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Rearrange "big features" section of the release notes.
Josh Berkus
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doc/src/sgml/release-9.0.sgml

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<!-- $PostgreSQL: pgsql/doc/src/sgml/release-9.0.sgml,v 2.44 2010/07/29 21:18:11 tgl Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/release-9.0.sgml,v 2.45 2010/08/06 17:56:43 rhaas Exp $ -->
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<sect1 id="release-9-0">
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<title>Release 9.0</title>
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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 support for compiling on <link
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linkend="install-win32-full">64-bit
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<productname>Windows</></link> and running in 64-bit
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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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Broadly enhanced stored procedure support.
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</para>
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</listitem>
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<listitem>
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<para>
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More advanced reporting queries with additional windowing functions
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(PRECEDING and FOLLOWING) and the ability to ORDER BY inside aggregate
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functions.
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</para>
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</listitem>
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<listitem>
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<para>
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Triggers now support two new features,
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<listitem>
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<para>
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Exclusion constraints let database designers define uniqueness
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based on complex criteria, including for non-scalar data such
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as time periods, ranges and arrays.
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New and enhanced security features, including RADIUS authentication,
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LDAP authentication improvements, and the new checkpassword optional module
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for testing password strength.
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</para>
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</listitem>
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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 <link linkend="pgupgrade"><filename>/contrib/pg_upgrade</></link>
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to support in-place upgrades from 8.3 or 8.4 to 9.0.
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</para>
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</listitem>
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<listitem>
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<para>
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Multiple performance enhancements for specific types of queries,
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including join elimination, which optimizes automatically generated
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queries, such as those produced by object-relational mappers (ORMs).
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</para>
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</listitem>
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<listitem>
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<para>
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Exclusion constraints let database designers define uniqueness
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based on complex criteria, including for non-scalar data such
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as time periods, ranges and arrays.
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</para>
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</listitem>
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<listitem>
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<para>
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As part of our decade-long effort to eliminate the pain of VACUUM,
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<command>VACUUM FULL</> is now substantially faster by
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<command>VACUUM FULL</> is not substantially faster by
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rewriting the entire table and
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indexes, rather than moving around single rows to compact space.
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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 support for compiling on <link
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linkend="install-win32-full">64-bit
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<productname>Windows</></link> and running in 64-bit
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mode.
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EXPLAIN plans are now available in JSON, XML and YAML format, and include
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buffer utilization and other data not previously available.
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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 <link linkend="pgupgrade"><filename>/contrib/pg_upgrade</></link>
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to support in-place upgrades from 8.3 or 8.4 to 9.0.
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The HStore optional module has been improved with new functions and greater
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data capacity to make it a high-performance key-value store.
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</para>
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</listitem>
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