update goods set code2 = (select code2 from init_goods where init_goods.code = goods.code) where exists (select 1 from init_goods where init_goods.code = goods.code) 1...
(1).update tableName set (a,b,c)=(select a,b,c from ida where ida.id=tableName.id); (2).updatetableNamet1 set a=(select t2.a from ida t2 where t1.id...
update tb_device_info di set collectorid = (select d.collector_id from tb_device d where d.id = di.deviceid ) where (select 1 from tb_device d wher...
ORACLE-SELECT学习 (一)select格式:SELECT [ ALL | DISTINCT ] ,[,…] [WHERE ] [GROUP BY <分组表...
【oracle】update select语句 【多是百度所得用于个人总结若有原著作者我就给它密了】 分类: ORACLE 好文要顶 关注我 收藏该文 乡屯米卒 粉丝- 3 关注- 2 +...
一、标准update语法(常用、速度可能最慢) 当更新的表示单个或者被更新的字段不需要关联表带过来,此法是最好的选择。 1 2 3 updatea seta.c2= (selectb.c2from b...
Oracle update select 的方法 方法1: updatetable1 settown = (selecttownfromtable2wherewwm5.id = table1.id) whereid = (selecttable2.idfromtable2whereww...
oracle中update与select关联 实现思路就是通过两个表的关联字段,之后将结果更新到另外一个表中:sql:update b set...
收录于:2023-02-03 22:10:06