Is there an "IF EXISTS" test for a linked server?

Question

I want to be able to programmatically (in T-SQL) check if a specific linked server already exists for my current server and database (so that if the link doesn't exist yet, I can create it). I tried stuff like this:

IF OBJECT_ID('myserver\devdb_1') IS NULL BEGIN   PRINT 'Does not exist, need to create link'   EXEC master.dbo.sp_addlinkedserver @server = N'myserver\devdb_1',                                       @srvproduct=N'SQL Server' END ELSE   PRINT 'Link already exists' 

But the OBJECT_ID test always returns null, even if the link already exists. Any way to do this check in T-SQL, so that the rest of my code can assume the link always exists?

Answer 1

Check in sys.servers:

if not exists(select * from sys.servers where name = N'myserver\devdb_1') 

Answer 2

IF NOT EXISTS ( SELECT TOP (1) * FROM sysservers WHERE srvname = 'myserver\devdb_1' )