<b>MySQL server error report:Array
(
    [0] => Array
        (
            [message] => MySQL Query Error
        )

    [1] => Array
        (
            [sql] => SELECT cat_id, COUNT(*) AS goods_num  FROM `s61hd`.`ecs_goods` WHERE is_delete = 0 AND is_on_sale = 1  GROUP BY cat_id
        )

    [2] => Array
        (
            [error] => Unknown column 'cat_id' in 'field list'
        )

    [3] => Array
        (
            [errno] => 1054
        )

)