Question

我有一个calculated_sql，它返回2806行，并在每页50个结果的表上显示。该calculated_sql由复杂的联接，参数（使该表中的搜索可用）和一个来自客户端的请求所组成。

此calculated_sql加载大约需要1分钟。

是否有任何方法可以提高加载此表的性能？

select c.candidate_id as candidate_id,
c.form_timestamp as form_timestamp, 
c.name as name, 
c.phone as phone, 
c.email as email, 
c.location as location, 
c.canal as canal,
c.tipo as tipo, 
cc.contact_id as contact_id, 
cc.contact_date as contact_date, 
cc.contact_owner as contact_owner, 
cc.status_id as status_id, 
cc.status_desc as status_desc,
CONCAT (ifnull(c.form_timestamp, ''), ifnull(c.candidate_id,''), ifnull(c.name,''), ifnull(c.phone,''), ifnull(c.email,''), ifnull(c.location,''), ifnull(c.canal,''), ifnull(c.tipo,''),ifnull(cc.contact_id,''), ifnull(cc.contact_date,''), ifnull(cc.contact_owner,''), ifnull(cc.status_id,''), ifnull(cc.status_desc,'')) as ConcatAll
from candidate c
  left join candidate_contacts cc
    on c.candidate_id = cc.candidate_id
   and (cc.contact_id is null or cc.contact_id in (select ccc.contact_id from candidate_contacts ccc where ccc.contact_id in (select max(contact_id) from candidate_contacts where candidate_id = c.candidate_id)))
 where ((c.last_status_id_contact is null and c.last_status_id_interview is null and c.last_status_id_recruit is null)
        or (c.last_status_id_contact is not null and c.last_status_id_contact in (select cs.status_id from contact_status cs where cs.action like ('REMAIN'))))
   and (c.last_status_id_interview in (select iss.status_id from interview_status iss where iss.action like ('RB2')) or (c.last_status_id_interview is null)) 
and (
       (c.name like concat(CONCAT("%", ifnull(:concatAll,''), "%")))                                                                                                                                       
   or  (c.phone like concat(CONCAT("%", ifnull(:concatAll,''), "%")))
   or  (c.location like concat(CONCAT("%", ifnull(:concatAll,''), "%")))                                
   or  (c.canal like concat(CONCAT("%", ifnull(:concatAll,''), "%")))                                
   or  (c.tipo like concat(CONCAT("%", ifnull(:concatAll,''), "%")))                                
   or  (cc.contact_date like concat(CONCAT("%", ifnull(:concatAll,''), "%")))                                                                                                      
   or  (cc.contact_owner like  concat(CONCAT("%", ifnull(:concatAll,''), "%")))                                                                                                      
   or  (cc.status_desc like concat(CONCAT("%", ifnull(:concatAll,''), "%")))
   or  (c.form_timestamp like concat(CONCAT("%", ifnull(:concatAll,''), "%"))) 
   ) order by 2 desc;

AppMaker Calculated_SQL性能

0 个答案: