diff options
Diffstat (limited to 'contrib/postgres_fdw/postgres_fdw.c')
| -rw-r--r-- | contrib/postgres_fdw/postgres_fdw.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c index ee0220a7f70..066cffba955 100644 --- a/contrib/postgres_fdw/postgres_fdw.c +++ b/contrib/postgres_fdw/postgres_fdw.c @@ -4410,6 +4410,18 @@ make_tuple_from_result_row(PGresult *res, if (ctid) tuple->t_self = tuple->t_data->t_ctid = *ctid; + /* + * Stomp on the xmin, xmax, and cmin fields from the tuple created by + * heap_form_tuple. heap_form_tuple actually creates the tuple with + * DatumTupleFields, not HeapTupleFields, but the executor expects + * HeapTupleFields and will happily extract system columns on that + * assumption. If we don't do this then, for example, the tuple length + * ends up in the xmin field, which isn't what we want. + */ + HeapTupleHeaderSetXmax(tuple->t_data, InvalidTransactionId); + HeapTupleHeaderSetXmin(tuple->t_data, InvalidTransactionId); + HeapTupleHeaderSetCmin(tuple->t_data, InvalidTransactionId); + /* Clean up */ MemoryContextReset(temp_context); |