实例解析：将count(*)值写入另一个表中

use db1
go
create table t1(
Item   varchar(100),
Prov   varchar(100),
Qty    int);
insert into t1(item,prov,qty)
   select '原名','xx省',
(select count(*) 
from updata where id='A0101');

use db2
go
create table t2(
Item   varchar(100),
Prov   varchar(100),
Qty    int);
INSERT   INTO  t2(item,prov,qty) 
select '原名',
'xx省',
(select count(*)
FROM OPENDATASOURCE('SQLOLEDB', 
'Data Source=YY\IIDC;
User ID=sa;
Password=password').
db1.dbo.updata where
culindexid='A0101')