how to reset id column in sql server code example
Example 1: tsql reseed identity
USE AdventureWorks2012;
GO
DBCC CHECKIDENT ('Person.AddressType', RESEED, 10);
GO
Example 2: reset identity column in sql server
DBCC CHECKIDENT ('YourTableName', RESEED, 1)
Example 3: how to reset the identity column in sql server
USE <databasename>;
GO
DBCC CHECKIDENT ('<tablename>.<columnname>', <value>, <incrementby>);
GO