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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Jan Behrens <jbe-mlist@magnetkern.de>
cc: pgsql-general@lists.postgresql.org
Subject: Re: Allowed to return possibly TOASTed datums?
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Comments: In-reply-to Jan Behrens <jbe-mlist@magnetkern.de>
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Jan Behrens <jbe-mlist@magnetkern.de> writes:
> Is it allowed to use the following function, assuming the data type is
> TOASTable?

> PG_FUNCTION_INFO_V1(mytype_pos);
> Datum mytype_pos(PG_FUNCTION_ARGS) {                             
>   PG_RETURN_DATUM(GETARG_DATUM(0));
> }

Absolutely.  You can find things equivalent to that in the
core code, I think.

			regards, tom lane