I'll try to make this succinct... I'm creating a temporary table and then doing a query with it that takes a good length of time. I found that the source tables going into the temporary table were being locked after the temporary table was created even though they were no longer needed for the second much longer query. Apparently "create temporary table" in MySQL doesn't autocommit and so the transaction is locking a lot more than needed. So... I tried committing right after creating the temporary table, but now I randomly lose the temporary table because SQLAlchemy sees the commit as a reason to return the connection back to the connection pool and then get back another connection on the next query. So, as the temporary table is persistent only on that connection I usually lose the table as I usually don't get the very same connection back from the pool.
I'd like to be able to tell MySQL to commit after creating the temporary table so I can drop the locks used to fill that table, but I want to make sure SQLAlchemy doesn't let go of the connection and return it to the pool. -- 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.
