Querying a linked sql server

Question

I added a linked server, which is showing in the linked server list, but when I query it, it throws an error with the db server name.

EXEC sp_helpserver
EXE         


        

Answer 1

try Select * from openquery("aa-db-dev01",'Select * from users') ,the database connection should be defined in he linked server configuration

Answer 2

You need to remove the quote marks from around the name of the linked server. It should be like this:

Select * from openquery(aa-db-dev01,'Select * from TestDB.dbo.users')

Answer 3

You can use:

SELECT * FROM [aa-db-dev01].[TestDB].[dbo].[users];

Answer 4

The accepted answer works for me.

Also, in MSSQLMS, you can browse the tree in the Object Explorer to the table you want to query.

[Server] -> Server Objects -> Linked Servers -> [Linked server] -> Catalogs -> [Database] -> [table]

then Right click, Script Table as, SELECT To, New Query Window

And the query will be generated for you with the right FROM, which you can use in your JOIN

Answer 5

I use open query to perform this task like so:

select top 1 *
INTO [DATABASE_TO_INSERT_INTO].[dbo].[TABLE_TO_SELECT_INTO]
from openquery(
    [LINKED_SERVER_NAME],
    'select * from [DATABASE_ON_LINKED_SERVER].[dbo].[TABLE_TO_SELECT_FROM]'
)

The example above uses open query to select data from a database on a linked server into a database of your choosing.

Note: For completeness of reference, you may perform a simple select like so:

select top 1 * from openquery(
    [LINKED_SERVER_NAME],
    'select * from [DATABASE_ON_LINKED_SERVER].[dbo].[TABLE_TO_SELECT_FROM]'
)

Answer 6

If linked server name is IP address following code is true:

select * from [1.2.3.4,1433\MSSQLSERVER].test.dbo.Table1

It's just, note [] around IP address section.