如何使用 OpenQuery 在 SQL 服务器中创建别名（IBM DB2）

Question

I use linked server to connect AS400 DB2.

For example: select query can work

select * 
from openquery([DB2], 'select t1.* from  lib.table01 t1
                       fetch first 1 rows only')

But I want to use query

Create Alias Library.T_temp For Library.T1 (MemberName)

in SQL Server.

It returned an error because it have no return rows.

As following (it will return error):

Select * from OpenQuery([DB2],' Create Alias...')

Update OpenQuery([DB2],' Create Alias...')

Is there any method to do that?

Thanks

Answer 1

Don't try..

Your openquery() is the preferred solution.

By using openquery() , the SQL statement is passed to Db2 and run there. Since you've included a fetch first 1 rows only only 1 row is returned.

the query form

select TOP 1 t1.* 
from db2.myibmi.lib.table01 t1
offset 0 rows
first first 1 row only

Will actually pull back all rows to SQL Server, then filter them on the SQL Server. (At least I know that's how it used when a WHERE clause was included. I assume TOP isn't any better)