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i have aggr(concat(SomeField&'||')&SomeOtherField,columnX)
witch gives me many concatenated valus for the Somefield with one value of the SomeOtherField, and it works perfectly !
Now i want to get ONLY the row witch have the max(SomeOtherField) but i don't know how !
You can use Set Analysis in conjunction with AGGR. Here is a great post https://community.qlik.com/t5/Qlik-Design-Blog/Set-Analysis-in-the-Aggr-function/ba-p/1463822
In fact i'm workin in a table based on a count(<SomeConditions> disinct ColumnONE)
The ColumnOne has a one to many relation with ColumnTWO
and the ColumnTWO has an other one to many relation with ColumnTHREE
Finally i want to add a column in the table witch shows :
concatenation of all ColumnTHREE(String) group by the MAX(ColumnTWO(Date))