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

    [1] => Array
        (
            [sql] => select * from ecs_article_cat where parent_id = 0 and cat_id in (select parent_id from ecs_article_cat where cat_id =  || cat_id in (select parent_id from ecs_article_cat where cat_id= ))
        )

    [2] => Array
        (
            [error] => You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '|| cat_id in (select parent_id from ecs_article_cat where cat_id= ))' at line 1
        )

    [3] => Array
        (
            [errno] => 1064
        )

)