1. 拼接成1条sql语句,可返回修改行数。
PostgreSQL的批量更新原生sql:
update person
set
name=tmp.name,
age=tmp.age,
addr=tmp.addr,
num=tmp.num,
update_time=tmp.update_time
from (
values
(1,'关羽',43,'成都',1,'2021-03-26 17:32:28'),
(2,'张飞',37,'成都',2,'2021-03-26 17:32:28'),
(3,'赵云',33,'成都',3,'2021-03-26 17:32:28'),
(4,'马超',31,'成都',4,'2021-03-26 17:32:28'),
(5,'黄忠',49,'成都',5,'2021-03-26 17:32:28')
) as
tmp(id,name,age,addr,num,update_time)
where
person.id=tmp.id
在Mybatis的xml中的sql写法:
<update id="batchUpdate">
update person
set
name=tmp.name,
age=tmp.age,
addr=tmp.addr,
num=tmp.num,
update_time=tmp.update_time
from (
values
<foreach collection="list" item="item" separator=",">
(
#{item.id},
#{item.name},
#{item.age},
#{item.addr},
#{item.num},
cast(#{item.updateTime} as timestamp)
)
</foreach>
) as
tmp(id,name,age,addr,num,update_time)
where
spares_stocktaking_detail.detail_id = temp.detail_id
</update>
其中,cast(#{item.updateTime} as timestamp)
将数据类型转为时间格式。
2. 执行多条sql语句,分号分隔。成功只返回1。
<update id="batchUpdate">
<foreach collection="list" item="item" separator=";">
update person
set
name = #{item.name},
age = #{item.age},
addr = #{item.addr},
num = #{item.num},
update_time = #{item.updateTime}
where
id = #{item.id}
</foreach>
</update>
标签:tmp,PostgreSQL,addr,update,更新,item,num,Mybatis,id
From: https://www.cnblogs.com/cralor/p/18040513