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Postgres FD Implementation
Commit 7cac3253 authored by Tom Lane's avatar Tom Lane
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Sync release notes with CVS HEAD; various editorial improvements.

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doc/src/sgml/release.sgml
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<!-- $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:
......@@ -41,7 +41,7 @@ do it for earlier branch release files.
<note>
<title>Release date</title>
<simpara>2007-12-??</simpara>
<para>CURRENT AS OF 2007-11-29</>
<para>CURRENT AS OF 2007-12-01</>
</note>
<sect2>
......@@ -380,8 +380,8 @@ current_date &lt; 2017-11-17
<listitem>
<para>
<command>ALTER SEQUENCE</> no longer affects <function>currval()</>
(Tom)
<command>ALTER SEQUENCE</> no longer affects the sequence's
<function>currval()</> state (Tom)
</para>
</listitem>
......@@ -545,6 +545,23 @@ current_date &lt; 2017-11-17
</para>
</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>
<para>
Ensure that <function>chr()</function> cannot create
......@@ -738,6 +755,19 @@ current_date &lt; 2017-11-17
</para>
</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>
<para>
Create a dedicated <acronym>WAL</> writer process to off-load
......@@ -814,6 +844,12 @@ current_date &lt; 2017-11-17
</para>
</listitem>
<listitem>
<para>
Speed up operator lookup for cases with non-exact datatype matches (Tom)
</para>
</listitem>
</itemizedlist>
</sect3>
......@@ -900,6 +936,40 @@ current_date &lt; 2017-11-17
</para>
</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>
<para>
Add new encodings EUC_JIS_2004 and SHIFT_JIS_2004 (Tatsuo)
......@@ -914,7 +984,12 @@ current_date &lt; 2017-11-17
<para>
Change server startup log message from <quote>database system is
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>
</listitem>
......@@ -995,8 +1070,8 @@ current_date &lt; 2017-11-17
</para>
<para>
CSV-format log files can be loaded into a database table for subsequent
analysis.
CSV-format log files can easily be loaded into a database table for
subsequent analysis.
</para>
</listitem>
......@@ -1066,7 +1141,7 @@ current_date &lt; 2017-11-17
<listitem>
<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)
</para>
</listitem>
......@@ -1240,15 +1315,27 @@ current_date &lt; 2017-11-17
Create a general mechanism that supports casts to and from the
standard string types (<type>TEXT</type>, <type>VARCHAR</type>,
<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>
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,
explicit-only in the other direction, and therefore should create no
surprising behavior. Various
datatype-specific casting functions that were equivalent to this
behavior were removed.
surprising behavior.
</para>
</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>
</listitem>
......@@ -1263,8 +1350,7 @@ current_date &lt; 2017-11-17
comparisons, if the data types have compatible hash functions.
Currently, cross-data-type hashing support exists for
<type>smallint</type>/<type>integer</type>/<type>bigint</type>,
and for <type>float4</type>/<type>float8</type>. XXX how do you do
hash aggregate two different data types
and for <type>float4</type>/<type>float8</type>.
</para>
</listitem>
......@@ -1360,8 +1446,8 @@ current_date &lt; 2017-11-17
<para>
This allows a user-defined type to take a modifier, like
<type>ssnum(7)</>. Previously only
predefined system data types could have modifiers.
<type>ssnum(7)</>. Previously only built-in
data types could have modifiers.
</para>
</listitem>
......@@ -1428,7 +1514,7 @@ current_date &lt; 2017-11-17
<listitem>
<para>
Implement <command>CREATE TABLE LIKE ... INCLUDING
INDEXES</command> (Trevor Hardcastle, Nikhil S, Neil)
INDEXES</command> (Trevor Hardcastle, Nikhil Sontakke, Neil)
</para>
</listitem>
......@@ -1623,7 +1709,7 @@ current_date &lt; 2017-11-17
snapshot that does not change during the transaction. This function
allows the snapshot to be discarded and a new snapshot loaded during
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>
</listitem>
......@@ -1769,6 +1855,17 @@ current_date &lt; 2017-11-17
</para>
</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>
<para>
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
loop overflows.
