SQL Server 2008 New Features

8/4/2019 SQL Server 2008 New Features

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SQL SERVER 2008 NEW FEATURESJeff R. Johnson| Lead SQL Architect

[email protected]| 973-401-0660


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AGENDA

SECURITYAND DATA AUDITING 4

AVAILABILITYAND RELIABILITY 8

PERFORMANCE 10

MANAGEMENT 13

NEW DATA TYPES 14

DEVELOPMENT ENHANCEMENTS 15

SERVICEBROKER 20

DATA STORAGE 21


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AGENDA

DATA WAREHOUSING/ETL 27

REPORTING 31

DEPRECATION 32

Q & A 33


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Capax | Global | NY Metro HQ | 10 Sylvan Way | Parsippany, NJ 07045 | 973-401-0660

SECURITYANDDATAAUDIT

ING

TRANSPARENT DATA ENCRYPTION

Encryption of data on the disk while it remains transparent to the application

requesting the data.

Steps

1. Create a Master Key

2. Create or obtain a certificate protected by the master key

3. Create a database encryption key and protect it by the certificate

4. Set the database to use encryption


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ING

TRANSPARENT DATA ENCRYPTION

Use master

go

Create Master Key

Encryption by Password = mssqlR0cks

Go

Create Certificate TDECert

With Subject = TDE Certificate

Go

Create Database TDESample

Go

Use TDESample

Go

Create Database Encryption Key

With Algorithm = AES_256

Encryption by Server Certificate TDECert

Go

Alter database TDESampleSet Encryption On

Go


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ING

EXTENSIBLE KEY MANAGEMENT

Features Support for Hardware Security Modules (HSM)

HSM devices store encryption keys in hardware or software modules

More secure because encryption keys do not reside with the data

Higher performance for hardware-based encryption/decryption

Additional authorization check

Secure encryption key disposal

Easier retention and retrieval

Turn on EKM

Sp_configure show advanced,1

Go

Reconfigure

GoSp_configure EKM provider enabled,1

Go

Reconfigure

go


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ING

AUDITING

Server Audits

Audit events that happen at the server level (Login, Logout, Groups, etc.)

CREATE SERVER AUDIT [LoginAudit]

TO APPLICATION_LOG

WITH

( QUEUE_DELAY = 1000

,ON_FAILURE = CONTINUE

)

GO

CREATE SERVER AUDIT SPECIFICATION [TestServerAudit]

FOR SERVER AUDIT [LoginAudit]

ADD (SUCCESSFUL_LOGIN_GROUP)

WITH (STATE = ON)

GO

Database Audits

Audit events that happen at the database level (Schema, Ownership, Data, etc.)

CREATE DATABASE AUDIT SPECIFICATION [SchemaAudit]

FOR SERVER AUDIT [SchemaAudit]

ADD (SCHEMA_OBJECT_CHANGE_GROUP)

WITH (STATE = On)

GO


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AVAILABILITYANDRELIABILITY

HOT SWAP CPUS

Adds the ability to add CPUs on the fly while the machine is up and running

Automatically recognizes additional CPU and starts using it


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AVAILABILITYANDRELIABILITY

DATABASE MIRRORING

Compressed log steam to minimize network bandwidth

Automatic page repair for both principal and mirror

New DMVs (Dynamic Management Views)

Additional mirroring performance counters


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PERFORMA

NCE

BACKUP COMPRESSION

Setup Server Wide

Exec sp_configure backup compression default,1

Reconfigure with override

Database Backup Syntax

BACKUP DATABASE AdventureWorks

To Disk = c:\SQLData\AdventureWorks_Compressed.bak

With COMPRESSION, INIT


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PERFORMA

NCE

PERFORMANCE DATA COLLECTION

New tool in Management Studio

Collects data about SQL Server 2008 in collection sets

Stores data collected in a database

Allows you to define what are in those sets

Counters can be from DMVs, SQL Traces, Application Data

Extensible

Comes with 3 collection sets

1. Disk Usage

2. Query Statistics

3. Server Activity


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PERFORMA

NCE

RESOURCE GOVERNOR

Limit the amount of CPU by percent

Limit the amount of Memory by percent

Applied by a workload group

Workload group is defined by a custom classifier function

CREATE RESOURCE POOL [TestResourcePool] WITH(min_cpu_percent=0, max_cpu_percent=5,

min_memory_percent=0, max_memory_percent=5)

GO

CREATE WORKLOAD GROUP [TestWorkloadGroup] WITH (importance=Medium) USING [TestResourcePool]

