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数据库
1、创建数据库
- USE master ;
- GO
- CREATE DATABASE Sales
- ON
- ( NAME = Sales_dat,
- FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\DATA\saledat.mdf',
- SIZE = 10,
- MAXSIZE = 50,
- FILEGROWTH = 5 )
- LOG ON
- ( NAME = Sales_log,
- FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\DATA\salelog.ldf',
- SIZE = 5MB,
- MAXSIZE = 25MB,
- FILEGROWTH = 5MB ) ;
- GO
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2、查看数据库
- SELECT name, database_id, create_date
- FROM sys.databases ;
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3、删除数据库
表
1、创建表
- CREATE TABLE PurchaseOrderDetail
- (
- ID uniqueidentifier NOT NULL
- ,LineNumber smallint NOT NULL
- ,ProductID int NULL
- ,UnitPrice money NULL
- ,OrderQty smallint NULL
- ,ReceivedQty float NULL
- ,RejectedQty float NULL
- ,DueDate datetime NULL
- );
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2、删除表
- DROP TABLE dbo.PurchaseOrderDetail;
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3、重命名表
- EXEC sp_rename 'Sales.SalesTerritory', 'SalesTerr';
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列
1、添加列
- ALTER TABLE dbo.doc_exa ADD column_b VARCHAR(20) NULL, column_c INT NULL ;
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2、删除列
- ALTER TABLE dbo.doc_exb DROP COLUMN column_b;
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3、重命名列
- EXEC sp_rename 'Sales.SalesTerritory.TerritoryID', 'TerrID', 'COLUMN';
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约束
1、主键
- --在现有表中创建主键
- ALTER TABLE Production.TransactionHistoryArchive
- ADD CONSTRAINT PK_TransactionHistoryArchive_TransactionID PRIMARY KEY CLUSTERED (TransactionID);
- --在新表中创建主键
- CREATE TABLE Production.TransactionHistoryArchive1
- (
- TransactionID int IDENTITY (1,1) NOT NULL
- , CONSTRAINT PK_TransactionHistoryArchive_TransactionID PRIMARY KEY CLUSTERED (TransactionID)
- )
- ;
- --查看主键
- SELECT name
- FROM sys.key_constraints
- WHERE type = 'PK' AND OBJECT_NAME(parent_object_id) = N'TransactionHistoryArchive';
- GO
- --删除主键
- ALTER TABLE Production.TransactionHistoryArchive
- DROP CONSTRAINT PK_TransactionHistoryArchive_TransactionID;
- GO
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视图
1、创建视图
- CREATE VIEW V_EmployeeHireDate
- AS
- SELECT p.FirstName, p.LastName, e.HireDate
- FROM HumanResources.Employee AS e JOIN Person.Person AS p
- ON e.BusinessEntityID = p.BusinessEntityID ;
- GO
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2、删除视图
- DROP VIEW V_EmployeeHireDate;
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存储过程
1、创建存储过程
- CREATE PROCEDURE P_UspGetEmployeesTest
- @LastName nvarchar(50),
- @FirstName nvarchar(50)
- AS
- SELECT FirstName, LastName, Department
- FROM HumanResources.vEmployeeDepartmentHistory
- WHERE FirstName = @FirstName AND LastName = @LastName
- AND EndDate IS NULL;
- GO
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2、删除存储过程
- DROP PROCEDURE P_UspGetEmployeesTest;
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3、执行存储过程
- EXEC P_UspGetEmployeesTest N'Ackerman', N'Pilar';
- -- Or
- EXEC P_UspGetEmployeesTest @LastName = N'Ackerman', @FirstName = N'Pilar';
- GO
- -- Or
- EXECUTE P_UspGetEmployeesTest @FirstName = N'Pilar', @LastName = N'Ackerman';
- GO
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4、重命名存储过程
- EXEC sp_rename 'P_UspGetAllEmployeesTest', 'P_UspEveryEmployeeTest2';
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5、带有输出参数的存储过程
- CREATE PROCEDURE P_UspGetEmployeeSalesYTD
- @SalesPerson nvarchar(50),
- @SalesYTD money OUTPUT
- AS
- SELECT @SalesYTD = SalesYTD
- FROM SalesPerson AS sp
- JOIN vEmployee AS e ON e.BusinessEntityID = sp.BusinessEntityID
- WHERE LastName = @SalesPerson;
- RETURN
- GO
- --调用
- DECLARE @SalesYTDBySalesPerson money;
- EXECUTE P_UspGetEmployeeSalesYTD
- N'Blythe',
- @SalesYTD = @SalesYTDBySalesPerson OUTPUT;
- GO
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数据类型
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