MySQL 批量更新数据

时间:2020-03-24
本文章向大家介绍MySQL 批量更新数据,主要包括MySQL 批量更新数据使用实例、应用技巧、基本知识点总结和需要注意事项,具有一定的参考价值,需要的朋友可以参考一下。

 

1、首先用查出来要处理的sql,准备更新用

-- 查询承租人对应的all表的guid 
select c.guid as zf_guid,al.guid as guid_all from (
select i.id,o.guid, o.renter_id as guid_info,i.orgid,info.idcard as idcard_info

from t_rental_house_oper_info_20200323 o
left join t_rental_house_info_20200323 i on o.rental_houseid=i.id
left join building_resident_info info on o.renter_id=info.guid
where o.status='1' and i.status='1' and o.renter_id is not null and info.idcard is not null
) c
left join building_resident_all al on c.orgid=al.orgid and c.idcard_info=al.idcard

效果:

 

 

 

 

2、然后,更新语句 把上面的sql结果集,当作一张表来用,我这别名为 v 的,是上面的结果集,后面再写set和where条件

-- 更新的时候把结果集当作一张表来用
update t_rental_house_oper_info_20200323 a ,(
select c.guid as zf_guid,al.guid as guid_all from (
select i.id,o.guid, o.renter_id as guid_info,i.orgid,info.idcard as idcard_info

    from t_rental_house_oper_info_20200323 o
    left join t_rental_house_info_20200323 i on o.rental_houseid=i.id
    left join building_resident_info info on o.renter_id=info.guid
where o.status='1' and i.status='1' and o.renter_id is not null and info.idcard is not null
) c
left join building_resident_all al on c.orgid=al.orgid and c.idcard_info=al.idcard
) v
set a.guid_all=v.guid_all where a.guid=v.zf_guid

效果:

  

 

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