I'm trying to lock rows when I select because I intend to update them shortly thereafter. I don't want another session in another process to simultaneously be reading/updating. In code:
# ... all necessary setup and Session creation session = Session() with session.no_autoflush: session.begin_nested() objects_protected_from_concurrent_access = session.query(Object).with_for_update().all() # ... edit some of the objects here objects_protected_from_concurrent_access[0].field_one += 1 session.commit() But for some reason on the `with_for_update()`, the connection hangs until a timeout error (1205 Operational Error) occurs. There's no other processes talking to the database. Checking MySQL's SHOW PROCESSLIST; Reveals nothing unexpected (no processes except Sequel Pro before, then1 process from the box I'm running SQLAlchemy on, and 1 making the SHOW PROCESSLIST query from Sequel Pro afterwards). How can I best do what I'm trying to do? And is what I'm seeing a bug or a feature? -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/groups/opt_out.
