我相信这就是你想要的。

$q = new WP_Query( array(
    \'meta_query\' => array(
        \'relation\' => \'AND\',
        \'state_clause\' => array(
            \'key\' => \'state\',
            \'value\' => \'Wisconsin\',
        ),
        \'city_clause\' => array(
            \'key\' => \'city\',
            \'compare\' => \'EXISTS\',
        ), 
    ),
    \'orderby\' => array( 
        \'city_clause\' => \'ASC\',
        \'state_clause\' => \'DESC\',
    ),
) );

WP_Query