The Best Resources to Learn SQL!

In this sql tutorial I'll provide you with a couple of SQL tutorial resources to learn SQL. These sql resources are as follows:

1) w3schools: free to use, though some basic sql knowledge is a must.
2) Khan Academy: a great place for video-based and similar interactive tutorials.
3) LearnSQL: this site has over 65 SQL courses, SQL courses are based on real life. This site also has courses on specific DBMS including MySQL server, PostgreSQL, SQL server, and more.
4) Database Dive: in-depth tutorials on sql database internals.

Enjoy the video!

If you've found yourself searching for sql tutorial for beginners, you will certainly find these sql interview questions and answers for experienced developers and DBAs interesting:

Q: Is sql injection very dangerous? How to avoid it?
A: Yes, sql injection is a very dangerous security flaw. To avoid sql injection, avoid passing user input straight to a database.

Q: How does a sql index improve sql query performance?
A: A sql index improves database performance by acting as an "index" in a book: by using a sql index your database knows how to find your data in a quick fashion. If you're after a sql indexes explained video we advise you watch one of our videos on a sql index and its performance.

Q: Explain sql in 100 seconds.
A: SQL is a programming language allowing for work with various RDBMS including mysql server, mariadb server, percona server, and others.

Q: Are sql interview questions for experienced developers and DBAs very difficult?
A: No, these sql interview questions for experienced DBAs aren't very complex for a DBA worth their salt.

Q: Explain sql joins.
A: sql joins are used to combine rows from a couple of tables in a database management system.

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