GO

Create Function TestResourcePoolMember() Returns Sysname with schemabinding

as

Begin

Declare @name as SysName = 'default'

if (suser_name() 'sa')

Set @name = 'TestWorkloadGroup'

Return @name

End

Go

Alter Resource Governor with (Classifier_Function = dbo.TestResourcePoolMember)


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MANAGEM

ENT

POLICY-BASED MANAGEMENT

Policy management is done inside SQL Server Manager StudioCreate policies

Export Policies to XML files

Evaluate group of Servers for an exported policy

Install policies on each server or group of servers

Easier to administer and support multiple servers

Policy consists of 4 items1. Target database, table, index, etc

2. Facet predefined set of properties that can be managed

3. Condition expression on a facet that evaluates to true or false

4. Policy a condition to be checked and/or enforced


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NEWDATATYPES

DATA TYPES

Date Time2(7) - Millisecond up to 7 digits

DateTimeOffset(7) DateTime2 with Offset for TimeZone

Geometry

Geography

HierarchyID

Time(7) Time only up to 7 digit milliseconds

Date Date Only


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DEVELOPMENTENHANCEM

ENTS

QUERIES

LINQ was introduced with Visual Studio 2008SQL 2008 ships with a LINQ to SQL Provider which allows LINQ

commands directly against SQL Server

ADO.NET Entity framework allows developers to create

database queries using entities.

DEVELOPM

ENTENHANCEM

ENTS


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DEVELOPM

ENTENHANCEMENTS

SQL SERVER CHANGE TRACKING

Change Data Capture

Provides historical information for a user table by capturing both the fact that DML changes

were made and the actual data what was changed.. Changes are captured by using anasynchronous process that reads the transaction log and has a low impact on the system.

Enabling

Exec sys.sp_cdc_enable_db_change_data_capture

Go

Exec sys.sp_cdc_enable_table_change_data_capture @source_schema = dbo, @source_name =

TestTable, @Role_Name = null

Results New tables

cdc.captured_columns Information about the captured columns being tracked.

cdc.changed_tables Tables being tracked.

cdc.ddl_history Changes to the tracked table.

cdc.index_columns Tracked index columns.

cdc.lsn_time_mapping Tracks when a transaction starts and endcdc.dbo_[TableName]_ct. The actual changed data

Change Tracking

Captures the fact that rows where changed but doesnt capture what was changed.


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DEVELOPM

ENTENHANCEMENTS

TABLE VALUE PARAMETERS

Ability to declare table types and pass as variables

Sample

Create type KeyList as TABLE (RowKey int)

GO

Declare spGetRows (@KeyList KeyList)

Begin

Select *

From Employees = K.RowKey

End

Go

Declare @Rows KeyList

Insert into @Rows Values(1)

Insert into @Rows Values(2)

Exec spGetRows (@Rows)

GO


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DEVELOPM

ENTENHANCEMENTS

LARGE UDTS

UDT User Defined DatatypeIntroduced in SQL 2005 had 8k limit

SQL 2008 has varbinary(max) limit ~ 2GB


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DEVELOPM

ENTENHANCEMENTS

XML ENHANCEMENTS

Datetime, date, and time validation including timezone

information in schema collectionsBetter support for union and list types

Support for LAX validation (anytype and anyattribute

validation)

Modify method now allows DMLAdds let clause in XQuery


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SERVICEBROKER

CONVERSATION PRIORITY

Now assign a priority to Service Broker conversations

CREATE BROKER PRIORITY ConversationPriorityName

FOR CONVERSATION

[ SET ( [ CONTRACT_NAME = {ContractName | ANY } ]

[ [ , ] LOCAL_SERVICE_NAME = {LocalServiceName | ANY } ]

[ [ , ] REMOTE_SERVICE_NAME = {'RemoteServiceName' | ANY } ]

[ [ , ] PRIORITY_LEVEL = {PriorityValue | DEFAULT } ]

)

]


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DATASTORAGE

DATA COMPRESSION

Row Compression

Minimizes the metadata (Column Info, Length, Offsets, etc) associated with

each record

Numeric data types and fixed length strings are stored in variable-length

storage format like varchar.

Sample

Create Table MyTable

( Id int identity Primary Key,

Name char(100),

Email char(100))

With (Data_Compression = Row)

Alter table MyTable Rebuilt With (Data_Compression = Row, MaxDop = 2)


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DATASTORAGE

DATA COMPRESSION

Page Compression

Uses Row Compression

Prefix Compression For every column in a page prefixes are identified.Prefixes are saved in compression information headers which reside afterpage header. Reference number refers to prefix.

Dictionary Compression Searches for duplicate values in a page and storesthem in the compression information header. Prefix is only one column anddictionary is complete page.

