distribute result [$$l]
-- DISTRIBUTE_RESULT  |PARTITIONED|
  exchange
  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
    project ([$$l])
    -- STREAM_PROJECT  |PARTITIONED|
      exchange
      -- SORT_MERGE_EXCHANGE [$$16(ASC), $$17(ASC) ]  |PARTITIONED|
        select (eq($$l.getField(10), "1994-01-20"))
        -- STREAM_SELECT  |PARTITIONED|
          exchange
          -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
            unnest-map [$$16, $$17, $$l] <- index-search("LineItem", 0, "tpch", "LineItem", false, false, 2, $$24, $$25, 2, $$24, $$25, true, true, true)
            -- BTREE_SEARCH  |PARTITIONED|
              exchange
              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                order (ASC, $$24) (ASC, $$25)
                -- STABLE_SORT [$$24(ASC), $$25(ASC)]  |PARTITIONED|
                  exchange
                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                    project ([$$24, $$25])
                    -- STREAM_PROJECT  |PARTITIONED|
                      exchange
                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                        unnest-map [$$23, $$24, $$25] <- index-search("lineitem_shipdateIx", 0, "tpch", "LineItem", false, false, 1, $$21, 1, $$22, true, true, true)
                        -- BTREE_SEARCH  |PARTITIONED|
                          exchange
                          -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                            assign [$$21, $$22] <- ["1994-01-20", "1994-01-20"]
                            -- ASSIGN  |PARTITIONED|
                              empty-tuple-source
                              -- EMPTY_TUPLE_SOURCE  |PARTITIONED|