The popularity of SQL is not really surprising given the amount of data which is collected and churned out by thousands of businesses every single day. That said, it’s only possible to make sense of big data if you have the right skillset. Data scientists rely heavily on SQL skills which is why SQL as a skill is in such high demand. Interestingly, in the 2019 edition of of the Global Technical Hiring and Skills Report, SQL was the #1 IT most developers got tested regardless of their focus.
Other studies also find SQL to be a critical IT skill. According to data from Burning Glass (via Dice), SQL was also the #1 most requested skill as of February 2020.”