that have problems with right-nested joins and UNION column keys;
references #3633 references #3634. backport from 1.1 to 0.9
announcing 1.1 as where these behaviors will be retired based
on version-specific checks
- fix test_resultset so that it passes when SQLite 3.10.0 is
present, references #3633
available mapper options. This allows a DELETE to proceed
for a joined-table inheritance mapping against the base table only,
while allowing for ON DELETE CASCADE to handle deleting the row
from the subclass tables.
fixes#2349
when the construct contains non-standard sql elements such as
returning, array index operations, or dialect-specific or custom
datatypes. a string is now returned in these cases rendering an
approximation of the construct (typically the postgresql-style
version of it) rather than raising an error. fixes#3631
- add within_group to top-level imports
- add eq_ignore_whitespace to sqlalchemy.testing imports
a base class and a concrete-inherited subclass would raise an error
if those relationships were set up using "backref", while setting up the
identical configuration using relationship() instead with the conflicting
names would succeed, as is allowed in the case of a concrete mapping.
fixes#3630
the :class:`.Engine` to which the :class:`.Session` is bound, when
generating the string form of the SQL, so that the actual SQL
that would be emitted to the database is shown, if possible. Previously,
only the engine associated with the :class:`.MetaData` to which the
mappings are associated would be used, if present. If
no bind can be located either on the :class:`.Session` or on
the :class:`.MetaData` to which the mappings are associated, then
the "default" dialect is used to render the SQL, as was the case
previously. fixes#3081
the exception to itself as the "cause"; while the Python 3 interpreter
is OK with this, it could cause endless loops in iPython.
fixes#3625
- add tests for reraise, raise_from_cause
- raise_from_cause is the same on py2k/3k, use just one function
method, and its interaction with result-row processing, now allows
the columns passed to the method to be positionally matched with the
result columns in the statement, rather than matching on name alone.
The advantage to this includes that when linking a textual SQL statement
to an ORM or Core table model, no system of labeling or de-duping of
common column names needs to occur, which also means there's no need
to worry about how label names match to ORM columns and so-forth. In
addition, the :class:`.ResultProxy` has been further enhanced to
map column and string keys to a row with greater precision in some
cases. fixes#3501
- reorganize the initialization of ResultMetaData for readability
and complexity; use the name "cursor_description", define the
task of "merging" cursor_description with compiled column information
as its own function, and also define "name extraction" as a separate task.
- fully change the name we use in the "ambiguous column" error to be the
actual name that was ambiguous, modify the C ext also
system failed to accommodate for multiple :func:`.undefer_group`
loader options in a single query. Multiple :func:`.undefer_group`
options will now be taken into account even against the same
entity. fixes#3623
This supports the use case of an application that uses the same set of
:class:`.Table` objects in many schemas, such as schema-per-user.
A new execution option
:paramref:`.Connection.execution_options.schema_translate_map` is
added. fixes#2685
- latest tox doesn't like the {posargs} in the profile rerunner
Mike Bayer