
|
also remove large objects (Itagaki Takahiro)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Fix <application>pg_dump</> to properly dump large objects if
|
|
standard_conforming_strings is enabled (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Large objects dumps now use hex format for output. (SWITCH DEFAULT
|
|
FOR BETA? TOM)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <application>pg_dump</> to dump comments attached to columns
|
|
of composite types (Taro Minowa (Higepon))
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <application>pg_dump</> <link
|
|
linkend="pg-dump-options"><option>--verbose</></link>
|
|
output the <application>pg_dump</> and server versions
|
|
in text output mode (Jim Cox, Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
These were already present in custom output mode.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link
|
|
linkend="app-pg-ctl"><application>pg_ctl</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <application>pg_ctl</> to be safely used to start the
|
|
<application>postmaster</> at boot-time (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Previously the <application>pg_ctl</> process could have been mistakenly
|
|
identified as a running <application>postmaster</> based on a stale
|
|
<application>postmaster</> lock file.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Give <application>pg_ctl</> the ability to initialize the database
|
|
(like <application>initdb</>) (Zdenek Kotala)
|
|
</para>
|
|
</listitem>
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title><application>Development Tools</></title>
|
|
|
|
<sect4>
|
|
<title><link linkend="libpq"><application>libpq</></link></title>
|
|
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add new <application>libpq</> functions
|
|
<link
|
|
linkend="libpq-connect"><function>PQconnectdbParams()</></link>
|
|
and <function>PQconnectStartParams()</> (Guillaume
|
|
Lelarge)
|
|
</para>
|
|
|
|
<para>
|
|
These functions are similar to <function>PQconnectdb()</> and
|
|
<function>PQconnectStart()</> except they allow a null-terminated
|
|
array of connection options, rather than requiring all options to
|
|
be sent in a single string.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <application>libpq</> functions <link
|
|
linkend="libpq-exec-escape-string"><function>PQescapeLiteral()</></link>
|
|
and <function>PQescapeIdentifier()</> (Robert Haas)
|
|
</para>
|
|
|
|
<para>
|
|
These functions return appropriately quoted and escaped literal
|
|
strings and identifiers. The caller is not required to pre-allocate
|
|
the string result, as is required by <function>PQescapeStringConn()</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add checking for a per-user service file (<link
|
|
linkend="libpq-pgservice"><filename>.pg_service.conf</></link>),
|
|
which is checked before the site-wide service file
|
|
(Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
The file <filename>.pg_service.conf</> is assumed to be in the
|
|
user's home directory.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Properly report an error if the specified <application>libpq</> service
|
|
cannot be found (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Issue a warning if the <link
|
|
linkend="libpq-pgpass"><filename>.pgpass</></link>-retrieved
|
|
password fails (Bruce Momjian)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title><link linkend="ecpg"><application>ecpg</></link></title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link linkend="ecpg-descriptors"><acronym>SQLDA</></link>
|
|
(SQL Descriptor Area) support to <application>ecpg</>
|
|
(Boszormenyi Zoltan)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the <link linkend="ecpg-descriptors"><command>DESCRIBE</>
|
|
[<literal>OUTPUT</>]</link> statement to <application>ecpg</>
|
|
(Boszormenyi Zoltan)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add an <application>ecpg</> <link
|
|
linkend="ecpg-library">function</link> to return the
|
|
current transaction status (Bernd Helmle)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add the <literal>string</> data type in <application>ecpg</>
|
|
Informix-compatibility mode (Zoltan Boszormenyi)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <application>ecpg</> to use <literal>new</> and <literal>old</>
|
|
variable names without restriction (Michael Meskes)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <application>ecpg</> to use variable names in
|
|
<function>free()</>(Michael Meskes)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Have <application>ecpg</> return zero for non-SQL3 data types
|
|
(Michael Meskes))
|
|
</para>
|
|
|
|
<para>
|
|
Previously it returned the negative of the data type <type>oid</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect5>
|
|
<title><application>ecpg</> Cursors</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <application>ecpg</> out-of-scope cursor support in native mode
|
|
(Boszormenyi Zoltan)
|
|
</para>
|
|
|
|
<para>
|
|
This allows <command>DECLARE</> to use variables that are not in
|
|
scope when <command>OPEN</> is called. This facility already existed
|
|
in <application>ecpg</> Informix-compatibility mode.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow dynamic <application>ecpg</> cursor names (Boszormenyi Zoltan)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow <application>ecpg</> to use noise words <literal>FROM</> and
|
|
<literal>IN</> in <command>FETCH</> and <command>MOVE</> (Zoltan
|
|
Boszormenyi)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect5>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Build Options</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Enable client thread safety by default (Bruce Momjian)
|
|
</para>
|
|
|
|
<para>
|
|
Thread-safe builds can be disabled with <link
|
|
linkend="configure"><application>configure</></link>
|
|
<option>--disable-thread-safety</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add a compile-time option to allow the Linux out-of-memory killer
|
|
to kill backends (Alex Hunsaker, Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Now that <filename>/proc/self/oom_adj</> allows disabling
|
|
of the <productname>Linux</> out-of-memory (<acronym>OOM</>)
|
|
killer for the postmaster and its children, the new
|
|
compile-time option <link
|
|
linkend="linux-memory-overcommit"><literal>-DLINUX_OOM_ADJ=0</></link>
|
|
allows the killer to be enabled for <application>postmaster</>
|
|
children. <application>pg_config</> shows if this flag
