Blockchain technology has already revolutionized finance thanks to Bitcoin. Now it's disrupting other areas, including the realm of data protection. Learn how blockchain is now being used to authenticate backup files and keep them safe from hackers.
CREATE FUNCTION dbo.ufnCheckIDAndUSERID(@ID varchar) RETURNS bit AS BEGIN --first check if the ID is there in SQL table: IF ((SELECT count(ID) from [mydb].[dbo].[t] where ID = @ID) = 1) AND ((SELECT count(UserID) from [mydb].[dbo].[t] where ID = @ID)=1) RETURN 1 ELSE RETURN 0 END;
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