how to use begin and commit in sql? code example

Example 1: begin transaction in sql

BEGIN TRANSACTION [Tran1]

  BEGIN TRY

      INSERT INTO [Test].[dbo].[T1] ([Title], [AVG])
      VALUES ('Tidd130', 130), ('Tidd230', 230)

      UPDATE [Test].[dbo].[T1]
      SET [Title] = N'az2' ,[AVG] = 1
      WHERE [dbo].[T1].[Title] = N'az'

      COMMIT TRANSACTION [Tran1]

  END TRY

  BEGIN CATCH

      ROLLBACK TRANSACTION [Tran1]

  END CATCH

Example 2: sql begin transaction

--Applies to SQL Server and Azure SQL Database
 
BEGIN { TRAN | TRANSACTION }   
    [ { transaction_name | @tran_name_variable }  
      [ WITH MARK [ 'description' ] ]  
    ]  
[ ; ]