Amit Gupta wrote:
The following code didn't work:
....
    pg_partrel = heap_open(PartitionRelationId, AccessShareLock);
    pg_partscan = systable_beginscan(pg_partrel, PartitionParentIndexId, true,
                                SnapshotNow, 1, &skey);
    while (HeapTupleIsValid(pg_parttup= systable_getnext(pg_partscan)))
    {
        Form_pg_partition pg_part = (Form_pg_partition) GETSTRUCT(pg_parttup);
        Datum attr = heap_getattr(tuple, pg_part->partkey, rel->rd_att, &isnull)
        Datum min_part_attr = (Datum) (&pg_part->minval);
        Datum max_part_attr = (Datum) (&pg_part->maxval);
  ......

}

You need to use heap_getattr to access columns after the first variable length column.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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