presto-benchmark/src/main/java/io/prestosql/benchmark/SqlDistinctSingleField.java/SqlDistinctSingleField/SqlDistinctSingleField
class SqlDistinctSingleField:    public SqlDistinctSingleField(LocalQueryRunner localQueryRunner)
    {
        super(localQueryRunner, "sql_distinct_single", 10, 20, "SELECT DISTINCT shippriority FROM orders");
    }