Keep the N highest/lowest value

To get the numbers of this year past 3 months and last year past three months you can create a custom filter to be used with Table.SelectRows.

Assuming you have a "Date" column, something like:

//create custom filter
//current "last three months"
    dtCurrentEnd = Date.From(Date.StartOfMonth(DateTime.LocalNow())),
    dtCurrentStart = Date.From(Date.AddMonths(dtCurrentEnd,-3)),
//previous year same three months
    dtPrevEnd = Date.AddYears(dtCurrentEnd,-1),
    dtPrevStart = Date.AddYears(dtCurrentStart,-1),

//then filter the table
    yrToyr = Table.SelectRows(#"Changed Type", 
        each 
            ([Date] >=dtCurrentStart and [Date] < dtCurrentEnd) or 
            ([Date]>=dtPrevStart and [Date]< dtPrevEnd))

Hi AtoBI ,

You can filter the first three months data directly as follows.

Selcet 'In the Previous...'

Best Regards,

Stephen Tao

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