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Re: Re: [HACKERS] Is it necessary to rewrite table while increasing the scale of datatype numeric？ - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: Re: [HACKERS] Is it necessary to rewrite table while increasing the scale of datatype numeric？
Date
Msg-id 20130905195337.GE6067@eldon.alvh.no-ip.org
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In response to Re: [HACKERS] Is it necessary to rewrite table while increasing the scale of datatype numeric？  (Greg Stark <stark@mit.edu>)
Responses Re: [HACKERS] Re: [HACKERS] Is it necessary to rewrite table while increasing the scale of datatype numeric？
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Greg Stark escribió:

> The main difficulty is that Postgres is very extensible. So to implement
> this you need to think bigger than NUMERIC. It should also be possible to
> alter a column from varchar(5) to varchar(10) for example (but not the
> other way around).

We already allow that.  See commits
8f9fe6edce358f7904e0db119416b4d1080a83aa and
3cc0800829a6dda5347497337b0cf43848da4acf

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Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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