About the use of RAISERROR in stored procedures

We generally throw exceptions in this way:
RAISERROR (@ErrorMsg, 16, 1)

1, if we add the Try Catch module to the stored procedure, then when the execution reaches RAISERROR, it will jump directly to the Catch module.
For example:

DECLARE @ErrorMsg VARCHAR(2000)

BEGIN TRY
  SELECT 1

  RAISERROR ('reported an error', 16, 1)

  SELECT 2
END TRY
BEGIN CATCH
  SELECT @ErrorMsg = ERROR_MESSAGE()
  RAISERROR (@ErrorMsg, 16, 1)
END CATCH

The above code will not execute Select 2

2, if we do not add the Try Catch module in the stored procedure.
For example:

  SELECT 1

  RAISERROR ('reported an error', 16, 1)

  SELECT 2

The execution order of the above code is:
Select 1
throws an exception
Select 2

Here Select 2 does not need to be executed in most cases,
so we can write it like this

  SELECT 1

  RAISERROR ('reported an error', 16, 1)
  RETURN

  SELECT 2

But we recommend using the Try Catch module as much as possible