joins Tag

Joins—they are happening everywhere. That’s actually a cool tagline! And it’s definitely true. I haven’t encountered a data warehouse, a data lake or a BI tool that didn't include some sort of join somewhere.   But I also know there are a lot of explanations about...

It’s no secret that Tableau Prep is a game changer for those looking to clean, explore and connect their data sources together. There are myriad join options, from your traditional left, right and inner joins to more advanced options such as Left Unmatched Only, which...

Note: A big thank you to Carl Allchin and Jonathan Allenby for initiating the Preppin’ Data project for our community. Hunker down, folks. It’s time to prep some data. Welcome to my submission for the first week of the Preppin’ Data project. For beginners, the idea...

I rarely ever receive pristine data, and I’d wager that’s true for most of us working in data analysis or business intelligence. Data can come to us from dozens—if not hundreds—of sources, and it certainly requires some preparation to make it useful. One of the...

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