0.8.0b1
=======
+Changes noted below are specific to version 0.8.
+For changes that are in both 0.7 and 0.8, see below
+underneath "0.7.xx".
+
- general
- SQLAlchemy 0.8 now targets Python 2.5 and
above. Python 2.4 is no longer supported.
Both features should be avoided, however.
[ticket:2372]
- - [bug] Fixed bug whereby subqueryload() from
- a polymorphic mapping to a target would incur
- a new invocation of the query for each
- distinct class encountered in the polymorphic
- result. [ticket:2480]. Also in 0.7.8.
-
- - [bug] Fixed issue in unit of work
- 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]. Also in 0.7.7
-
- - [bug] Fixed bug in relationship comparisons
- whereby calling unimplemented methods like
- SomeClass.somerelationship.like() would
- produce a recursion overflow, instead
- of NotImplementedError. Also in 0.7.7.
-
- [bug] The "passive" flag on Session.is_modified()
no longer has any effect. is_modified() in
all cases looks only at local in-memory
would fail to function subsequent to this
warning in any case. [ticket:2405]
- - [bug] Fixed bug in declarative
- whereby the precedence of columns
- in a joined-table, composite
- column (typically for id) would fail to
- be correct if the columns contained
- names distinct from their attribute
- names. This would cause things like
- primaryjoin conditions made against the
- entity attributes to be incorrect. Related
- to [ticket:1892] as this was supposed
- to be part of that, this is [ticket:2491].
- Also in 0.7.8.
-
- - [feature] The 'objects' argument to
- flush() is no longer deprecated, as some
- valid use cases have been identified.
- Also in 0.7.8.
-
- - [bug] Fixed identity_key() function which
- was not accepting a scalar argument
- for the identity. [ticket:2508]. Also
- in 0.7.8.
-
- [feature] Query now "auto correlates" by
default in the same way as select() does.
Previously, a Query used as a subquery
outside. As always, correlate(None)
disables correlation. [ticket:2179]
- - [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]
- also in 0.7.7.
-
- - [bug] Fixed bug in 0.7.6 introduced by
- [ticket:2409] whereby column_mapped_collection
- used against columns that were mapped as
- joins or other indirect selectables
- would fail to function.
- also in 0.7.7.
-
- - [feature] Added new flag to @validates
- 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.
- also in 0.7.7.
-
- [feature] The after_attach event is now
emitted after the object is established
in Session.new or Session.identity_map
need autoflush w pre-attached object.
[ticket:2464]
- - [bug] Fixed bug whereby polymorphic_on
- column that's not otherwise mapped on the
- class would be incorrectly included
- in a merge() operation, raising an error.
- [ticket:2449]
- also in 0.7.7.
-
- - [bug] Fixed bug in expression annotation
- mechanics which could lead to incorrect
- rendering of SELECT statements with aliases
- and joins, particularly when using
- column_property(). [ticket:2453]
- also in 0.7.7.
-
- - [bug] Fixed bug which would prevent
- OrderingList from being pickleable
- [ticket:2454]. Courtesy Jeff Dairiki
- also in 0.7.7.
-
- - [bug] Fixed bug whereby populate_existing
- option would not propagate to subquery
- eager loaders. [ticket:2497]. Also
- in 0.7.8.
-
- engine
- - [feature] Dramatic improvement in memory
- usage of the event system; instance-level
- collections are no longer created for a
- particular type of event until
- instance-level listeners are established
- for that event. [ticket:2516] Also in 0.7.9.
-
- - [bug] Fixed memory leak in C version of
- result proxy whereby DBAPIs which don't deliver
- pure Python tuples for result rows would
- fail to decrement refcounts correctly.
- The most prominently affected DBAPI
- is pyodbc. Also in 0.7.8. [ticket:2489]
-
- - [bug] Fixed bug affecting Py3K whereby
- string positional parameters passed to
- engine/connection execute() would fail to be
- interpreted correctly, due to __iter__
- being present on Py3K string.
- [ticket:2503]. Also in 0.7.8.
-
- [feature] Added a new system
for registration of new dialects in-process
without using an entrypoint. See the
column object itself, consistent with the behavior
of label(column, None). [ticket:2168]
- - [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.
- also in 0.7.7.
-
- - [feature] Added new connection event
- dbapi_error(). Is called for all DBAPI-level
- errors passing the original DBAPI exception
- before SQLAlchemy modifies the state
- of the cursor.
- also in 0.7.7.
-
- - [bug] If conn.begin() fails when calling
- "with engine.begin()", the newly acquired
- Connection is closed explicitly before
- propagating the exception onward normally.
- also in 0.7.7.
-
- - [bug] Added BIGINT, BINARY, VARBINARY to
- types.__all__, sqlalchemy namespaces,
- plus tests to make sure new types
- remain importable. [ticket:2474]
- also in 0.7.7, [ticket:2499] also
- in 0.7.8.
-
- - [bug] Repaired common table expression
- rendering to function correctly when the
- SELECT statement contains UNION or other
- compound expressions, courtesy btbuilder.
