ClickHouse/tests/performance/quantile.xml

<test>
    <substitutions>
        <substitution>
           <name>key</name>
           <values>
               <value>SearchEngineID</value>
               <value>RegionID</value>
               <value>SearchPhrase</value>
           </values>
        </substitution>

        <!-- For some keys, the query is slower, so we choose smaller dataset. -->
        <substitution>
           <name>key_slow</name>
           <values>
               <value>ClientIP</value>
           </values>
        </substitution>

        <substitution>
           <name>func</name>
           <values>
               <value>quantile</value>
               <value>quantileExact</value>
               <value>quantileTDigest</value>
               <value>quantileTiming</value>
               <value>quantileBFloat16</value>
           </values>
       </substitution>
    </substitutions>

    <query>SELECT {key} AS k, {func}(ResolutionWidth) FROM hits_100m_single GROUP BY k FORMAT Null</query>
    <query>SELECT {key_slow} AS k, {func}(ResolutionWidth) FROM hits_10m_single GROUP BY k FORMAT Null</query>
</test>