怎么计算开始日期startDate和结束日期endDate的天数呢,比如20240101-20240116,那就得到的天数是16
DATEDIF(CONCATENATE(left("20240101",4),"-",mid("20240101",5,2),"-",right("20240101",2)),CONCATENATE(left("20240116",4),"-",mid("20240116",5,2),"-",right("20240116",2)),"D")+1