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Commit1ba96ef

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More release note wording improvements.
1 parent7b98f6b commit1ba96ef

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‎doc/src/sgml/release.sgml

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<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.528 2007/10/19 01:56:06 momjian Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.529 2007/10/20 16:41:09 momjian Exp $ -->
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<!--
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Typical markup:
@@ -91,14 +91,13 @@ do it for earlier branch release files.
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<listitem>
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<para>
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Control over whether <literal>NULL</>s sort first or last, using
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<literal>ORDER BY ... NULLS FIRST/LAST</>
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Control over whether <literal>NULL</>s sort first or last
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</para>
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</listitem>
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<listitem>
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<para>
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Updatable cursors using <literal>UPDATE/DELETE WHERE CURRENT OF</>
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Updatable cursors
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</para>
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</listitem>
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@@ -124,17 +123,14 @@ do it for earlier branch release files.
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<listitem>
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<para>
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Numerous improvements in logging and statistics collection,
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including the ability to emit postmaster log messages in
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<acronym>CSV</> format, which can be loaded into a database
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table for analysis
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Numerous improvements in logging and statistics collection
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</para>
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</listitem>
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<listitem>
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<para>
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Support Security Service Provider Interface (SSPI) on
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authenticationfor Windows and GSSAPI
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Support Security Service Provider Interface (<acronym>SSPI</>) for
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authenticationon Windows
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</para>
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</listitem>
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<listitem>
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<para>
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Asynchronous commitoptionallows transactions to be committed
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but on-diskchanges to be delayed
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Asynchronous commit allows transactions to be committed but on-disk
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changes to be delayed
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</para>
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</listitem>
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<listitem>
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<para>
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Asynchronous commitoptionallows transactions to be committed
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but on-diskchanges to be delayed (Simon)
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Asynchronous commit allows transactions to be committed but on-disk
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changes to be delayed (Simon)
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</para>
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<para>
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</para>
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<para>
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To allow high concurrency <productname>PostgreSQL</>retains old
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versions of updated rows. Previously only <command>VACUUM</>
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could reuse space taken bydead rows. With <acronym>HOT</> dead
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rowspace can be reused at the time of <command>UPDATE</> or
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<command>INSERT</>. This allows for more consistent performance.
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<acronym>HOT</> even allows deleted row space reuse.
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<command>UPDATE</> space reuse isonly possible if no modified
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columns are indexed.
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To allow high concurrency <command>UPDATE</>creates a new tuple,
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rather than replacing the old tuple. Previously only
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<command>VACUUM</>could reuse space taken byold tuples. With
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<acronym>HOT</> dead tuplespace can be reused at the time of
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<command>UPDATE</> or <command>INSERT</>.This allows for more
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consistent performance.<acronym>HOT</> even allows deleted row
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space reuse. <acronym>HOT</> space reuse isnot possible if
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<command>UPDATE</> changes indexed columns.
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</para>
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</listitem>
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</para>
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<para>
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This is done by scanning the table and using a filter to save
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the few requested rows, rather than sorting the entire table.
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This is done by sequentially scanning the table and using a filter
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to save the few requested rows, rather than sorting the entire
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table. This is used if there is no matching index.
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</para>
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</listitem>
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<listitem>
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<para>
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Support Security Service Provider Interface (SSPI)
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authentication on Windows (Magnus)
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Support Security Service Provider Interface (<acronym>SSPI</>) for
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authentication on Windows
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</para>
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<para>
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This also adds support for the <acryonym>GSSAPI</> authentication
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<acronym>API</>.
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</para>
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</listitem>
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Allow logfile creation in CSV format (Arul Shaji, Greg Smith,
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Andrew Dunstan)
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</para>
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<para>
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The CSV file can be loaded into a database table for analysis.
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</para>
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</listitem>
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<listitem>
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<listitem>
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<para>
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Control over whether <literal>NULL</>s sort first or last, using
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<literal>ORDER BY ... NULLS FIRST/LAST</> (Teodor, Tom)
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Control over whether <literal>NULL</>s sort first or last (Teodor, Tom)
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</para>
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<para>
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The syntax is <literal>ORDER BY ... NULLS FIRST/LAST</>.
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</para>
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</listitem>
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</para>
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<para>
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This eliminates the need to reference a primary key to update or
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delete rows returned by a cursor.
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This eliminates the need to reference a primary key to
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<command>UPDATE</> or <command>DELETE</> rows returned by a cursor.
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The syntax is <literal>UPDATE/DELETE WHERE CURRENT OF</>.
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</para>
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</listitem>
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