have inheriting mappers create their polymorphic queries automatically

zzzeek / sqla_issue_test

1 stars 0 forks source link

have inheriting mappers create their polymorphic queries automatically #195

Closed zzzeek closed 6 years ago

zzzeek commented 18 years ago

Originally reported by: Michael Bayer (Bitbucket: zzzeek, GitHub: zzzeek)

this is blocked by #194.

Bitbucket: https://bitbucket.org/zzzeek/sqlalchemy/issue/195

zzzeek commented 16 years ago

Original comment by Michael Bayer (Bitbucket: zzzeek, GitHub: zzzeek):

0.4 does this with the with_polymorphic option. concrete table/hybrid setups will always require polymorphic_union usage tho.

zzzeek commented 17 years ago

Original comment by Michael Bayer (Bitbucket: zzzeek, GitHub: zzzeek):

we have two options to polymorphic queries now..first of all, they can be easily constructed with outerjoins for a joined-table inheritance mapping. also 0.4 allows polymorhic loading without a union for a similar case. concrete table inheritance remains the difficult case.