Re: [HACKERS] Re: [HACKERS] Re: [HACKERS] Re: [HACKERS] Is it necessary to rewrite table while increasing the scale of datatype numeric？

From: Hannu Krosing <hannu(at)2ndQuadrant(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Greg Stark <stark(at)mit(dot)edu>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, wangshuo(at)highgo(dot)com(dot)cn, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [HACKERS] Re: [HACKERS] Re: [HACKERS] Re: [HACKERS] Is it necessary to rewrite table while increasing the scale of datatype numeric？
Date: 2013-09-06 18:34:46
Message-ID: 522A2046.4030702@2ndQuadrant.com
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On 09/06/2013 07:57 PM, Robert Haas wrote:
> On Fri, Sep 6, 2013 at 12:34 PM, Greg Stark <stark(at)mit(dot)edu> wrote:
>> But I wonder if we could just declare that that's not what the scale typmod
>> does. That it's just a maximum scale but it's perfectly valid for NUMERIC
>> data with lower scales to be stored in a column than the typmod says. In a
>> way the current behaviour is like bpchar but it would be nice if it was more
>> like varchar
> Sure, but the point is that 5.0000 is not the same as 5.000 today. If
> you start whacking this around you'll be changing that behavior, I
> think.
>
So we already get it wrong by rewriting ?

--
Hannu Krosing
PostgreSQL Consultant
Performance, Scalability and High Availability
2ndQuadrant Nordic OÜ

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