On Aug 11, 2012, at 5:50 AM, Warwick Prince wrote: >> >> On Aug 10, 2012, at 5:19 AM, Warwick Prince wrote: >> >>> Hi All >>> >>> If I have a Column() object, is there a way of determining the sqlalchemy >>> type from the dialect specific type? e.g. I have a Postgres TIMESTAMP >>> column, and I want to be able to map that back the a sqa DateTime type. >> >> >> column.type._type_affinity >> > I have moved on now with this information, but I've hit a snag which appears > to be bug in either core or possibly (more likely) mysqlconnector. > > When I ask for column.type._type_affinity on a LONGBLOB column in a MySQL > database, it returns _Binary which is not correct (Should be LargeBinary). > Please confirm if this is a core issue, or should I go hunting in the > connector code?
_type_affinity is semi-public right now so is possibly not exactly tailored towards what you're doing right now. Your best bet is to keep using it, but also use a lookup table (dictionary: {LONGBLOB:_LargeBinary} ) to make corrections in cases like these. A public feature version of _type_affinity would be able to have more general use contract but I don't want to tweak _type_affinity directly right now as I'd need to spend time determining the impact of that. -- 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.