-- SINK  |PARTITIONED|
  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
    -- INSERT_DELETE  |PARTITIONED|
      -- ONE_TO_ONE_EXCHANGE  |LOCAL|
        -- STABLE_SORT [$$21(ASC)]  |LOCAL|
          -- HASH_PARTITION_EXCHANGE [$$21]  |PARTITIONED|
            -- ASSIGN  |PARTITIONED|
              -- STREAM_PROJECT  |PARTITIONED|
                -- ASSIGN  |PARTITIONED|
                  -- ASSIGN  |PARTITIONED|
                    -- STREAM_SELECT  |PARTITIONED|
                      -- ASSIGN  |PARTITIONED|
                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                          -- DATASOURCE_SCAN  |PARTITIONED|
                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|