</para>
</listitem>
<listitem>
......@@ -1800,7 +1896,7 @@ current_date &lt; 2017-11-17
<para>
Allow type-name arguments to PL/Perl
<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>
</listitem>
......@@ -1808,14 +1904,14 @@ current_date &lt; 2017-11-17
<para>
Allow type-name arguments to PL/Python
<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>
</listitem>
<listitem>
<para>
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)
</para>
</listitem>
......@@ -1920,6 +2016,13 @@ current_date &lt; 2017-11-17
</para>
</listitem>
<listitem>
<para>
Correctly detect and report errors while reading a <literal>-f</>
input file (Peter)
</para>
</listitem>
</itemizedlist>
</sect3>
......@@ -1993,19 +2096,21 @@ current_date &lt; 2017-11-17
<listitem>
<para>
Add <application>pg_ctl</> timeout parameter (Bruce)
Add a <literal>-t</> (timeout) parameter to <application>pg_ctl</>
(Bruce)
</para>
<para>
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>
</listitem>
<listitem>
<para>
Add <application>pg_ctl</> option to control generation
of core dumps (Andrew)
Add a <application>pg_ctl</> option to control generation
of server core dumps (Andrew)
</para>
</listitem>
......@@ -2082,7 +2187,7 @@ current_date &lt; 2017-11-17
<para>
If this returns true after a failed connection attempt, a client
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
deprecated.
</para>
......@@ -2120,7 +2225,7 @@ current_date &lt; 2017-11-17
<listitem>
<para>
Make ecpg libraries export only necessary API symbols (Michael)
Make the ecpg libraries export only necessary API symbols (Michael)
</para>
</listitem>
......@@ -2147,6 +2252,13 @@ current_date &lt; 2017-11-17
</para>
</listitem>
<listitem>
<para>
Drastically reduce postmaster's memory usage when it has many child
processes (Magnus)
</para>
</listitem>
<listitem>
<para>
Allow regression tests to be started by an administrative
......@@ -2170,36 +2282,36 @@ current_date &lt; 2017-11-17
<listitem>
<para>
Allow execution of cursor commands through
<function>SPI_execute</function> (Tom)
Add cursor-related functionality in SPI (Pavel Stehule)
</para>
<para>
The macro <literal>SPI_ERROR_CURSOR</> still exists but will
never be returned.
Allow access to the cursor-related planning options, and add
<command>FETCH</>/<command>MOVE</> routines.
</para>
</listitem>
<listitem>
<para>
SPI plan pointers are now <literal>SPIPlanPtr</> instead of
<literal>void *</> (Tom)
Allow execution of cursor commands through
<function>SPI_execute</function> (Tom)
</para>
<para>
This does not break application code, but switching is
recommended to help catch simple programming mistakes.
The macro <literal>SPI_ERROR_CURSOR</> still exists but will
never be returned.
</para>
</listitem>
<listitem>
<para>
Add cursor-related functionality in SPI (Pavel Stehule)
SPI plan pointers are now declared as <literal>SPIPlanPtr</> instead of
<literal>void *</> (Tom)
</para>
<para>
Allow access to the cursor-related planning options, and add
<command>FETCH</>/<command>MOVE</> routines.
This does not break application code, but switching is
recommended to help catch simple programming mistakes.
</para>
</listitem>
......@@ -2213,16 +2325,16 @@ current_date &lt; 2017-11-17
<listitem>
<para>
Add <application>configure</> <literal>--enable-profiling</>
Add <application>configure</> option <literal>--enable-profiling</>
to enable code profiling (works only with <application>gcc</>)
(Korry Douglas and Nikhil S)
(Korry Douglas and Nikhil Sontakke)
</para>
</listitem>
<listitem>
<para>
Add <application>configure</> <literal>--with-system-tzdata</>
to use the operating system time zone database (Peter)
Add <application>configure</> option <literal>--with-system-tzdata</>
to use the operating system's time zone database (Peter)
</para>
</listitem>
......@@ -2241,8 +2353,8 @@ current_date &lt; 2017-11-17
</para>
<para>
Documentions builds will now build indexes by default, unless
<literal>draft</> is used.
Unless <literal>draft</> is used, the documentation build will
now be repeated if necessary to ensure the index is up-to-date.
</para>
</listitem>
......@@ -2311,7 +2423,8 @@ current_date &lt; 2017-11-17
<listitem>
<para>
Add tas() support for Renesas' M32R processor (Kazuhiro Inaoka)
Add <function>tas()</> support for Renesas' M32R processor
(Kazuhiro Inaoka)
</para>
</listitem>
......@@ -2396,6 +2509,16 @@ current_date &lt; 2017-11-17
</para>
</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>
<para>
Allow <application>contrib/pgbench</> to set the fillfactor (Pavan
......
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