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Sync release notes with CVS HEAD; various editorial improvements.

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Tom Lane 2007-12-02 03:47:11 +00:00
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commit 7cac32534f
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doc/src/sgml/release.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.557 2007/11/30 03:27:48 momjian Exp $ --> <!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.558 2007/12/02 03:47:11 tgl Exp $ -->
<!-- <!--
Typical markup: Typical markup:
@ -41,7 +41,7 @@ do it for earlier branch release files.
<note> <note>
<title>Release date</title> <title>Release date</title>
<simpara>2007-12-??</simpara> <simpara>2007-12-??</simpara>
<para>CURRENT AS OF 2007-11-29</> <para>CURRENT AS OF 2007-12-01</>
</note> </note>
<sect2> <sect2>
@ -380,8 +380,8 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
<command>ALTER SEQUENCE</> no longer affects <function>currval()</> <command>ALTER SEQUENCE</> no longer affects the sequence's
(Tom) <function>currval()</> state (Tom)
</para> </para>
</listitem> </listitem>
@ -545,6 +545,23 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Disallow database encodings that are inconsistent with the server's
locale setting (Tom)
</para>
<para>
On most platforms, <literal>C</> locale is the only locale that
will work with any database encoding. Other locale settings imply
a specific encoding and will misbehave if the database encoding
is something different. (Typical symptoms include bogus textual
sort order and wrong results from <function>upper()</> or
<function>lower()</>.) The server now rejects attempts to create
databases that have an incompatible encoding.
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Ensure that <function>chr()</function> cannot create Ensure that <function>chr()</function> cannot create
@ -738,6 +755,19 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Avoid incrementing the command counter after a read-only command (Tom)
</para>
<para>
There was formerly a hard limit of 2<superscript>32</>
(4 billion) commands per transaction. Now only commands that
actually changed the database count, so while this limit still
exists, it should be significantly less annoying.
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Create a dedicated <acronym>WAL</> writer process to off-load Create a dedicated <acronym>WAL</> writer process to off-load
@ -814,6 +844,12 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Speed up operator lookup for cases with non-exact datatype matches (Tom)
</para>
</listitem>
</itemizedlist> </itemizedlist>
</sect3> </sect3>
@ -900,6 +936,40 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Guard against a very-low-probability data loss scenario by preventing
re-use of a deleted table's relfilenode until after the next
checkpoint (Heikki)
</para>
</listitem>
<listitem>
<para>
Fix <command>CREATE CONSTRAINT TRIGGER</>
to convert old-style foreign key trigger definitions into regular
foreign key constraints (Tom)
</para>
<para>
This will ease porting of foreign key constraints carried forward from
pre-7.3 databases, if they were never converted using
<filename>contrib/adddepend</>.
</para>
</listitem>
<listitem>
<para>
Fix <literal>DEFAULT NULL</> to override inherited defaults (Tom)
</para>
<para>
<literal>DEFAULT NULL</> was formerly considered a noise phrase, but it
should (and now does) override non-null defaults that would otherwise
be inherited from a parent table or domain.
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Add new encodings EUC_JIS_2004 and SHIFT_JIS_2004 (Tatsuo) Add new encodings EUC_JIS_2004 and SHIFT_JIS_2004 (Tatsuo)
@ -914,7 +984,12 @@ current_date &lt; 2017-11-17
<para> <para>
Change server startup log message from <quote>database system is Change server startup log message from <quote>database system is
ready</quote> to <quote>database system is ready to accept ready</quote> to <quote>database system is ready to accept
connections</quote> connections</quote>, and adjust its timing
</para>
<para>
The message now appears only when the postmaster is really ready
to accept connections.
</para> </para>
</listitem> </listitem>
@ -995,8 +1070,8 @@ current_date &lt; 2017-11-17
</para> </para>
<para> <para>
CSV-format log files can be loaded into a database table for subsequent CSV-format log files can easily be loaded into a database table for
analysis. subsequent analysis.
</para> </para>
</listitem> </listitem>
@ -1066,7 +1141,7 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
Fix pgstats counting of live and dead tuples to recognize that Fix statistical counting of live and dead tuples to recognize that
committed and aborted transactions have different effects (Tom) committed and aborted transactions have different effects (Tom)
</para> </para>
</listitem> </listitem>
@ -1240,15 +1315,27 @@ current_date &lt; 2017-11-17
Create a general mechanism that supports casts to and from the Create a general mechanism that supports casts to and from the
standard string types (<type>TEXT</type>, <type>VARCHAR</type>, standard string types (<type>TEXT</type>, <type>VARCHAR</type>,
<type>CHAR</type>) for <emphasis>every</emphasis> datatype, by <type>CHAR</type>) for <emphasis>every</emphasis> datatype, by
invoking the datatype's I/O functions (Tom) XXX examples? invoking the datatype's I/O functions (Tom)
</para> </para>
<para> <para>
Previously, such casts were available only for types that had
specialized function(s) for the purpose.
