5 Websites to Learn SQL Online for FREE

SQL is one of the most important skill for any programmer be it a Java, C++, PHP or Ruby developer. Almost 95% of the Java applications uses relational database in their back-end and almost all web applications uses database. In recent years, one of the most common way to learn any programming skill is online, at your comfort of office or home and SQL is no different. Learning SQL online has another advantage of quick head start because you don't need to install database and create tables to write some SELECT queries. Once you start writing queries and seeing result, you feel that confidence needed to go to next level, which involves downloading and installing free copy of popular databases e.g. MySQL, SQL Server or Oracle in your machine. From my experience I can say that SQL is easy to learn but difficult to master. You can start writing SQL queries in about an hour or so, but when it comes to write queries to solve real time requirements or for reporting purpose, its not that easy. Practicing SQL online on sites like SQLZoo or SQLFiddle will help you to keep yourself up-to-date. You can also take help from some good SQL books like Head First SQL if you are beginner, head first way is one of the best way to learn SQL.

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