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roebern
Frequent Visitor

Date table grouped by week

Hi all, 

 

I'm working with facts-table which doesn't have a date column but instead has a calendar year/week column (yyyyww). My date table has this column as well but this results in a many-to-many relationship. I would like to group my date table by week, resulting in only one row per week. 

 

How would I go about this?

 

Thanks in advance!

1 ACCEPTED SOLUTION
v-xiaotang
Community Support
Community Support

Hi @roebern 

Thanks for reaching out to us.

>>  I would like to group my date table by week, resulting in only one row per week. 

You can try this,

OnlyOneRow_PerWeek = 
var _maxPerW=CALCULATE(MAX('date'[Date]),FILTER(ALL('date'),'date'[YW]=EARLIER('date'[YW])))
return IF('date'[Date]=_maxPerW,'date'[YW])

result

vxiaotang_0-1656576654954.png

 

Best Regards,

Community Support Team _Tang

If this post helps, please consider Accept it as the solution to help the other members find it more quickly.

View solution in original post

2 REPLIES 2
v-xiaotang
Community Support
Community Support

Hi @roebern 

Thanks for reaching out to us.

>>  I would like to group my date table by week, resulting in only one row per week. 

You can try this,

OnlyOneRow_PerWeek = 
var _maxPerW=CALCULATE(MAX('date'[Date]),FILTER(ALL('date'),'date'[YW]=EARLIER('date'[YW])))
return IF('date'[Date]=_maxPerW,'date'[YW])

result

vxiaotang_0-1656576654954.png

 

Best Regards,

Community Support Team _Tang

If this post helps, please consider Accept it as the solution to help the other members find it more quickly.

johnt75
Solution Sage
Solution Sage

You could try creating a bridge table like

Year Week Table = ALLNOBLANKROW('Date'[Year Week])

and then creating relationships from the new table to your fact table and your date table. Make the relationship with the date table bidirectional.

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