ClickHouse/tests/performance/questdb_sum_int32.xml

<test>
    <settings>
        <max_threads>4</max_threads>
        <max_memory_usage>20G</max_memory_usage>
        <use_uncompressed_cache>1</use_uncompressed_cache>
        <merge_tree_max_rows_to_use_cache>2000000000</merge_tree_max_rows_to_use_cache>
        <merge_tree_max_bytes_to_use_cache>10G</merge_tree_max_bytes_to_use_cache>
    </settings>

    <substitutions>
        <substitution>
            <name>engine</name>
            <values>
                <value>Memory</value>
                <value>MergeTree ORDER BY tuple()</value>
            </values>
        </substitution>
        <substitution>
            <name>type</name>
            <values>
                <value>Int32</value>
                <value>Int32 NULL</value>
            </values>
        </substitution>
    </substitutions>

    <create_query>CREATE TABLE `zz_{type}_{engine}` (x {type}) ENGINE {engine}</create_query>
    <fill_query>INSERT INTO `zz_{type}_{engine}` SELECT rand() FROM numbers_mt(1000000000) SETTINGS max_insert_threads = 8</fill_query>
    <fill_query>OPTIMIZE TABLE `zz_{type}_MergeTree ORDER BY tuple()` FINAL</fill_query>

    <query>SELECT sum(x) FROM `zz_{type}_{engine}`</query>

    <drop_query>DROP TABLE IF EXISTS `zz_{type}_{engine}`</drop_query>
</test>