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Message from discussion help with aggregation & group by
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Mark Van De Vyver  
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 More options Nov 6 2007, 4:24 am
From: "Mark Van De Vyver" <mvy...@gmail.com>
Date: Tue, 6 Nov 2007 20:24:37 +1100
Local: Tues, Nov 6 2007 4:24 am
Subject: Re: help with aggregation & group by
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On Nov 6, 2007 7:50 PM, Sharon Rosner <cico...@gmail.com> wrote:

> > ... the following presentation (discussed on the Nitro mail list) and
> > the code beneath it illustrate a neat implementation of just this sort
> > of thing.  It seems very elegant and it would simplify the above
> > syntax, so may be worth looking into?

> Sequel is already much more advanced than that. Have a look at the way
> you can specify filters in Sequel.

Apologies, I'm not yet familiar with the filters.  I was just
superficially comparing the code inside the query block with Peter's,
in particular I thought:

from   :c => Customer, :b => Bank, :a => Account
  select b.name
  where  ((c.firstname == first1) |
          (c.firstname == first2)), etc.

appeared simpler than having blocks and .AS, but no doubt there is a
limit to his approach I'm unaware of.

> My plan is to take the the great
> filtering capability that we have and extend it so you can specify
> Ruby expressions for any SQL clause and have it automagically
> translated to SQL.

Sounds great!
Thanks for all the great work.

Regards
Mark

> sharon


 
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