sql pivot、unpivot和partition by用法

演示脚本

IF not exists(SELECT 1 from sys.sysobjects where name = 'Student' AND type = 'U')
BEGIN
    CREATE table Student(
        ID            int            identity    primary key,
        ClassID        int                        default 0    ,    --班级ID
        CourseName    nvarchar(20)                        ,    --课程
        Name        nvarchar(20)                        ,    --姓名
        Score        tinyint                    default 0        --成绩
    )
END
GO

IF not exists(SELECT 1 from Student)
begin
    INSERT INTO Student(ClassID,CourseName,Name,Score)
    SELECT 1,'数学','小红',80
    UNION ALL
    SELECT 1,'语文','小红',90
    UNION ALL
    SELECT 1,'英语','小红',88
    UNION ALL
    SELECT 1,'数学','小明',91
    UNION ALL
    SELECT 1,'语文','小明',78
    UNION ALL
    SELECT 1,'英语','小明',82
    UNION ALL
    SELECT 2,'数学','小强',67
    UNION ALL
    SELECT 2,'语文','小强',76
    UNION ALL
    SELECT 2,'英语','小强',58
    UNION ALL
    SELECT 2,'数学','小丽',87
    UNION ALL
    SELECT 2,'语文','小丽',94
    UNION ALL
    SELECT 2,'英语','小丽',98
    end
GO

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