Custom Column Min and Max Count Difference of a Group

[Anonymous]

See below. Need a custom column that returns the difference between the min and max count of the 'count_column' grouped by the 'group_column'. And then return a boolean. Something like:

CALCULATE(
    MIN(
        COUNT(table[count_column])) - 
    MAX(
        COUNT(table[count_column])), 
    ALLEXCEPT(table,table[group_column])
) = 0

group_column	count_column
A	text
A	text
B	text
B	text
C	text

[vapid128]

where is your customer ID?

[Anonymous]

Not sure what you're referring to. For additional clarity. I'm using matrix visual that needs to be filtered if a value (column_count) changes over time. Hence the min minus max. So there is no cutomer ID. Each row has a date associated with it. The count of items for that calandar week needs to be compared across time and then a boolean value is returned if that value has changed.