SQL

Have you heard of SQL but aren’t sure where to start? I felt the same way once. It turns out SQL is easier than most people imagine, especially if you already know your way around Excel. In this post, I’ll give you a map of SQL: the four core operations, the keywords to perform them, and enough examples to run your first queries right away. What SQL actually is SQL is not a database. I used to think it was, because of the names of database management systems like SQLite and MySQL. ...