例如,One mysql server machine A has One table called "tableA" under in a database called databaseA, anothermysql server machine B has one table called "tableB" under in a database called databaseB.如何加入tableA
我正在努力在mySQL或SQL Server中连接多个表,并保持快速的性能。songName|singerName|Sex01|diamond|Rihanna|F 我的查询是这样的srss.songID = s.songID AND ORDER BY s.songID
它的运行速度非常非常慢..有没有办法让这个查询变得更简单或更高效
我创建了这两个表: `GameGenre` varchar(20) NOT NULL,(`GameName`) REFERENCES `Game` (`GameName`) ON DELETE CASCADE ON UPDATE CASCADE我的查询需要基于GameScoreTotal.OverallScoreTotal从游戏表中返回前十名游戏的所有信息。我尝试过的<em