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Finding the average of a set of data

Posted on 2008-10-14
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Last Modified: 2010-04-21
Hello Experts,

In access what is the equivalent of the DAAVERAGE function in excel?
Or In another world how can I calculate the average of 3 columns if I have a null value in some of the cells without affecting my average accuracy ?
Regards,

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Question by:dina78
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Rey Obrero earned 500 total points
ID: 22710490
try this query

select A.id, avg([x]) as averagevalue
from
(
select id, colA as x from table1
union all
select id, colB  from table1
union all
select id, colC from table1
) as A
group by A.id
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Author Closing Comment

by:dina78
ID: 31505840
worked like a charm,, thanks alot
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