How (not) to break Power BI Query folding by changing data types!

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Changing data types is one of the most common transformations in Power Query/Power BI. Learn how one subtle difference can (not) prevent the query from folding, and consequentially have a huge impact on your Power BI report performance!

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Really useful, i'd always wondered why sometimes the total rows imported were way in excess of the final number.

nickcorbin
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