Re: counting days

From: AgentM <agentm(at)themactionfaction(dot)com>
To: PostgreSQL General ML <pgsql-general(at)postgresql(dot)org>
Subject: Re: counting days
Date: 2006-08-29 21:32:51
Message-ID: D0787162-80A0-422D-824E-0217DF282E0F@themactionfaction.com
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Perhaps you are trying to count business days? Those vary around the
world and you would certainly need a table to hold the holidays and
such. If you just want to count the number of non-weekend-days, then
get the interval as days and then it's a simple matter of math:

2*daysInterval/7+(daysInterval % 7 == 6 ? 1 : 0)

This holds assuming you are using dates and not timestamps- you may
wish to subtract 1 depending on what the dates represent.

-M

On Aug 29, 2006, at 14:35 , garry saddington wrote:

> I need to count the days between two dates that are not saturdays or
> sundays. I have read the manual and searched the lists but I am
> struggling. I can count the days but am finding difficulty
> excluding sat
> and sun from the count. I need this without reference to any tables.
> Does anyone have any pointers please.
> Regards

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