completing on the previous part

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We can asking the data base yes or no questions and slowly extract the data

like

• if the first character of the username is a or not ?
• if the password is longer than 20 character or not ?
• if the first char of jeremy’s password is A OR B OR C ?

we do this to know information's that’s not printing on the screen , it’s blind!

SQL Server SUBSTRING() Function

SUBSTRING(string, start, length)

and this nice try

let’s check the version of the database

and this give us the true length in the response , so the sql version is 8

after some tries , we found the the version of the database is 8.0.03