CONNECT VARIABLE TO AN OPENQUERY TO A LINKED SERVER ON A JOIN code example

Example 1: CONNECT VARIABLE TO AN OPENQUERY TO A LINKED SERVER ON A JOIN

EXEC sp_addlinkedserver @server='SQL2005', @srvproduct='', @provider='SQLNCLI', @datasrc='SERVER1\SQL2005'

Example 2: CONNECT VARIABLE TO AN OPENQUERY TO A LINKED SERVER ON A JOIN

exec sp_serveroption @server='myserver', @optname='rpc', @optvalue='true'
exec sp_serveroption @server='myserver', @optname='rpc out', @optvalue='true'

Example 3: CONNECT VARIABLE TO AN OPENQUERY TO A LINKED SERVER ON A JOIN

--Script : EXEC AT Command

--Script 1 : Create a linked server 
EXEC sp_addlinkedserver 'FARAWAYSERVER', 'SQL Server'

--Script 2 : Execute a simple SELECT statement on the linked server
EXEC ('SELECT TOP 10 * FROM AdventureWorksLT.SalesLT.Customer') AT [FARAWAYSERVER];
GO

--Script 3 : Executing multiple SELECT statements on linked server and getting multiple resultsets
EXEC ('SELECT TOP 10 * FROM AdventureWorksLT.SalesLT.Customer;
SELECT TOP 10 * FROM AdventureWorksLT.SalesLT.CustomerAddress;') AT [FARAWAYSERVER];
GO

--Script 4 : Execute a SELECT statement on linked serer and pass two arguments at dynamically
EXEC ('SELECT TOP 10 * FROM AdventureWorksLT.SalesLT.Customer 
WHERE CustomerID = ? AND LastName = ?', 10, 'Garza') AT [FARAWAYSERVER];
GO

--Script 5 : Execute a SELECT statement on linked serer and pass two arguments at dynamically
--by using variables
DECLARE @CustomerID AS INT
DECLARE @LastName AS VARCHAR(100)
SET @CustomerID = 10
SET @LastName = 'Garza'
EXEC ('SELECT TOP 10 * FROM AdventureWorksLT.SalesLT.Customer 
WHERE CustomerID = ? AND LastName = ?', @CustomerID, @LastName) AT [FARAWAYSERVER];
GO

--Script 6 : Execute a DDL statement on linked server
EXEC (
'USE TempDB
IF OBJECT_ID(''dbo.Table1'') IS NOT NULL
DROP TABLE dbo.Table1
CREATE TABLE dbo.Table1
(
Column1 INT
)' ) AT [FARAWAYSERVER];

--Script 7 : Once you are done with your testing, clean up created objects
EXEC (
'USE TempDB
IF OBJECT_ID(''dbo.Table1'') IS NOT NULL
DROP TABLE dbo.Table1'
) AT [FARAWAYSERVER];
EXEC sp_dropserver 'FARAWAYSERVER'

Example 4: allow a funciton to pass through a linkedserver open query in short form

DECLARE @VAR char(2)SELECT  @VAR = 'CA'EXEC MyLinkedServer.master.dbo.sp_executesql     N'SELECT * FROM pubs.dbo.authors WHERE state = @state',     N'@state char(2)',     @VAR

Example 5: allow a funciton to pass through a linkedserver open query in short form

DECLARE @TSQL varchar(8000), @VAR char(2)      SELECT  @VAR = 'CA'      SELECT  @TSQL = 'SELECT * FROM OPENQUERY(MyLinkedServer,''SELECT * FROM pubs.dbo.authors WHERE state = ''''' + @VAR + ''''''')'      EXEC (@TSQL)

Example 6: allow a funciton to pass through a linkedserver open query in short form

DECLARE @OPENQUERY nvarchar(4000), @TSQL nvarchar(4000), @LinkedServer nvarchar(4000)SET @LinkedServer = 'MyLinkedServer'SET @OPENQUERY = 'SELECT * FROM OPENQUERY('+ @LinkedServer + ','''SET @TSQL = 'SELECT au_lname, au_id FROM pubs..authors'')' EXEC (@OPENQUERY+@TSQL)

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