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POAccess DB do line item calculation on total of a column before knowing the total
 

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    <p><strong>[ edit ]</strong></p> <p>For the record, here's the problem portion of the query, which is now working:</p> <pre><code>SELECT m.groupNum, t.ea, ( t.ea - ( t.ea * m.margin )) AS estCost, (( t.ea - ( t.ea * m.margin )) * t.quantity ) AS salesSub, ((( t.ea - ( t.ea * m.margin )) * t.quantity ) / ( SELECT SUM(( t2.ea - ( t2.ea * m.margin )) * t2.quantity ) FROM temp as t2 INNER JOIN masters as m2 ON t2.mod = m2.mod WHERE m2.groupNum = m.groupNum ) ) AS salesPercent etc... </code></pre> <p><strong>[ end edit ]</strong></p> <p>I think I need a query that can recursively update itself based on the total of a column's values after inserting values on all the rest of the records for a given (groupNum) range.</p> <p>I already have the estCost and salesSub fields. Now I need to do calculations on the <strong>salesPercent</strong> field, which involves knowing the total amount of all salesSub records in a given set (groupNum). </p> <pre><code>salesPercent = ( salesSub / [the sum total of all salesSub amounts for each groupNum] ) </code></pre> <p><em>(snip)</em></p> <pre><code>SELECT m.id, t.priceEach, ( t.priceEach - ( t.priceEach * m.margin )) AS estCost, (( t.priceEach - ( t.priceEach * m.margin )) * t.quantity ) AS salesSub -- is it possible to perform calculation on salesPercent here? INTO output FROM financeMasters AS m INNER JOIN temp AS t ....... </code></pre> <p><em>(end snip)</em></p> <p>I have this...</p> <pre><code>------ output --------------------------------------------------------------- id | groupNum | priceEach | estCost | salesSub | salesPercent | --------------------------------------------------------------- 1 | apple | 150.00 | 90.00 | 90.00 | 2 | apple | 100.00 | 60.00 | 60.00 | 3 | apple | 50.00 | 30.00 | 30.00 | </code></pre> <p>but how can I calculate salesPercent on the salesSub total (in this case 180.00) before knowing the total?</p>
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    1. CO42, I've updated my answer for you.
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