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

    [1] => Array
        (
            [sql] => select count(1) as num,gtype as nature,cat_name from ecs_types,  ecs_goods where is_on_sale=1 and is_delete=0     and molecule  in (449) and cat_id  in (0,1,2,3,4,5,19,24,32,33,34,38,41,42,43,44,45,65,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89) and ecs_goods.gtype=ecs_types.cat_id group by gtype
        )

    [2] => Array
        (
            [error] => Column 'cat_id' in where clause is ambiguous
        )

    [3] => Array
        (
            [errno] => 1052
        )

)