Sample

Create Table MyTable

( Id int identity Primary Key,

Name char(100),

Email char(100))

With (Data_Compression = Page)

Alter table MyTable Rebuilt With (Data_Compression = Page, MaxDop = 2)


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DATASTORAGE

FILE STREAM

Ability to store objects in the file system but still be managed by SQLServer

Store and retrieve BLOBs together with relational data in a single data store. Included in backup and restore operations

Inserting, updating, deleting BLOBs and relational data occur in same database transaction

2GB limit of varchar(max) doesnt apply

SQL Server buffer pool (memory) is not used

BLOB access can be performed from .Net code

NTFS file system can save and retrieve data faster than SQL Server

Steps Configure SQL Server to use Filestream and appropriate level (T-SQL, local system, remote)

Create filegroup to database that contains Filestream

Add file to database filegroup that contains the Filesteam

Add column with Filestream specified in definition

SampleExec sp_filestream_configure @Enable_level =3, @share_name = FilesteamShare

GoAlter database MyDB Add Filegroup MyFileStreamFG Contains Filestream

Go

Alter database MyDB add File (name = MyDB_filestream, Filename=c:\db\fs) to filegroup MyFileStreamFG

GO

Create table TestTable(ID int identity not null, LargeObject VARBINARY(MAX) FILESTEAM NULL)

GO


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DATASTORAGE

INTEGRATED FULL TEXT SEARCH

Full Text Search is now integrated into SQL Server 2008

Improvement include:

Performance Indexing and Query

Stop Lists stored in the database

Thesaurus Improvements

DMVs

Dm_fts_index_keywords

Dm_fts_index_keywords_by_document

Dm_fts_parser


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DATASTORAGE

SPARSE COLUMNS

Sparse columns reduce the amount of storage for null values at the

sacrifice of more overhead to retrieve non-null values.

Best practice is to use when column contains 20 40 percent null values.

Sample

Create Table SparseSample

( KeyValue int idenity not null,

Name varchar(100) not null,

Address1 varchar(100) not null,

Address2 varchar(100) sparse not null,

City varchar(50) not null,

State char(2) not null,

PostalCode varchar(10) not null)


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DATASTORAGE

NEW INDEX TYPES

Filtered Index

Optimized Non-clustered index

Uses filter to index a portion of a table

Create NonClustered Index MyIndex

On TableName.ColumnName(Col1, Col2)

Where Col2 is not null

Spatial Index

Used to index geography and geometry value types

Index is created on a column

XML Index

Primary XML Index Creates clustered index on XML Column

Secondary XML Index Creates index on Path, Value or Property


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DATAWAR

EHOUSING/ETL

PARTITION TABLE PARALLELISM

Removes the 1 CPU limit on queries against partitioned tables

New syntax to switch partitioned tables

SampleAlter table PartitionTable Switch Partition 2 to NonPartitionTable


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DATAWAR

EHOUSING/ETL

ANALYSIS SERVICES

Star Join Supportoptimized for better star join query response

Better scalability- Can share read-only DBs between several servers

New tools for cube design

Improved cube backup Can support large databases

Excel data-mining add-ins

Grouping by sets


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DATAWAR

EHOUSING/ETL

INTEGRATION SERVICES (SSIS)

Persistent LookupsImproved Thread Scheduling


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DATAWAR

EHOUSING/ETL

MERGE STATEMENT

Merge statement works as an insert, update, delete statement all at once

Works on two sources of data, the source and the target

Merge Main.dbo.TestTable as Target

Using (Select Col1, col2 from stage.dbo.TestTable) as Source

On Target.TableKey = Source.TableKey

When Matched [and condition]Then Update Set Col1 = Source.Col1,

Col2 = Source.Col2

When Matched [and condition]

Then Delete

When Not Matched

Then Insert (Col1, Col2) values (Col1, Col2)Output $action, Inserted.TableKey, Deleted.TableKey


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REPORTING

REPORTING SERVICES ENHANCEMENTS

IIS no longer requiredMore charting choices

Export report to rich text format

Export report to word format

Built in forms authentication


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DEPRICATIO

N

DEPRICATION

SQL Server 6.0, 6.5 and 7.0 compatibilty modes removed

NOLOG and TRUNCATEONLY on backup commandRemote Server support

Security

Sp_addalias

sp_dropalias

Sp_addgroup

Sp_changegroup

Sp_dropgroup

Sp_helpgroup

SetUser


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Q&A

QUESTIONAND ANSWERS

Question and Answers

SQL Server 2008 New Features

Documents

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