<!-- doc/src/sgml/release-9.1.sgml -->
-<!-- This is up-to-date with commits through 2010-10-29 -->
+<!-- This is up-to-date with commits through 2010-12-23 -->
<sect1 id="release-9-1-alpha">
- <title>Release 9.1alpha2</title>
+ <title>Release 9.1alpha3</title>
<sect2>
<title>Overview</title>
<para>
<listitem>
<para>
- <emphasis>Add ALTER TYPE ... ADD/DROP/ALTER/RENAME ATTRIBUTE</emphasis>
+ <emphasis>Add ALTER ... SET SCHEMA support for conversions,
+ operators, operator classes, operator families, text search
+ configurations, text search dictionaries, text search
+ parsers, and text search templates</emphasis>
</para>
</listitem>
<listitem>
<para>
- <emphasis>Support triggers on views</emphasis>
+ <emphasis>Make TRUNCATE ... RESTART IDENTITY restart
+ sequences transactionally</emphasis>
+ </para>
+
+ <para>
+ Previously, the sequence restart did not roll back on error.
+ This meant that an error between truncating and committing
+ left the sequences out of sync with the table contents, with
+ potentially bad consequences as were noted in a Warning on
+ the TRUNCATE man page.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Prevent invoking I/O conversion casts via
+ functional/attribute notation</emphasis>
+ </para>
+ <para>
+ This was found to be confusing in some cases. The
+ functionality is still available via cast syntax.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add ALTER TYPE ... ADD/DROP/ALTER/RENAME ATTRIBUTE
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support triggers on views
</para>
<para>
<listitem>
<para>
- <emphasis>Allow WITH clauses to be attached to INSERT, UPDATE, DELETE
- statements</emphasis>
+ Allow WITH clauses to be attached to INSERT, UPDATE, DELETE
+ statements
</para>
<para>
<listitem>
<para>
- <emphasis>Allow new values to be added to an existing enum type</emphasis>
+ Allow new values to be added to an existing enum type
</para>
</listitem>
<listitem>
<para>
- <emphasis>Support MergeAppend plans, to allow sorted output
- from append relations</emphasis>
+ <emphasis>Optimize the commit_siblings configuration parameter</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>KNN GiST, otherwise known as order-by-operator support for GiST</emphasis>
+ </para>
+
+ <para>
+ This can be used to optimize nearest-neighbor searches.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ <emphasis>Improve process shutdown speed</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Speed up conversion of signed integers to C strings</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support MergeAppend plans, to allow sorted output
+ from append relations
</para>
<para>
<listitem>
<para>
- <emphasis>Reduce the memory requirement for large ispell dictionaries</emphasis>
+ Reduce the memory requirement for large ispell dictionaries
</para>
</listitem>
<listitem>
<para>
- <emphasis>Teach CLUSTER to use seqscan-and-sort when it's faster than
- indexscan</emphasis>
+ Teach CLUSTER to use seqscan-and-sort when it's faster than
+ indexscan
</para>
</listitem>
<listitem>
<para>
- <emphasis>Improve GIN indexscan cost estimation</emphasis>
+ Improve GIN indexscan cost estimation
</para>
</listitem>
<listitem>
<para>
- <emphasis>Performance improvements in pg_upgrade for uses with many tables</emphasis>
+ Performance improvements in pg_upgrade for uses with many tables
</para>
</listitem>
<listitem>
<para>
- <emphasis>Allow pg_ctl to register the service in either AUTO or DEMAND start
- type</emphasis>
+ <emphasis>Instrument checkpoint sync calls</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Use the same lexer for recovery.conf that has been used for postgresql.conf</emphasis>
+ </para>
+
+ <para>
+ Among other things, this allows values in recovery.conf to be unquoted.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Add column buffers_backend_fsync to pg_stat_bgwriter</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Add monitoring function pg_last_xact_replay_timestamp()</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow pg_ctl to register the service in either AUTO or DEMAND start
+ type
</para>
</listitem>
<listitem>
<para>
- <emphasis>Support host names and host key
+ Support host names and host key
word <literal>all</literal>
- in <filename>pg_hba.conf</filename></emphasis>
+ in <filename>pg_hba.conf</filename>
</para>
</listitem>
<listitem>
<para>
- <emphasis>Add SECURITY LABEL command</emphasis>
+ Add SECURITY LABEL command
</para>
<para>
This is intended as infrastructure to support integration
<listitem>
<para>
- <emphasis>Accept <literal>public</literal> as a pseudo-role
+ <emphasis>Add pg_read_binary_file() and whole-file-at-once
+ versions of pg_read_file()</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Add new function format(), for sprintf-like string formatting</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Add pg_describe_object() function to obtain textual
+ descriptions of objects as stored in pg_depend</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Accept <literal>public</literal> as a pseudo-role
name in <literal>has_table_privilege()</literal> and friends
to see if a particular privilege has been granted to
- <literal>PUBLIC</literal></emphasis>
+ <literal>PUBLIC</literal>
</para>
</listitem>
<listitem>
<para>
+ <emphasis>Add <quote>S</quote> option to \dn command in psql</emphasis>
+ </para>
+ <para>
+ System schemas are now hidden by default by \dn.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
Add \conninfo command to psql, to show current connection
info
</para>
</itemizedlist>
</sect3>
<sect3>
+ <title>libpq</title>
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ <emphasis>Add PQlibVersion() function</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>When reporting the server as not responding, if the
+ hostname was supplied, also print the IP address</emphasis>
+ </para>
+ <para>
+ This allows IPv4 and IPv6 failures to be distinguished. Also
+ useful when a hostname resolves to multiple IP addresses.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Add functions PQping and PQpingParams to allow
+ detection of the server's status, including a status where
+ the server is running but refuses ordinary connections</emphasis>
+ </para>
+ <para>
+ pg_ctl uses the new function. This fixes the case where
+ pg_ctl reports that the server is not running (cannot
+ connect) but in fact it is running.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+ </sect3>
+ <sect3>
<title>Procedural Languages</title>
<sect4>
<title>PL/pgSQL</title>
<itemizedlist>
<listitem>
<para>
- <emphasis>Allow generic record arguments to PL/Perl functions</emphasis>
+ Allow generic record arguments to PL/Perl functions
</para>
</listitem>
</itemizedlist>
<listitem>
<para>
- <emphasis>Updates to contrib/isn ISBN tables</emphasis>
+ <emphasis>New module contrib/auth_delay</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Updates to contrib/isn ISBN tables
</para>
</listitem>
<listitem>
<para>
+ <emphasis>Rewrite the GiST insertion logic so that the
+ post-recovery cleanup stage to finish incomplete inserts or
+ splits is not needed anymore</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Add support for collecting
+ <quote>minidump</quote>-style crash dumps on
+ Windows</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Replace pg_class.relistemp column with relpersistence</emphasis>
+ </para>
+
+ <para>
+ This is for upcoming work on unlogged and global temporary tables.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>GNU make 3.80 or newer is now required</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ <emphasis>Improved support for parallel make, make -k, and make -q</emphasis>
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
Include the backend ID in the relpath of temporary
relations
</para>
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