datastore/tests/performance/window_function_with_order.xml

<test>

  <settings>
    <max_threads>8</max_threads>
  </settings>

  <create_query>CREATE TABLE t(a UInt32, b UInt32) ENGINE=MergeTree() ORDER BY a</create_query>

  <fill_query>INSERT INTO t SELECT number, number % 12345 FROM numbers_mt(1e7)</fill_query>

  <query>
    SELECT a, b, ROW_NUMBER() OVER (PARTITION BY a ORDER BY b DESC) AS rn
    FROM t
    SETTINGS query_plan_reuse_storage_ordering_for_window_functions=0
    FORMAT Null
  </query>

  <query>
    SELECT a, b, ROW_NUMBER() OVER (PARTITION BY a) AS rn
    FROM t
    SETTINGS query_plan_reuse_storage_ordering_for_window_functions=0
    FORMAT Null
  </query>

  <query>
    SELECT a, b, ROW_NUMBER() OVER (PARTITION BY a ORDER BY b DESC) AS rn
    FROM t
    SETTINGS query_plan_reuse_storage_ordering_for_window_functions=1
    FORMAT Null
  </query>

  <query>
    SELECT a, b, ROW_NUMBER() OVER (PARTITION BY a) AS rn
    FROM t
    SETTINGS query_plan_reuse_storage_ordering_for_window_functions=1
    FORMAT Null
  </query>

  <drop_query>DROP TABLE IF EXISTS t</drop_query>

</test>