Hi,
I noticed that this in make_tuple_from_result_row does conversion error
handling only for the ordinary-column case (ie, errpos.cur_attno is set
for that case, but not for the ctid case).
/* convert value to internal representation */
if (i > 0)
{
/* ordinary column */
Assert(i <= tupdesc->natts);
nulls[i - 1] = (valstr == NULL);
/* Apply the input function even to nulls, to support domains */
errpos.cur_attno = i;
values[i - 1] = InputFunctionCall(&attinmeta->attinfuncs[i - 1],
valstr,
attinmeta->attioparams[i - 1],
attinmeta->atttypmods[i - 1]);
errpos.cur_attno = 0;
}
else if (i == SelfItemPointerAttributeNumber)
{
/* ctid --- note we ignore any other system column in result */
if (valstr != NULL)
{
Datum datum;
datum = DirectFunctionCall1(tidin, CStringGetDatum(valstr));
ctid = (ItemPointer) DatumGetPointer(datum);
}
}
I think errpos.cur_attno should be set for the ctid case as well.
Attached is a patch for that.
Best regards,
Etsuro Fujita
*** a/contrib/postgres_fdw/postgres_fdw.c
--- b/contrib/postgres_fdw/postgres_fdw.c
***************
*** 3755,3772 **** make_tuple_from_result_row(PGresult *res,
valstr = PQgetvalue(res, row, j);
/* convert value to internal representation */
if (i > 0)
{
/* ordinary column */
Assert(i <= tupdesc->natts);
nulls[i - 1] = (valstr == NULL);
/* Apply the input function even to nulls, to support domains */
- errpos.cur_attno = i;
values[i - 1] = InputFunctionCall(&attinmeta->attinfuncs[i - 1],
valstr,
attinmeta->attioparams[i - 1],
attinmeta->atttypmods[i - 1]);
- errpos.cur_attno = 0;
}
else if (i == SelfItemPointerAttributeNumber)
{
--- 3755,3771 ----
valstr = PQgetvalue(res, row, j);
/* convert value to internal representation */
+ errpos.cur_attno = i;
if (i > 0)
{
/* ordinary column */
Assert(i <= tupdesc->natts);
nulls[i - 1] = (valstr == NULL);
/* Apply the input function even to nulls, to support domains */
values[i - 1] = InputFunctionCall(&attinmeta->attinfuncs[i - 1],
valstr,
attinmeta->attioparams[i - 1],
attinmeta->atttypmods[i - 1]);
}
else if (i == SelfItemPointerAttributeNumber)
{
***************
*** 3779,3784 **** make_tuple_from_result_row(PGresult *res,
--- 3778,3784 ----
ctid = (ItemPointer) DatumGetPointer(datum);
}
}
+ errpos.cur_attno = 0;
j++;
}
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