|
|
was used during compilation.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Use <productname>DocBook</> <acronym>XSL</> stylesheets for man page
|
|
building (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title>Makefiles</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
New <filename>Makefile</> targets <link
|
|
linkend="build"><literal>world</></link>,
|
|
<literal>install-world</>, and <literal>installcheck-world</>
|
|
(Andrew Dunstan)
|
|
</para>
|
|
|
|
<para>
|
|
These are similar to the existing <literal>all</>, <literal>install</>,
|
|
and <literal>installcheck</> targets, but they build <acronym>HTML</>
|
|
documentation, build and test <filename>/contrib</>, and test
|
|
server-side languages and <application>ecpg</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add data and documentation location control to <link
|
|
linkend="xfunc-c-pgxs"><acronym>PGXS</></link> Makefiles
|
|
(Mark Cave-Ayland)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Restructure the <acronym>HTML</> documentation build
|
|
<filename>Makefile</> rules (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>New Requirements</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Require <application>Autoconf</> 2.63 for building from source (Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Require <application>Flex</> 2.5.31 or later to build from source
|
|
(Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Require <application>Perl</> version 5.8 or greater to build the server
|
|
from a <acronym>CVS</> copy (John Naylor, Andrew)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Windows</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add support for compiling on <link
|
|
linkend="install-win32-full">64-bit
|
|
<productname>Windows</></link> and running in 64-bit
|
|
mode (Tsutomu Yamada, Magnus)
|
|
</para>
|
|
|
|
<para>
|
|
This allows for large shared memory sizes on <productname>Windows</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow server builds using <link
|
|
linkend="install-win32-full"><productname>Visual Studio
|
|
2008</></link> (Magnus Hagander)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow multi-processor compilation using <productname>Microsoft Visual
|
|
C</> (Magnus Hagander)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Source Code</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Distribute documentation in a proper directory tree, rather than
|
|
as tar archive files inside the main distribution tarball (Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
For example, the <acronym>HTML</> documentation is now in
|
|
<filename>doc/src/sgml/html</>; the manual pages are packaged
|
|
similarly.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Enable the server lexer to be reentrant (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
This was needed for use of the lexer by PL/pgSQL.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve speed of memory allocation (Tom Lane, Greg Stark)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add system columns to better document the use of indexes for constraint
|
|
enforcement (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow multiple actions to be communicated using the same operating
|
|
system signal (Fujii Masao)
|
|
</para>
|
|
|
|
<para>
|
|
This allows improved backend communication as new features are
|
|
added.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve source code test coverage, including /contrib, PL/Python,
|
|
and PL/Perl (Peter Eisentraut, Andrew Dustan)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Remove the use of flat files for system table bootstrapping
|
|
(Tom Lane, Alvaro Herrera)
|
|
</para>
|
|
|
|
<para>
|
|
This also improves performance when using millions of users and
|
|
databases.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Improve the ability to translate <application>psql</> strings
|
|
(Peter Eisentraut)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Reduce the length of some file names so file paths are less than
|
|
100 characters (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Some decompression programs have problems with long file names.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Tighten input requirements for <type>int2</> vector input (Caleb
|
|
Welton)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add a new <link
|
|
linkend="errcodes-table"><literal>ERRCODE_INVALID_PASSWORD</></link>
|
|
<literal>SQLSTATE</> error code (Bruce Momjian)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Properly remove the few remaining personal source code copyright
|
|
entries (Bruce Momjian)
|
|
</para>
|
|
|
|
<para>
|
|
The personal copyright notices were insignificant but the community
|
|
occasionally had to answer questions about them.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
<sect4>
|
|
<title>Feature Support</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Use a more modern <acronym>API</> for <application>Bonjour</> (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
Bonjour now requires <productname>OS X</> 10.3 or later.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add processor test-and-test lock support for the <productname>SuperH</>
|
|
architecture (Nobuhiro Iwamatsu)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow non-<application>GCC</> compilers to use inline functions if
|
|
they support them (Kurt Harriman)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Remove support for platforms that don't have a working 64-bit
|
|
integer data types (Tom Lane)
|
|
</para>
|
|
|
|
<para>
|
|
It is believed all supported platforms have working 64-bit integer
|
|
data types.
|
|
</para>
|
|
</listitem>
|
|
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Server Programming</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow use of <productname>C++</> functions in backend code (Kurt
|
|
Harriman, Peter Eisentraut)
|
|
</para>
|
|
|
|
<para>
|
|
This removes keyword conflicts that previously made <productname>C++</>
|
|
usage difficult in backend code. <literal>extern "C" { }</> might still
|
|
be necessary.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="xaggr"><function>AggCheckCallContext()</></link>
|
|
for use in detecting if a <productname>C</> function is
|
|
being called as an aggregate (Hitoshi Harada)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Require <function>fastgetattr()</> and <function>heap_getattr()</>
|
|
backend macros to use a non-NULL fourth argument (Robert Haas)
|
|
KEEP?
