快速掌握SQL Server数据库快照的工作原理

USE master 
GO 
IF EXISTS(SELECT name from 
sysdatabases where [name] = 'SourceDatabase') 
DROP DATABASE SourceDatabase 
GO 
CREATE DATABASE SourceDatabaseON PRIMARY 
( 
NAME = SourceDatabase_Data, 
FILENAME = 'C:SQLServerSourceDatabase_Data.mdf' 
) LOG ON 
( 
NAME = SourceDatabase_Log, 
FILENAME = 'C:SQLServerSourceDatabase_Log.ldf' 
) 
GO

USE SourceDatabase 
　　GO 
　　IF OBJECT_ID('SalesHistory')>0 DROP 
TABLE SalesHistory 
　　GO 
　　CREATE TABLE SalesHistory 
　　(SaleID INT IDENTITY(1,1), 
　　Product CHAR(150), SaleDate DATETIME, 
　　SalePrice MONEY) 
　　DECLARE @i INT 
　　SET @i = 1 
　　WHILE (@i <=10000) 
　　BEGIN INSERT INTO SalesHistory 
　　(Product, SaleDate, SalePrice) 
　　VALUES ('Computer', DATEADD(mm, @i, '3/11/1919'), 
　　DATEPART(ms, GETDATE()) + (@i + 57) ) 
　　INSERT INTO SalesHistory 
　　(Product, SaleDate, SalePrice) 
　　VALUES ('BigScreen', DATEADD(mm, @i, '3/11/1927'), 
　　DATEPART(ms, GETDATE()) + (@i + 13) ) 
　　INSERT INTO SalesHistory 
　　(Product, SaleDate, SalePrice) 
　　VALUES ('PoolTable', DATEADD(mm, @i, '3/11/1908'), 
　　DATEPART(ms, GETDATE()) + (@i + 29) ) 
　　SET @i = @i + 1 
　　END 
　　GO