Michael, I can execute a stored procedure from SQLAlchemy, but I can't get a result set back out of SQLAlchemy. I've verified that the SP executes as expected and I know that it's returning a result set. I'm following what's been suggested on this forum http://groups.google.com/group/sqlalchemy/browse_thread/thread/12e3360ee7efe15d and http://www.mail-archive.com/sqlalchemy@googlegroups.com/msg08048.html.
What type of question do you think I should ask on the pyodbc forum? It seems the issue is that a bug that was fixed in a previous version of SQLAlchemy has crept back in. I might be able to fix it with a little help, but things have changed quite a bit since the changeset that fixed it last time(see previous post on this thread) and I'm not sure where to start. On May 11, 9:32 am, "Michael Bayer" <mike...@zzzcomputing.com> wrote: > Email on the pyodbc mailing list for instructions on how to execute a > stored procedure. The information there will guide how this is done > with SQLAlchemy. > > Daniel wrote: > > > Any reply on this? Should I submit a new bug report? > > > On May 8, 11:49 am, Daniel <daniel.watr...@gmail.com> wrote: > >> I've just been looking through the code in mssql.py and the change > >> mentioned in the changeset I mentioned isn't there anymore. I also > >> can't see that's it's been abstracted to a parent class. Is there a > >> possibility that this bug has crept back in? > > >> If so, let me know where the sensible place would be to include the > >> EXEC keyword in order to return result sets for MSSQL stored > >> procedures, or if there would be a better approach. > > >> Thanks. > > >> On May 8, 11:24 am, Daniel <daniel.watr...@gmail.com> wrote: > > >> > Michael, > > >> > I just found this > >> thread:http://www.mail-archive.com/sqlalchemy@googlegroups.com/msg08048.html > >> > which corresponds to this > >> changeset:http://www.sqlalchemy.org/trac/changeset/4159 > > >> > It seems that this issue has come up in the past. I've tried the > >> > following modified query: > >> > result = conn.execute('EXEC claim_highest_priority_work') > >> > which should satisfy the regexp, but it still produces the closed > >> > cursor error. > > >> > Not sure if this helps you help me... > > >> > On May 8, 11:09 am, Daniel <daniel.watr...@gmail.com> wrote: > > >> > > Michael, > > >> > > I'm not sure if this helps, but I've noticed that if my stored > >> > > procedure returns all null values, then I can fetch them. If they > >> are > >> > > non-null values I get an error: > > >> > > [Dbg]>>> result = conn.execute('claim_highest_priority_work') > >> > > [Dbg]>>> print result.fetchone() > >> > > Traceback (most recent call last): > >> > > File "<interactive input>", line 1, in <module> > >> > > File "C:\Python25\Lib\site-packages\sqlalchemy\engine\base.py", > >> line > >> > > 1668, in fetchone > >> > > self.connection._handle_dbapi_exception(e, None, None, > >> > > self.cursor, self.context) > >> > > File "C:\Python25\Lib\site-packages\sqlalchemy\engine\base.py", > >> line > >> > > 931, in _handle_dbapi_exception > >> > > raise exc.DBAPIError.instance(statement, parameters, e, > >> > > connection_invalidated=is_disconnect) > >> > > ProgrammingError: (ProgrammingError) Attempt to use a closed cursor. > >> > > None None > >> > > [Dbg]>>> result = conn.execute('claim_highest_priority_work') > >> > > [Dbg]>>> print result.fetchone() > >> > > (None, None, None, None, None) > > >> > > Any idea why this would be? > > >> > > On May 8, 10:46 am, "Michael Bayer" <mike...@zzzcomputing.com> > >> wrote: > > >> > > > Daniel wrote: > > >> > > > > Thanks Michael, > > >> > > > > When I try that it produces this SQL > >> > > > > SELECT claim_highest_priority_work() AS > >> claim_highest_priority_work_1 > > >> > > > > and this error > >> > > > > 'claim_highest_priority_work' is not a recognized built-in > >> function > >> > > > > name. > > >> > > > this is more of an MSSQL "how to" issue then. on most databases, > >> running > >> > > > a function and returning results looks like "SELECT function()". > >> On > >> > > > oracle, its "SELECT function() FROM DUAL". What is it on MSSQL ? > > >> > > > > On May 8, 10:20 am, "Michael Bayer" <mike...@zzzcomputing.com> > >> wrote: > >> > > > >> Daniel wrote: > > >> > > > >> > Hello, > > >> > > > >> > I've created a stored procedure in MSSQL. I'm not sure how > >> to use it > >> > > > >> > in SQLAlchemy. The stored procedure is called > >> > > > >> > 'claim_highest_priority_work' and I can call it directly as > >> follows: > > >> > > > >> > result = conn.execute('claim_highest_priority_work') > > >> > > > >> > I know it runs because I see the result in the database, but > >> I'm not > >> > > > >> > sure how to access the return values? They exactly match one > >> of the > >> > > > >> > tables I've defined. > > >> > > > >> > What's the right way to map/execute a stored procedure and > >> > > > >> > subsequently access what it returns? > > >> > > > >> you probably want to select from it. an expression construct > >> which > >> > > > >> achieves this would be: > > >> > > > >> select([func.claim_highest_priority_work()]) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
