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Release notes for 9.1alpha2
This commit is contained in:
Peter Eisentraut
@@ -1,6 +1,6 @@
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<!-- doc/src/sgml/release-9.1.sgml -->
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<!-- This is up-to-date with commits through 2010-09-01 -->
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<!-- This is up-to-date with commits through 2010-10-26 -->
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<sect1 id="release-9-1-alpha">
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<title>Release 9.1alpha1</title>
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@@ -72,8 +72,49 @@
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<listitem>
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<para>
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<emphasis>Recognize functional dependency on primary
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keys</emphasis>
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<emphasis>Add ALTER TYPE ... ADD/DROP/ALTER/RENAME ATTRIBUTE</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Support triggers on views</emphasis>
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</para>
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<para>
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This adds the SQL-standard concept of an INSTEAD OF trigger,
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which is fired instead of performing a physical
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insert/update/delete. The trigger function is passed the
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entire old and/or new rows of the view, and must figure out
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what to do to the underlying tables to implement the update.
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So this feature can be used to implement updatable views
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using trigger programming style rather than rule hacking.
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Allow WITH clauses to be attached to INSERT, UPDATE, DELETE
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statements</emphasis>
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</para>
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<para>
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This is not the hoped-for facility of using
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INSERT/UPDATE/DELETE inside a WITH, but rather the other way
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around.
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Allow new values to be added to an existing enum type</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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Recognize functional dependency on primary
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keys
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</para>
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<para>
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This allows a table's other columns to be referenced without listing
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@@ -84,7 +125,7 @@
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<listitem>
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<para>
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<emphasis>Add CREATE TABLE IF NOT EXISTS</emphasis>
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Add CREATE TABLE IF NOT EXISTS
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</para>
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</listitem>
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@@ -96,22 +137,61 @@
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<listitem>
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<para>
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<emphasis>Reduce lock levels of CREATE TRIGGER and some ALTER
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TABLE, CREATE RULE actions</emphasis>
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<emphasis>Support MergeAppend plans, to allow sorted output
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from append relations</emphasis>
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</para>
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<para>
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This eliminates the former need to sort the output of an
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Append scan when an ordered scan of an inheritance tree is
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wanted. This should be particularly useful for fast-start
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cases such as queries with LIMIT.
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add some knowledge about prefix matches to
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tsmatchsel()</emphasis>
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<emphasis>Reduce the memory requirement for large ispell dictionaries</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Replace the naive HYPOT() macro with a
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standards-conformant hypotenuse function</emphasis>
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<emphasis>Teach CLUSTER to use seqscan-and-sort when it's faster than
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indexscan</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Improve GIN indexscan cost estimation</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Performance improvements in pg_upgrade for uses with many tables</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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Reduce lock levels of CREATE TRIGGER and some ALTER
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TABLE, CREATE RULE actions
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</para>
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</listitem>
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<listitem>
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<para>
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Add some knowledge about prefix matches to
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tsmatchsel()
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</para>
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</listitem>
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<listitem>
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<para>
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Replace the naive HYPOT() macro with a
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standards-conformant hypotenuse function
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</para>
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</listitem>
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@@ -123,9 +203,9 @@
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<listitem>
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<para>
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<emphasis>Change the default value of
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Change the default value of
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<literal>standard_conforming_strings</> to
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<literal>on</></emphasis>
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<literal>on</>
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</para>
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<warning>
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<para>
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@@ -137,7 +217,7 @@
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<listitem>
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<para>
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<emphasis>Add <literal>log_file_mode</> parameter</emphasis>
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Add <literal>log_file_mode</> parameter
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</para>
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<para>
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This allows control of the file permissions set on log files created
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@@ -147,7 +227,7 @@
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<listitem>
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<para>
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<emphasis>Add <literal>restart_after_crash</> parameter</emphasis>
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Add <literal>restart_after_crash</> parameter
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</para>
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<para>
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Normally, we automatically restart after a backend crash, but in
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@@ -165,29 +245,44 @@
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<listitem>
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<para>
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<emphasis>Make EXPLAIN show the function call expression of a
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FunctionScan plan node, but only in VERBOSE mode</emphasis>
