use database with conditional statement

Question

I need to execute a script in 2 different servers having different db names but same tables and data. For this, I tried using the following statement.

if (@@servername= 'srvrA')
    begin 
        use dbA
    end
else    
begin 
        use dbB
    end

But for srvrB, it says Database dbA does not exist.

Could someone help me achieving this?

Answer 1

One more options

• Add linked servers sp_addlinkedserver

• Mapping between a login local instance and remote server sp_addlinkedsrvlogin

Something like:

sp_addlinkedserver  
  @server= N'srvrA',
  @srvproduct= N'',
  @provider= N'SQLNCLI',
  @datasrc= N'srvrA';

sp_addlinkedsrvlogin
  @rmtsrvname = 'srvrA' ,
  @useself = 'FALSE' ,
  @locallogin = 'your_local_login' ,
  @rmtuser = 'your_remote_login' ,
  @rmtpassword = 'your_password'

And then your script will look like

DECLARE @@srvname nvarchar(10) = 'srvrA'

IF (@@servername = @@srvname)
  BEGIN
    SELECT *
    FROM srvrA.dbA.your_schema.your_table
  END    
ELSE    
  BEGIN
    SELECT *
    FROM srvrB.dbB.your_schema.your_table
  END