The TIOBE Index is an indicator of which programming languages are most popular within a given month. According to the TIOBE ...

5 Computer Science Languages to Learn Five useful computer science languages to learn include Python, C++, Java, JavaScript and SQL.

Developers often dispute the merits of SQL as a legitimate programming language, but this misses the point. SQL is a powerful 4GL for accessing data.

Open source logic programming language compiles to SQL and runs on Google BigQuery, with experimental support for PostgreSQL and SQLite.