ClickHouse/tests/integration/test_startup_scripts/configs/config.d/startup_scripts.xml

<clickhouse>
    <startup_scripts>
        <scripts>
            <query>CREATE ROLE OR REPLACE testrole</query>
        </scripts>
        <scripts>
            <query>GRANT CREATE USER, ALTER USER, DROP USER, SHOW USERS, SHOW CREATE USER ON *.* TO 'testrole' WITH GRANT OPTION;</query>
        </scripts>
        <scripts>
            <query>CREATE TABLE TestTable (id UInt64) ENGINE=TinyLog</query>
            <condition>SELECT 1;</condition>
        </scripts>
        <scripts>
            <query>SELECT * FROM system.query_log LIMIT 1</query>
        </scripts>
    </startup_scripts>
</clickhouse>