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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>E.296. Release 7.4.15</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="release-7-4-16.html" title="E.295. Release 7.4.16" /><link rel="next" href="release-7-4-14.html" title="E.297. Release 7.4.14" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">E.296. Release 7.4.15</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="release-7-4-16.html" title="E.295. Release 7.4.16">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="release.html" title="Appendix E. Release Notes">Up</a></td><th width="60%" align="center">Appendix E. Release Notes</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 11.1 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="release-7-4-14.html" title="E.297. Release 7.4.14">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="RELEASE-7-4-15"><div class="titlepage"><div><div><h2 class="title" style="clear: both">E.296. Release 7.4.15</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="release-7-4-15.html#id-1.11.6.300.4">E.296.1. Migration to Version 7.4.15</a></span></dt><dt><span class="sect2"><a href="release-7-4-15.html#id-1.11.6.300.5">E.296.2. Changes</a></span></dt></dl></div><p><strong>Release date: </strong>2007-01-08</p><p>
   This release contains a variety of fixes from 7.4.14.
   For information about new features in the 7.4 major release, see
   <a class="xref" href="release-7-4.html" title="E.311. Release 7.4">Section E.311</a>.
  </p><div class="sect2" id="id-1.11.6.300.4"><div class="titlepage"><div><div><h3 class="title">E.296.1. Migration to Version 7.4.15</h3></div></div></div><p>
    A dump/restore is not required for those running 7.4.X.  However,
    if you are upgrading from a version earlier than 7.4.11,
    see <a class="xref" href="release-7-4-11.html" title="E.300. Release 7.4.11">Section E.300</a>.
   </p></div><div class="sect2" id="id-1.11.6.300.5"><div class="titlepage"><div><div><h3 class="title">E.296.2. Changes</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
      Improve handling of <code class="function">getaddrinfo()</code> on AIX (Tom)
     </p><p>
      This fixes a problem with starting the statistics collector,
      among other things.
     </p></li><li class="listitem"><p>
       Fix <span class="quote">“<span class="quote">failed to re-find parent key</span>”</span> errors in
       <code class="command">VACUUM</code> (Tom)
      </p></li><li class="listitem"><p>
       Fix bugs affecting multi-gigabyte hash indexes (Tom)
      </p></li><li class="listitem"><p>
      Fix error when constructing an <code class="literal">ARRAY[]</code> made up of multiple
      empty elements (Tom)
     </p></li><li class="listitem"><p>
      <code class="function">to_number()</code> and <code class="function">to_char(numeric)</code>
      are now <code class="literal">STABLE</code>, not <code class="literal">IMMUTABLE</code>, for
      new <span class="application">initdb</span> installs (Tom)
     </p><p>
      This is because <code class="varname">lc_numeric</code> can potentially
      change the output of these functions.
     </p></li><li class="listitem"><p>
      Improve index usage of regular expressions that use parentheses (Tom)
     </p><p>
      This improves <span class="application">psql</span> <code class="literal">\d</code> performance also.
     </p></li></ul></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="release-7-4-16.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="release.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="release-7-4-14.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">E.295. Release 7.4.16 </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> E.297. Release 7.4.14</td></tr></table></div></body></html>