如何總結其值等於隨機變量的行在excel 2010

Question

我想要總和excel表的行的值等於一些隨機值。 例如：

A  B 
12 3 
12 5 
10 6 
13 7 
13 2 
13 2 
... 

比如我要總結，其a相等所有B。即總和所有B的A是12，然後是10等等。使用函數sumif（）我不能動態地傳遞A的值..是否有任何人有一個想法

Answer 1

嘗試這兩個之一選項：

Use a sumif with the range like this: 

To get the sum use formula 
=SUMIF(A5:A10,B1,B5:B10) 

Here A5:A10 is criteria range. B1 is variable criteria cell, and B5:B10 is sum range. 


Use a sumif with a table. 
=SUMIF(Table2[A],B1,Table2[B]) 
Here Table2[A](Tablename[Columnname]) is criteria range, B1 is variable criteria cell, and Table2[B] is column used for sum. 

Find an example in this excel document.