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mssql清空数据和添加主键约束语法

时间:2020-09-24 00:02:06      阅读:55      评论:0      收藏:0      [点我收藏+]

标签:spi   clu   code   class   tab   col   create   trunc   sql   

 
 
 
1、原始表
CREATE TABLE [dbo].[BASE_UserInDept](
    [HospitalID] [int] NOT NULL,
    [UserID] [int] NOT NULL,
    [DeptCode] [varchar](10) NOT NULL,
    [RoleID] [int] NOT NULL
) ON [PRIMARY]  
GO

 

2、可以在建表的时候添加主键
CREATE TABLE [dbo].[BASE_UserInDept](
 [HospitalID] [int] NOT NULL,
 [UserID] [int] NOT NULL,
 [DeptCode] [varchar](10) NOT NULL,
 [RoleID] [int] NOT NULL,
--添加主键约束
CONSTRAINT [PK_BASE_UserInDept] PRIMARY KEY CLUSTERED ( [HospitalID] ASC, [UserID] ASC, [DeptCode] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY] ) ON [PRIMARY] GO

--添加主键DF_BASE_UserInDept默认约束
ALTER TABLE [dbo].[BASE_UserInDept] ADD CONSTRAINT [DF_BASE_UserInDept] DEFAULT ((0)) FOR [RoleID] GO

 3、也可以直接使用

ALTER TABLE table ADD CONSTRAINT 键名 PRIMARY KEY ...添加

ALTER TABLE [dbo].[BASE_UserInDept] ADD  CONSTRAINT [PK_BASE_UserInDept] PRIMARY KEY CLUSTERED 
(
 [HospitalID] ASC,
 [UserID] ASC,
 [DeptCode] ASC
)ON [PRIMARY]

 

4、清空表数据语法

TRUNCATE TABLE name

 

mssql清空数据和添加主键约束语法

标签:spi   clu   code   class   tab   col   create   trunc   sql   

原文地址:https://www.cnblogs.com/betobe/p/13714874.html

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