两表关联更新
通用方法
update test1
set name=(select name from test2 where test2.id=test1.id),
age=(select age from test2 where test2.id=test1.id)
MySql
update test1,test2
set test1.name=test2.name,test1.age=test2.age
where test1.id=test2.id
Oracle
方法一：update
UPDATE T1
SET T1.FMONEY = (select T2.FMONEY from t2 where T2.FNAME = T1.FNAME)
WHERE EXISTS(SELECT 1 FROM T2 WHERE T2.FNAME = T1.FNAME)
方法二：merge
merge into t1
using (select t2.fname,t2.fmoney from t2) t
on (t.fname = t1.fname)
when matched then
update set t1.fmoney = t.fmoney;
方法三：内联视图更新
UPDATE (
select t1.fmoney fmoney1,t2.fmoney fmoney2 from t1,t2 where t1.fname = t2.fname
)t
set fmoney1 =fmoney2;
两表关联删除
Original: https://www.cnblogs.com/qixinghaitang/p/16004573.html
Author: _~
Title: 两表关联更新、删除-七星海棠
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