assertEquals(112, response.rows()[0][0]);
response = executor.exec("select min(name) from characters");
assertEquals(1, response.rowCount());
assertEquals("min(name)", response.cols()[0]);
assertEquals("Anjie", response.rows()[0][0]);
response = executor.exec("select avg(age) as median_age from characters");
assertEquals(1, response.rowCount());
assertEquals("median_age", response.cols()[0]);