These new casts are assignment-only in the to-string direction, These new casts are assignment-only in the to-string direction,
explicit-only in the other direction, and therefore should create no explicit-only in the other direction, and therefore should create no
surprising behavior. Various surprising behavior.
datatype-specific casting functions that were equivalent to this </para>
behavior were removed. </listitem>
<listitem>
<para>
Allow <literal>UNION</> and related constructs to return a domain
type, when all inputs are of that domain type (Tom)
</para>
<para>
Formerly, the output would be considered to be of the domain's base
type.
</para> </para>
</listitem> </listitem>
@ -1263,8 +1350,7 @@ current_date &lt; 2017-11-17
comparisons, if the data types have compatible hash functions. comparisons, if the data types have compatible hash functions.
Currently, cross-data-type hashing support exists for Currently, cross-data-type hashing support exists for
<type>smallint</type>/<type>integer</type>/<type>bigint</type>, <type>smallint</type>/<type>integer</type>/<type>bigint</type>,
and for <type>float4</type>/<type>float8</type>. XXX how do you do and for <type>float4</type>/<type>float8</type>.
hash aggregate two different data types
</para> </para>
</listitem> </listitem>
@ -1360,8 +1446,8 @@ current_date &lt; 2017-11-17
<para> <para>
This allows a user-defined type to take a modifier, like This allows a user-defined type to take a modifier, like
<type>ssnum(7)</>. Previously only <type>ssnum(7)</>. Previously only built-in
predefined system data types could have modifiers. data types could have modifiers.
</para> </para>
</listitem> </listitem>
@ -1428,7 +1514,7 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
Implement <command>CREATE TABLE LIKE ... INCLUDING Implement <command>CREATE TABLE LIKE ... INCLUDING
INDEXES</command> (Trevor Hardcastle, Nikhil S, Neil) INDEXES</command> (Trevor Hardcastle, Nikhil Sontakke, Neil)
</para> </para>
</listitem> </listitem>
@ -1623,7 +1709,7 @@ current_date &lt; 2017-11-17
snapshot that does not change during the transaction. This function snapshot that does not change during the transaction. This function
allows the snapshot to be discarded and a new snapshot loaded during allows the snapshot to be discarded and a new snapshot loaded during
the next statistics query. This is particularly useful for PL/PgSQL the next statistics query. This is particularly useful for PL/PgSQL
functions which are confined to a single transaction. functions, which are confined to a single transaction.
</para> </para>
</listitem> </listitem>
@ -1769,6 +1855,17 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Make qualification of variables with block labels work properly (Tom)
</para>
<para>
Formerly, outer-level block labels could unexpectedly interfere with
recognition of inner-level record or row references.
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Tighten requirements for <literal>FOR</literal> loop Tighten requirements for <literal>FOR</literal> loop
@ -1779,7 +1876,6 @@ current_date &lt; 2017-11-17
Prevent non-positive <literal>STEP</> values, and handle Prevent non-positive <literal>STEP</> values, and handle
loop overflows. loop overflows.
</para> </para>
</listitem> </listitem>
<listitem> <listitem>
@ -1800,7 +1896,7 @@ current_date &lt; 2017-11-17
<para> <para>
Allow type-name arguments to PL/Perl Allow type-name arguments to PL/Perl
<function>spi_prepare()</function> to be data type aliases in <function>spi_prepare()</function> to be data type aliases in
addition to names in <literal>pg_type</literal> (Andrew) addition to names found in <literal>pg_type</literal> (Andrew)
</para> </para>
</listitem> </listitem>
@ -1808,14 +1904,14 @@ current_date &lt; 2017-11-17
<para> <para>
Allow type-name arguments to PL/Python Allow type-name arguments to PL/Python
<function>plpy.prepare()</function> to be data type aliases in <function>plpy.prepare()</function> to be data type aliases in
addition to names in <literal>pg_type</literal> (Andrew) addition to names found in <literal>pg_type</literal> (Andrew)
</para> </para>
</listitem> </listitem>
<listitem> <listitem>
<para> <para>
Allow type-name arguments to PL/Tcl <function>spi_prepare</> to Allow type-name arguments to PL/Tcl <function>spi_prepare</> to
be data type aliases in addition to names in be data type aliases in addition to names found in
<literal>pg_type</literal> (Andrew) <literal>pg_type</literal> (Andrew)
</para> </para>
</listitem> </listitem>
@ -1920,6 +2016,13 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Correctly detect and report errors while reading a <literal>-f</>
input file (Peter)
</para>
</listitem>
</itemizedlist> </itemizedlist>
</sect3> </sect3>
@ -1993,19 +2096,21 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
Add <application>pg_ctl</> timeout parameter (Bruce) Add a <literal>-t</> (timeout) parameter to <application>pg_ctl</>
(Bruce)
</para> </para>
<para> <para>
This controls how long <application>pg_ctl</> will wait when waiting This controls how long <application>pg_ctl</> will wait when waiting
for server startup or shutdown. for server startup or shutdown. Formerly the timeout was hard-wired
as 60 seconds.
