Argument data type text is invalid for argument 1 of len function.

IF HASHBYTES('SHA1', REPLICATE('A', 4000)) = HASHBYTES('SHA1', REPLICATE('A', 8000))
 PRINT 'yes.';
ELSE
 PRINT 'no.';

IF HASHBYTES('SHA1', REPLICATE(N'A', 4000)) = HASHBYTES('SHA1', REPLICATE(N'A', 8000))
 PRINT 'yes.';
ELSE
 PRINT 'no.';

IF HASHBYTES('SHA1', REPLICATE(CAST('A' AS varchar(max)), 9000)) = HASHBYTES('SHA1', REPLICATE(CAST('A' AS varchar(max)), 8000))
 PRINT 'yes.';
ELSE
 PRINT 'no.';

SELECT LEN(REPLICATE(CAST('A' AS varchar(max)), 9000));

SET CAPTIOUS_MODE ON

SET CAPTIOUS_MODE OFF