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I have a table that looks like: 

id     aff1    aff2    aff3    value

1       a        x      b        5

2       b        c      x        4

3       a        b      g        1

I would like to aggregate the aff columns to calculate the sum of "value" for each aff. For example, the above gives: 

aff    sum

a       6

b       10

c       4

g       1

x       9

Ideally, I'd like to do this directly in tableau without remaking the table by unfolding it along all the aff columns. 

1 Answer

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by (47.2k points)

Tableau’s inbuilt pivot method can be as below, without reshaping in the source .

  • Click on CTRL and  Select all 3 dimensions you want to merge, and click on 'pivot'.

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  • As are result, you will get your new reshaped data as below, delete other columns :

enter image description here

  • Finally, build your view.

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  • I hope this answers everything. Rest other options for the above results include JOIN at DB level or creating multiple calculated fields for each attribute value which are not scalable.

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