SQL常用语句简单

数据库脚本

USE [Test]
GO
/****** Object:  Table [dbo].[Class]    Script Date: 2017/6/29 13:17:14 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Class](
    [ClassID] [int] NULL,
    [ClassName] [nvarchar](50) NULL
) ON [PRIMARY]

GO
/****** Object:  Table [dbo].[Student]    Script Date: 2017/6/29 13:17:14 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Student](
    [StuID] [int] NOT NULL,
    [StuName] [nvarchar](50) NULL,
    [StuAge] [int] NULL,
    [ClassID] [int] NULL
) ON [PRIMARY]

GO
INSERT [dbo].[Class] ([ClassID], [ClassName]) VALUES (1, N'班级1')
GO
INSERT [dbo].[Class] ([ClassID], [ClassName]) VALUES (2, N'班级2')
GO
INSERT [dbo].[Class] ([ClassID], [ClassName]) VALUES (3, N'班级3')
GO
INSERT [dbo].[Class] ([ClassID], [ClassName]) VALUES (4, N'班级4')
GO
INSERT [dbo].[Class] ([ClassID], [ClassName]) VALUES (5, N'班级5')
GO
INSERT [dbo].[Class] ([ClassID], [ClassName]) VALUES (2, N'班级2')
GO
INSERT [dbo].[Student] ([StuID], [StuName], [StuAge], [ClassID]) VALUES (1, N'张三', 19, 1)
GO
INSERT [dbo].[Student] ([StuID], [StuName], [StuAge], [ClassID]) VALUES (2, N'李四', 18, 1)
GO
INSERT [dbo].[Student] ([StuID], [StuName], [StuAge], [ClassID]) VALUES (3, N'王五', 16, 2)
GO
INSERT [dbo].[Student] ([StuID], [StuName], [StuAge], [ClassID]) VALUES (4, N'啦啦', 20, 7)
GO
INSERT [dbo].[Student] ([StuID], [StuName], [StuAge], [ClassID]) VALUES (5, N'王五2', 16, 2)
GO
INSERT [dbo].[Student] ([StuID], [StuName], [StuAge], [ClassID]) VALUES (5, N'王五3', 16, 2)
GO
INSERT [dbo].[Student] ([StuID], [StuName], [StuAge], [ClassID]) VALUES (5, N'王五3', 16, 2)
GO

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