![]() SQL is listed in more than half of all DS (left) and DE (right) job roles (Data:, ) ![]() To demonstrate the importance of SQL specifically in data-related jobs, in early 2021 I analyzed more than 32,000 data jobs advertised on Indeed, looking at key skills mentioned in job ads with ‘data’ in the title. If you want to get a job in data, your focus should be the skills that employers want. Everything uses SQL or a derivative of SQL.” It’s like the SQL syntax persists through time and space. He quickly found himself using SQL daily: “SQL is so pervasive, it permeates everything here. SQL may be old, but it’s ubiquitous.ĭata Scientist and former Dataquest student Vicknesh got his first job as a Data Analyst. A quick job search on LinkedIn, for example, will show you that more companies are looking for SQL skills than are looking for Python or R skills. Even within companies like Facebook, Google, and Amazon, which have built their own high-performance database systems, data teams use SQL to query data and perform analysis.Īnd it’s not just tech companies: companies big and small use SQL. Uber, Netflix, Airbnb - the list goes on. SQL is everywhereĪlmost all of the biggest names in tech use SQL. While knowing the fundamentals of a more general-purpose language like Python or R is critical, ignoring SQL will make it much harder to get a job in data. Why not spend all your time mastering Python/R, or focusing on ‘sexier’ data skills, like Deep Learning, Scala, and Spark? Learning SQL - which can be pronounced either “sequel” or “S.Q.L.”, by the way - has been a rite of passage for programmers who need to work with databases for decades.īut why should someone who wants to get a job in data spend time learning this ‘ancient’ language in 2021? In the years since, it has been widely adopted. By the end of the decade, several prototypes of Codd’s system had been built, and a query language - the Structured Query Language (SQL) - was born to interact with these databases. SQL dates back almost 50 years to 1970 when Edgar Codd, a computer scientist working for IBM, wrote a paper describing a new system for organizing data in databases. Even then, it seemed that SQL was ancient. The computers we used were outdated, and the class was boring. I was in high school, and as part of a computing class we were working with databases in Microsoft Access. ![]() SQL is still the most popular language for data work in 2021.It’s in high demand because so many companies use it.
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