asterixdb/asterix-app/src/test/resources/optimizerts/results/btree-index-selection/cast-default-null/cast-default-null-13.plan

-- DISTRIBUTE_RESULT  |PARTITIONED|
  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
    -- STREAM_PROJECT  |PARTITIONED|
      -- ASSIGN  |PARTITIONED|
        -- SORT_MERGE_EXCHANGE [$$56(ASC) ]  |PARTITIONED|
          -- STABLE_SORT [$$56(ASC)]  |PARTITIONED|
            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
              -- STREAM_PROJECT  |PARTITIONED|
                -- ASSIGN  |PARTITIONED|
                  -- STREAM_SELECT  |PARTITIONED|
                    -- STREAM_PROJECT  |PARTITIONED|
                      -- ASSIGN  |PARTITIONED|
                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                          -- BTREE_SEARCH (test.ds6.ds6)  |PARTITIONED|
                            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                              -- STABLE_SORT [$$59(ASC)]  |PARTITIONED|
                                -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                  -- STREAM_PROJECT  |PARTITIONED|
                                    -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                      -- BTREE_SEARCH (test.ds6.idx6_dt)  |PARTITIONED|
                                        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                                          -- ASSIGN  |PARTITIONED|
                                            -- EMPTY_TUPLE_SOURCE  |PARTITIONED|