oh, now i just understood your email. I would say this should be added to the wiki:
http://www.sqlalchemy.org/trac/wiki/DatabaseNotes which i have just done! psycopg1 is no longer supported...this float issue is just one of many. On Jun 3, 2006, at 3:42 AM, Yuan HOng wrote: > Thanks for pointing this out. I found out that psycopg 1.1.21 gives > back a Numeric as float. When I switched to psycopg2, a Decimal object > is automatically returned. > > I was switching from SQLObjects, and there the Numeric is > automatically converted to Decimal seemingly by SQLObjects, so I took > that for granted. Maybe this should also be added to SA, since then > the application won't be dependant on the return type of the DBAPI > layer? > > On 6/3/06, Michael Bayer <[EMAIL PROTECTED]> wrote: >> the float type coming from Numeric etc. is straight from the DBAPI, >> in this case psycopg2. If youd like to make your own Decimal type >> which translates this value back and forth from whatever float value >> psycopg2 is giving you, simply subclass TypeDecorator, specify >> Numeric as the 'impl', and implement the appropriate >> convert_bind_param(), convert_result_value() methods. >> >> instructions are here: >> >> http://www.sqlalchemy.org/docs/types.myt#types_custom >> >> if you get that done, theres no reason it cant be stuck into the >> types module, just wouldnt be available if youre on 2.3. >> > -- > Hong Yuan > > 大管家网上建材超市 > 装修装潢建材一站式购物 > http://www.homemaster.cn > _______________________________________________ > Sqlalchemy-users mailing list > Sqlalchemy-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sqlalchemy-users _______________________________________________ Sqlalchemy-users mailing list Sqlalchemy-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlalchemy-users
