Tables, Numbers, Immutability And Power Query Performance

Following on from my last two posts on Power Query performance, I thought I would write about another trick that can make a big difference to your query execution times. It’s actually something that Ehren from the dev team mentioned in a forums thread that I blogged about here but it deserves to be better known.

Source : Chris Webb’s BI Blog
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Removing HTML Tags From Text In Power Query/Power BI

Recently I found I needed to remove all the HTML tags from some text in Power Query. I searched and found a great – if complex – function from Marcel Beug here, but I realised that since that post was written the Html.Table M function has been added to the language and that it makes the task very easy. In fact it’s basically the same as the solution I blogged about here for extracting URLs from a web page.

Source : Chris Webb’s BI Blog
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Find and Delete Duplicate Photos with Power Query

I was trying to clean up my hard disk drive on my PC the other day. I use a program called WinDirStat to show me graphically what is taking space (as an aside, this is great software and you can download it here). After running the software I noticed that I had stored photos from my phone in a few different places. Each of the 3 sections below are images from my phone stored in different locations.

Source : Excelerator BI
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Converting Decimal Numbers To Hexadecimal In Power Query M

This is a very short post! A lot of people have blogged about how to convert numbers between different bases in M (see for example Maxim Zelensky’s very elegant solution for converting from binary to decimal), but today I noticed there was a very easy way to convert a decimal number to hexadecimal using the Number.ToText() function: you just need to use “x” in the second parameter.

Bron : Chris Webb’s BI Blog
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