On Tue, Apr 22, 2008 at 6:00 PM, <[EMAIL PROTECTED]> wrote:
>
>
> On Tuesday 22 April 2008 19:54:16 Lukasz Szybalski wrote:
> > Hello again,
> > So now that I have mssql connection ready and data filtered out and
> > processed I need to save it to a different database.
> >
> > mssql -> process data -> save to mysql
> >
> > I am wondering how should I create a second database connection? In
> > second database I will create a table and populate the records.
> >
> > # First database
> > e =
> > sqlalchemy.create_engine("mssql://user:[EMAIL PROTECTED]:1433/dbname?dr
> >iver=TDS&odbc_options='TDS_Version=8.0'") #e.echo=True
> > metadata=sqlalchemy.MetaData(e)
> >
> > #session stuff
> > from sqlalchemy.orm import sessionmaker
> > Session = sessionmaker(bind=e, autoflush=True, transactional=True)
> > session = Session()
> >
> > #table stuff
> > class th(object):
> > pass
> > th_table = sqlalchemy.Table('xxxx', metadata, autoload=True)
> > mapper(th,th_table)
> >
> > # database number 2. Is this the way I should create second
> > database connection/session/mapper?
> > e2 = sqlalchemy.create_engine('mysql://user:[EMAIL PROTECTED]/dbname')
> >
> > Do I create new metadata?
> > metadata2=sqlalchemy.MetaData(e2)
> > And then new session2?
> > Session2 = sessionmaker(bind=e2, autoflush=True,
> > transactional=True) What does this line do?
> > session = Session()
> >
> > Is the above correct way of doing this?
> > I would like to keep these connections separate so there will be no
> > confusion of what I am using.
> >
> > Thanks,
> > Lucas
>
> well... u dont really need 2nd metadata, and u dont need any
> session/mappers/etc ORM-stuff at all. re-bind the metadata to new
> engine, then metadata.createall(), and then for each record in each
> table in metadata, tbl.select via src_engine, tbl.insert via
> dst_engine
>
> but u can try this way too..
>
these are 2 different databases...
one is all autoload
and two is completely new and will not have any tables from 1.
Lucas
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