text: -- @author ramans2
  -- @created 2013-10-30 12:00:00 
  -- @modified 2013-10-30 12:00:00
  -- @tags dml 
  -- @db_name dmldb
  -- @description MPP-21536: Duplicated rows inserted when ORCA is turned on
  \echo --start_ignore
  set gp_enable_column_oriented_table=on;
  \echo --end_ignore
  
  delete from zzz where b in (select a from m);
  
  select * from zzz order by 1, 2;
  