使用不同的服务器/数据库执行SQL任务

Question

Can i have my Execute SQL task look at 2 different connection manager. For Instance: I need data from ServerA/DatabaseA querying against ServerB/DatabaseB. So now i need to write a query and retrieve data from both servers. Now 2 servers are not linked server, not necessarily.

Is this even possible, let me know, please.

Answer 1

I've had to find a way to work around lack of linked servers before, and I have done something like this - Give it a try:

if object_id('tempdb..#mytemptable') is not null begin drop table #mytemptable end
select * into #mytemptable
from openrowset('SQLNCLI10','Server=TheOtherServersName;Trusted_Connection=yes;','SELECT * FROM FullyQualifiedName.dbo.MyTable')
/* Now use the temptable created on this server to do your join/subquery on whatever */
select * from MyOtherTable a
join #mytemptable b on a.id = b.id

Cheers!

Answer 2

Add a Data Flow Task with separate Data Flow Source tasks for Server A and Server B . Then join results using the appropriate Data Flow Transformation task.

As an example, this data flow takes a Flat File Source and OLEDB Source task, sorts results, then uses a Merge Join task for results. It sounds like your implementation would require two OLEDB Sources or (ODBC, ADO NET, etc.).

I like this method over the linked server or OPENROWSET , because you don't have to configure a linked server or enable Adhoc Distributed Queries on your SQL Server data sources.