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Re: ALTER TABLE MODIFY COLUMN - Mailing list pgsql-hackers

From Tom Lane
Subject Re: ALTER TABLE MODIFY COLUMN
Date
Msg-id 2994.987143795@sss.pgh.pa.us
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In response to ALTER TABLE MODIFY COLUMN  (Mark Butler <butlerm@middle.net>)
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Mark Butler <butlerm@middle.net> writes:
> Surely if we have an write exclusive table lock we can rewrite tuples
> in place rather than creating new versions with its corresponding 2x
> space requirement.

Nyet.  Consider transaction rollback.
        regards, tom lane

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