How to concatenate two strings in SQL Server 2005

Try this:

DECLARE @COMBINED_STRINGS AS VARCHAR(50); -- Allocate just enough length for the two strings.

SET @COMBINED_STRINGS = 'rupesh''s' + 'malviya';
SELECT @COMBINED_STRINGS; -- Print your combined strings.

Or you can put your strings into variables. Such that:

DECLARE @COMBINED_STRINGS AS VARCHAR(50),
        @STRING1 AS VARCHAR(20),
        @STRING2 AS VARCHAR(20);

SET @STRING1 = 'rupesh''s';
SET @STRING2 = 'malviya';
SET @COMBINED_STRINGS = @STRING1 + @STRING2;

SELECT @COMBINED_STRINGS; 

Output:

rupesh'smalviya

Just add a space in your string as a separator.