The top 5 languages learned: Java, followed by C, Python, C++, and JavaScript. JetBrains also asked which massive open online course platforms are the most popular.

SQL has dominated data querying for decades. Newer query languages offer more elegance, simplicity, and flexibility for modern use cases.

It found that Python, Java, SQL and JavaScript appeared the most frequently in developer job ads, each appearing in more than 50,000 listings on Indeed. All four saw a significant jump in demand ...