What database server do you use?
2015-01-17 0:49 GMT+01:00 Brian Glogower <bglogo...@ifwe.co>:
> Hi all,
>
> I am trying to do a join between two tables, each residing on a separate
> databases.
>
> Here is the table info for both. I have removed extraneous columns from
> each table.
>
> Table A from DB 1:
>
> class Host(Base):
> __tablename__ = 'hosts'
> __table_args__ = {'mysql_engine': 'InnoDB'}
>
> id = Column(u'HostID', INTEGER(), primary_key=True)
> hostname = Column(String(length=30))
>
> Table B from DB 2:
>
> class ssh_host_keys(Base):
> __tablename__ = 'ssh_host_keys'
> __table_args__ = {'mysql_engine': 'InnoDB'}
>
> hostname = Column(VARCHAR(30), primary_key=True)
> sha256 = Column(CHAR(64))
>
> I would like to use the sqlalchemy orm to do something like the following
> query:
>
> SELECT hostname, sha256 FROM hosts LEFT JOIN ssh_host_keys ON
> ssh_host_keys.hostname == hosts.hostname
>
> I did some searching and did find
> https://www.mail-archive.com/sqlalchemy@googlegroups.com/msg14445.html,
> but there wasn't enough details for me to get it working (I am a sqlalchemy
> novice).
>
> Is what I want to do even possible with sqlalchemy?
>
> Thanks,
> Brian
>
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