reset id in sql server code example

Example 1: tsql reseed identity

USE AdventureWorks2012;  
GO  
DBCC CHECKIDENT ('Person.AddressType', RESEED, 10);  
GO

Example 2: how to reset the identity column in sql server

USE <databasename>;  
GO  
DBCC CHECKIDENT ('<tablename>.<columnname>', <value>, <incrementby>);  
GO