Delete an empty table partition filegroup.

Question

create partition function pfOrders(int)
as range left
for values(34);
create partition scheme psOrders
as partition pfOrders
to (FG_34,FG_65)
go
I used the above code to create partition function and scheme. I switched out FG_65 filegroup data to another table. Now, I have to delete the filegroup FG_65 completely. I can delete the file successfully as it doesnot have any data. But, as the partition
scheme is using the FG_65 file group, I was unable to drop it.
I am not quite sure hoe can I use split or merge on this. If I merge 34, then the first partition can be deleted. I want to delete the last partition.

Answer 1

USE [master]
GO
DROP DATABASE PartitionMaintTest
GO
CREATE DATABASE PartitionMaintTest
GO
ALTER DATABASE PartitionMaintTest SET RECOVERY SIMPLE
GO
ALTER DATABASE [PartitionMaintTest] ADD FILEGROUP [FACT_EMPTY]
GO
ALTER DATABASE [PartitionMaintTest] ADD FILEGROUP [FACT_2008_M10]
ALTER DATABASE [PartitionMaintTest] ADD FILE ( 
NAME = N'FACT_EMPTY', 
FILENAME = N'e:\PartitionMaintTest_FACT_EMPTY.ndf' , 
SIZE = 512KB , FILEGROWTH = 512KB ) TO FILEGROUP [FACT_EMPTY]
GO
ALTER DATABASE [PartitionMaintTest] ADD FILE ( 
NAME = N'FACT_2008_M10_01', 
FILENAME = N'e:\PartitionMaintTest_FACT_2008_M10_01.ndf' , 
SIZE = 512KB , FILEGROWTH = 512KB ) TO FILEGROUP [FACT_2008_M10]
USE [PartitionMaintTest]
GO
/****** Object:  PartitionFunction [pf_FACT_DATA_DATE]    Script Date: 11/10/2010 20:45:07 ******/
CREATE PARTITION FUNCTION [pf_FACT_DATA_DATE](datetime) AS RANGE RIGHT FOR 
VALUES ( N'2008-10-01')
GO
/****** Object:  PartitionScheme [ps_FACT_DATA_DATE]    Script Date: 11/10/2010 20:45:29 ******/
CREATE PARTITION SCHEME [ps_FACT_DATA_DATE] AS PARTITION [pf_FACT_DATA_DATE] TO (
[FACT_EMPTY], [FACT_2008_M10])
CREATE TABLE Orders (
OrderCloseDate datetime not null, 
OrderNum int not null, 
[Status] char(2) null,
CustomerID int not null)
ON ps_FACT_DATA_DATE (OrderCloseDate)
GO
CREATE INDEX IX_Orders_CustomerID
ON Orders (OrderCloseDate, CustomerID)
ON ps_FACT_DATA_DATE (OrderCloseDate)
GO
-- Insert Sample Data
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('09/10/2008', 1, 'AE', 12288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('10/10/2008', 2, 'AE', 12288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('11/10/2008', 3, 'AE', 12388)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('12/10/2008', 4, 'AE', 12488)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('01/10/2009', 5, 'AE', 12588)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('02/10/2009', 6, 'AE', 12688)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('03/10/2009', 7, 'AE', 12788)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('04/10/2009', 8, 'AE', 12888)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('05/10/2009', 9, 'AE', 12988)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('06/10/2009', 10, 'AE', 12088)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('07/10/2009', 11, 'AE', 11288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('08/10/2009', 12, 'AE', 12288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('09/10/2009', 13, 'AE', 13288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('10/10/2009', 14, 'AE', 14288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('11/10/2009', 15, 'AE', 15288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('12/10/2009', 16, 'AE', 16288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('01/10/2010', 17, 'AE', 17288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('02/10/2010', 18, 'AE', 18288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('03/10/2010', 19, 'AE', 19288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('04/10/2010', 20, 'AE', 12288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('05/10/2010', 21, 'AE', 32288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('06/10/2010', 22, 'AE', 52288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('07/10/2010', 23, 'AE', 62288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('08/10/2010', 24, 'AE', 92288)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('09/10/2010', 25, 'AE', 12283)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('10/10/2010', 26, 'AE', 12284)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('11/10/2010', 27, 'AE', 12285)
