ClickHouse/tests/performance/optimize_window_funnel.xml

<test>
    <create_query>CREATE TABLE action(uid UInt64, event String, time DateTime) ENGINE = MergeTree ORDER BY uid</create_query>

    <fill_query>INSERT INTO action SELECT arrayJoin(groupArray(number)), 'a', now() from numbers(1000000)</fill_query>
    <fill_query>INSERT INTO action SELECT arrayJoin(groupArray(number)), 'b', now() + INTERVAL 6 hour from numbers(1000000)</fill_query>
    <fill_query>INSERT INTO action SELECT arrayJoin(groupArray(number)), 'c', now() + INTERVAL 12 hour from numbers(1000000)</fill_query>
    <fill_query>INSERT INTO action SELECT arrayJoin(groupArray(number)), 'd', now() + INTERVAL 18 hour from numbers(1000000)</fill_query>

    <query>SELECT level, count() from (select windowFunnel(86400)(time, event='a', event='b', event='c', event='d') level from action group by uid) group by level FORMAT Null</query>

    <drop_query>DROP TABLE IF EXISTS action</drop_query>
</test>