All database statements are executed within the context of a physical transaction, even when we don’t explicitly declare transaction boundaries (BEGIN/COMMIT/ROLLBACK). If you don’t declare the transaction boundaries, then each statement will have to be executed in a separate transaction. This may even lead to opening and closing one connection per statement. Declaring a service … Read more
Perhaps the best way is to write a script that starts the mysql command line client and then automatically runs whatever sql you want before it hands over the control to you. linux comes with an application called ‘expect’. it interacts with the shell in such a way as to mimic your key strokes. it … Read more
A large object can be stored in several records, that’s why you have to use a transaction. All records are correct or nothing at all. https://www.postgresql.org/docs/current/static/largeobjects.html
You can turn autocommit ON by setting implicit_transactions OFF: SET IMPLICIT_TRANSACTIONS OFF When the setting is ON, it returns to implicit transaction mode. In implicit transaction mode, every change you make starts a transactions which you have to commit manually. Maybe an example is clearer. This will write a change to the database: SET IMPLICIT_TRANSACTIONS … Read more