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Pavot
Frequent Visitor

SWITCH evaluation

As of now, experiments I realized with DAX on SSAS Level 1500, make me think that in the expression :

SWITCH(intValue,

value_1, expr1,

value_2, expr2,

...

value_N, exprN

)

the evaluation engine first evaluate all expr1, expr2, ..., exprN before selecting the correct expression to return. 

 

My questions are : does it really is the case ? Is there any workaround ?

1 ACCEPTED SOLUTION

Read all about it here. https://www.sqlbi.com/articles/optimizing-if-and-switch-expressions-using-variables/



* Matt is a Microsoft MVP (Power BI) and author of the Power BI Book Supercharge Power BI.

View solution in original post

2 REPLIES 2

Read all about it here. https://www.sqlbi.com/articles/optimizing-if-and-switch-expressions-using-variables/



* Matt is a Microsoft MVP (Power BI) and author of the Power BI Book Supercharge Power BI.

View solution in original post

Thank you, I finally found this paper this morning.

 

Anyway strange behavior.

 

Again thanks for your help.

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