在软件开发的初始阶段,开发商们总是想把整个系统的最小的细节设计好了,然后再去单线程的编写代码。这样软件开发完成需要很长时间,但开发商们一直都在这么做。 l\'{S\\h5dp< gG@t.9c>P
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CREATE DATABASE [Test_Cross_1] ON PRIMARY ( NAME = N'Test_Cross_1', FILENAME = N'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDATATest_Cross_1.mdf', SIZE = 2048KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB ) LOG ON ( NAME = N'Test_Cross_1_log', FILENAME = N'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDATATest_Cross_1_log.ldf', SIZE = 1024KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)GO Yv9\v ?Oo,
USE [Test_Cross_1] a>)t@~j
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CREATE TABLE [dbo].[Orders_1]( [OrderNumber] [int] NOT NULL, [OrderDate] [datetime] NOT NULL, CONSTRAINT [PK_Orders_1] PRIMARY KEY CLUSTERED ( [OrderNumber] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] :`R+-
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CREATE DATABASE [Test_Cross_2] ON PRIMARY ( NAME = N'Test_Cross_2', FILENAME = N'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDATATest_Cross_2.mdf', SIZE = 2048KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB ) LOG ON ( NAME = N'Test_Cross_2_log', FILENAME = N'C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDATATest_Cross_2_log.ldf', SIZE = 1024KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)GO HuDt^W
CREATE TABLE [dbo].[Orders_2]( [OrderNo] [int] NOT NULL, [OrderDate] [datetime] NOT NULL CONSTRAINT [DF_Orders_2_OrderDate] DEFAULT (getdate()), CONSTRAINT [PK_Orders_2] PRIMARY KEY CLUSTERED ( [OrderNo] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
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SELECT * FROM Test_Cross_1.dbo.Orders_1INNER JOIN Test_Cross_2.dbo.Orders_2 c2#gd ]%>
ON Test_Cross_1.dbo.Orders_1.OrderNumber
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SELECT * FROM Test_Cross_1.dbo.Orders_1LEFT OUTER JOIN Test_Cross_2.dbo.Orders_2 mk.6D<g
ON Test_Cross_1.dbo.Orders_1.OrderNumber
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SELECT * FROM Test_Cross_2.dbo.Orders_2LEFT OUTER JOIN Test_Cross_1.dbo.Orders_1 CwDOFC)mA3
ON Test_Cross_2.dbo.Orders_2.OrderNo =