Archive for the ‘filtering’ Category

3 More Joins You Should Be Familiar With

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There are many ways to JOIN data from two database tables and filter the information you require. Craig Buckler wrote a popular piece on understanding JOINs; namely INNER, LEFT, RIGHT, and FULL OUTER. This article is an extension of that one. Let’s r...

Using the RulerZ Rule Engine to Smarten up Playlist Building

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I can give iTunes a few rules, and it will update the list of playlist tracks based on those rules, without me having to think about how it is doing that. But how does it do this? How does it build my simple rules into a filter for tracks? When I tell...