DECLARE @s1 varchar(40);

      SET     @s1 =   'Learn T-SQL ';
      SET     @s1 +=  'with Simple Samples.';

      PRINT @s1;

      
 ---- output 
      Learn T-SQL with Simple Samples.

      SELECT (Name + ', ' + Country) AS Name
      FROM EMP where Salary = 6000
      
 ---- output 
      Vijay, India