write [%0->$$2]
-- SINK_WRITE  |PARTITIONED|
  exchange 
  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
    data-scan [$$2]<-[$$1, $$2] <- default.src
    -- DATASOURCE_SCAN  |PARTITIONED|
      exchange 
      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
        empty-tuple-source
        -- EMPTY_TUPLE_SOURCE  |PARTITIONED|