- [ticket:2490] Also in 0.7.8.
-
- - [bug] Fixed bug whereby append_column()
- wouldn't function correctly on a cloned
- select() construct, courtesy
- Gunnlaugur Þór Briem. [ticket:2482]
- Also in 0.7.8.
-
- sqlite
- [feature] the SQLite date and time types
have been overhauled to support a more open
Nathan Wright for the work and tests on
this. [ticket:2363]
- - [feature] Added SQLite execution option
- "sqlite_raw_colnames=True", will bypass
- attempts to remove "." from column names
- returned by SQLite cursor.description.
- [ticket:2475] Also in 0.7.7.
-
- mssql
- [bug] removed legacy behavior whereby
a column comparison to a scalar SELECT via
needs to be modified to use column.in_(select)
explicitly. [ticket:2277]
+- postgresql
+
+ - [feature] postgresql.ARRAY features an optional
+ "dimension" argument, will assign a specific
+ number of dimensions to the array which will
+ render in DDL as ARRAY[][]..., also improves
+ performance of bind/result processing.
+ [ticket:2441]
+
+- mysql
+ - [bug] Dialect no longer emits expensive server
+ collations query, as well as server casing,
+ on first connect. These functions are still
+ available as semi-private. [ticket:2404]
+
+- oracle
+ - [bug] Quoting information is now passed along
+ from a Column with quote=True when generating
+ a same-named bound parameter to the bindparam()
+ object, as is the case in generated INSERT and UPDATE
+ statements, so that unknown reserved names can
+ be fully supported. [ticket:2437]
+
+- extensions
+ - [removed] The SQLSoup extension is removed from
+ SQLAlchemy, and is now an external project.
+ See http://pypi.python.org/pypi/sqlsoup .
+ [ticket:2262]
+
+0.7.7 - 0.7.xx
+==============
+0.8 development begins during 0.7.7 development.
+All relevant bug fixes
+and features listed below from version 0.7.7 on
+are also present in 0.8.
+
+0.7.9
+=====
+- engine
+ - [feature] Dramatic improvement in memory
+ usage of the event system; instance-level
+ collections are no longer created for a
+ particular type of event until
+ instance-level listeners are established
+ for that event. [ticket:2516]
+
+0.7.8
+=====
+- orm
+ - [bug] Fixed bug whereby subqueryload() from
+ a polymorphic mapping to a target would incur
+ a new invocation of the query for each
+ distinct class encountered in the polymorphic
+ result. [ticket:2480]
+
+ - [bug] Fixed bug in declarative
+ whereby the precedence of columns
+ in a joined-table, composite
+ column (typically for id) would fail to
+ be correct if the columns contained
+ names distinct from their attribute
+ names. This would cause things like
+ primaryjoin conditions made against the
+ entity attributes to be incorrect. Related
+ to [ticket:1892] as this was supposed
+ to be part of that, this is [ticket:2491].
+
+ - [feature] The 'objects' argument to
+ flush() is no longer deprecated, as some
+ valid use cases have been identified.
+
+ - [bug] Fixed identity_key() function which
+ was not accepting a scalar argument
+ for the identity. [ticket:2508].
+
+ - [bug] Fixed bug whereby populate_existing
+ option would not propagate to subquery
+ eager loaders. [ticket:2497].
+
+- sql
+ - [bug] added BIGINT to types.__all__,
+ BIGINT, BINARY, VARBINARY to sqlalchemy
+ module namespace, plus test to ensure
+ this breakage doesn't occur again.
+ [ticket:2499]
+
+ - [bug] Repaired common table expression
+ rendering to function correctly when the
+ SELECT statement contains UNION or other
+ compound expressions, courtesy btbuilder.
+ [ticket:2490]
+
+ - [bug] Fixed bug whereby append_column()
+ wouldn't function correctly on a cloned
+ select() construct, courtesy
+ Gunnlaugur Þór Briem. [ticket:2482]
+
+- engine
+ - [bug] Fixed memory leak in C version of
+ result proxy whereby DBAPIs which don't deliver
+ pure Python tuples for result rows would
+ fail to decrement refcounts correctly.
+ The most prominently affected DBAPI
+ is pyodbc. [ticket:2489]
+
+ - [bug] Fixed bug affecting Py3K whereby
+ string positional parameters passed to
+ engine/connection execute() would fail to be
+ interpreted correctly, due to __iter__
+ being present on Py3K string.
+ [ticket:2503].
+
+- postgresql
+ - [bug] removed unnecessary table clause when
+ reflecting enums, [ticket:2510]. Courtesy
+ Gunnlaugur Þór Briem.
+
+- oracle
+ - [bug] Added ROWID to oracle.*, [ticket:2483]
+
+- mysql
+ - [feature] Added a new dialect for Google App
+ Engine. Courtesy Richie Foreman. [ticket:2484]
+
+
+0.7.7
+=====
+- orm
+ - [bug] Fixed issue in unit of work
+ 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].
