Run

1. strat docker-compose
2. Run com.nsheremet.trino.ApplicationTest.deduplicates it will create and populate tables
3. Run sql

   select count(*) as total, 'iceberg' as catalog from iceberg.temp.ns_mytable
   union all
   select count(*) as total, 'clickhouse' as catalog from clickhouse.dev.ns_mytable

It should return 19481297 for both tables but it returns:

total	catalog
38962594	clickhouse
19481297	iceberg

So ClickHouse has twice more data then Trino