I read that I can have different isolation levels per connection and in the server.
The default isolation level is REPEATABLE-READ.
So if I have a transaction that issues a
SERIALIZED to the client connection, how does it interact with other transactions from other client connections? Do they all end up being serialized? From set transaction seems not:
With the SESSION keyword, the statement sets the default transaction level for all subsequent transactions performed within the current session.
But this seems useless to me. I mean if I set serialized to a client connection then I would want all currently running transactions to be sequential, right? Otherwise what's the point?