sql擷取每門課程成績最好的學生資訊

1.相關資料表

Score表

[User]表

SQL語句如下：

--查詢出各科成績最好的學生資訊

--自連接配接

--SELECT TOP 1 * FROM Score B WHERE B.ScoreName = ‘數學‘ ORDER BY B.Score DESC

SELECT A.ID,U.Name,A.ScoreName,A.Score

FROM Score A,[User]U

WHERE UID IN (SELECT TOP 1 UID

                       FROM Score B

                      WHERE B.ScoreName = A.ScoreName

                      ORDER BY B.Score DESC) AND A.UID=U.ID

ORDER BY A.ScoreName, A.Score DESC

查詢結果如下圖：