SELECT id, (SELECT Score FROM Table_1 WHERE KeMu=‘数学‘ AND id=a.id)as 数学, (SELECT Score FROM Table_1 WHERE KeMu=‘语文‘ AND id=a.id)AS 语文, (SELECT Score FROM Table_1 WHERE KeMu=‘英语‘ AND id=a.id)AS 英语 FROM Table_1 a GROUP BY a.id
原文：http://www.cnblogs.com/zhubaobao/p/4137076.html