From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Nick Raj <nickrajjain(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: DETOAST Datum |
Date: | 2011-05-16 14:22:06 |
Message-ID: | 15275.1305555726@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Mon, May 16, 2011 at 3:41 AM, Nick Raj <nickrajjain(at)gmail(dot)com> wrote:
>> "How to get arguments toastable??" and even my table pg_class.reltoastrelid
>> entry is zero.
> It's pretty hard to guess what's going wrong here from the information
> you've provided. But reltoastid should not be 0 if you're using a
> variable-length data type.
It could be if the type is not marked toastable (ie, has storage class
PLAIN, which I think is the default even for varlena types).
But in any case I suspect that 90% of the problem here is an incorrect
declaration of the *function* not the type. We haven't seen the C
function declaration, nor the SQL CREATE FUNCTION command, but if it's
going through fmgr_oldstyle then there isn't a PG_FUNCTION_INFO_V1
marker, which maybe is the problem.
regards, tom lane
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