Flag if any dates in 5 separate columns are within 60 days of each other (disregarding duplicates)

[alya1]

Hello,

I have table such as below: 

Start Date	Date 1	Date 2	Date 3	Date 4	Date 5	Product ID
1/1/20			1/3/20	1/3/20		1
5/5/20		9/9/23			5/20/24	2
8/8/20	1/1/24		2/1/24			3
11/11/20		5/20/24		6/1/24	6/1/24	4
5/6/20	5/6/24	1/10/25	2/1/25			5

with many more rows.

Does anyone know how to flag a row where the dates in columns Date 1 - Date 5 (disregarding Start Date) are within 60 days of each other (disregarding duplicate dates)? 

Goal:

Start Date	Date 1	Date 2	Date 3	Date 4	Date 5	Product ID	Flag
1/1/20			1/3/20	1/3/20		1	no
5/5/20		9/9/23			5/20/24	2	no
8/8/20	1/1/24		2/1/24			3	yes
11/11/20		5/20/24		6/1/24	6/1/24	4	yes
5/6/20	5/6/24	1/10/25	2/1/25			5	yes

Thank you so much!

[ryan_mayu]

why we flag no for the first row? is that because the dates are duplicated?

maybe you can try this

select startdate and product id columns, then unpivot other columns

then create a column

Column =

VAR _min=CALCULATE(min('Table'[Value]),ALLEXCEPT('Table','Table'[Product ID]))

var _max=CALCULATE(max('Table'[Value]),ALLEXCEPT('Table','Table'[Product ID]))

return if(_max=_min,"no",if(DATEDIFF(_min,_max,DAY)<60,"yes","no"))

pls see the attachment below

[alya1]

I am trying to use your new column as inspiration and came up with the following. However, everything is yes, perhaps due to blanks? Would you have any idea on how to improve it please?

SWITCH(

    TRUE(),

    DATEDIFF(date 1,date 2,DAY)<60, "yes",

    DATEDIFF(date 1,date 3,DAY)<60, "yes",

    DATEDIFF(date 1,date 4,DAY)<60, "yes",

    DATEDIFF(date 1,date 5,DAY)<60, "yes",

    DATEDIFF(date 2,date 3,DAY)<60, "yes",

    DATEDIFF(date 2,date 4,DAY)<60, "yes",

    DATEDIFF(date 2,date 5,DAY)<60, "yes",

    DATEDIFF(date 3,date 4,DAY)<60, "yes",

    DATEDIFF(date 3,date 5,DAY)<60, "yes",

    DATEDIFF(date 4,date 5,DAY)<60, "yes",

    "no"

    )

[alya1]

Hi ryan_mayu, thank you for your response! I do have a few follow ups please:

1) Yes, first row is not flaged due to duplicate; please disregard duplicates.

2) Sadly Min and Max will not work for all rows in data. I added Product ID 5 just now where there are 3 different dates across Date 1 - Date 5 columns and the middle date is wihtin 60 days of max date. I'm not sure if in the future we may have 5 different dates in all 5 columns. 

[ryan_mayu · Accepted solution]

it's better to do the data transform. pls see the workaround below