presto-benchmark/src/main/java/io/prestosql/benchmark/SqlDistinctMultipleFields.java/SqlDistinctMultipleFields/SqlDistinctMultipleFields
class SqlDistinctMultipleFields:    public SqlDistinctMultipleFields(LocalQueryRunner localQueryRunner)
    {
        super(localQueryRunner, "sql_distinct_multi", 4, 10, "SELECT DISTINCT orderpriority, shippriority FROM orders");
    }