@Test
public void testSelectGlobalAggregates() throws Exception {
SQLResponse response = transportExecutor.exec(
"select sum(size), min(size), max(size), avg(size) from sys.shards");
assertEquals(1L, response.rowCount());
assertEquals(4, response.rows()[0].length);
assertNotNull(response.rows()[0][0]);
assertNotNull(response.rows()[0][1]);
assertNotNull(response.rows()[0][2]);
assertNotNull(response.rows()[0][3]);
}