This article was originally posted here. If you meet 10 people who have been in data science for more than 5 years, chances are that all of them would know of or would have used SQL at some time in some form! Such is the extent of influence SQL has had on any thing to do with structured data. In this article, we will learn basics of SQL and focus on SQL for RDBMS. As you will see, SQL is quite e…
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