小编Ste*_*lla的帖子

SELECT 
    CONCAT_WS(' ',child_fname,child_sname) AS 'Child Name'
    , child_gender AS 'Gender'
    , child_dob AS 'DoB'
    , COUNT activity_name AS 'Activities name'
    , CONCAT_WS(' ', parent_title, parent_fname, parent_sname) AS 'Parent Name'
    , parent_phone AS 'Parent phone'
    , CONCAT_WS(' ', parent_address1, parent_address2, parent_town,
        parent_county parent_pcode) AS 'Parent Address',
FROM 
    Child,
    JOIN ChildActivity USING(child_id),
    JOIN Activities USING(activity_id),
    JOIN Parent USING(parent_id),
WHERE 
    activity_name='Art';

查询浏览器说我有 error near 'AS Activities name... CONCAT_WS('',...at line 4.

如何解决此错误？