PIVOT syntax:
CREATE TABLE Score ( StuNo varchar(10), StuName varchar(50), CourseName varchar(50), Score int); GO INSERT INTO Score (StuNo, StuName, CourseName, Score) VALUES (‘1‘, ‘Tom‘, ‘Math‘, 80); INSERT INTO Score (StuNo, StuName, CourseName, Score) VALUES (‘1‘, ‘Tom‘, ‘English‘, 82); INSERT INTO Score (StuNo, StuName, CourseName, Score) VALUES (‘1‘, ‘Tom‘, ‘Geography‘, 84); INSERT INTO Score (StuNo, StuName, CourseName, Score) VALUES (‘2‘, ‘Jone‘, ‘Math‘, 79); INSERT INTO Score (StuNo, StuName, CourseName, Score) VALUES (‘2‘, ‘Jone‘, ‘English‘, 88); INSERT INTO Score (StuNo, StuName, CourseName, Score) VALUES (‘2‘, ‘Jone‘, ‘Geography‘, 86); GO SELECT * FROM Score;
--Change row to column:
SELECT StuNo, StuName, Math, English, Geography FROM Score PIVOT ( MAX(Score) FOR CourseName in (Math, English, Geography) ) AS ScoreList ORDER BY StuNo;
DROP TABLE Score; GO
CREATE TABLE ScoreList ( StuNo varchar(10), StuName varchar(50), Math int, English int, Geography int); GO INSERT INTO ScoreList (StuNo, StuName, Math, English, Geography) VALUES (‘1‘, ‘Tom‘, 80, 82, 84); INSERT INTO ScoreList (StuNo, StuName, Math, English, Geography) VALUES (‘2‘, ‘Jone‘, 79, 88, 86); GO SELECT * FROM ScoreList;
--Change column values to row: SELECT StuNo, StuName, CourseName, Score FROM ScoreList UNPIVOT ( Score FOR CourseName in (Math, English, Geography) ) AS ScorePvtTable ORDER BY StuNo;
DROP TABLE ScoreList; GO
原文:http://www.cnblogs.com/wslm/p/3993347.html