Squery - SELECT * FROM accounts WHERE username username and password password: That query does NOT follow the instructions which clearly state that you should query on the username only, not the username and password. After your initial query, you should check if the result is NULL or not. IF NULL, then that means the username was not found. If not NULL then the record matched, but you still have to verify that the password Submitted by the user matches the password stored in the table for that record Squery - SELECT * FROM accounts WHERE username username and password password: That query does NOT follow the instructions which clearly state that you should query on the username only, not the username and password. After your initial query, you should check if the result is NULL or not. IF NULL, then that means the username was not found. If not NULL then the record matched, but you still have to verify that the password Submitted by the user matches the password stored in the table for that record