whereby setting a non-None self-referential
many-to-one relationship to None
would fail to persist the change if the
former value was not already loaded.
[ticket:2477].
[ticket:2409] whereby column_mapped_collection
used against columns that were mapped as
joins or other indirect selectables
would fail to function.
Here, the serialize use case has gotten very complex since to
really target a column we'd need the root MetaData object,
then if we're hitting Alias objects and such there's really
nothing to hold onto. Short of building a system where
Column objects have some kind of master hash identifier that
is consistently generated, the way this works can't really
suit every case - much easier would be to change the mechanics
of collections.py to make available the Mapper to the
collection adapter when it's first invoked.
requires that the updated table be present
in the FROM clause when an alias of that
table is also present in the FROM clause.
The updated table is now always present
in the FROM, when FROM is present
in the first place. Courtesy sayap.
[ticket:2468]
on a SQL expression whose type is not supported
by cast() and therefore CAST isn't rendered by
the dialect, the order of evaluation could change
if the casted expression required that it be
grouped; grouping is now applied to those
expressions. [ticket:2467]
include_removes. When True, collection
remove and attribute del events
will also be sent to the validation function,
which accepts an additional argument
"is_remove" when this flag is used.
built in quoting for the "idx_" name as well
- [bug] Fixed bug whereby column name inside
of "KEY" clause for autoincrement composite
column with InnoDB would double quote a
name that's a reserved word. Courtesy Jeff
Dairiki. [ticket:2460]
create_engine() flag when using the pyodbc
dialect. Previously this flag would be
ignored if set to False. When set to False,
you'll get "SELECT @@identity" after each
INSERT to get at the last inserted ID,
for those tables which have "implicit_returning"
set to False.
- [bug] Removed warning when Index is created
with no columns; while this might not be what
the user intended, it is a valid use case
as an Index could be a placeholder for just an
index of a certain name.
- mssql
- [feature] Added interim create_engine flag
supports_unicode_binds to PyODBC dialect,
to force whether or not the dialect
passes Python unicode literals to PyODBC
or not.
mechanics which could lead to incorrect
rendering of SELECT statements with aliases
and joins, particularly when using
column_property(). [ticket:2453]
- [feature] Added prefix_with() method
to Query, calls upon select().prefix_with()
to allow placement of MySQL SELECT
directives in statements. Courtesy
Diana Clarke [ticket:2443]
Mike Bayer
Priit Laes
Franck Cuny
Benjamin Trofatter
elazar
Jeff Dairiki
Diana Clarke