SQL Server表分区删除详情

SELECT * FROM SYS.PARTITioN_FUNCTIONS       --分区函数
SELECT * FROM SYS.PARTITION_RANGE_VALUES    --分区方案

SELECT $PARTITION.SalesOrderHeader_OrderDate(OrderDate) AS NUMBER,COUNT(1) AS COUNT
FROM [Sales].[SalesOrderHeader]
GROUP BY $PARTITION.SalesOrderHeader_OrderDate(OrderDate)

ALTER PARTITION FUNCTION SalesOrderHeader_OrderDate() MERGE RANGE('2011-01-01 00:00:00.000')
ALTER PARTITION FUNCTION SalesOrderHeader_OrderDate() MERGE RANGE('2012-01-01 00:00:00.000')
ALTER PARTITION FUNCTION SalesOrderHeader_OrderDate() MERGE RANGE('2013-01-01 00:00:00.000')
ALTER PARTITION FUNCTION SalesOrderHeader_OrderDate() MERGE RANGE('2014-01-01 00:00:00.000')

ALTER TABLE [Sales].[SalesOrderHeader] ADD  CONSTRaiNT [PK_SalesOrderHeader_SalesOrderID] PRIMARY KEY NONCLUSTERED 
(
    [SalesOrderID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]

ALTER TABLE [Sales].[SalesOrderHeader] DROP CONSTRAINT [PK_SalesOrderHeader_SalesOrderID]

CREATE TABLE [Sales].[SalesOrderHeader_Temp](
    [SalesOrderID] [INT] IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,
    [RevisionNumber] [TINYINT] NOT NULL,
    [OrderDate] [DATETIME] NOT NULL,
    [DueDate] [DATETIME] NOT NULL,
    [ShipDate] [DATETIME] NULL,
    [Status] [TINYINT] NOT NULL,
    [OnlineOrderFlag] [dbo].[Flag] NOT NULL,
    [SalesOrderNumber]  AS (ISNULL(N'SO'+CONVERT([NVARCHAR](23),[SalesOrderID]),N'*** ERROR ***')),
    [PurchaseOrderNumber] [dbo].[OrderNumber] NULL,
    [AccountNumber] [dbo].[AccountNumber] NULL,
    [CustomerID] [INT] NOT NULL,
    [SalesPersonID] [INT] NULL,
    [TerritoryID] [INT] NULL,
    [BillToAddressID] [INT] NOT NULL,
    [ShipToAddressID] [INT] NOT NULL,
    [ShipMethodID] [INT] NOT NULL,
    [CreditCardID] [INT] NULL,
    [CreditCardApprovalCode] [VARCHAR](15) NULL,
    [CurrencyRateID] [INT] NULL,
    [SubTotal] [MONEY] NOT NULL,
    [TaxAmt] [MONEY] NOT NULL,
    [Freight] [MONEY] NOT NULL,
    [TotalDue]  AS (ISNULL(([SubTotal]+[TaxAmt])+[Freight],(0))),
    [Comment] [NVARCHAR](128) NULL,
    [rowguid] [UNIQUEIDENTIFIER] ROWGUIDCOL  NOT NULL,
    [ModifiedDate] [DATETIME] NOT NULL
)

ALTER TABLE [Sales].[SalesOrderHeader] SWITCH PARTITION 1 TO [Sales].[SalesOrderHeader_Temp] PARTITION 1

ALTER TABLE [Sales].[SalesOrderHeader_Temp] ADD  CONSTRAINT [PK_SalesOrderHeader_SalesOrderID] PRIMARY KEY NONCLUSTERED 
(
    [SalesOrderID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]

DROP TABLE Sales.SalesOrderHeader

DROP PARTITION SCHEME SalesOrderHeader_OrderDate
DROP PARTITION FUNCTION SalesOrderHeader_OrderDate

EXEC SP_RENAME '[Sales].[SalesOrderHeader_Temp]','SalesOrderHeader'