asterix-app/src/test/resources/optimizerts/results/query-issue601.plan

-- DISTRIBUTE_RESULT  |PARTITIONED|
  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
    -- STREAM_PROJECT  |PARTITIONED|
      -- ASSIGN  |PARTITIONED|
        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
          -- PRE_CLUSTERED_GROUP_BY[$$13]  |PARTITIONED|
                  {
                    -- AGGREGATE  |LOCAL|
                      -- NESTED_TUPLE_SOURCE  |LOCAL|
                  }
            -- HASH_PARTITION_MERGE_EXCHANGE MERGE:[$$13(ASC)] HASH:[$$13]  |PARTITIONED|
              -- SORT_GROUP_BY[$$10]  |PARTITIONED|
                      {
                        -- AGGREGATE  |LOCAL|
                          -- NESTED_TUPLE_SOURCE  |LOCAL|
                      }
                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                  -- STREAM_PROJECT  |PARTITIONED|
                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                      -- DATASOURCE_SCAN  |PARTITIONED|
                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                          -- EMPTY_TUPLE_SOURCE  |PARTITIONED|