How to Remove Table Partitioning in SQL Server

USE master
GO
CREATE DATABASE PartitionDB
ON PRIMARY (NAME = N‘PartitionDB‘
,FILENAME = N‘D:\MSSQL\Data\PartitionDB.mdf‘
,SIZE = 50MB, FILEGROWTH = 150MB)
LOG ON (
NAME = N‘PartitionDB_log‘
,FILENAME = N‘D:\MSSQL\Logs\PartitionDB_log.ldf‘
,SIZE = 10MB, FILEGROWTH = 100MB);
GO
 
ALTER DATABASE PartitionDB ADD FILEGROUP PartitionFG1;
GO
ALTER DATABASE PartitionDB ADD FILEGROUP PartitionFG2;
GO
ALTER DATABASE PartitionDB ADD FILEGROUP PartitionFG3;
GO
ALTER DATABASE PartitionDB ADD FILEGROUP PartitionFG4;
GO
 
ALTER DATABASE PartitionDB
    ADD FILE
    (
        NAME = PartitionFile1,
        FILENAME = ‘D:\MSSQL\Data\PartitionFile1.ndf‘,
        SIZE = 20MB, MAXSIZE = 50MB, FILEGROWTH = 5MB
    )
    TO FILEGROUP PartitionFG1;
GO
 
ALTER DATABASE PartitionDB
    ADD FILE
    (
        NAME = PartitionFile2,
        FILENAME = ‘D:\MSSQL\Data\PartitionFile2.ndf‘,
        SIZE = 20MB, MAXSIZE = 50MB, FILEGROWTH = 5MB
    )
    TO FILEGROUP PartitionFG2;
GO
 
ALTER DATABASE PartitionDB
    ADD FILE
    (
        NAME = PartitionFile3,
        FILENAME = ‘D:\MSSQL\Data\PartitionFile3.ndf‘,
        SIZE = 20MB, MAXSIZE = 50MB, FILEGROWTH = 5MB
    )
    TO FILEGROUP PartitionFG3;
GO
 
ALTER DATABASE PartitionDB
    ADD FILE
    (
        NAME = PartitionFile4,
        FILENAME = ‘D:\MSSQL\Data\PartitionFile4.ndf‘,
        SIZE = 20MB, MAXSIZE = 50MB, FILEGROWTH = 5MB
    )
    TO FILEGROUP PartitionFG4;
GO
 
CREATE PARTITION FUNCTION PartFunc1 (int)
    AS RANGE LEFT FOR VALUES (10, 20, 30);
GO
 
CREATE PARTITION SCHEME PartScheme1
    AS PARTITION PartFunc1
    TO (PartitionFG1, PartitionFG2,PartitionFG3,PartitionFG4);
GO
 
USE [PartitionDB]
GO
CREATE TABLE PartitionTable
    (
    MyID int NOT NULL,
    MyDate datetime NULL,
    Name varchar(50) NULL
    )  ON PartScheme1(MyID)
GO
USE PartitionDB
go
CREATE UNIQUE CLUSTERED INDEX IX_PartitionTable
ON PartitionTable(MyID)
ON PartScheme1 (MyID);
GO
 
USE PartitionDB
go
INSERT INTO PartitionTable (MyID, MyDate,name)
VALUES (1,GETDATE(),‘Rooney‘);
INSERT INTO PartitionTable (MyID, MyDate,name)
VALUES (11,GETDATE(),‘Van persie‘);
INSERT INTO PartitionTable (MyID, MyDate,name)
VALUES (22,GETDATE(),‘De Gea‘);
INSERT INTO PartitionTable (MyID, MyDate,name)
VALUES (34,GETDATE(),‘Moyes‘);
GO

USE PartitionDB
GO
SELECT
OBJECT_NAME(idx.object_id) AS TableName ,
psh.name AS PartitionSchemeName ,
fnc.name AS PartitionFunctionName,
part.partition_number AS PartitionNumber ,
fg.name AS [Filegroup],
rows AS ‘No of Records‘ ,
CASE boundary_value_on_right WHEN 1 THEN ‘less than‘
ELSE ‘less than or equal to‘ END AS ‘Condition‘,
value AS ‘Range‘ ,
part.partition_id AS [Partition Id] FROM sys.partitions part
JOIN sys.indexes idx
ON part.object_id = idx.object_id
AND part.index_id = idx.index_id JOIN sys.partition_schemes psh
ON psh.data_space_id = idx.data_space_id
JOIN
sys.partition_functions fnc
ON fnc.function_id = psh.function_id LEFT
JOIN sys.partition_range_values prv
ON fnc.function_id = prv.function_id
AND part.partition_number = prv.boundary_id
JOIN sys.destination_data_spaces dds
ON dds.partition_scheme_id = psh.data_space_id
AND dds.destination_id = part.partition_number
JOIN sys.filegroups fg
ON dds.data_space_id = fg.data_space_id
JOIN (SELECT container_id, sum(total_pages) as total_pages
FROM
sys.allocation_units GROUP BY container_id) AS au
ON au.container_id = part.partition_id JOIN sys.tables t ON
part.object_id = t.object_id WHERE idx.index_id < 2
ORDER BY TableName,part.partition_number;
GO

USE [PartitionDB]
GO
DROP INDEX [IX_PartitionTable] ON
[dbo].[PartitionTable] WITH ( ONLINE = OFF )
GO

USE [PartitionDB]
GO
CREATE UNIQUE CLUSTERED INDEX [IX_PartitionTable] ON
[dbo].[PartitionTable]
(
 [MyID] 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)
ON [PRIMARY]
GO