select sum(a)/3 from atable order by record_id desc limit 3;
----- Original Message -----
From: "Kevin Xin Lin" <[EMAIL PROTECTED]>
To: "mysql" <[EMAIL PROTECTED]>
Sent: Sunday, April 15, 2001 9:04 PM
Subject: how to get average value for top n records?
> Hi, if I have a table with only one field A like this:
>
> record#1: 2
> record#2: 3
> record#3: 2
> record#4: 4
> record#5: 6
> record#6: 8
>
> How to write a sql statement to retrieve the average value of field A
> for the last 3 records?
>
> Did I make sense here? Thanks for help.
>
>
>
>
>
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