ClickHouse/tests/performance/format_date_time.xml

<test>
    <substitutions>
       <substitution>
           <name>format</name>
           <values>
               <value>%F %T</value>
               <value>%H:%M:%S</value>
               <value>%Y-%m-%d %H:%M:%S</value>
               <value>%m/%d/%Y %H:%M:%S</value>
               <value>Hello</value>
               <value>The current time is: %I:%M %p</value>
           </values>
       </substitution>
    </substitutions>

    <query>SELECT count() FROM numbers(10000000) WHERE NOT ignore(toDateTime('2017-01-01 00:00:00') + number % 100000000 + rand() % 100000 AS t, formatDateTime(t, '{format}'))</query>
</test>