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Counting working days between dates (DB2)

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I 've got the following question:

How to build an UDF in DB2 (e.g. 9.7 on AIX) which is able to return the working days between two dates.

Somthing like this (pseudo code)

float countWorkingDays(fromDate, toDate, GermanFederalState)

I've got a lookup table for all the relevant holidays per state.

Plus, in Autoit I can calculate all the holidays.

So all I want to do is,

a ) calculate the days between date a and date b

b ) subtract saturdays and sundays

c ) subtract all the holidays of the given state, between date a and date b

d ) return the number of working days

Any idea how to achieve the goal?

Wrting an UDF in Java? SQL-PL?

Which way would you go?

Thanks in advance


Edited by Xenobiologist

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