+
+ - [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]
+
+ - [bug] Fixed bug in 0.7.6 introduced by
+ [ticket:2409] whereby column_mapped_collection
+ used against columns that were mapped as
+ joins or other indirect selectables
+ would fail to function.
+
+ - [feature] Added new flag to @validates
+ 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.
+
+ - [bug] Fixed bug whereby polymorphic_on
+ column that's not otherwise mapped on the
+ class would be incorrectly included
+ in a merge() operation, raising an error.
+ [ticket:2449]
+
+ - [bug] Fixed bug in expression annotation
+ mechanics which could lead to incorrect
+ rendering of SELECT statements with aliases
+ and joins, particularly when using
+ column_property(). [ticket:2453]
+
+ - [bug] Fixed bug which would prevent
+ OrderingList from being pickleable
+ [ticket:2454]. Courtesy Jeff Dairiki
+
+ - [bug] Fixed bug in relationship comparisons
+ whereby calling unimplemented methods like
+ SomeClass.somerelationship.like() would
+ produce a recursion overflow, instead
+ of NotImplementedError.
+
+- sql
+ - [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.
+
+ - [feature] Added new connection event
+ dbapi_error(). Is called for all DBAPI-level
+ errors passing the original DBAPI exception
+ before SQLAlchemy modifies the state
+ of the cursor.
+
+ - [bug] If conn.begin() fails when calling
+ "with engine.begin()", the newly acquired
+ Connection is closed explicitly before
+ propagating the exception onward normally.
+
+ - [bug] Add BINARY, VARBINARY to types.__all__,
+ [ticket:2474]
+
+- 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.
- also in 0.7.7.
- [bug] Repaired the use_scope_identity
create_engine() flag when using the pyodbc
INSERT to get at the last inserted ID,
for those tables which have "implicit_returning"
set to False.
- also in 0.7.7.
- [bug] UPDATE..FROM syntax with SQL Server
requires that the updated table be present
in the FROM, when FROM is present
in the first place. Courtesy sayap.
[ticket:2468]
- also in 0.7.7.
- postgresql
- [feature] Added new for_update/with_lockmode()
with_lockmode("read_nowait").
These emit "FOR SHARE" and "FOR SHARE NOWAIT",
respectively. Courtesy Diana Clarke
- [ticket:2445] Also in 0.7.7.
-
- - [feature] postgresql.ARRAY features an optional
- "dimension" argument, will assign a specific
- number of dimensions to the array which will
- render in DDL as ARRAY[][]..., also improves
- performance of bind/result processing.
- [ticket:2441]
+ [ticket:2445]
- [bug] removed unnecessary table clause
when reflecting domains, [ticket:2473]
- also in 0.7.7
-
- - [bug] removed unnecessary table clause when
- reflecting enums, [ticket:2510]. Courtesy
- Gunnlaugur Þór Briem. Also in 0.7.8.
- mysql
- [bug] Fixed bug whereby column name inside
column with InnoDB would double quote a
name that's a reserved word. Courtesy Jeff
Dairiki. [ticket:2460]
- also in 0.7.7.
- [bug] Fixed bug whereby get_view_names() for
"information_schema" schema would fail
to retrieve views marked as "SYSTEM VIEW".
courtesy Matthew Turland.
- also in 0.7.7.
- [bug] Fixed bug whereby if cast() is used
on a SQL expression whose type is not supported
if the casted expression required that it be
grouped; grouping is now applied to those
expressions. [ticket:2467]
- also in 0.7.7.
-
- - [bug] Dialect no longer emits expensive server
- collations query, as well as server casing,
- on first connect. These functions are still
- available as semi-private. [ticket:2404]
-
- - [feature] Added a new dialect for Google App
- Engine. Courtesy Richie Foreman.
- Also in 0.7.8. [ticket:2484]
-
-- oracle
- - [bug] Quoting information is now passed along
- from a Column with quote=True when generating
- a same-named bound parameter to the bindparam()
- object, as is the case in generated INSERT and UPDATE
- statements, so that unknown reserved names can
- be fully supported. [ticket:2437]
- - [bug] Added ROWID to oracle.*, [ticket:2483]
- Also in 0.7.8.
-
-- extensions
- - [removed] The SQLSoup extension is removed from
- SQLAlchemy, and is now an external project.
- See http://pypi.python.org/pypi/sqlsoup .
- [ticket:2262]
-
-0.7.7 - 0.7.xx
-==============
+- sqlite
-Changes which apply to 0.7.7 and subsequent versions of 0.7
-are listed in the CHANGES file within the 0.7 branch. All
-those changes which are also in the 0.8 series (which is typically
-all of them) are listed inline within the 0.8 changes above,
-those which apply to an 0.7 release are noted.
+ - [feature] Added SQLite execution option
+ "sqlite_raw_colnames=True", will bypass
+ attempts to remove "." from column names
+ returned by SQLite cursor.description.
+ [ticket:2475]
0.7.6
=====
projects / thirdparty / sqlalchemy / sqlalchemy.git / commitdiff
