SQL 两表关联更新UPDATE (用一个表更新另一个表)

方法1:

UPDATE lpmgmt t1
LEFT JOIN lpmgmt_other t2 ON t2.lpmgmt_id = t1.id 
SET t1.lpEntityType2 = t2.lpEntityType2 

方法2:

update table1 set field1=table2.field1 from table2
where table1.id=table2.id

方法3:

update table1
set field1=(select top 1 field1 from table2 where table2.id=table1.id)
where table1.id in (condition)
原文地址:https://www.cnblogs.com/liudandandear/p/15506921.html