text: -- @author prabhd 
  -- @created 2012-12-05 12:00:00 
  -- @modified 2012-12-05 12:00:00 
  -- @tags dml 
  -- @db_name dmldb
  -- @execute_all_plans True
  -- @description update_test1: Update to constant value
  \echo --start_ignore
  set gp_enable_column_oriented_table=on;
  \echo --end_ignore
  SELECT COUNT(*) FROM dml_heap_pt_r WHERE c ='text';
  UPDATE dml_heap_pt_r SET c = 'text';
  SELECT COUNT(*) FROM dml_heap_pt_r WHERE c ='text';
  