实验环境:
DB is PostgreSQL version 8.2.15
JDK1.8
测试一
使用JDBC查询一个SQL:
public static void test1(String url, Properties props){ String sql = "SELECT l.src_ip, l.location_id, " + "SUM(l.us_bytes) as up_usage, " + "SUM(l.ds_bytes) as down_usage, " + "(SUM(l.us_bytes) + SUM(l.ds_bytes) ) as total_usage " + "FROM unmapped_endpoint_location_hours l " + "where l.org_id = 195078 " + "AND date_time >= '2017-04-01 00:00:00.0' AND date_time < '2017-04-08 00:00:00.0' " + "AND l.location_id in (2638,2640,2654 ) " + "GROUP BY l.src_ip, l.location_id "; &nbs