在SQL中重复列值到行

Question

我在想如何将包含重复列值的列转换为MSSQL中的行。这是我正在使用的一个例子。

CREATE TABLE Colors 
(
    Time_ Time, 
    Color varchar(6), 
    count int 
) 

INSERT INTO Colors VALUES ('10:00', 'Red', 2); 
INSERT INTO Colors VALUES ('10:00', 'Orange', 3); 
INSERT INTO Colors VALUES ('10:00', 'Yellow', 6); 
INSERT INTO Colors VALUES ('10:00', 'Green', 9); 
INSERT INTO Colors VALUES ('10:00', 'Blue', 2); 
INSERT INTO Colors VALUES ('11:00', 'Red', 3); 
INSERT INTO Colors VALUES ('11:00', 'Orange', 4); 
INSERT INTO Colors VALUES ('11:00', 'Yellow', 6); 
INSERT INTO Colors VALUES ('11:00', 'Green', 7); 
INSERT INTO Colors VALUES ('11:00', 'Blue', 1); 
INSERT INTO Colors VALUES ('12:00', 'Red', 2); 
INSERT INTO Colors VALUES ('12:00', 'Orange', 2); 
INSERT INTO Colors VALUES ('12:00', 'Yellow', 7); 
INSERT INTO Colors VALUES ('12:00', 'Green', 9); 
INSERT INTO Colors VALUES ('12:00', 'Blue', 4); 

而且SQLFiddle：http://sqlfiddle.com/#!3/48657/1

我正在寻找的是一个表，其中的行是Time_，红，橙，黄，绿，蓝。因此，这将是这个样子：

任何帮助，将不胜感激。

Answer 1

SELECT Time_, 
     Red, 
     Orange, 
     Yellow, 
     Green, 
     Blue 
FROM 
    (
     SELECT Time_, Color, Count 
     FROM Colors 
    ) orgData 
    PIVOT 
    (
     MAX(Count) 
     FOR Color IN (Red, Orange, Yellow, Green, Blue) 
    ) pvt 

• SQLFiddle Demo