GO
INSERT INTO Orders (OrderCloseDate, OrderNum, [Status], CustomerID) VALUES ('12/10/2010', 28, 'AE', 12286)
GO SELECT
DB_NAME() AS 'DatabaseName'
,OBJECT_NAME(p.OBJECT_ID) AS 'TableName'
,p.index_id AS 'IndexId'
,CASE
WHEN p.index_id = 0 THEN 'HEAP'
ELSE i.name
END AS 'IndexName'
,p.partition_number AS 'PartitionNumber'
,prv_left.value AS 'LowerBoundary'
,prv_right.value AS 'UpperBoundary'
,ps.name as PartitionScheme
,pf.name as PartitionFunction
,CASE
WHEN fg.name IS NULL THEN ds.name
ELSE fg.name
END AS 'FileGroupName'
,CAST(p.used_page_count * 0.0078125 AS NUMERIC(18,2)) AS 'UsedPages_MB'
,CAST(p.in_row_data_page_count * 0.0078125 AS NUMERIC(18,2)) AS 'DataPages_MB'
,CAST(p.reserved_page_count * 0.0078125 AS NUMERIC(18,2)) AS 'ReservedPages_MB'
,CASE
WHEN p.index_id IN (0,1) THEN p.row_count
ELSE 0
END AS 'RowCount'
,CASE
WHEN p.index_id IN (0,1) THEN 'data'
ELSE 'index'
END 'Type'
FROM sys.dm_db_partition_stats p
INNER JOIN sys.indexes i
ON i.OBJECT_ID = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN sys.data_spaces ds
ON ds.data_space_id = i.data_space_id
LEFT OUTER JOIN sys.partition_schemes ps
ON ps.data_space_id = i.data_space_id
LEFT OUTER JOIN sys.partition_functions pf
ON ps.function_id = pf.function_id
LEFT OUTER JOIN sys.destination_data_spaces dds
ON dds.partition_scheme_id = ps.data_space_id
AND dds.destination_id = p.partition_number
LEFT OUTER JOIN sys.filegroups fg
ON fg.data_space_id = dds.data_space_id
LEFT OUTER JOIN sys.partition_range_values prv_right
ON prv_right.function_id = ps.function_id
AND prv_right.boundary_id = p.partition_number
LEFT OUTER JOIN sys.partition_range_values prv_left
ON prv_left.function_id = ps.function_id
AND prv_left.boundary_id = p.partition_number - 1
WHERE
OBJECTPROPERTY(p.OBJECT_ID, 'ISMSSHipped') = 0
AND p.index_id IN (0,1)
ALTER PARTITION FUNCTION [pf_FACT_DATA_DATE]()
MERGE RANGE('2008-10-01 00:00:00.000')
ALTER PARTITION SCHEME [ps_FACT_DATA_DATE] 
NEXT USED [FACT_EMPTY]
SELECT
DB_NAME() AS 'DatabaseName'
,OBJECT_NAME(p.OBJECT_ID) AS 'TableName'
,p.index_id AS 'IndexId'
,CASE
WHEN p.index_id = 0 THEN 'HEAP'
ELSE i.name
END AS 'IndexName'
,p.partition_number AS 'PartitionNumber'
,prv_left.value AS 'LowerBoundary'
,prv_right.value AS 'UpperBoundary'
,ps.name as PartitionScheme
,pf.name as PartitionFunction
,CASE
WHEN fg.name IS NULL THEN ds.name
ELSE fg.name
END AS 'FileGroupName'
,CAST(p.used_page_count * 0.0078125 AS NUMERIC(18,2)) AS 'UsedPages_MB'
,CAST(p.in_row_data_page_count * 0.0078125 AS NUMERIC(18,2)) AS 'DataPages_MB'
,CAST(p.reserved_page_count * 0.0078125 AS NUMERIC(18,2)) AS 'ReservedPages_MB'
,CASE
WHEN p.index_id IN (0,1) THEN p.row_count
ELSE 0
END AS 'RowCount'
,CASE
WHEN p.index_id IN (0,1) THEN 'data'
ELSE 'index'
END 'Type'
FROM sys.dm_db_partition_stats p
INNER JOIN sys.indexes i
ON i.OBJECT_ID = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN sys.data_spaces ds
ON ds.data_space_id = i.data_space_id
LEFT OUTER JOIN sys.partition_schemes ps
ON ps.data_space_id = i.data_space_id
LEFT OUTER JOIN sys.partition_functions pf
ON ps.function_id = pf.function_id
LEFT OUTER JOIN sys.destination_data_spaces dds
ON dds.partition_scheme_id = ps.data_space_id
AND dds.destination_id = p.partition_number
LEFT OUTER JOIN sys.filegroups fg
ON fg.data_space_id = dds.data_space_id
LEFT OUTER JOIN sys.partition_range_values prv_right
ON prv_right.function_id = ps.function_id
AND prv_right.boundary_id = p.partition_number
LEFT OUTER JOIN sys.partition_range_values prv_left
ON prv_left.function_id = ps.function_id
AND prv_left.boundary_id = p.partition_number - 1
WHERE
OBJECTPROPERTY(p.OBJECT_ID, 'ISMSSHipped') = 0
AND p.index_id IN (0,1)
GO
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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