Excel中if函数 超过7层解决办法
将七层之外的IF语句，放在另外的单元格内来处理，例：C5=if(if,...,(if...),B5))),B5单元格就是存放七层之外的IF语句。依此类推，可以实现在数据库语言中CASE语句的功能。
IF 函数的确有七层嵌套的限制。遇到七层嵌套还解决不了的问题，可以尝试用其它的函数组合和数组公式来解决；有时用 VBA 方案可以有很好的效果。
这里给出一个解决IF函数嵌套超出范围的方法，可能比较容易使初学者看懂。其思路是：一个单元格做不了的事，分给两个或更多的单元格来做，文字内容是这样，函数内容也是这样。
例子：假如 A1＝1，则 B1＝A；A1＝2，则 B1＝B …… A1＝26，则 B1＝Z
解决方法如下：
B1 = IF(A1=1,"A",IF(A1=2,"B",IF(A1=3,"C",IF(A1=4,"D",IF(A1=5,"E",IF(A1=6,"F",IF(A1=7,"G",IF(A1=8,"H",C1))))))))
C1 = IF(A1=9,"I",IF(A1=10,"J",IF(A1=11,"K",IF(A1=12,"L",IF(A1=13,"M",IF(A1=14,"N",IF(A1=15,"O",IF(A1=16,"P",D1))))))))
D1 = IF(A1=17,"Q",IF(A1=18,"R",IF(A1=19,"S",IF(A1=20,"T",IF(A1=21,"U",IF(A1=22,"V",IF(A1=23,"W",IF(A1=24,"X",E1))))))))
E1 = IF(A1=25,"Y",IF(A1=26,"Z","超出范围"))
根据情况，可以将 C、D、E 这些从事辅助运算的单元格放在其它任何地方
一个单元格也可以实现
=IF(A1=1,"A",IF(A1=2,"B",IF(A1=3,"C",IF(A1=4,"D",IF(A1=5,"E",IF(A1=6,"F",IF(A1=7,"G",IF(A1=8,"H",""))))))))&IF(A1=9,"I",IF(A1=10,"J",IF(A1=11,"K",IF(A1=12,"L",IF(A1=13,"M",IF(A1=14,"N",IF(A1=15,"O",IF(A1=16,"P",""))))))))&IF(A1=17,"Q",IF(A1=18,"R",IF(A1=19,"S",IF(A1=20,"T",IF(A1=21,"U",IF(A1=22,"V",IF(A1=23,"W",IF(A1=24,"X",""))))))))&IF(A1=25,"Y",IF(A1=26,"Z",""))(数组形式输入)。
以一例：a1=1,2,3,4,5,6,7,8,9,10
b=if(a1=1,"一",if(a1=2,"二",if(a3=3，"三",.......if(a1=9,"九",if(a1=10,"十")))))),if超过7层不起作用，我该如何办
解答：1、b=if(a1>5,if(a1=6,"六"。。。。。。))，明白意思 就是截为两段再做判断，这样可以不超过7重。
2、可以用自定义数字格式。也可以用=CHOOSE(A1+1,"一二三四五六七八九十")
问：实际上我的要求是现行高一成绩统计中:b=if(a1="语文","语文",if(a1="数学","数学",if(a1="英语","英语",if(a1="物理","物理",if(a1="化学","化学",if（a1="历史","历史",if(a1="政治",政治",if(a1="生物","生物“，if(a1="地理","地理")))))))),这样超过了7层。我不知如何处理。因为下面的公式要引用语、数、英、等。
答：新建一表，取名Data，找一区域设置名称为SubjectTable：
语文 Chinese
英语 English
..
=vlookup(SubjectTable,a1,2,false)可以有65536个，够了吧。其实，稍加改进，理论上，可以有达到你硬盘空间的个数。或用if和or的组合可以解决15个。
再举个例子：
=IF(A16="","",IF(B16="","样办尚未交",IF(OR(B16="内部检查中",B16="数据查询中",B16="数据查询中"),CONCATENATE(IF(B16="内部检查中","品质检测中",""),IF(B16="数据查询中","图纸未确认",""),IF(B16="为不合格","需要修正","")),CONCATENATE(IF(C16="客户检查中","待客回复",""),IF(C16="合格","待P/O生产",""),IF(C16="取消","客户取消",""),IF(C16="为客户设变中","客户设变中",""),IF(C16="不合格","需要修正","")))))
