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  • MSSQL横列转纵列

       上篇我们说到了纵列转横列,这篇讲下横列转纵列,具体代码:

       1.建表

    CREATE TABLE [dbo].[EndLongChangeAcross](
        [Id] [int] IDENTITY(1,1) NOT NULL,
        [Name] [nvarchar](50) NOT NULL,
        [Chinese] [int] NOT NULL,
        [English] [int] NOT NULL,
        [Math] [int] NOT NULL,
     CONSTRAINT [PK_EndLongChangeAcross] PRIMARY KEY CLUSTERED 
    (
        [Id] ASC
    )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
    ) ON [PRIMARY]
    
    GO
    SET IDENTITY_INSERT [dbo].[EndLongChangeAcross] ON 
    
    GO
    INSERT [dbo].[EndLongChangeAcross] ([Id], [Name], [Chinese], [English], [Math]) VALUES (1, N'张三', 89, 12, 82)
    GO
    INSERT [dbo].[EndLongChangeAcross] ([Id], [Name], [Chinese], [English], [Math]) VALUES (2, N'李四', 78, 45, 24)
    GO
    SET IDENTITY_INSERT [dbo].[EndLongChangeAcross] OFF
    GO
    ALTER TABLE [dbo].[EndLongChangeAcross] ADD  CONSTRAINT [DF_EndLongChangeAcross_Chinese]  DEFAULT ((0)) FOR [Chinese]
    GO
    ALTER TABLE [dbo].[EndLongChangeAcross] ADD  CONSTRAINT [DF_EndLongChangeAcross_English]  DEFAULT ((0)) FOR [English]
    GO
    ALTER TABLE [dbo].[EndLongChangeAcross] ADD  CONSTRAINT [DF_EndLongChangeAcross_Math]  DEFAULT ((0)) FOR [Math]
    GO

    2.具体SQL

    SELECT  Name ,
            '语文' AS 'Subject',
            Chinese AS 'Score'
    FROM    dbo.EndLongChangeAcross
    UNION ALL
    SELECT  Name ,
            '英语',
            English AS 'Score'
    FROM    dbo.EndLongChangeAcross
    UNION ALL
    SELECT  Name ,
            '数学' ,
            Math AS 'Score'
    FROM    dbo.EndLongChangeAcross
    ORDER BY Name DESC

    具体效果:

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  • 原文地址:https://www.cnblogs.com/zuqing/p/4878823.html
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