> > Eric Smith wrote: >> >> I'm writing a new database dialect for sqlalchemy 0.6 for Netezza. This >> is on Windows. I have an ODBC driver for Netezza. A couple of questions: >> >> - Why isn't there a generic "talk to an ODBC source" dialect? I >> thought that was the beauty of ODBC. Is this possible and just >> hasn't been done, or is there some technical reason that (for >> example) the SQL Server ODBC dialect won't just work? > > there is. it is in sqlalchemy/connectors/pyodbc.py . There is also a > placeholder for mxodbc if someone wants to take that up. > >> >> - Is there some documentation on writing a dialect, specifically >> for 0.6? I've looked around, but not found anything. Or is my >> best bet just to look at an existing dialect? > > you should read the docstring in sqlalchemy/engine/base.py Dialect(), the > "type_migration_guidelines.txt" document, as well as "TESTING NEW > DIALECTS" in the README.unittests file. From there you'll be looking to > emulate the existing dialects for file and object structure. You also > should consider if you'd like your dialect to remain as a separate product > or be part of inclusion to SQLA core. There's really no downside to > maintaining as a separate product since you can release bugfixes on an > independent schedule, and is how IBM's DB2 dialect works - your dialect is > installed as a setuptools entrypoint > "sqlalchemy.dialects.netazza+dbapiname".
Okay, thanks. It looks like the easiest thing to do is to clone the mssql dialect (or mssql+pyodbc) and modify that until I get it to work with Netezza. I'll probably grab parts of the postgres dialect, since I think Netezza is based on that. Thanks again for the pointers. Eric. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
