<para>

Treat object-name columns in

the <link linkend="information-schema"><structname>information_schema</structname></link>

views as being of type <type>name</type> not <type>varchar</type>

views as being of type <type>name</type>, not <type>varchar</type>

(Tom Lane)

</para>

<para>

Reduce the <acronym>WAL</acronym> write overhead

of <acronym>GiST</acronym>, <acronym>GIN</acronym> and

of <acronym>GiST</acronym>, <acronym>GIN</acronym>, and

<acronym>SP-GiST</acronym> index creation (Anastasia Lubennikova,

Andrey V. Lepikhov)

</para>

-->

<para>

Allow <link linkend="storage-toast"><literal>TOASTed</literal></link>

Allow <link linkend="storage-toast">toasted</link>

values to be minimally decompressed (Paul Ramsey)

</para>

-->

<para>

Allow <link linkend="sql-altertable"><command>ALTER TABLE .. SET

Allow <link linkend="sql-altertable"><command>ALTER TABLE ... SET

NOT NULL</command></link> to avoid unnecessary table scans (Sergei

Kornilov)

</para>

-->

<para>

Allow <command>ALTER TABLE .. SET DATA TYPE</command> changing between

Allow <command>ALTER TABLE ... SET DATA TYPE</command> changing between

<type>timestamp</type> and <type>timestamptz</type> to avoid a

table rewrite when the session time zone is <acronym>UTC</acronym>

(Noah Misch)

<para>

Progress is reported in the <link

linkend="create-index-progress-reporting"><structname>pg_stat_progress_create_index</structname></link>

system view

system view.

</para>

</listitem>

</para>

<para>

This output can also be obtainedin <xref linkend="auto-explain"/>

This output can also be obtainedwhen using <xref linkend="auto-explain"/>

by setting <varname>auto_explain.log_settings</varname>.

</para>

</listitem>

<para>

Add connection parameter <xref linkend="libpq-tcp-user-timeout"/>

to control libpq's <acronym>TCP</acronym> timeout (Ryohei Nagaura)

to control <application>libpq</application>'s <acronym>TCP</acronym>

timeout (Ryohei Nagaura)

</para>

</listitem>

-->

<para>

Allow libpq (and thus psql) to report only

Gautheron)

Allow<application>libpq</application> (and thus

<literal>SQLSTATE</literal> value in error messages (DidierGautheron)

</para>

</listitem>

-->

<para>

Add libpq

Add<application>libpq</application>

function <link linkend="libpq-pqresultmemorysize"><function>PQresultMemorySize()</function></link>

to report the memory used by a query result (Lars Kanis, Tom Lane)

</para>

-->

<para>

Remove the no-display/debug flag from libpq's

Remove the no-display/debug flag from<application>libpq</application>'s

<literal>options</literal> connection parameter (Peter Eisentraut)

</para>

-->

<para>

Allow vacuumdb to disable waiting for locks or skipping all-visible

pages (Nathan Bossart)

Allow<application>vacuumdb</application> to disable waiting for locks

or skipping all-visiblepages (Nathan Bossart)

</para>

<para>

-->

<para>

Improve tab completion of <command>CREATE TABLE, CREATE TRIGGER,

CREATE EVENT TRIGGER, ANALYZE, EXPLAIN, VACUUM, ALTER TABLE,

ALTER INDEX, ALTER DATABASE, ALTER INDEX ALTER COLUMN</command>

Improve tab completion of <command>CREATE TABLE</command>,

<command>CREATE TRIGGER</command>,

<command>CREATE EVENT TRIGGER</command>,

<command>ANALYZE</command>, <command>EXPLAIN</command>,

<command>VACUUM</command>, <command>ALTER TABLE</command>,

<command>ALTER INDEX</command>, <command>ALTER DATABASE</command>,

and <command>ALTER INDEX ALTER COLUMN</command>

(Dagfinn Ilmari Mannsåker, Tatsuro Yamada, Michaël Paquier,

Tom Lane, Justin Pryzby)

</para>

-->

<para>

Improve precision ofpgbench's <option>--rate</option>

option (Tom Lane)

Improve precision of<application>pgbench</application>'s

<option>--rate</option>option (Tom Lane)

</para>

</listitem>

2018-10-15 [5b75a4f82] pgbench: Report errors during run better

-->

<para>

Improve pgbench's error reporting with clearer messages and return

codes (Peter Eisentraut)

Improve<application>pgbench</application>'s error reporting with

clearer messages and returncodes (Peter Eisentraut)

</para>

</listitem>

<para>

This enables the development of new <link linkend="tableam">table

access methods</link>, which can optimize storage for different

use-cases. The existing <literal>heap</literal> access method

usecases. The existing <literal>heap</literal> access method

remains the default.

</para>

</listitem>