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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.

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Adds unit tests. 

Props chrisguitarguy, for the original patch.
Fixes #23268.



git-svn-id: https://develop.svn.wordpress.org/trunk@27689 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Scott Taylor
2014-03-24 19:56:54 +00:00
parent afde656058
commit 82ba1702df
2 changed files with 43 additions and 1 deletions
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src/wp-includes/meta.php
+1 -1
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@@ -753,7 +753,7 @@ class WP_Meta_Query {
// Split out the meta_key only queries (we can only do this for OR)
if ( 'OR' == $this->relation ) {
foreach ( $this->queries as $k => $q ) {
if ( ! array_key_exists( 'value', $q ) && ! empty( $q['key'] ) )
if ( ( empty( $q['compare'] ) || 'NOT EXISTS' != $q['compare'] ) && ! array_key_exists( 'value', $q ) && ! empty( $q['key'] ) )
$key_only_queries[$k] = $q;
else
$queries[$k] = $q;