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Further release-note editorialization.

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This commit is contained in:
Tom Lane 2006-10-21 18:41:53 +00:00
parent 425417d498
commit 890ce3975e
1 changed files with 55 additions and 61 deletions
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116
doc/src/sgml/release.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.478 2006/10/21 18:15:44 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.479 2006/10/21 18:41:53 tgl Exp $ -->
<!--
Typical markup:
@ -279,7 +279,7 @@ links to the main documentation.
<para>
This changes the previous behavior where concatenation
would adjust the lower array dimensions.
would modify the array lower bound.
</para>
</listitem>
@ -459,19 +459,26 @@ links to the main documentation.
<listitem>
<para>
Improve efficiency of <link
linkend="functions-comparisons"><literal>IN</>
(list-of-expressions)</link> clauses (Tom)
Allow the planner to reorder <link linkend="queries-join">outer
joins</link> in some circumstances (Tom)
</para>
<para>
In previous releases, outer joins would always be evaluated in
the order written in the query. This change allows the
query optimizer to consider reordering outer joins, in cases where
it can determine that the join order can be changed without
altering the meaning of the query. This can make a
considerable performance difference for queries involving
multiple outer joins or mixed inner and outer joins.
</para>
</listitem>
<listitem>
<para>
Increase default values for <link
linkend="guc-shared-buffers"><varname>shared_buffers</></link>
and <link
linkend="guc-max-fsm-pages"><varname>max_fsm_pages</></link>
(Andrew)
Improve efficiency of <link
linkend="functions-comparisons"><literal>IN</>
(list-of-expressions)</link> clauses (Tom)
</para>
</listitem>
@ -503,6 +510,16 @@ links to the main documentation.
</para>
</listitem>
<listitem>
<para>
Increase default values for <link
linkend="guc-shared-buffers"><varname>shared_buffers</></link>
and <link
linkend="guc-max-fsm-pages"><varname>max_fsm_pages</></link>
(Andrew)
</para>
</listitem>
<listitem>
<para>
Improve locking performance by breaking the lock manager tables into
@ -532,28 +549,11 @@ links to the main documentation.
<listitem>
<para>
Allow the planner to reorder <link linkend="queries-join">outer
joins</link> in some circumstances (Tom)
</para>
<para>
In previous releases, outer joins would always be evaluated in
the order written in the query. This change allows the
query optimizer to consider reordering outer joins, in cases where
it can determine that the join order can be changed without
altering the meaning of the query. This can make a
considerable performance difference for queries involving
multiple outer joins or mixed inner and outer joins.
</para>
</listitem>
<listitem>
<para>
Improve the optimizer statistics used by <link
Improve the optimizer's selectivity estimates for <link
linkend="functions-like"><literal>LIKE</></link>, <link
linkend="functions-like"><literal>ILIKE</></link>, and
<link linkend="functions-posix-regexp">regular expression
operations</link> (Tom)
<link linkend="functions-posix-regexp">regular expression</link>
operations (Tom)
</para>
</listitem>
@ -1136,7 +1136,8 @@ links to the main documentation.
</para>
<para>
This allows the new table to receive matching constraints.
This allows easy copying of <literal>CHECK</> constraints to a new
table.
</para>
</listitem>
@ -1270,10 +1271,10 @@ links to the main documentation.
<para>
Previously, comments attached to databases were stored in individual
databases, making them ineffective, and there was no provision
at all for comments on roles. This change adds a new
<link
at all for comments on roles or tablespaces. This change adds a new
shared catalog <link
linkend="catalog-pg-shdescription"><structname>pg_shdescription</structname></link>
system catalog and stores comments on databases and roles therein.
and stores comments on databases, roles, and tablespaces therein.
</para>
</listitem>
@ -1628,8 +1629,14 @@ links to the main documentation.
<listitem>
<para>
Add <literal>table_name</> and <literal>table_schema</> as
trigger data (Andrew)
Add <literal>TG_table_name</> and <literal>TG_table_schema</> to
trigger parameters (Andrew)
</para>
<para>
<literal>TG_relname</> is now deprecated. Comparable
changes have been made in the trigger parameters for the other
PLs as well.
</para>
</listitem>
@ -1671,12 +1678,8 @@ links to the main documentation.
<listitem>
<para>
Add <literal>table_name</> and <literal>table_schema</> as
trigger data (Adam Sj&oslash;gren)
</para>
<para>
<literal>relname</> is kept but now deprecated.
Add <literal>table_name</> and <literal>table_schema</> to
trigger parameters (Adam Sj&oslash;gren)
</para>
</listitem>
@ -1697,14 +1700,6 @@ links to the main documentation.
</para>
</listitem>
<listitem>
<para>
Honor <link
linkend="guc-check-function-bodies"><varname>check_function_bodies</></link>
(Tom)
</para>
</listitem>
</itemizedlist>
</sect3>
@ -1715,8 +1710,15 @@ links to the main documentation.
<listitem>
<para>
Add <literal>table_name</> and <literal>table_schema</> as
trigger data (Andrew)
Named parameters are passed as ordinary variables, as well as in the
<literal>args[]</> array (Sven Suursoho)
</para>
</listitem>
<listitem>
<para>
Add <literal>table_name</> and <literal>table_schema</> to
trigger parameters (Andrew)
</para>
</listitem>
@ -1739,13 +1741,6 @@ links to the main documentation.
</para>
</listitem>
<listitem>
<para>
Add named parameters to the <literal>args[]</> array (Sven
Suursoho)
</para>
</listitem>
</itemizedlist>
</sect3>
@ -2114,8 +2109,7 @@ links to the main documentation.
<listitem>
<para>
Improve ability to relocate installs in more complex
configurations (Tom)
Improve ability to relocate installation directories (Tom)
</para>
</listitem>