I've been a senior data engineer, architect and database programmer for more than 15 years, working at top organizations like Expedia, Microsoft, T-Mobile, and the Gates Foundation. And it’s hard to get that experience unless you have the job. In other words, it’s hard to get a data related job unless you have experience with SQL and other data tools. It’s a “which came first: the chicken or the egg?” issue. They just didn’t have the experience they needed to figure out how to handle a data problem. The applicants were intelligent people, who had studied hard and had “book knowledge” on databases and SQL.īut when they were presented with a real-world problem, they had a very hard time. However, when I asked them to solve data problems by writing SQL, they couldn’t do it! And these weren’t hard problems-they were just a step above beginner level. Most applicants rated themselves at 9 or 10. Applicants were asked to rank themselves on their SQL knowledge, on a scale of 1-10, with 10 being the highest (SQL expert). When I worked at Expedia, I regularly interviewed people for jobs as database developers and data engineers.
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