SQL语句左连接带子查询

CREATE OR REPLACE VIEW FEEDBACK_VIEW AS
SELECT w.*,f1.SUBJECT ReplySubject,f1.CONTENT ReplyContent,f1.NAME ReplyName,f1.EMAIL ReplyEmail,f1.COMPANY ReplyCompany,f1.CREATETIME ReplyTime
    FROM (SELECT f.*,t.Name TypeName FROM FEEDBACK f LEFT JOIN FEEDBACK_TYPE t ON f.type=t.ID) w
    LEFT JOIN FEEDBACK f1
    ON w.ID=f1.REPLYID;