Jan Behrens <jbe-mlist(at)magnetkern(dot)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