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Letter case sensitivity in DAX, Power BI and Analysis Services 

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Power BI and Analysis Services are case-insensitive by default. Lowercase letters are identical to uppercase letters. This is mostly a good choice, but it also comes with unexpected consequences. In this video, we run through a set of queries to understand what to be aware of when working with a mixture of lowercase and uppercase strings in DAX.
Article and download: sql.bi/699689/?aff=yt
How to learn DAX: www.sqlbi.com/guides/dax/?aff=yt
The definitive guide to DAX: www.sqlbi.com/books/the-defin...

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15 фев 2021

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Комментарии : 6   
@amarnadhgunakala2901
@amarnadhgunakala2901 3 года назад
Congratulations Alberto for reaching 20k subs, Keep doing great .
@sherifffruitfly
@sherifffruitfly 3 года назад
I just became aware of this the other day - still seems like a design flaw IMO. Case: a matrix with ProductId and ProductName as row headers, and a CountRows measure as values. Data: ProductId is unique, but somebody entered two ProductNames for one of them, differing only in case. Result: the matrix displays a 2 (row count value) for that ProductId, but when you drill down to the ProductName, only 1 appears. Before I realized the case issue, I went into Power Query and added a Remove Duplicates step to the query. Same dissonant outcome with the matrix. That is, Power Query IS case sensitive. Conclusion: I don't much care WHICH choice they make on string case identity, but I do think DAX and Power Query should make the SAME choice.
@SQLBI
@SQLBI 3 года назад
While we could entirely agree, the history of backward compatibility says that this is not going to change anytime soon...
@DIGITAL_COOKING
@DIGITAL_COOKING 3 года назад
tough channel with great content
@Bharath_PBI
@Bharath_PBI 3 года назад
Thank you 👍
@SVKolomiets
@SVKolomiets 3 года назад
Thank you very much, Alberto, for an interesting post.
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