write [%0->$$8, %0->$$3, %0->$$4, %0->$$2]
-- SINK_WRITE  |PARTITIONED|
  project ([$$8, $$3, $$4, $$2])
  -- STREAM_PROJECT  |PARTITIONED|
    assign [$$8] <- [function-call: hive:org.apache.hadoop.hive.ql.udf.UDFOPMultiply, Args:[2, %0->$$1]]
    -- ASSIGN  |PARTITIONED|
      select (function-call: algebricks:lt, Args:[function-call: hive:org.apache.hadoop.hive.ql.udf.UDFOPMultiply, Args:[%0->$$1, 2], 20])
      -- STREAM_SELECT  |PARTITIONED|
        exchange 
        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
          data-scan []<-[$$1, $$2, $$3, $$4, $$5, $$6, $$7] <- default.supplier
          -- DATASOURCE_SCAN  |PARTITIONED|
            exchange 
            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
              empty-tuple-source
              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|