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Server Hooks</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add parser hooks to access column and parameter references in
|
|
queries (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add a hook so loadable modules can control utility commands (Itagaki
|
|
Takahiro)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Allow the calling of parser hooks from <acronym>SPI</> and cached
|
|
plans (Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
<sect4>
|
|
<title>Binary Upgrade Support</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add support for preservation of all <link
|
|
linkend="catalog-pg-class"><structname>relfilenodes</></link>,
|
|
for use during binary upgrades (Bruce Momjian)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add support for binary upgrades to preserve <structname>pg_type</>
|
|
and <structname>pg_enum</> <type>oids</> (Bruce Momjian)
|
|
</para>
|
|
|
|
<para>
|
|
This is needed to allow binary upgrades of user-defined composite
|
|
types, arrays, and enums (enumerated types).
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Move tablespace data directories into their own
|
|
<productname>PostgreSQL</> version-specific subdirectory (Bruce Momjian)
|
|
</para>
|
|
|
|
<para>
|
|
This simplifies binary upgrades.
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect4>
|
|
|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Contrib</title>
|
|
<itemizedlist>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link linkend="pgupgrade"><filename>/contrib/pg_upgrade</></>
|
|
to support in-place upgrades (Bruce)
|
|
</para>
|
|
|
|
<para>
|
|
This avoids the requirement of dumping/reloading the database when
|
|
upgrading to a new major release of PostgreSQL. It supports upgrades
|
|
from PostgreSQL 8.3 and 8.4.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add multi-threaded option (<option>-j</>) to <link
|
|
linkend="pgbench"><filename>/contrib/pgbench</></link>
|
|
(Itagaki Takahiro)
|
|
</para>
|
|
|
|
<para>
|
|
This allows multiple <acronym>CPU</>s to be used for pgbench tests.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <command>\shell</> and <command>\setshell</> meta
|
|
commands to <link
|
|
linkend="pgbench"><filename>/contrib/pgbench</></link>
|
|
(Michael Paquier)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
New features for <link
|
|
linkend="dict-xsyn"><filename>/contrib/dict_xsyn</></link>
|
|
(Sergey Karpov)
|
|
</para>
|
|
|
|
<para>
|
|
The new options are <literal>matchorig</>, <literal>matchsynonyms</>,
|
|
and <literal>keepsynonyms</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add full text dictionary <link
|
|
linkend="unaccent"><filename>/contrib/unaccent</></link>
|
|
(Teodor Sigaev)
|
|
</para>
|
|
|
|
<para>
|
|
This filter dictionary removes accents from tokens.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="CONTRIB-DBLINK-GET-NOTIFY"><function>dblink_get_notify()</></link>
|
|
to <filename>/contrib/dblink</> (Marcus Kempe)
|
|
</para>
|
|
|
|
<para>
|
|
This allows async notifications in <productname>dblink</>.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Greatly increase <link
|
|
linkend="hstore"><filename>/contrib/hstore</></link>'s
|
|
length limit and add btree and hash abilities so <literal>GROUP
|
|
BY</> and <literal>DISTINCT</> operations are possible
|
|
(Andrew Gierth)
|
|
</para>
|
|
|
|
<para>
|
|
New functions and operators were also added.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add <link
|
|
linkend="passwordcheck"><filename>/contrib/passwordcheck</></link>
|
|
which can check the strength of assigned passwords (Laurenz
|
|
Albe)
|
|
</para>
|
|
|
|
<para>
|
|
The source code of this module should be modified to implement
|
|
site-specific password policies.
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add query text to <link
|
|
linkend="auto-explain"><filename>/contrib/auto_explain</></link>
|
|
output (Andrew Dunstan)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Add buffer access counters to <link
|
|
linkend="pgstatstatements"><filename>/contrib/pg_stat_statements</></link>
|
|
(Itagaki Takahiro)
|
|
</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>
|
|
Update <link
|
|
linkend="server-start"><filename>/contrib/start-scripts/linux</></link>
|
|
to use <filename>/proc/self/oom_adj</> to disable the
|
|
<link linkend="linux-memory-overcommit"><productname>Linux</>
|
|
out-of-memory</link> (<acronym>OOM</>) killer (Alex
|
|
Hunsaker, Tom Lane)
|
|
</para>
|
|
</listitem>
|
|
|
|
</itemizedlist>
|
|
|
|
</sect3>
|
|
</sect2>
|
|
</sect1>
|