DECLARE @s varchar(1000)
SELECT @s = case
WHEN
("Check some Settings")
THEN
'BACKUP DATABASE [DB] TO DISK = ''C:SQL BackupBackup.dat'' WITH  COMPRESSION, NOFORMAT, NOINIT, SKIP, REWIND, NOUNLOAD, STATS = 10'
ELSE
'BACKUP DATABASE [DB] TO DISK = ''C:SQL BackupBackup.dat'' WITH  NOFORMAT, NOINIT, SKIP, REWIND, NOUNLOAD, STATS = 10;'
END
EXEC (@s)