query_mes_ano
$meta_query = array( 'relation' => 'AND', array( 'key' => 'month', 'value' => '09', 'compare' => 'IN', ), array( 'key' => 'ano', 'value' => '2019', 'compare' => 'IN', ), );
$meta_query = array( 'relation' => 'AND', array( 'key' => 'month', 'value' => '09', 'compare' => 'IN', ), array( 'key' => 'ano', 'value' => '2019', 'compare' => 'IN', ), );