Getting the start date of a week based on the date in row

[Deano478]

Hi folks,

This might be something that may not be possible in Alteryx as I've tried various approaches and had no luck but here i goes:

I have data like so in which the  category or code will never change:

Name	Category	Code	Date Inputted
Dean Test	Leave	OT	08/02/2023
Dean Test	Leave	OT	22/09/2022
Dean Test	Leave	OT	24/02/2023
Mark Test	Leave	OT	13/10/2022
Mark Test	Leave	OT	21/09/2022
Mark Test	Leave	OT	21/05/2023

And what im trying to achieve is a dynamic way to get get the first of the week for the date Inputted

[binuacs]

@Deano478 what is the expected output?

[JamesC · Accepted solution]

Assuming you'd like the Monday to be the start of the week, this formula should work:

DateTimeAdd([Date],-ToNumber(DateTimeFormat([Date], '%u'))+1,"day")

This converts the current Date field to 1-7 (Mon-Sun), then uses that to get back to Monday