EXL公式应用,关于SUM和IF=SUM(IF($A$2:$A$90=G2,IF($B$2:$B$90=H2,IF($C$2:$C$90=I2,$C$2:$C$90))))=SUM(IF($A$2:$A$90=G2,IF($B$2:$B$90=H2,IF($C$2:$C$90=I2,$C$2:$C$90))))两条公式有什么不同呢?主要就是筛选去掉重复项之后,把数值