datastore/tests/performance/countIf.xml

<test>
    <query>SELECT countIf(number % 2) FROM numbers(100000000)</query>

    <query>
        SELECT countIf(key IS NOT NULL)
        FROM
        (
            SELECT materialize(toNullable(1)) AS key
            FROM numbers(100000000)
        )
    </query>

    <query>
        SELECT countIf(key IS NOT NULL)
        FROM
        (
            SELECT materialize(CAST(NULL, 'Nullable(Int8)')) AS key
            FROM numbers(100000000)
        )
    </query>

    <create_query>CREATE TABLE IF NOT EXISTS hits_sparse(AdvEngineID Int16) ENGINE = MergeTree() ORDER BY tuple()</create_query>
    <fill_query>INSERT INTO hits_sparse SELECT AdvEngineID FROM hits_100m_single</fill_query>
    <fill_query>OPTIMIZE TABLE hits_sparse FINAL</fill_query>
    <drop_query>DROP TABLE hits_sparse</drop_query>

    <query>SELECT countIf(AdvEngineID != 0) FROM hits_sparse;</query>

</test>