试图对某些设备的DISTINCTCOUNT供应商进行计数，尽管它应该为零，但它总是对空白单元格进行计数
它算是空白。
CountQuote:=CALCULATE(DISTINCTCOUNT(Bids[Manufacturing Company]); Not(isblank(Bids[Manufacturing Company])))
CountQuote:=CALCULATE(DISTINCTCOUNT(Bids[Manufacturing Company]); FILTER(Bids;Not(isblank(Bids[Manufacturing Company]))))