[Chicago-talk] Database or Code?

[Warren Lindsey]

Select depart, arrive, count(*) from flights group by depart, arrive;

-----Original Message-----
From: imran javaid <imranjj at gmail.com>
Sent: Saturday, June 27, 2009 3:55 PM
To: Chicago.pm chatter <chicago-talk at pm.org>
Subject: Re: [Chicago-talk] Database or Code?

There are many ways to slice and dice this. One is to build a hash of hashes:
$data->{$airline}->{$origin}->{$destination}++



On 6/27/09, Richard Reina <richard at rushlogistics.com> wrote:
> I have to create a summary report out of a database that contains data about
> flight departures.
>
> Example:
>
> Chicago, IL Phoenix, AZ United
>
> Each report has to summarize an airline's quantity of unique monthly flights
>  so that in the end I get:
>
> Continental Airlines:
> Chicago, IL to New York 21
> New York, NY to Dallas 17
> Houston, TX to Dallas 45
> Chicago, IL to Phoenix 5
>
> I can't find an SQL query that allows me to parse the data in such a way so
> I was wondering if I could get some general opinions on what would be the
> easiest way to do this in perl?
> _______________________________________________
> Chicago-talk mailing list
> Chicago-talk at pm.org
> http://mail.pm.org/mailman/listinfo/chicago-talk
>

-- 
Sent from my mobile device
_______________________________________________
Chicago-talk mailing list
Chicago-talk at pm.org
http://mail.pm.org/mailman/listinfo/chicago-talk