SQL is one of the most valuable skills that every Business analyst should have and it’s very easy to find resources that can help you to gain this knowledge.
There are many resources available to learn SQL, including online tutorials, video courses, and books.
Some popular websites for learning SQL include:
- W3Schools: https://www.w3schools.com/sql/
- Codecademy: https://www.codecademy.com/learn/learn-sql
- Khan Academy: https://www.khanacademy.org/computing/computer-programming/sql
- SQLBolt: http://sqlbolt.com/
- SQL Zoo: http://sqlzoo.net/
It’s also a good idea to practice writing SQL queries on your own using a database management system such as MySQL or PostgreSQL, or by using a tool like SQLite.
You can also find free or paid online course on platforms like coursera, udemy, edx, linkedin learning and many more.
It’s recommended to practice as much as possible and try to solve real-world problems using SQL.