mysql-function to count days between 2 dates excluding weekends

Question

I\'ve searched through many examples , good ones I got :

1. Count days between two dates, excluding weekends (MySQL only)

2. How to count date dif

Answer 1

This query will work fine, all the queries above are not working well. Try this :

SELECT ((DATEDIFF(date2, date1)) -
        ((WEEK(date2) - WEEK(date1)) * 2) -
        (case when weekday(date2) = 6 then 1 else 0 end) -
        (case when weekday(date1) = 5 then 1 else 0 end)) as DifD

Test it like this :

SELECT ((DATEDIFF('2014-10-25', '2014-10-15')) -
            ((WEEK('2014-10-25') - WEEK('2014-10-15')) * 2) -
            (case when weekday('2014-10-25') = 6 then 1 else 0 end) -
            (case when weekday('2014-10-15') = 5 then 1 else 0 end)) as DifD

The result :

DifD    
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