Havij is a script kiddie tool just like Pangolin is, except Havij is more widely used by script kiddies especially in the middle east. A pro tool, which can do a lot more, but is also a lot harder to use is sqlmap.
However, using a tool only, without knowing what causes SQL Injection, how to fix it (in the code!) and how to test manually will not teach you anything, and thus you will always be a script kiddie unless you know the cause, remediation and how to test all types of SQL Injection vulnerabilities manually.
Sometimes the tools simply won't work, and then you have to test manually as a penetration tester.
Yup your totally right but I was at the middle of penetration testing and I had no time to see what sql injection is how to work with sqlmap and so on. But now l am learning some other pentesting lessons I WILL LEARN sql injection after that thank you