SQL Server 2008 List of New Features
By: Chad Boyd | Comments | Related: More > Upgrades and Migrations
So, I've been getting quite a few pings about providing a list of new features to look for in Katmai (Sql 2008) - well, I put together a list below, and this isn't even everything (though it's a lot of the major stuff) - I even tried to categorize it (and some things may appear in multiple categories). I'll be blogging/presenting/etc. on many, many of these in the coming months, so stay tuned:
Security/Auditing
- Transparent Data Encryption (encryption while data is 'still' on disk, transparent to applications)
- External Key Management (Consolidation of key management, integration with external products)
- Data Auditing (1st-class 'AUDIT' objects; DDL support; audit objects, principals, data, etc.; support for multiple logging targets)
Availability/Reliability
- Hot-Pluggable CPU support
- Enhanced Database Mirroring (compression of mirror streams, enhanced performance, automatic page-level repair for principal/mirror)
Performance
- Data compression (easy to enable/disable online, more efficient data storage (this is NOT traditional data compression))
- Backup stream compression (server level control or backup statement control, all backup types)
- Data collection (single, common framework for data collection, reporting, and storage/warehousing)
- Performance data studio
- Improved Plan Guide support (plan freezing, pull plans directly from plan cache, SSMS integration, etc.)
- Improved transaction logging (bulk-logging of INSERT INTO and MERGE statements)
- Resource Governor (create pools and groups to govern, define classifications based on built-in functions, segment resource utilization amoung groups)
Management
- Policy-based management framework (manage via policies vs. scripts, enterprise-wide support, automated monitoring/enforcement, etc.)
- Integrate with Microsoft System Center
- Extended Events (high perf lightweight tracing infrastructure, NOT sql trace, integrated with ETW, unprecidented insight into goings-on)
- Powershell integration / provider
- Powershell scripting support in SQL Agent
- Server Group Managment (multi-server support for DMF, ad-hoc queries, etc.)
Development Enhancements
- Improved datetime datatypes (100th nanosecond precision (7 digits past second), time-zone datetime offset, date only, time only)
- HierarchyID datatype (hierarchical-aware data type, ORDPath values, built-in functions, methods, etc.)
- Entity Data Model support (develop 'business entities' vs. tables, model complex relationships, retrieve entities vs. rows/columns)
- LINQ
- Sql Server Change Tracking (Change Data Capture, get 'diff' data changes WITHOUT a comparible value (i.e. datetime, timestamp, etc.))
- Table Valued Parameters
- MERGE statement ('upsert' data, also includes deletion functionality)
- Large UDT's and UDA's (no more 8000 byte limit on CLR-based UDTs, no more 8000 byte limit for UDA's)
- Multi-parameter UDA's (pass multiple parameters to a UDA)
- ORDERED user defined tables (able to specify ordering specifications for UDF's to allow better optimizer decisions)
- Spatial data (GEOMETRY and GEOGRAPHY data types, built-in spatial function support, spatial indexes)
- XML enhancements (support for lax validation, office 12 support, xs:dateTime support, lists/union types, LET FLOWR support, etc.)
- Inline initialization and compound assignment
- Intellisense
- Insert over DML (Consume output from OUTPUT)
Service Broker
- New UI and Tools for working with (add/drop/edit functionality within SSMS, Diag tools, )
- Conversation Priority (set message ordering, send/receive impact, 1-10 levels)
Data Storage
- Data compression (see above)
- FILESTREAM attribute (get the 'best of both' functionality from BLOBs in the DB vs. BLOBs on filesystem, no more "to blob or not to blob")
- Integrated Full Text Search (FTS fully integrated into DB engine, no external storage, no external service, more efficient and reliable costing)
- Sparse columns (more efficient storage for 'wide' tables with many columns that repeat and don't contain data)
- Filtered indexes (indexes with WHERE clauses)
- New index types (spatial indexes, hierarchical indexes, FILTERED indexes (indexes on filtered values within columns), etc.)
Data Warehousing/ETL
- Partitioned Table Parallelism (no more thread limit per partition)
- Star/Snowflake join performance improvements (no special syntax, optimizer based, uses BITMAP filtering, full backward syntax support)
- Data compression (see above)
- Resource Governor (see above)
- Persistent Lookups in SSIS (no more re-querying for lookup operators, cache lookups in multiple ways, persist lookups to disk)
- Improved thread scheduling in SSIS (shared thread pool, pipeline parallelism)
- Change Data Capture (see above)
- MERGE statement (see above, great uses with slowly changing dimensions)
- Scale-out analysis services (read-only storage supports multiple AS servers)
- Subspace computations
- New Tools for Cube design
- Best Practice Design Alerting
- Backup cubes with better scalability
- Data-mining add-ins for Excell
Reporting
- IIS Agnostic Reporting Services Deployment (no IIS required to run RS any longer)
- Rich-text support
- Enhanced visualiztion (graphing)
- New Word rendering (render reports to Microsoft Word)
Deprecation
- Many 'old' features ARE REMOVED/GONE (those that have been deprecated for some time - 60/65/70 compat modes, nolog / truncateonly syntax, etc.)
That's the list I've got for now...I'm sure I missed something or 2, and I'll continue to add to the list if I see something left out. I'm sure there are LOTS of questions around each of these, so I'll be continuing to blog on subsets of the features in-depth over the next few weeks/months. If there are specific questions, by all means post to this blog and/or email me via this blog, and I'll be sure to answer them directly or in a post covering the topic in question. Stay tuned!
About the author
Chad Boyd is an Architect, Administrator and Developer with technologies such as SQL Server, .NET, and Windows Server.
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