How to string from row1 + string from row 2 when ID = ID ?

[Substance1001]

Please advise.

[v-zhangti · Accepted solution]

Hi, @Substance1001 

Please check the following methods.

Column =
CONCATENATEX (
    FILTER ( 'Table', [Task ID] = EARLIER ( 'Table'[Task ID] ) ),
    [Description],
    ","
)

Is this the result you expect?

Best Regards,

Community Support Team _Charlotte

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