sheet1 產品日期數量a 3/11 10 b 3/12 12 c 3/16 15 a 3/18 14 sheet2(彙總) 產品數量a b c 則B2=SUMIF('sheet1'!$A$2:$A$5,A2,'sheet1'!$C$2:$C$5) 若條件還要分為 ...
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