provides the functionality of query.with_polymorphic()
in a standalone form. It can be applied to any
entity within a query, including as the target
of a join in place of the "of_type()" modifier.
[ticket:2333]
- redo a large portion of the inheritance docs in terms
of declarative, new with_polymorphic() function
- upgrade examples/inheritance/polymorph, rename to "joined"
invokes common table expression support
from the Core (see below). [ticket:1859]
- [feature] Added support for SQL standard
common table expressions (CTE), allowing
SELECT objects as the CTE source (DML
not yet supported). This is invoked via
the cte() method on any select() construct.
[ticket:1859]
would not get the appropriate collection
instrumentation if it were only used
in a custom subclass that used
@collection.internally_instrumented.
[ticket:2406]
- added docs for collection
loader options to allow "default" loader strategies.
Pass '*' to any of joinedload(), lazyload(),
subqueryload(), or noload() and that becomes the
loader strategy used for all relationships,
except for those explicitly stated in the
Query. Thanks to up-and-coming contributor
Kent Bower for an exhaustive and well
written test suite ! [ticket:2351]
new kinds of values:
- standalone expressions that aren't
otherwise mapped
- column_property() objects
- string names of any column_property()
or attribute name of a mapped Column
The docs include an example using
the case() construct, which is likely to be
a common constructed used here.
[ticket:2345] and part of [ticket:2238]
- [feature] Added new value for Column autoincrement
called "ignore_fk", can be used to force autoincrement
on a column that's still part of a ForeignKeyConstraint.
New example in the relationship docs illustrates
its use.
to pg.ENUM. When False, no CREATE/DROP or
checking for the type will be performed as part
of a table create/drop event; only the
create()/drop)() methods called directly
will do this. Helps with Alembic "offline"
scripts.
- de-emphasize contains_alias() which is pretty much a non-use case
- add docs for immediateload which have been missing all this time
- fix links, formatting
Mike Bayer