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<emphasis>Allow pg_ctl to register the service in either AUTO or DEMAND start
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type</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Make EXPLAIN print PARAM_EXEC Params as
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the referenced expressions, rather than just $N</emphasis>
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<emphasis>Support host names and host key
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word <literal>all</literal>
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in <filename>pg_hba.conf</filename></emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add vacuum and analyze counters to pg_stat_*_tables
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views</emphasis>
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Make EXPLAIN show the function call expression of a
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FunctionScan plan node, but only in VERBOSE mode
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add stats functions and views to provide access to a
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transaction's own statistics counts</emphasis>
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Make EXPLAIN print PARAM_EXEC Params as
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the referenced expressions, rather than just $N
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</para>
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</listitem>
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<listitem>
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<para>
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Add vacuum and analyze counters to pg_stat_*_tables
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views
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</para>
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</listitem>
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<listitem>
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<para>
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Add stats functions and views to provide access to a
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transaction's own statistics counts
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</para>
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</listitem>
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@@ -199,8 +294,19 @@
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<listitem>
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<para>
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<emphasis>Add server authentication over Unix-domain
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sockets</emphasis>
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<emphasis>Add SECURITY LABEL command</emphasis>
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</para>
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<para>
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This is intended as infrastructure to support integration
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with label-based mandatory access control systems such as
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SE-Linux.
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</para>
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</listitem>
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<listitem>
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<para>
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Add server authentication over Unix-domain
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sockets
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</para>
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<para>
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This adds a libpq connection parameter <literal>requirepeer</> that
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@@ -217,27 +323,36 @@
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<listitem>
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<para>
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<emphasis>Add string functions: concat(), concat_ws(), left(),
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right(), and reverse()</emphasis>
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<emphasis>Accept <literal>public</literal> as a pseudo-role
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name in <literal>has_table_privilege()</literal> and friends
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to see if a particular privilege has been granted to
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<literal>PUBLIC</literal></emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add three-parameter forms of array_to_string and
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string_to_array</emphasis>
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Add string functions: concat(), concat_ws(), left(),
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right(), and reverse()
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add XMLEXISTS function</emphasis>
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Add three-parameter forms of array_to_string and
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string_to_array
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add xpath_exists() function</emphasis>
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Add XMLEXISTS function
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</para>
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</listitem>
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<listitem>
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<para>
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Add xpath_exists() function
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</para>
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<para>
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This is equivalent to XMLEXISTS except that it offers support for
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@@ -247,9 +362,9 @@
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<listitem>
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<para>
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<emphasis>Add xml_is_well_formed, xml_is_well_formed_document,
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Add xml_is_well_formed, xml_is_well_formed_document,
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xml_is_well_formed_content functions to the core XML
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code</emphasis>
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code
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</para>
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<para>
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These supersede a version previously offered by contrib/xml2.
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@@ -264,15 +379,15 @@
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<listitem>
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<para>
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<emphasis>Allow numeric to use a more compact, 2-byte header in
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many cases</emphasis>
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Allow numeric to use a more compact, 2-byte header in
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many cases
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add support for dividing money by money (yielding a
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float8 result) and for casting between money and numeric</emphasis>
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Add support for dividing money by money (yielding a
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float8 result) and for casting between money and numeric
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</para>
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</listitem>
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@@ -284,8 +399,8 @@
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<listitem>
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<para>
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<emphasis>Add options to force quoting of all
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identifiers</emphasis>
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Add options to force quoting of all
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identifiers
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</para>
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<para>
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This includes a quote_all_identifiers parameter which affects the
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@@ -303,16 +418,16 @@
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<listitem>
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<para>
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<emphasis>Add \conninfo command to psql, to show current connection
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info</emphasis>
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Add \conninfo command to psql, to show current connection
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info
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Extend psql's \e and \ef commands so that a line number
