Problem Description:
There is a set within a group with start and end dates. When the end date and next start date have a gap of only one day, these dates need to be combined.
Note: In HR, these one-day gap sets can be employee leave start and end date.
Solution: For the solution, we need to create the partition of the continuous dates.
Steps:
1. Create a flag to check that the dates are continuous. This flag needs to be bi-directional for a statement/line to check only 1-day gap on either side. We will get two columns:
Continuous Flag = var _1 = DATEDIFF(Sheet1[End Date]+1 , MINX(FILTER(Sheet1, ([Start Date]=EARLIER(Sheet1[End Date])+1 )&& [Group]=EARLIER(Sheet1[Group]) ),[Start Date]),DAY) +DATEDIFF( Sheet1[Start Date] -1, maxx(FILTER(Sheet1, ( [end Date]=EARLIER(Sheet1[Start Date])-1) && [Group]=EARLIER(Sheet1[Group])) ,[End Date]),DAY)
// var _2=[Date Rank] - maxx(FILTER(Sheet1, ( [Date Rank]=EARLIER([Date Rank])-1) ) && [Group]=EARLIER(Sheet1[Group])), [Date Rank])
Var _3 = datediff(maxx(FILTER(Sheet1,[End Date]
Date
Continuous Date = MAX( MINX(FILTER(Sheet1, ([Start Date]=EARLIER(Sheet1[End Date])+1 ) && [Group]=EARLIER(Sheet1[Group]) ),[Start Date]-1)
,maxx(FILTER(Sheet1, ( [end Date]=EARLIER(Sheet1[Start Date])-1)&& [Group]=EARLIER(Sheet1[Group])) ,[End Date]+1))
2. Using the above measures to calculate Start Date:
New Start Date = Var _1 = maxx(FILTER(Sheet1,[Group] =EARLIER(Sheet1[Group]) && [Continuous Date] EARLIER([Continuous Flag])),Sheet1[Start Date])
Var _2 = minx(FILTER(Sheet1,[Group] =EARLIER(Sheet1[Group]) && [Continuous Date]
3. Calculate an End Date with help from Start Date:
New End Date = maxx(FILTER(Sheet1,[Group]=EARLIER([Group]) && [New Start Date]=EARLIER([New Start Date])),[End Date])
This is how final merged rows, look like:
Let us know what you think about these measures. Share your thoughts on different use cases of the continuous streak.
You can get all my posts at https://community.powerbi.com/t5/Data-Stories-Gallery/Blog-Analysis/m-p/1265567#M4403
You can find the file at https://community.powerbi.com/t5/Quick-Measures-Gallery/Power-BI-Continuous-Streak-One-Day-Differenc…
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