關於SQL2008分區表滑動窗口方案的應用策略

接着上次的分區表來說..創建好了後..就得有一個腳本來管理這些分區表的及時管理了。。

呵呵。。現在直接看腳本吧。。。

參考了網上的一些方法，結合自己的系統應用。。

由於本次分區的字段並非主鍵，因此遇到一些小問題。。

下面雖然能實現滑動窗口方案，但是總覺得通過刪除索引在創建索引的方式來實現有點浪費。。。希望有高人能有有更好的意見。。

謝謝。。。

 

/* * 1.創建兩個函數MinFileGroupsByPartitionBoundary,獲取最小的日期分界值和分區號 */ IF EXISTS(SELECT * FROM SYSOBJECTS WHERE name='MinFileGroupsByPartitionBoundary' AND type='IF') BEGIN DROP FUNCTION MinFileGroupsByPartitionBoundary END GO CREATE FUNCTION MinFileGroupsByPartitionBoundary() RETURNS TABLE AS RETURN ( SELECT top 1 sf.name AS FileGroupName, sprv.value AS Boundary FROM SYS.PARTITION_SCHEMES AS SPS INNER JOIN SYS.PARTITION_FUNCTIONS AS SPF ON SPS.FUNCTION_ID = SPF.FUNCTION_ID INNER JOIN SYS.DESTINATION_DATA_SPACES AS SDD ON SDD.PARTITION_SCHEME_ID = SPS.DATA_SPACE_ID AND SDD.DESTINATION_ID <= SPF.FANOUT INNER JOIN SYS.PARTITION_RANGE_VALUES SPRV ON SPRV.FUNCTION_ID = SPF.FUNCTION_ID AND SPRV.BOUNDARY_ID = SDD.DESTINATION_ID INNER JOIN SYS.FILEGROUPS AS SF ON SF.DATA_SPACE_ID = SDD.DATA_SPACE_ID WHERE SPS.NAME= 'FROMCITYCODEPARTITION' ORDER BY BOUNDARY ) GO /* *創建最大的日期分界值和分區號MaxFileGroupsByPartitionBoundary */ IF EXISTS(SELECT * FROM SYSOBJECTS WHERE name='MaxFileGroupsByPartitionBoundary' AND type='IF') BEGIN DROP FUNCTION MaxFileGroupsByPartitionBoundary END GO CREATE FUNCTION MaxFileGroupsByPartitionBoundary() RETURNS TABLE AS RETURN ( SELECT top 1 sf.name AS FileGroupName, sprv.value AS Boundary FROM SYS.PARTITION_SCHEMES AS SPS INNER JOIN SYS.PARTITION_FUNCTIONS AS SPF ON SPS.FUNCTION_ID = SPF.FUNCTION_ID INNER JOIN SYS.DESTINATION_DATA_SPACES AS SDD ON SDD.PARTITION_SCHEME_ID = SPS.DATA_SPACE_ID AND SDD.DESTINATION_ID <= SPF.FANOUT INNER JOIN SYS.PARTITION_RANGE_VALUES SPRV ON SPRV.FUNCTION_ID = SPF.FUNCTION_ID AND SPRV.BOUNDARY_ID = SDD.DESTINATION_ID INNER JOIN SYS.FILEGROUPS AS SF ON SF.DATA_SPACE_ID = SDD.DATA_SPACE_ID WHERE SPS.NAME= 'FROMCITYCODEPARTITION' ORDER BY BOUNDARY DESC) GO -- 刪除分區表原來的索引 IF EXISTS(SELECT * FROM SYSINDEXES WHERE NAME='PK_AIR_ID' AND ID IN(SELECT ID FROM SYSOBJECTS WHERE NAME='BA_CACHE_AIR_RESULT')) BEGIN ALTER TABLE BA_CACHE_AIR_RESULT DROP constraint PK_AIR_ID END GO IF EXISTS(SELECT * FROM SYSINDEXES WHERE NAME='IX_001' AND ID IN(SELECT ID FROM SYSOBJECTS WHERE NAME='BA_CACHE_AIR_RESULT')) BEGIN DROP INDEX IX_001 ON BA_CACHE_AIR_RESULT END GO IF EXISTS(SELECT * FROM SYSINDEXES WHERE NAME='IX_002' AND ID IN(SELECT ID FROM SYSOBJECTS WHERE NAME='BA_CACHE_AIR_RESULT')) BEGIN DROP INDEX IX_002 ON BA_CACHE_AIR_RESULT END GO --申明三個變量，下面會用到。 