datastore/tests/performance/uniq_with_key_dist.xml

<test>
    <substitutions>
        <substitution>
           <name>uniq_keys</name>
           <values>
               <value>100</value>
               <value>500</value>
               <value>1000</value>
               <value>5000</value>
               <value>10000</value>
               <value>50000</value>
               <value>100000</value>
           </values>
        </substitution>
    </substitutions>

    <create_query>create table t_{uniq_keys}(a UInt64, b UInt64) engine=MergeTree order by tuple()</create_query>

    <fill_query>insert into t_{uniq_keys} select number, number % {uniq_keys} from numbers_mt(5e6)</fill_query>

    <query>SELECT uniqExact(a) FROM remote('127.0.0.{{1,2}}', default, t_{uniq_keys}) group by b</query>

    <query>SELECT RegionID, COUNT(DISTINCT UserID) AS u FROM remote('127.0.0.{{1,2}}', default, hits_100m_single) WHERE UserID &lt; 2e18 GROUP BY RegionID ORDER BY u DESC LIMIT 10</query>

    <drop_query>drop table t_{uniq_keys}</drop_query>
</test>