Excluding days in mysql query

Hi all,

Just a little question about the following query :

SELECT *,(TO_DAYS(task_done) - TO_DAYS(task_planned)) AS days FROM
tasks

"days" is the diffrence in days between two dates. I would
like to exclude days of te w-end (saturdays ans sundays).

Is it possible to do that into the query or do i have to do it with
PHP?

Thanks?



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