| 300 || Paris | Jean | 100 |我想编写一个查询,该查询将产生以下结果----------+SELECT t1.City, User, AmtPerUser, AmtPerCity (SELECT City, User, SUM(Amt) as AmtPerUser FROM mytable GROUP BY City, User) t1 (SELECT
你好,我们在Debian 10上使用nextcloud手工使用一个mysql-db作为后端。在磁盘上创建的临时表: 99% (磁盘/ 48K总数上的48K)(我最近重新启动了mysql-服务器)./tuning-primer.sh -- MYSQL PERFORMANCE TUNING PRIMER --
- By: Mat
$query = mysql_query("SELECT id, SUM(hours_night), SUM(hours_days) FROM table WHERE invoiceID='".mysql_real_escape_string($invoiceID)."'") or die(mysql_error());
$totalhours_night
目的:我想打印下面SQL语句的输出。通常我使用rs.getString("rowname"),但是SUM没有指定列,所以我对如何做到这一点有点困惑。SELECT SUM(HOURS) FROM RESOURCE WHERE DATE = '02/08/2013'; --Actual SQL Query as used below
ResultSetrs = stat.executeQuery("SELECT SUM(HOURS) FR