SQL

SQL remains one of the highest-demand skills, used daily by 57% of developers—more than #5 JavaScript’s 67% but surpassing #6 Kotlin’s 30% usage rate among mobile developers. Modern enhancements like window functions, CTEs, and JSON support in PostgreSQL 16+ make it drastically more powerful than its reputation suggests, executing complex transformations 40% faster than Python-based Pandas. Any data-driven role demands SQL proficiency.