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<title>[12560] trunk/wp-admin/includes/upgrade.php:
Better duplicate option delete query.</title>
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/12560">12560</a></dd>
<dt>Author</dt> <dd>ryan</dd>
<dt>Date</dt> <dd>2009-12-28 16:25:56 +0000 (Mon, 28 Dec 2009)</dd>
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<h3>Log Message</h3>
<pre>Better duplicate option delete query. Props miqrogroove. fixes <a href="http://trac.wordpress.org/ticket/11649">#11649</a> for trunk</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpadminincludesupgradephp">trunk/wp-admin/includes/upgrade.php</a></li>
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<h3>Diff</h3>
<a id="trunkwpadminincludesupgradephp"></a>
<div class="modfile"><h4>Modified: trunk/wp-admin/includes/upgrade.php (12559 => 12560)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-admin/includes/upgrade.php 2009-12-28 00:56:41 UTC (rev 12559)
+++ trunk/wp-admin/includes/upgrade.php 2009-12-28 16:25:56 UTC (rev 12560)
</span><span class="lines">@@ -1688,11 +1688,7 @@
</span><span class="cx"> // Upgrade versions prior to 2.9
</span><span class="cx"> if ( $wp_current_db_version < 11557 ) {
</span><span class="cx"> // Delete duplicate options. Keep the option with the highest option_id.
</span><del>- $delete_options = $wpdb->get_col("SELECT o1.option_id FROM $wpdb->options AS o1 JOIN $wpdb->options AS o2 ON o2.option_name = o1.option_name AND o2.option_id > o1.option_id");
- if ( !empty($delete_options) ) {
- $delete_options = implode(',', $delete_options);
- $wpdb->query("DELETE FROM $wpdb->options WHERE option_id IN ($delete_options)");
- }
</del><ins>+ $wpdb->query("DELETE o1 FROM $wpdb->options AS o1 JOIN $wpdb->options AS o2 USING (`option_name`) WHERE o2.option_id > o1.option_id");
</ins><span class="cx">
</span><span class="cx"> // Drop the old primary key and add the new.
</span><span class="cx"> $wpdb->query("ALTER TABLE $wpdb->options DROP PRIMARY KEY, ADD PRIMARY KEY(option_id)");
</span></span></pre>
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