DECLARE
@zuptest varchar(1000)
SELECT
@zuptest = (SELECT 'd:\backup\temp\zuptest_diff' + convert(varchar(2),GetDate(),108) + '.dev')
BACKUP DATABASE [zuptest] TO DISK =
@zuptest WITH DIFFERENTIAL , NOFORMAT, INIT, COMPRESSION, NAME = N'zuptest-Diff Database Backup', SKIP, NOREWIND, NOUNLOAD, STATS = 10
GO