create VIEW view_comment

 as 

(select w.idStr,w.content,w.userID,w.wei_id,w.createTime,'' as type FROM wei_comment_comment w)

UNION ALL

(select r.idStr,r.content,r.userID,r.reviewID wei_id,r.createTime,'' as type from review_comment r )

UNION ALL

(select i.idStr,i.content,i.userID,i.insResRepID wei_id,i.createTime,'' as type from institution_res_report_comment i)

UNION ALL

(select n.idStr,n.content,n.usrID userID,n.noticeID wei_id,n.createTime,'' as type  from notice_comment n)

UNION ALL

(select f.idStr,f.content,f.usrID userID,f.firstDiscloseID wei_id,f.createTime,'' as type  from first_disclose_comment f)