SQL跨数据库更新

UPDATE b

SET b.Com_introduce = a.company_intro --这里改改

FROM australia.dbo.companytest as a, yimingong.dbo.company as b

WHERE

(a.id = 2 AND b.Com_Id = 1) OR

(a.id = 14 AND b.Com_Id = 2) OR

(a.id = 18 AND b.Com_Id = 3) OR

(a.id = 5 AND b.Com_Id = 4) OR

(a.id = 16 AND b.Com_Id = 5) OR

(a.id = 18 AND b.Com_Id = 6) OR

(a.id = 15 AND b.Com_Id = 7) OR

(a.id = 4 AND b.Com_Id = 8) OR

(a.id = 3 AND b.Com_Id = 9) OR

(a.id = 12 AND b.Com_Id = 10) OR

(a.id = 6 AND b.Com_Id = 11) OR

(a.id = 8 AND b.Com_Id = 12) OR

(a.id = 11 AND b.Com_Id = 13) OR

(a.id = 10 AND b.Com_Id = 14) OR

(a.id = 9 AND b.Com_Id = 15) OR

(a.id = 7 AND b.Com_Id = 16) OR

(a.id = 19 AND b.Com_Id = 17) OR

(a.id = 20 AND b.Com_Id = 19) OR

(a.id = 21 AND b.Com_Id = 20) OR

(a.id = 22 AND b.Com_Id = 21)

你就像同一个库中的2个表那样写语句就可以了,只不过要注意的地方就是表名前要增加库名来引用,如: "库名.dbo.表名"的形式:

插入:

insert into text2.dbo.sp_qwe

select * from text1.dbo.sp_qwe where 查询条件

更新:

update t1

set t1.要更新的字段=t2.同名的字段

from text2.dbo.sp_qwe t1,text1.dbo.sp_qwe t2

where t1.关联字段=t2.关联字段

sql 两个数据库之间怎么更新数据

--<a href="" target="_blank" class="baidu-highlight">触发器</a>可以，通过数据库2中的表B更新数据库1中的表A。

create trigger tgr_update

on 数据库2.dbo.B

for update

as

begin

update 数据库1.dbo.A set 数据库1.dbo.A.字段='值' from inserted where 数据库1.dbo.A.字段=inserted.字段

end

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