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<title>[27689] trunk: When using `meta_query` in a `WP_Query`, passing `NOT EXISTS` or `''` to `compare` should not require `value` to be set.</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/27689">27689</a></dd>
<dt>Author</dt> <dd>wonderboymusic</dd>
<dt>Date</dt> <dd>2014-03-24 19:56:54 +0000 (Mon, 24 Mar 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>When using `meta_query` in a `WP_Query`, passing `NOT EXISTS` or `''` to `compare` should not require `value` to be set. The resulting SQL should then produce the appropriate `OR` clause for existence of non-existence after passing the query to the `$key_only_queries` stack internally.
Adds unit tests.
Props chrisguitarguy, for the original patch.
Fixes <a href="http://core.trac.wordpress.org/ticket/23268">#23268</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesmetaphp">trunk/src/wp-includes/meta.php</a></li>
<li><a href="#trunktestsphpunittestsmetaqueryphp">trunk/tests/phpunit/tests/meta/query.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesmetaphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/meta.php (27688 => 27689)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/meta.php 2014-03-24 19:15:32 UTC (rev 27688)
+++ trunk/src/wp-includes/meta.php 2014-03-24 19:56:54 UTC (rev 27689)
</span><span class="lines">@@ -753,7 +753,7 @@
</span><span class="cx"> // Split out the meta_key only queries (we can only do this for OR)
</span><span class="cx"> if ( 'OR' == $this->relation ) {
</span><span class="cx"> foreach ( $this->queries as $k => $q ) {
</span><del>- if ( ! array_key_exists( 'value', $q ) && ! empty( $q['key'] ) )
</del><ins>+ if ( ( empty( $q['compare'] ) || 'NOT EXISTS' != $q['compare'] ) && ! array_key_exists( 'value', $q ) && ! empty( $q['key'] ) )
</ins><span class="cx"> $key_only_queries[$k] = $q;
</span><span class="cx"> else
</span><span class="cx"> $queries[$k] = $q;
</span></span></pre></div>
<a id="trunktestsphpunittestsmetaqueryphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/phpunit/tests/meta/query.php (27688 => 27689)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/tests/meta/query.php 2014-03-24 19:15:32 UTC (rev 27688)
+++ trunk/tests/phpunit/tests/meta/query.php 2014-03-24 19:56:54 UTC (rev 27689)
</span><span class="lines">@@ -152,4 +152,46 @@
</span><span class="cx">
</span><span class="cx"> $this->assertEquals( 'CHAR', $query->get_cast_for_type( 'ANYTHING ELSE' ) );
</span><span class="cx"> }
</span><ins>+
+ function test_not_exists() {
+ global $wpdb;
+
+ $query = new WP_Meta_Query( array(
+ 'relation' => 'OR',
+ array(
+ 'key' => 'exclude',
+ 'compare' => 'NOT EXISTS'
+ ),
+ array(
+ 'key' => 'exclude',
+ 'compare' => '!=',
+ 'value' => '1'
+ ),
+ ) );
+
+ $sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
+ $this->assertNotContains( "{$wpdb->postmeta}.meta_key = 'exclude'\nOR", $sql['where'] );
+ $this->assertContains( "{$wpdb->postmeta}.post_id IS NULL", $sql['where'] );
+ }
+
+ function test_empty_compare() {
+ global $wpdb;
+
+ $query = new WP_Meta_Query( array(
+ 'relation' => 'OR',
+ array(
+ 'key' => 'exclude',
+ 'compare' => ''
+ ),
+ array(
+ 'key' => 'exclude',
+ 'compare' => '!=',
+ 'value' => '1'
+ ),
+ ) );
+
+ $sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );
+ $this->assertContains( "{$wpdb->postmeta}.meta_key = 'exclude'\nOR", $sql['where'] );
+ $this->assertNotContains( "{$wpdb->postmeta}.post_id IS NULL", $sql['where'] );
+ }
</ins><span class="cx"> }
</span></span></pre>
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