The real power of SQL is joins. But not only might you want to simply query, think about grouping and group functions. For example: say you wanted to know the h

The real power of SQL is joins. But not only might you want to simply query, think about grouping and group functions. For example: say you wanted to know the highest rate of gif file creation per second between two dates, for a certain user. That’s what you could do with a simple sql query.