- The "sqlalchemy.exceptions" alias in sys.modules
has been removed. Base SQLA exceptions are
available via "from sqlalchemy import exc".
The "exceptions" alias for "exc" remains in
"sqlalchemy" for now, it's just not patched into
sys.modules.
loads during a flush(). A change in version 0.6.6
([ticket:2002]) required that more "unnecessary" m2o
loads during a flush could occur. Extra loading modes have
been added so that the SQL emitted in this
specific use case is trimmed back, while still
retrieving the information the flush needs in order
to not miss anything. [ticket:2049]
ClauseElement has been explicitly moved to Executable,
i.e. the mixin that describes ClauseElements which represent
engine-executable constructs. This change is an improvement
to internal organization and is unlikely to affect any
real-world usage. [ticket:2048]
classes, produces the _Over() construct which
in turn generates "window functions", i.e.
"<window function> OVER (PARTITION BY <partition by>,
ORDER BY <order by>)".
[ticket:1844]
normalized via os.path.abspath(), so that directory changes
within the process don't affect the ultimate location
of a relative file path. [ticket:2036]
as *args, interpreted by the Postgresql dialect
as DISTINCT ON (<expr>). [ticket:1069]
- select.distinct() now accepts column expressions
as *args, interpreted by the Postgresql dialect
as DISTINCT ON (<expr>). Note this was already
available via passing a list to the `distinct`
keyword argument to select(). [ticket:1069]
- select.prefix_with() accepts multiple expressions
(i.e. *expr), 'prefix' keyword argument to select()
accepts a list or tuple.
- Passing a string to the `distinct` keyword argument
of `select()` for the purpose of emitting special
MySQL keywords (DISTINCTROW etc.) is deprecated -
use `prefix_with()` for this.
- put kw arguments to select() in order
- restore docs for _SelectBase, renamed from _SelectBaseMixin
append or similar event on a collection occurs after
the parent object has been dereferenced, which
prevents the parent from being marked as "dirty"
in the session. Will commit as a warning in 0.6.
[ticket:2046]
- this test keeps throwing a TNS error on Oracle on the buildbot only, runs locally,
seems to be related to some scaling/memory type of issue on the bot
call are now wrapped in sqlalchemy.exc.StatementError,
and the text of the SQL statement and repr() of params
is included. This makes it easier to identify statement
executions which fail before the DBAPI becomes
involved. [ticket:2015]
expression.func into the .py module
- added a note about logging only being checked on new connections,
as one user had this issue awhile back, and I suspect it for
a current ML user issue
compilation of expression._BindParamClause including that
the auto-generated binds within the VALUES/SET clause
of an insert()/update() statement will also use the new
compilation rules. [ticket:2042]
but we'd like to. Most DBAPIs don't give us anything we can do with it.
Some research was done on psycopg2 and it still seems like they give us
no adequate method (tried connection.closed, cursor.closed, connection.status).
mxodbc claims their .closed attribute will work (but I am skeptical).
- remove beahvior in pool that auto-invalidated a connection when
the cursor failed to create. That's not the pool's job. we need the conn
for the error logic. Can't get any tests to fail, curious why that
behavior was there, guess we'll find out (or not).
- add support for psycopg2 version detection. even though we have
no use for it yet...
- adjust one of the reconnect tests to work with oracle's
horrendously slow connect speed
the commit in the case of autocommit=True. This allows
autocommit=True to work appropriately with
expire_on_commit=True, and also allows post-flush session
hooks to operate in the same transactional context
as when autocommit=False. [ticket:2041]
multiple entities will indicate all collections
along that path should load, instead of requiring
distinct contains_eager() calls for each endpoint
(which was never correctly documented).
[ticket:2032]
- The "name" field used in orm.aliased() now renders
in the resulting SQL statement.
- add check to fetchmany() for None, don't send argument if not present,
helps DBAPIs which don't accept "None" for default (ie. pysqlite, maybe others)
- add tests to test_execute to provide 100% coverage for the three alternate
result proxy classes
of the auto-generated sequence of a SERIAL column,
which currently only occurs if implicit_returning=False,
now accommodates if the table + column name is greater
than 63 characters using the same logic Postgresql uses.
[ticket:1083]
would have no 'polymorphic_on' column if it didn't also
specify a 'polymorphic_identity', leading to strange
errors upon refresh, wrong class loaded when querying
from that target. [ticket:2038]
FB/Interbase version idents are parsed into a structure
such as (8, 1, 1, 'interbase') or (2, 1, 588, 'firebird')
so they can be distinguished. [ticket:1885]
- fixed relfection of the "autoincrement" flag against a default
placed on the column.
added with propagate=True. needs tests
- oracle/fb test schema uses event w/ propagate=True to apply
Sequence to primary key columns with test_needs_autoincrement.
this does actually test the propagate=True flag a bit since it's
needed in the declarative mixin tests where the 'id' column
is copied.
SchemaEventTarget, which supplies dispatch
- the dispatch now provides before_parent_attach(),
after_parent_attach(), events which generally bound the _set_parent()
event. [ticket:2037]
- the _on_table_attach mechanism now usually uses the
event dispatch
- fixed class-level event dispatch to propagate to all subclasses, not just
immediate subclasses
- fixed class-level event unpickling to handle more involved
inheritance hierarchies, needed by the new schema event dispatch.
- ForeignKeyConstraint doesn't re-call the column attach event
on ForeignKey objects that are already associated with the correct
Column
- we still need that ImportError on mysqldb CLIENT FLAGS to support
mock DBAPIs
a fixed name to be assigned to the alias object.
[ticket:2030]
- changed the kw name 'alias' to 'name' on the alias() standalone
function.
- fixed up some alias/join docstrings
Mike Bayer