Ticket #37922: 37922.patch

src/wp-includes/class-wp-site-query.php

@@ -35 +35 @@
         protected $sql_clauses = array(
                 'select'  => '',
                 'from'    => '',
+                'join'    => '',
                 'where'   => array(),
                 'groupby' => '',
                 'orderby' => '',
@@ -517 +518 @@
                 }
 
                 $where = implode( ' AND ', $this->sql_clauses['where'] );
+                $join = '';
 
                 $pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' );