Forum Discussion
DATEDIFF when using Dates in a Column and using the TODAY() Function
So I feel like I've been close to finding a solution for a while, but I've been trying to write a measure that will take todays date from the TODAY() function, and subtract the date from a column already set up in a query in my data set and the end result I want to see is the amount of days in between. What I'm trying to find is essentially TODAY() - [Last Sales Stage Date] = Days between. I can't write it like that though so I was wondering if anyone has had any luck. Thanks!
-Jonathon
4 Replies
jcox wrote:
So I feel like I've been close to finding a solution for a while, but I've been trying to write a measure that will take todays date from the TODAY() function, and subtract the date from a column already set up in a query in my data set and the end result I want to see is the amount of days in between. What I'm trying to find is essentially TODAY() - [Last Sales Stage Date] = Days between. I can't write it like that though so I was wondering if anyone has had any luck. Thanks!
-Jonathon
When trying to refer a column in a measure, you have to aggregate it to get a scalar value. Something like
Days between = DATEDIFF(TODAY(),MAX('table'[Last Sales Stage Date]),DAY)You can do it without another calculated column, something like: (assuming you know for sure there are no dates today)
MeasureDaysBetween = SUMX(Table, DATEDIFF(Table[Last Sales Stage Date], TODAY(), DAY))
This will work:
(TODAY()-[Date].[Date])*1.
This will avoid errors you can get with DATEDIFF depending upon starting date being larger than end date.
jcox You have to create a Calculated COLUMN and your formula would look something like this...
Day Between COLUMN = DATEDIFF ( [Last Sales Stage Date], today(), DAY )
http://www.sqlbi.com/articles/calculated-columns-and-measures-in-dax/@smoupre's solution also works but again NOTE it has to be a COLUMN not a Measure! (you say you are trying to write a Measure)
