Note: This question is part of a series of questions that use the same set of answer choices. An answer choice may be correct for more than one question in the series.
You administer a Microsoft SQL Server 2008 database named AdventureWorks that contains a table named Production.Product. The table contains a primary key named PK_Product_ProductID and a non-clustered index named AK_Product_ProductNumber. Both indexes have been created on a single primary partition.
The table has the following definition:
CREATE TABLE [Production].[Product](
[ProductID] [int] IDENTITY(1,1) NOT NULL,
[Name] [nvarchar](50) NOT NULL,
[ProductNumber] [nvarchar](25) NOT NULL,
[Color] [nvarchar](15) NULL,
[Class] [nchar](2) NULL,
[Style] [nchar](2) NULL,
[ModifiedDate] [datetime] NOT NULL,
CONSTRAINT [PK_Product_ProductID] PRIMARY KEY CLUSTERED ([ProductID] ASC) ON [PRIMARY]) ON [PRIMARY]GO
The index has the following definition:
CREATE UNIQUE NONCLUSTERED INDEX [AK_Product_ProductNumber] ON [Production].[Product] ([ProductNumber] ASC) ON [PRIMARY]
GO
The Production.Product table contains 1 million rows.
You want to ensure that data retrieval takes the minimum amount of time when the queries executed against the Production.Product table are ordered by product number or filtered by class. You need to find out the degree of fragmentation for the indexes on the Production.Product table.
Which Transact-SQL statement should you use?
A. ALTER STATISTICS Production.Product
B. SELECT * FROM sys.indexes where name=N’Production.Product’
C. CREATE STATISTICS ProductClass_Stats ON Production.Product (Name, ProductNumber, Class) WHERE Class is not null
D. SELECT * FROM sys.dm_db_index_physical_stats (DB_ID(), OBJECT_ID(N’Production.Product’),NULL, NULL, NULL)
E. SELECT * FROM STATS WHERE name=’AK_Product_ProductNumber’
F. DBCC SHOW_STATISTICS (‘Production.Product’, AK_Product_ProductNumber)
G. UPDATE INDEX AK_Product_ProductNumber ON Production.Product SET (STATISTICS_NORECOMPUTE = ON)
H. ALTER INDEX AK_Product_ProductNumber ON Production.Product REBUILD
I. SELECT * FROM sys.dm_db_index_operational_stats (DB_ID(), OBJECT_ID(N’Production.Product’),NULL, NULL)
J. SELECT * FROM SYS.STATS WHERE name=’AK_Product_ProductNumber’
K. EXEC sys.sp_configure ‘index create memory’, 1
L. CREATE STATS ProductClass_StatsON Production.Product (Name, ProductNumber, Class) WHERE Class is not null WITH SAMPLE 100 PERCENT
M. ALTER DATABASE [AdventureWorks] SET AUTO_UPDATE_STATISTICS ON
N. ALTER INDEX AK_Product_ProductNumber ON Production.Product REBUILD Partition = 1
O. UPDATE STATISTICS Production.Product
P. ALTER INDEX AK_Product_ProductNumber ON Production.Product REORGANIZE
Q. CREATE STATISTICS ProductClass_StatsON Production.Product (Name, ProductNumber, Class) WHERE Class <> null
