Filtering data for one column displaying all data for the next column

Thanks for the reply from Kedar_Pande , please allow me to provide another insight: 
Hi  rifaymars ,

Here are the steps you can follow：

1. Create a table of dates with no joins to act as a slicer.

Table 2 =
DISTINCT('Table'[Part_Number])

2. Create measure.

Flag =
var _select=SELECTEDVALUE('Table 2'[Part_Number])
var _test=CONCATENATEX(FILTER(ALLSELECTED('Table'),[Part_Number]=_select),[Document_No],"-")
return
IF(
    CONTAINSSTRING(
        _test,MAX('Table'[Document_No]))=TRUE(),1,0)

3. Place [Flag]in Filters, set is=1, apply filter.

4. Result:

As far as I know, [Document_No] has 4010203008 in TP-3601, TP-3602,TP-3603, so they all display

Best Regards,

Liu Yang

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