Robert Haas <robertmh...@gmail.com> writes:
> 2010/2/10 Oleg Serov <sero...@gmail.com>:
>> Somebody will fix this bug or not?
> I'm not sure whether this is a bug.
Yeah, I think it is. The problem is that exec_move_row is taking too
many shortcuts with nulls. If the input record is short of fields it
is willing to pass this data to exec_assign_value:
value = (Datum) 0;
isnull = true;
valtype = InvalidOid;
The invalid datatype value doesn't matter in the scalar case, but
if the target is a sub-row it fails the type_is_rowtype() sanity
check in exec_assign_value.
The cleanest fix would probably be to use the target variable's
datatype here instead of InvalidOid. Alternatively, we could
change exec_assign_value to not apply the sanity check unless
the input is non-null.
regards, tom lane
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