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Extend psql's \e and \ef commands so that a line number
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can be specified, and the editor's cursor will be initially placed
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on that line</emphasis>
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on that line
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</para>
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<para>
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To avoid assumptions about what switch the user's editor takes for
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@@ -323,16 +438,16 @@
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<listitem>
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<para>
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<emphasis>Add a \sf (show function) command to psql, for those
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Add a \sf (show function) command to psql, for those
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times when you need to look at a function but don't wish to fire up
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an editor</emphasis>
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an editor
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Make psql distinguish between unique indices and unique
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constraints in \d printout</emphasis>
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Make psql distinguish between unique indices and unique
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constraints in \d printout
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</para>
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</listitem>
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@@ -346,9 +461,9 @@
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<listitem>
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<para>
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<emphasis>Modify the handling of RAISE without parameters so that
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Modify the handling of RAISE without parameters so that
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the error it throws can be caught in the same places that could
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catch an ordinary RAISE ERROR in the same location</emphasis>
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catch an ordinary RAISE ERROR in the same location
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</para>
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<para>
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The previous coding insisted on throwing the error from the block
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@@ -359,7 +474,7 @@
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<listitem>
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<para>
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<emphasis>Remove ancient PL/pgSQL line numbering hack</emphasis>
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Remove ancient PL/pgSQL line numbering hack
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</para>
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<para>
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PL/pgSQL used to count the second line of the function body as
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@@ -381,37 +496,43 @@
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<listitem>
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<para>
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<emphasis>Add the ability to compute per-statement latencies (ie,
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average execution times) to pgbench</emphasis>
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<emphasis>Updates to contrib/isn ISBN tables</emphasis>
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Teach levenshtein() about multi-byte
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characters</emphasis>
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Add the ability to compute per-statement latencies (ie,
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average execution times) to pgbench
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add btree_gist support for searching on <quote>not
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equals</quote></emphasis>
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Teach levenshtein() about multi-byte
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characters
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</para>
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</listitem>
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<listitem>
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<para>
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<emphasis>Add ssl_cipher() and ssl_version() functions to
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contrib/sslinfo</emphasis>
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Add btree_gist support for searching on <quote>not
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equals</quote>
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</para>
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</listitem>
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<listitem>
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<para>
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||||
<emphasis>Remove the arbitrary (and undocumented) limit on the
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Add ssl_cipher() and ssl_version() functions to
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contrib/sslinfo
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</para>
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</listitem>
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<listitem>
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<para>
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Remove the arbitrary (and undocumented) limit on the
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number of parameter=value pairs that can be handled by
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xslt_process()</emphasis>
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xslt_process()
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</para>
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</listitem>
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@@ -423,8 +544,8 @@
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<listitem>
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||||
<para>
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||||
<emphasis>Include the backend ID in the relpath of temporary
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relations</emphasis>
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||||
Include the backend ID in the relpath of temporary
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relations
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</para>
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<para>
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||||
This allows us to reliably remove all leftover temporary relation
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@@ -436,45 +557,45 @@
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||||
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||||
<listitem>
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||||
<para>
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||||
<emphasis>Rewrite COMMENT ON <replaceable>object</> code for better
|
||||
modularity, and add necessary locking</emphasis>
|
||||
Rewrite COMMENT ON <replaceable>object</> code for better
|
||||
modularity, and add necessary locking
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||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
<emphasis>Add a hook in ExecCheckRTPerms() for eventual use by
|
||||
external security-checking modules</emphasis>
|
||||
Add a hook in ExecCheckRTPerms() for eventual use by
|
||||
external security-checking modules
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
<emphasis>Standardize names and calling conventions of
|
||||
get_whatever_oid functions</emphasis>
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||||
Standardize names and calling conventions of
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||||
get_whatever_oid functions
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
<emphasis>Make NestLoop plan nodes pass outer-relation variables
|
||||
Make NestLoop plan nodes pass outer-relation variables
|
||||
into their inner relation using the general PARAM_EXEC executor
|
||||
parameter mechanism, rather than the ad-hoc kluge of passing the
|
||||
outer tuple down through ExecReScan</emphasis>
|
||||
outer tuple down through ExecReScan
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
<emphasis>Make details of the Numeric representation private to
|
||||
numeric.c</emphasis>
|
||||
Make details of the Numeric representation private to
|
||||
numeric.c
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
<emphasis>Suppress some compiler warnings from
|
||||
<literal>clang</></emphasis>
|
||||
Suppress some compiler warnings from
|
||||
<literal>clang</>
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
|
||||
Reference in New Issue
Block a user