-- 原表查询,字段较多SELECT SUM(`gift_num`*`gift_balance`) AS `balance`,`room_id`FROM `send_gift_history_info` WHERE `create_date` BETWEEN '2016-10-26 00:00:00' AND '2016-11-14 23:59:59'GROUP BY `room_id` ORDER BY balance DESC LIMIT 0,20;20 row(s) returnedExecution Time : 2 m...【阅读全文】
Superset is a data exploration platform designed to be visual, intuitive and interactive [this project used to be named Caravel, and Panoramix in the past]Superset(Caravel)是由Airbnb(知名在线房屋短租公司)开源的数据分析与可视化平台(曾用名Caravel、Panoramix),该工具主要特点是可自助分析、自定义仪...【阅读全文】
以下是Tomcat运行是所出现的错误,一开始还以为是Struts的问题,因为在第一行错误的时候说是对象初始化错误,所以一直没有往下看!!!最后感觉快要放弃的时候看了一下下面的错误!!!没有想到是hibernate.cfg.xml的错误!!以后记下了!!!Caused by: org.hibernate.HibernateException: Could not parse con...【阅读全文】