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Re: Problems with CREATE AGGREGATE and user defined state type. - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Problems with CREATE AGGREGATE and user defined state type.
Date
Msg-id 17525.1142958596@sss.pgh.pa.us
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In response to Problems with CREATE AGGREGATE and user defined state type.  (Magnus Jonsson <bigfoot@acc.umu.se>)
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Magnus Jonsson <bigfoot@acc.umu.se> writes:
> I discoverd what seems to be a bug in postgresql 7.4.12 (also on
> 7.4.7).

AFAIR, 7.4 and earlier didn't really have a sane way of representing
NULL composite-type values, so this aggregate isn't going to work
before 8.0. 
        regards, tom lane

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