推荐回答(5个)
1、先理解一下IF函数的语法:
if(条件,条件为真的返回值,条件为假的返回值)

2、现在尝试使用其他数值代替真假,excel使用0代替假,但并非只有1可以代替真,所有非1的数值都可以代替真。

3、那么用一个数组作为条件怎么理解呢,可以尝试一下。可以发现0放在前面条件是假,1放在前面条件为真。
怎么理解这个问题呢,其实上面的数组条件可以拆成两个IF公式:
=IF(0,"写的数组1,0","写的数组0,1")
=IF(1,"写的数组1,0","写的数组0,1")

4、这种设置有什么作用呢,下面来做一个例子。根据姓名查找这个人的职务。

5、可以使用公式:=VLOOKUP(F2,IF({1,0},D2:D10,C2:C10),2,),用F2作为查找条件,对D列进行查找,如果改成{0,1}则是对C列为查找范围。返回内存数组,对F2进行精确查找。

6、反过来,如果按照职务查找姓名,公式可以写成:=VLOOKUP(G3,IF({0,1},D2:D10,C2:C10),2,)。

7、这里为什么一定要用条件数组呢,因为如果直接使用0或者1作为条件,并不能返回一个可以作为vlookup查找的内存数组。

{1,0}
这是一组常数数组,其中包含1和0
比如这个公式
=VLOOKUP(H3,IF({1,0},D$3:D$5,C$3:C$5),2,)
{1,0} 常数数组 1和0
在逻辑中 不为0的值都是真值,为0的值是假值 因此在IF函数中1返回真值的部份 D$3:D$5 ,0返回假值的部份 C$3:C$5 ,形成一个新的数组,这个数组由D$3:D$5和C$3:C$5各单元格实际内容组成
我假设
C3,C4,C5单元格内容是A,B,C
D3,D4,D5单元格内容是1,2,3
则形成的数组样式就是
{1,"A";2,"B";3,"C";}
则公式就转成了
=VLOOKUP(H3,{1,"A";2,"B";3,"C";},2,)
这时如果H3单元格的内容是2,则公式就返回"B"
这个公式的作用是让排在序列前面的C列,转成第二列即返回值列,让D列的内容成为待查找的首列
这个公式还可以改写成
=INDEX(C$3:C$5,MATCH(H3,D$3:D$5,))
如果是,选E2:E7,如果否,选D2:D7
一般配合VLOOKUP使用
VLOOKUP正常情况下是数据列从左至右.就是例如D列是姓名,E列是年纪
求某人年纪,就是=VLOOKUP("姓名",D2:D7,E2:E7,2,0)
如果正相反,D列是年纪,E列是姓名,就需要用楼主所用的IF函数调整数据的顺序
=VLOOKUP("姓名",IF({1,0},E2:E7,D2:D7),2,0)
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