DECLARE @FileGroupName VARCHAR(50), @MinBoundary DATETIME, @MaxBoundary DATETIME SELECT @FileGroupName = FileGroupName,@MinBoundary=CONVERT(DATETIME,Boundary) FROM MinFileGroupsByPartitionBoundary() SELECT @MaxBoundary = CONVERT(DATETIME,Boundary) FROM MaxFileGroupsByPartitionBoundary() /* 2.創建一個臨時的表，暫名爲TEMP_LOG，用於存儲要遷出的數據，即2個月內最早的一天的數據。 ［注意］這裏創建的臨時的表，需要與要遷出的數據在同一個分區裏，如1月份數據是存放在分區CITY01裏的話，則創建臨時表的時候， 也要創建在CITY01上。 */ IF EXISTS(SELECT * FROM SYSOBJECTS WHERE name='TEMP_LOG' AND type='U') DROP TABLE TEMP_LOG DECLARE @CreateText NVARCHAR(MAX) SET @CreateText = 'CREATE TABLE [dbo].[TEMP_LOG]( [AIR_ID] [nvarchar](50) NOT NULL, [TRIPINDEX] [nvarchar](50) NULL, [AIR_AGENT_ID] [varchar](36) NULL, [AIR_FROM_AIRPORT_CODE] [nvarchar](10) NULL, [AIR_TO_AIRPORT_CODE] [nvarchar](10) NULL, [AIR_FROM_AIRPORT_NAME] [nvarchar](50) NULL, [AIR_TO_AIRPORT_NAME] [nvarchar](50) NULL, [AIR_FROM_CITY_NAME] [nvarchar](50) NULL, [AIR_TO_CITY_NAME] [nvarchar](50) NULL, [AIR_FROM_DATETIME] [datetime] NULL, [AIR_TO_DATETIME] [datetime] NULL, [AIR_AIRFARE_PRICE] [decimal](18, 2) NULL, [AIR_ADULT_DISCOUNT] [decimal](18, 2) NULL, [AIR_CHILD_DISCOUNT] [decimal](18, 2) NULL, [AIR_BABY_DISCOUNT] [decimal](18, 2) NULL, [AIR_ADULT_DISCOUNT_ORDER] [tinyint] NULL, [AIR_TAX_FEE] [nvarchar](40) NULL, [AIR_OIL_FEE] [nvarchar](40) NULL, [AIR_AIRLINES_INFO] [nvarchar](50) NULL, [AIR_FLIGHT_CODE] [nvarchar](50) NULL, [AIR_FLIGHT_TYPE] [nvarchar](50) NULL, [AIR_CABIN_CODE] [nvarchar](50) NULL, [AIR_CABIN_NAME] [nvarchar](50) NULL, [AIR_AIRPLANE_INFO] [nvarchar](1000) NULL, [AIR_TUIPIAO_DESC] [nvarchar](1000) NULL, [AIR_GENGGAI_DESC] [nvarchar](1000) NULL, [AIR_QIANZHUAN_DESC] [nvarchar](1000) NULL, [AIR_INSURANCE_FEE] [decimal](18, 0) NULL, [AIR_TICKET_COUNT] [nvarchar](10) NULL, [AIR_LEG_TYPE] [nvarchar](1) NULL, [AIR_TRANSIT_AIRPORT_CODE] [nvarchar](50) NULL, [AIR_TRANSIT_AIRPORT_NAME] [nvarchar](50) NULL, [AIR_TRANSIT_CITY_NAME] [nvarchar](50) NULL, [AIR_TRANSIT_TO_DATETIME] [nvarchar](50) NULL, [AIR_TRANSIT_FROM_DATETIME] [nvarchar](50) NULL, [AIR_TRANSIT_AIRLINES_INFO] [nvarchar](50) NULL, [AIR_TRANSIT_FLIGHT_CODE] [nvarchar](50) NULL, [AIR_TRANSIT_AIRPLANE_INFO] [nvarchar](1000) NULL, [AIR_TRANSIT_TAX_FEE] [nvarchar](20) NULL, [AIR_TRANSIT_OIL_FEE] [nvarchar](20) NULL, [AIR_FROM_CITY_CODE] [nvarchar](10) NULL, [AIR_TO_CITY_CODE] [nvarchar](10) NULL, [AIR_AFTER_DISCOUNT_ADULT_PRICE] [decimal](18, 