Excel应用小技巧:从身份证中提取完整的出生日期,公式: =IF(LEN(B2)=15,CONCATENATE("19",MID(B2,7,2),"年",MID(B2,9,2),"月",MID(B2,11,2),"日"),CONCATENATE(MID(B2,7,4),"年",MID(B2,11,2),"月",MID(B2,13,2),"日"))