After a database operation statement fails, it does not have to be rollback

See title
Prerequisites Autocommit=false Melt-off level is read commit, do not use statement lock
When a sentence goes wrong, it does not change the data itself, it does not change the data, there is no lock resources, so do not rollback
This is only for a single statement, but multiple statements need to be rollback. Because the previous data has been changed, the latter fails. So undo the previous results and release the resources.

When Autocommit=false is set, the database automatically executes BEGIN TRAN
When a commit or rollback is executed, it also automatically executes the BEGIN Tran
This function is provided in the database, not PB band
In addition, some statements of the data window, such as update, use the transaction savepoint to hold the previous transaction, if the database does not support transactions
Even the previous results were undone after a possible failure.