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Optimize multiple writes on the same row
Posted by: Francis Page
Date: March 14, 2012 02:16PM

I would like to compute some values like the sum and average of some columns of a table with millions of rows. Those values are stored another table.

I would like to have the sum and average computed in real time: every time a row is inserted or updated. I thought about using a running average to avoid doing a SELECT SUM, AVG, but it causes performance issues. As there is a lot of inserts and updates on the source table, it generates a lot a writes on the same rows of the second table.

Is there a solution for this kind of problem, where a lot of concurrent queries are trying to update the same row of the same table?

Thank you.

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Optimize multiple writes on the same row
March 14, 2012 02:16PM

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