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Increased functionality in rowset.filter

Increased functionality in rowset.filter  
Mark Wood
 Re: Increased functionality in rowset.filter  
Ken Mayer [dBVIPS]
From:Mark Wood
Subject:Increased functionality in rowset.filter
Date:Tue, 7 Dec 2004 10:21:38 -0000
In a future release of dBase, I would like to see the ability to perform
field vs field comparison within filters.

Eg
(where "account_balance", "invoice_address" and "delivery_address" are
fields and "rowDebtors" is a rowset)
rowDebtors.filter := "invoice_address <> delivery_address and
account_balance > 0"

granted a field "delivery_not_invoice" set to true/false would address the
issue, but that is extra coding and gets less and less elegant
the more comparisons of this type are made: the programmer could end up with
more fields of this type than fields that hold 'real' data.

It would also be advantageous to incorporate support for some of the
predicates such as Like, though I would find that less useful personally
than
the addition of field vs field comparison.
From:Ken Mayer [dBVIPS]
Subject:Re: Increased functionality in rowset.filter
Date:Tue, 07 Dec 2004 05:45:40 -0800
Mark Wood wrote:
> In a future release of dBase, I would like to see the ability to perform
> field vs field comparison within filters.

There's a bug report for this one, I believe.

QAID: 378

Ken

--
/(Opinions expressed are purely my own, not those of dataBased
Intelligence, Inc.)/

*Ken Mayer* [dBVIPS]
/Golden Stag Productions/
dBASE at goldenstag dot net
http://www.goldenstag.net/GSP
http://www.goldenstag.net/dbase
   

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