Saturday, June 30, 2012

SQL Server 2012: Sequence Objects

In an older article on my blog, I wrote on how someone can mimic the operation of Sequence Objects using other alternative ways.

With the general availability of SQL Server 2012, now Sequence Objects are here!

So, how can we use a Sequence Object in SQL Server 2012?

Let's skip the words and move directly to an example:


--Select the proper database
USE [DATABASE_NAME]
GO


-- Create the Sequence Object (TestSeq is my Sequence's name)
CREATE SEQUENCE TestSeq
    AS bigint
START WITH 0
    INCREMENT BY 1
GO


--To get the next value from the Sequence
SELECT NEXT VALUE FOR TestSeq


--To drop the sequence
DROP SEQUENCE TestSeq
GO


--To reset the sequence 
--You can replace 0 with any other constant value
ALTER SEQUENCE TestSeq
RESTART WITH 0
GO


Simple enough right?
Enjoy Sequence objects in SQL Server 2012! :)

Cheers,
Artemakis


[Ads]
Check out my latest eBook on SQL Server:
Tuning SQL Server - Ebook

Easily secure your SQL Server instances! Try out DBA Security Advisor!
DBA Security Advisor for SQL Server by SQLArtBits
DBA Security Advisor was developed by SQLArtBits. The tool was being carefully developed for an entire year and it contains comprehensive security checks and recommendations based on proven SQL Server security best practices. Feel free to download and use the Community Edition which is free and if you find it useful, you can consider upgrading to the Enterprise Edition!

Artemakis Artemiou [MVP]

Author & Editor

Artemakis Artemiou is a Senior SQL Server Architect, Software Developer and Microsoft Data Platform MVP. He is also an author, regular blogger, president of Cyprus.NET User Group and CY Country leader of INETA-EU. He is also the creator of DBA Security Advisor and In-Memory OLTP Simulator. Artemakis is a frequent guest author of worldwide well-respected online journals where he writes articles focusing on many SQL Server topics.

Reference: The SQL Server and .NET Hub (http://www.sqlnethub.com)

0 comments: