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  1. ulm

    average of n number

    Hi, I have a column in my access database table and I want to add another column with average of every 20 numbers, like that: Field1 field2 a1 null a2 null .............. a20 (a1+....+a20)/20 a21 (a2+ ...+a21)/20 a22 (a3+.....+a22)/20...

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