Differences between SQL Server 2008/R2 and 2012

Sr. No.	Sql server 2008 R2	Sql server 2012
1	Exceptions handle using TRY….CATCH	Unique Exceptions handling with THROW
2	High Availability features as Log Shipping, Replication, Mirroring & Clustering	New Feature ALWAYS ON introduced with addition of 2008 features.
3	Web Development and Business Intelligence Enhanced with business intelligence features. Excel PowerPivot by adding more drill and KPI through.	In Addition with SQL server 2008, Web Development and Business Intelligence Enhanced with business intelligence features and Excel PowerPivot by adding more drill and KPI’s.
4	Could not supported for Windows Server Core Support.	Supported for Windows Server Core Support
5	Columnstore Indexes not supported.	New Columnstore Indexes feature that is completely unique to SQL Server. They are special type of read-only index designed to be use with Data Warehouse queries. Basically, data is grouped and stored in a flat, compressed column index, greatly reducing I/O and memory utilization on large queries.
6	PowerShell Supported	Enhanced PowerShell Supported
7	Distributed replay features not available.	Distributed replay allows you to capture a workload on a production server, and replay it on another machine. This way changes in underlying schemas, support packs, or hardware changes can be tested under production conditions.
8	PowerView not available in BI features	PowerView is a fairly powerful self-service BI toolkit that allows users to create mash ups of BI reports from all over the Enterprise.
9	EXECUTE … with RECOMPLIE feature	Enhanced EXECUTE with many option like WITH RESULT SET….
10	Maximum numbers of concurrent connections to SQL Server 2008 is 32767	SQL server 2012 has unlimited concurrent connections.
11	The SQL Server 2008 uses 27 bit bit precision for spatial calculations.	The SQL Server 2012 uses 48 bit precision for spatial calculations
12	TRY_CONVERT() and FORMAT() functions are not available in SQL Server 2008	TRY_CONVERT() and FORMAT() functions are newly included in SQL Server 2012
13	ORDER BY Clause does not have OFFSET / FETCH options for paging	ORDER BY Clause have OFFSET / FETCH options for paging
14	SQL Server 2008 is code named as Katmai.	SQL Server 2012 is code named as Denali
15	In SQL Server 2008, audit is an Enterprise-only feature. Only available in Enterprise, Evaluation, and Developer Edition.	In SQL Server 2012,support for server auditing is expanded to include all editions of SQL Server.
16	Sequence is not available in SQL Server 2008	Sequence is included in SQL Server 2012.Sequence is a user defined object that generates a sequence of a number