One of many cool things about Power Query is the way that it allows you to retrieve data from web services and load it into Excel. While this is a subject that lots of people (including me) have already blogged about, the Web.Contents() function – which is the M function that you’ll need to use to call a web service in your query – has gained some new, useful functionality over the last few releases that isn’t fully documented anywhere and which is important to know about.
For this post I’ll use a real-life example of a web service that I’ve been working with recently. As you may know, I’m one of the organisers of SQLBits and a few weeks ago I was given the task of building a Power BI solution to monitor registrations. SQLBits uses RegOnline to handle registrations and they have an API that allows developers…
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