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Adding values in 2 columns in Access

P: 7
Hi!

Here I need help from you all - I would like to add values in 2 columns and write them to a third column and get the avg value of the third column.

For Example:
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  1. ColumnA  ColumnB  ColumnC
  2.  
  3. 1          5          6
  4.  
  5. 2          6          8
  6.  
  7. 3          7         10
  8.  
  9. Avg                    8
Now I would like to run a query on a table - to add column A and Colum B, writing the sum to column C and finding avg of values in Column C.

Thanks in anticipation of your help.

Regards,

Omnitha
Aug 28 '08 #1
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1 Reply


NeoPa
Expert Mod 15k+
P: 31,470
There's really no point in writing ColumnC. Just display it instead.

Assuming a table :
Table Name = [tblMyTable]
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  1. ColumnA  Number
  2. ColumnB  Number
...then the following SQL provides your initial results set :
Expand|Select|Wrap|Line Numbers
  1. SELECT ColumnA,
  2.        ColumnB,
  3.        ColumnA+ColumnB AS ColumnC
  4. FROM tblMyTable
A query to show the average of ColumnC would need to be a separate query, and could be :
Expand|Select|Wrap|Line Numbers
  1. SELECT Avg(ColumnA+ColumnB) AS [Avg]
  2. FROM tblMyTable
Aug 28 '08 #2

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