Re: select to_number('1,000', '999,999');

From: David Schweikert <dws(at)ee(dot)ethz(dot)ch>
To: pgsql-bugs(at)postgresql(dot)org
Subject: Re: select to_number('1,000', '999,999');
Date: 2004-11-22 06:50:59
Message-ID: 20041122065059.GA4190@ee.ethz.ch
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On Sun, Nov 21, 2004 at 20:10:08 -0500, Tom Lane wrote:
> I'm not entirely convinced this is a bug. I get the right answer from
>
> regression=# select to_number('001,000', '999,999') ;
> to_number
> -----------
> 1000
> (1 row)
>
> It's arguable that to_number() should throw an error when the input
> doesn't match the format, but right now it doesn't ...

It seems strange to me that to_char(1000,'999,999') works (it returns
1,000), but the reverse doesn't.

I want to convert a formatted number with group separators, but I don't
know how many digits it has: should I count the digits myself and adapt
the mask (which is a customization and thus entered by the user)?

Cheers
David

--
David Schweikert | phone: +41 44 632 7019
System manager ISG.EE | walk: ETH Zentrum, ETL F24.1
ETH Zurich, Switzerland | web: http://people.ee.ethz.ch/dws

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