Are all SQL the same?

Are SQL queries same for all databases?

For Relational Database Management System, SQL is just like same for all applications where as still there are few differences in SQL functions like "Decode", etc.

Is there any difference between SQL and MySQL?

SQL is a query programming language that manages RDBMS. MySQL is a relational database management system that uses SQL. SQL is primarily used to query and operate database systems. MySQL allows you to handle, store, modify and delete data and store data in an organized way.

What are different SQL versions?

There are five editions of SQL Server: Standard, Web, Enterprise, Developer, and Express.

Why are there different kinds of SQL?

However, new variations kept appearing as database implementers working at different vendors needed to solve new problems or circumvent already existing problems that were not addressed in the standard. This explains why a multiple of SQL dialects made their apparition and still co-exist today.