Problem counting number of rows when using Filter with AND-logic

Hi BJ_TS ,

I have created a simple sample, please refer to it to see if it helps you.

CountNumber = 

var _a = SELECTCOLUMNS('Table 2',"Certificate",[Certificate])

return CALCULATE(DISTINCTCOUNT('Table'[Person]),FILTER(ALL('Table'),[Certificate] in _a))

Name = 

 var _a = SUMMARIZE(ALL('Table'),[Person],"Flag",CALCULATE(COUNT('Table'[Certificate]),FILTER(ALL('Table'),[Certificate] in SELECTCOLUMNS('Table 2',"Certificate",[Certificate])&&[Person]=EARLIER('Table'[Person]))))

 var _b = COUNTROWS(ALLSELECTED('Table 2'[Certificate]))

 return MAXX(FILTER(_a,[Person]=SELECTEDVALUE('Table'[Person])&&[Flag]=_b),[Person])

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Community Support Team _ Rongtie

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