Excel笔记


一、基础部分

(1)求和
=sum()
(2)平均数
=avg()
(3)总数
=count()
(4)分类汇总
(5)字符串截取
=LEFT(B34,1)
=CONCATENATE("张三","李四") #张三李四

二、高级部分

(1)身份证数据计算
=MID(A6,7,8) #522228199907201735->19990720
=IF(MOD(MID(A6,17,1),2),"男","女") #522228199907201735->男
=DATEDIF(TEXT(MID(E2,7,8),"#-00-00"),TODAY(),"y") #522228199907201735->23
(2)时间数据转换
=(A1+8*3600)/86400+70*365+19
yyyy"年"mm"月"dd"日"hh"时"mm"分"ss"秒"

(3)行数判断
=IF(MOD(ROW()+1,2)=1,CONCATENATE(ROW()/2,"组:",B2,A2,";",B3,A3),"")

(4)联表查询