2) NULL, [AIR_AFTER_DISCOUNT_CHILD_PRICE] [decimal](18, 2) NULL, [AIR_AFTER_DISCOUNT_BABY_PRICE] [decimal](18, 2) NULL, [AIR_AIRLINE_RULE_ID] [varchar](5) NULL, [AIR_TOURCODE_ID] [varchar](20) NULL, [AIR_TJ] [nvarchar](1) NULL, [AIR_FAREBASIS] [nvarchar](100) NULL, [AIR_CODESHARE] [varchar](5) NULL, [AIR_CREATETIME] [datetime] NULL, [AIR_OFTEN] INT NULL ) ON ' + @FileGroupName + ';' EXEC SP_EXECUTESQL @CreateText /* 3.這個時候就可以遷出分界值最小的那個分區裏的數據了。 */ ALTER TABLE BA_CACHE_AIR_RESULT SWITCH PARTITION 1 TO TEMP_LOG /* 4.刪除臨時表temp_Log，這個時候，遷出的數據也刪除掉了，實現了將最小分區值裏的數據進行清理的目的。 */ TRUNCATE TABLE TEMP_LOG DROP TABLE TEMP_LOG /* 5.當最小的日期分界值的分區數據清理掉後，還需要將分界值也去掉。 */ ALTER PARTITION FUNCTION [FromCityCodePartitionFunction]() MERGE RANGE(@MinBoundary) /* 6.去掉最小分界值後，相應的分區也就空出來了，這時候，就可以將空出來的這個分區置爲可用狀態了。 */ SET @CreateText = 'ALTER PARTITION SCHEME [FromCityCodePartition] NEXT USED ' + @FileGroupName EXEC SP_EXECUTESQL @CreateText /* 7.將最後的一個分區，在這裏相當於我們的CITY09，對它進行拆分，以什麼拆分呢，就以我們的下一個日期分界值，即’20070701 00:00:00.000’，這樣在第6步空出來的分區就被用來存儲’ 2007-07-01 00:00:00.000’以後的數據了。 */ ALTER PARTITION FUNCTION [FromCityCodePartitionFunction]() SPLIT RANGE (DATEADD(DAY,2,@MaxBoundary)) --創建主鍵，但不設爲聚集索引 ALTER TABLE BA_CACHE_AIR_RESULT ADD CONSTRAINT PK_AIR_ID PRIMARY KEY NONCLUSTERED ( AIR_ID ASC ) ON [PRIMARY] GO IF EXISTS( SELECT * FROM SYSINDEXES WHERE name='IX_001' AND id IN(SELECT id FROM sysobjects WHERE name='BA_CACHE_AIR_RESULT') ) BEGIN DROP INDEX IX_001 ON BA_CACHE_AIR_RESULT END CREATE NONCLUSTERED INDEX [IX_001] ON [dbo].[BA_CACHE_AIR_RESULT] ( [AIR_FROM_CITY_CODE] ASC, [AIR_TO_CITY_CODE] ASC, [AIR_FROM_DATETIME] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) GO IF EXISTS(SELECT * FROM SYSINDEXES WHERE name='IX_002' AND id IN(SELECT id FROM sysobjects WHERE name='BA_CACHE_AIR_RESULT')) BEGIN DROP INDEX IX_002 ON BA_CACHE_AIR_RESULT END /****** Object: Index [IX_002] Script Date: 03/09/2011 19:03:52 ******/ CREATE NONCLUSTERED INDEX [IX_002] ON [dbo].[BA_CACHE_AIR_RESULT] ( [AIR_AGENT_ID] ASC, [AIR_FLIGHT_CODE] ASC, [AIR_TRANSIT_FROM_DATETIME] ASC, [AIR_FROM_CITY_CODE] ASC, [AIR_TO_CITY_CODE] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) GO /* SELECT PARTITION = $PARTITION.FROMCITYCODEPARTITIONFUNCTION(AIR_FROM_DATETIME) ,ROWS = COUNT(*) ,MINVAL = MIN(AIR_FROM_DATETIME) ,MAXVAL = MAX(AIR_FROM_DATETIME) FROM DBO.BA_CACHE_AIR_RESULT GROUP BY $PARTITION.FROMCITYCODEPARTITIONFUNCTION(AIR_FROM_DATETIME) ORDER BY PARTITION GO */