将@Length设置为你所需要的。根据需要添加更多的sys.objects副本。

SET the @Length to what you need. Add more copies of sys.objects as necessary.

DECLARE @Length INT
SET @Length = 10000

DECLARE @RandomDigits VARCHAR(MAX)
SET @RandomDigits = ''
SELECT TOP (@Length) @RandomDigits = @RandomDigits + RIGHT(CHECKSUM(NEWID()), 1)
FROM sys.objects a, sys.objects b, sys.objects c

SELECT @RandomDigits