</para> </para>
</listitem> </listitem>
<listitem> <listitem>
<para> <para>
Add <application>pg_ctl</> option to control generation Add a <application>pg_ctl</> option to control generation
of core dumps (Andrew) of server core dumps (Andrew)
</para> </para>
</listitem> </listitem>
@ -2082,7 +2187,7 @@ current_date &lt; 2017-11-17
<para> <para>
If this returns true after a failed connection attempt, a client If this returns true after a failed connection attempt, a client
application should prompt the user for a password. In the past application should prompt the user for a password. In the past
applications have had to check for a specific error messages to applications have had to check for a specific error message string to
decide whether a password is needed; that approach is now decide whether a password is needed; that approach is now
deprecated. deprecated.
</para> </para>
@ -2120,7 +2225,7 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
Make ecpg libraries export only necessary API symbols (Michael) Make the ecpg libraries export only necessary API symbols (Michael)
</para> </para>
</listitem> </listitem>
@ -2147,6 +2252,13 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Drastically reduce postmaster's memory usage when it has many child
processes (Magnus)
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Allow regression tests to be started by an administrative Allow regression tests to be started by an administrative
@ -2168,6 +2280,17 @@ current_date &lt; 2017-11-17
<title>Server Programming Interface (<acronym>SPI</>)</title> <title>Server Programming Interface (<acronym>SPI</>)</title>
<itemizedlist> <itemizedlist>
<listitem>
<para>
Add cursor-related functionality in SPI (Pavel Stehule)
</para>
<para>
Allow access to the cursor-related planning options, and add
<command>FETCH</>/<command>MOVE</> routines.
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Allow execution of cursor commands through Allow execution of cursor commands through
@ -2182,7 +2305,7 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
SPI plan pointers are now <literal>SPIPlanPtr</> instead of SPI plan pointers are now declared as <literal>SPIPlanPtr</> instead of
<literal>void *</> (Tom) <literal>void *</> (Tom)
</para> </para>
@ -2192,17 +2315,6 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Add cursor-related functionality in SPI (Pavel Stehule)
</para>
<para>
Allow access to the cursor-related planning options, and add
<command>FETCH</>/<command>MOVE</> routines.
</para>
</listitem>
</itemizedlist> </itemizedlist>
</sect3> </sect3>
@ -2213,16 +2325,16 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
Add <application>configure</> <literal>--enable-profiling</> Add <application>configure</> option <literal>--enable-profiling</>
to enable code profiling (works only with <application>gcc</>) to enable code profiling (works only with <application>gcc</>)
(Korry Douglas and Nikhil S) (Korry Douglas and Nikhil Sontakke)
</para> </para>
</listitem> </listitem>
<listitem> <listitem>
<para> <para>
Add <application>configure</> <literal>--with-system-tzdata</> Add <application>configure</> option <literal>--with-system-tzdata</>
to use the operating system time zone database (Peter) to use the operating system's time zone database (Peter)
</para> </para>
</listitem> </listitem>
@ -2241,8 +2353,8 @@ current_date &lt; 2017-11-17
</para> </para>
<para> <para>
Documentions builds will now build indexes by default, unless Unless <literal>draft</> is used, the documentation build will
<literal>draft</> is used. now be repeated if necessary to ensure the index is up-to-date.
</para> </para>
</listitem> </listitem>
@ -2311,7 +2423,8 @@ current_date &lt; 2017-11-17
<listitem> <listitem>
<para> <para>
Add tas() support for Renesas' M32R processor (Kazuhiro Inaoka) Add <function>tas()</> support for Renesas' M32R processor
(Kazuhiro Inaoka)
</para> </para>
</listitem> </listitem>
@ -2396,6 +2509,16 @@ current_date &lt; 2017-11-17
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Add <filename>contrib/dict_int</filename>,
<filename>contrib/dict_xsyn</filename>, and
<filename>contrib/test_parser</filename> modules to provide
sample add-on text search dictionary templates and parsers
(Sergey Karpov)
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Allow <application>contrib/pgbench</> to set the fillfactor (Pavan Allow <application>contrib/pgbench</> to set the fillfactor (Pavan