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jatneerjat
Helper V
Helper V

Max(Date) vs Lastdate(Date): which one should use for better performance

Hi,

 

As i am working on improving performance of measures, which function should i use to get the latest date from a date table?

 

Max(Date) or LastDate(Date)

 

Thanks

1 ACCEPTED SOLUTION
Stachu
Community Champion
Community Champion

in this article there is a short paragraph about the 2
https://www.sqlbi.com/articles/semi-additive-measures-in-dax/


basically LASTDATE returns a table of one column and one row, while MAX returns scalar value
accoriding to the article this code is equivalent to LASTDATE

        FILTER (
            ALL( 'Date'[Date] ), 
            'Date'[Date] = MAX ( 'Date'[Date] )
        )

so to answer your question if you need a scalar I'd use MAX

on optimization in general - I recommend watching this video and in avoiding iterator functions on full tables if possible
https://www.sqlbi.com/tv/optimizing-dax-queries/



Did I answer your question? Mark my post as a solution!
Thank you for the kudos 🙂

View solution in original post

2 REPLIES 2
v-piga-msft
Resident Rockstar
Resident Rockstar

Hi @jatneerjat,

 

Have you solved your problem?

 

If you have solved, please accept the replies making sense as solution to your question so that people who may have the same question can get the solution directly.

 

Best  Regards,

Cherry

Community Support Team _ Cherry Gao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Stachu
Community Champion
Community Champion

in this article there is a short paragraph about the 2
https://www.sqlbi.com/articles/semi-additive-measures-in-dax/


basically LASTDATE returns a table of one column and one row, while MAX returns scalar value
accoriding to the article this code is equivalent to LASTDATE

        FILTER (
            ALL( 'Date'[Date] ), 
            'Date'[Date] = MAX ( 'Date'[Date] )
        )

so to answer your question if you need a scalar I'd use MAX

on optimization in general - I recommend watching this video and in avoiding iterator functions on full tables if possible
https://www.sqlbi.com/tv/optimizing-dax-queries/



Did I answer your question? Mark my post as a solution!
Thank you for the kudos 🙂

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