扩展后的多条重复数据,希望修改,检验修改的值是否相等,不相等报错,且不判断空值,请教如何实现?图二图三是自己试出来的,可以帮忙看下逻辑有没有问题检验判断语句:IF(len(GREPARRAY(split(a4,","),item = c2)) <=1,3,if(len(GREPARRAY(split(A5,","),item = d2)) >1,if(len(GREPARRAY(split(A4,","),item = c2))<len(GREPARRAY(split(A5,","),item = d2)),1,3) ,3))>1