Ticket #22967: 22967.patch

wp-includes/meta.php

@@ -717 +717 @@
                 // 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 ( ! isset( $q['value'] ) && ! empty( $q['key'] ) )
+                                if ( ! array_key_exists( 'value', $q ) && ! empty( $q['key'] ) )
                                         $key_only_queries[$k] = $q;
                                 else
                                         $queries[$k] = $q;
@@ -743 +743 @@
                         elseif ( ! in_array( $meta_type, array( 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED' ) ) )
                                 $meta_type = 'CHAR';
 
+                        if ( array_key_exists( 'value', $q ) && is_null( $q['value'] ) )
+                                $q['value'] = '';
+
                         $meta_value = isset( $q['value'] ) ? $q['value'] : null;
 
                         if ( isset( $q['compare'] ) )