How many versions of SQL are there?

Question

Between 1995 and 2016, Microsoft released 10 versions of SQL Server. The early versions were designed for departmental and workgroup applications. Microsoft expanded SQL Server's capabilities to make it an enterprise-class relational DBMS that could compete with Oracle Database, DB2, and other popular databases.

How many different SQL are there?

To get a better understanding of the main differences between four SQL dialects, here is an overview of some syntax particularities of PostgreSQL, MySQL, Microsoft SQL Server, and Standard SQL as it is used in Google BigQuery.

What are the different versions of SQL?

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

What is the latest version of SQL?

The current version is Microsoft SQL Server 2019, released November 4, 2019. The RTM version is 15.0.

Why are there many versions of SQL?

We have had several versions of an SQL standard, yet dialects and differences still exist. Why is that? Not all data storage and access problems were solved by the relational model from the outset, so SQL had to grow in order to address gaps and accommodate new ideas.

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