在SSIS 2012中使用CDC（数据变更捕获）

/*
-- =============================================
-- 创建测试数据库及数据表，借助AdventureWorksDW2012示例数据库
---Generate By downmoon(邀月),3w@live.cn
-- =============================================
*/
--Create database CDCTest
--GO
--USE [CDCTest]
--GO

--SELECT * INTO DimCustomer_CDC
--FROM [AdventureWorksDW2012].[dbo].[DimCustomer]
--WHERE CustomerKey < 11500;

--select * from DimCustomer_CDC;

/*
-- =============================================
-- 启用数据库级别CDC，只对企业版和开发版有效
---Generate By downmoon(邀月),3w@live.cn
-- =============================================
*/
USE
 [CDCTest]
GO

EXEC sys.sp_cdc_enable_db
GO

-- add a primary key to the DimCustomer_CDC table so we can enable support for net changes
IF NOT EXISTS (SELECT * FROM sys.indexes WHERE object_id = 
OBJECT_ID(N‘[dbo].[DimCustomer_CDC]‘) AND name = N‘PK_DimCustomer_CDC‘)
  ALTER TABLE [dbo].[DimCustomer_CDC] ADD CONSTRAINT 
[PK_DimCustomer_CDC] PRIMARY KEY CLUSTERED 
(
    [CustomerKey] ASC
)
GO

/*
-- =============================================
-- 启用表级别CDC
---Generate By downmoon(邀月),3w@live.cn
-- =============================================
*/
EXEC sys.sp_cdc_enable_table 
@source_schema = N‘dbo‘,
@source_name = N‘DimCustomer_CDC‘,
@role_name = N‘cdc_admin‘,
@supports_net_changes = 1

GO

/*
-- =============================================
-- 创建一个目标表，与源表(Source)有相同的表结构
--注意，在生产环境中，完全可以是不同的实例或服务器，本例为了方便，在同一个数据库实例的同一个数据库中演示
---Generate By downmoon(邀月),3w@live.cn
-- =============================================
*/
SELECT TOP 0 * INTO DimCustomer_Destination
FROM DimCustomer_CDC
--select @@version;
select * from DimCustomer_Destination;

-- =============================================
-- 我们使用两个包来完成示例，一个初始包完成数据的初始加载，一个增量包完成数据的变更捕获
---Generate By downmoon(邀月),3w@live.cn
-- =============================================

--Create stage Tables
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N‘[dbo].[stg_DimCustomer_UPDATES]‘) AND type in (N‘U‘))
BEGIN
   SELECT TOP 0 * INTO stg_DimCustomer_UPDATES
   FROM DimCustomer_Destination
END

IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N‘[dbo].[stg_DimCustomer_DELETES]‘) AND type in (N‘U‘))
BEGIN
   SELECT TOP 0 * INTO stg_DimCustomer_DELETES
   FROM DimCustomer_Destination
END

-- batch update
UPDATE dest
SET 
    dest.FirstName = stg.FirstName, 
    dest.MiddleName = stg.MiddleName,
    dest.LastName = stg.LastName, 
    dest.YearlyIncome = stg.YearlyIncome
FROM 
    [DimCustomer_Destination] dest, 
    [stg_DimCustomer_UPDATES] stg
WHERE 
    stg.[CustomerKey] = dest.[CustomerKey]

-- batch delete
DELETE FROM [DimCustomer_Destination]
  WHERE[CustomerKey] IN 
(
    SELECT [CustomerKey]
    FROM [dbo].[stg_DimCustomer_DELETES]
)

-- truncate table 
truncate table  [dbo].[stg_DimCustomer_DELETES]
truncate table  [dbo].[stg_DimCustomer_UPDATES]

-- =============================================
-- 更新一些数据,以显示SSIS 2012中CDC的效果
---Generate By downmoon(邀月),3w@live.cn
-- =============================================

USE [CDCTest]
GO
 
-- Transfer the remaining customer rows
SET IDENTITY_INSERT DimCustomer_CDC ON
 
INSERT INTO DimCustomer_CDC
(
       CustomerKey, GeographyKey, CustomerAlternateKey, Title, FirstName, 
       MiddleName, LastName, NameStyle, BirthDate, MaritalStatus, 
       Suffix, Gender, EmailAddress, YearlyIncome, TotalChildren, 
       NumberChildrenAtHome, EnglishEducation, SpanishEducation,
       FrenchEducation, EnglishOccupation, SpanishOccupation, 
       FrenchOccupation, HouseOwnerFlag, NumberCarsOwned, AddressLine1, 
       AddressLine2, Phone, DateFirstPurchase, CommuteDistance
)
SELECT CustomerKey, GeographyKey, CustomerAlternateKey, Title, FirstName, 
       MiddleName, LastName, NameStyle, BirthDate, MaritalStatus, 
       Suffix, Gender, EmailAddress, YearlyIncome, TotalChildren, 
       NumberChildrenAtHome, EnglishEducation, SpanishEducation,
       FrenchEducation, EnglishOccupation, SpanishOccupation, 
       FrenchOccupation, HouseOwnerFlag, NumberCarsOwned, AddressLine1, 
       AddressLine2, Phone, DateFirstPurchase, CommuteDistance
FROM [AdventureWorksDW2012].[dbo].[DimCustomer]
WHERE CustomerKey =11502
 
SET IDENTITY_INSERT DimCustomer_CDC OFF
GO
 
-- give 10 people a raise
UPDATE DimCustomer_CDC 
SET 
    YearlyIncome = YearlyIncome + 10
WHERE
    CustomerKey >= 11000 AND CustomerKey <= 11010
 
GO