Mike Bayer [Thu, 31 Oct 2013 19:29:45 +0000 (15:29 -0400)]
- add a section re: using column_reflect for mapping, link to it from the "naming columns distinctly" and "column_prefix" sections since this is often what ppl are looking for. [ticket:2856] is related.
Mike Bayer [Wed, 30 Oct 2013 14:34:31 +0000 (10:34 -0400)]
- Fixed a regression introduced by :ticket:`2818` where the EXISTS
query being generated would produce a "columns being replaced"
warning for a statement with two same-named columns,
as the internal SELECT wouldn't have use_labels set.
Mike Bayer [Sun, 27 Oct 2013 22:14:44 +0000 (18:14 -0400)]
- Fixed bug where index reflection would mis-interpret indkey values
when using the pypostgresql adapter, which returns these values
as lists vs. psycopg2's return type of string.
[ticket:2855]
Mike Bayer [Fri, 25 Oct 2013 23:11:53 +0000 (19:11 -0400)]
- Fixed bug where Oracle table reflection using synonyms would fail
if the synonym and the table were in different remote schemas.
Patch to fix courtesy Kyle Derr. [ticket:2853]
Mike Bayer [Sun, 20 Oct 2013 20:25:46 +0000 (16:25 -0400)]
- add a type_coerce() step within Enum, Boolean to the CHECK constraint,
so that the custom type isn't exposed to an operation that is against the
"impl" type's constraint, [ticket:2842]
- this change showed up as some recursion overflow in pickling with labels,
add a __reduce__() there....pickling of expressions is less and less something
that's very viable...
Mike Bayer [Fri, 18 Oct 2013 23:00:05 +0000 (19:00 -0400)]
- Removed a 128-character truncation from the reflection of the
server default for a column; this code was original from
PG system views which truncated the string for readability.
[ticket:2844]
Mike Bayer [Fri, 18 Oct 2013 19:00:42 +0000 (15:00 -0400)]
- The change in :ticket:`2721`, which is that the ``deferrable`` keyword
of :class:`.ForeignKeyConstraint` is silently ignored on the MySQL
backend, will be reverted as of 0.9; this keyword will now render again, raising
errors on MySQL as it is not understood - the same behavior will also
apply to the ``initially`` keyword. In 0.8, the keywords will remain
ignored but a warning is emitted. Additionally, the ``match`` keyword
now raises a :class:`.CompileError` on 0.9 and emits a warning on 0.8;
this keyword is not only silently ignored by MySQL but also breaks
the ON UPDATE/ON DELETE options.
To use a :class:`.ForeignKeyConstraint`
that does not render or renders differently on MySQL, use a custom
compilation option. An example of this usage has been added to the
documentation, see :ref:`mysql_foreign_keys`.
[ticket:2721] [ticket:2839]
Mike Bayer [Mon, 14 Oct 2013 18:53:28 +0000 (14:53 -0400)]
The ``.unique`` flag on :class:`.Index` could be produced as ``None``
if it was generated from a :class:`.Column` that didn't specify ``unique``
(where it defaults to ``None``). The flag will now always be ``True`` or
``False``. [ticket:2825]
Mike Bayer [Sun, 13 Oct 2013 20:54:21 +0000 (16:54 -0400)]
- Added new option to :func:`.relationship` ``distinct_target_key``.
This enables the subquery eager loader strategy to apply a DISTINCT
to the innermost SELECT subquery, to assist in the case where
duplicate rows are generated by the innermost query which corresponds
to this relationship (there's not yet a general solution to the issue
of dupe rows within subquery eager loading, however, when joins outside
of the innermost subquery produce dupes). When the flag
is set to ``True``, the DISTINCT is rendered unconditionally, and when
it is set to ``None``, DISTINCT is rendered if the innermost relationship
targets columns that do not comprise a full primary key.
The option defaults to False in 0.8 (e.g. off by default in all cases),
None in 0.9 (e.g. automatic by default). Thanks to Alexander Koval
for help with this. [ticket:2836]
Mike Bayer [Sun, 13 Oct 2013 18:09:35 +0000 (14:09 -0400)]
MySQL-connector dialect now allows options in the create_engine
query string to override those defaults set up in the connect,
including "buffered" and "raise_on_warnings".
[ticket:2515]
Mike Bayer [Sun, 13 Oct 2013 00:04:55 +0000 (20:04 -0400)]
- Fixed bug in default compiler plus those of postgresql, mysql, and
mssql to ensure that any literal SQL expression values are
rendered directly as literals, instead of as bound parameters,
within a CREATE INDEX statement. [ticket:2742]
- don't need expression_as_ddl(); literal_binds and include_table
take care of this functionality.
Mike Bayer [Wed, 9 Oct 2013 00:06:58 +0000 (20:06 -0400)]
A :func:`.select` that is made to refer to itself in its FROM clause,
typically via in-place mutation, will raise an informative error
message rather than causing a recursion overflow.
[ticket:2815]
Mike Bayer [Tue, 8 Oct 2013 23:47:13 +0000 (19:47 -0400)]
Fixed bug where using an annotation such as :func:`.remote` or
:func:`.foreign` on a :class:`.Column` before association with a parent
:class:`.Table` could produce issues related to the parent table not
rendering within joins, due to the inherent copy operation performed
by an annotation. [ticket:2813]
Mike Bayer [Wed, 28 Aug 2013 21:25:44 +0000 (17:25 -0400)]
Fixed bug where using the ``column_reflect`` event to change the ``.key``
of the incoming :class:`.Column` would prevent primary key constraints,
indexes, and foreign key constraints from being correctly reflected.
Also in 0.8.3. [ticket:2811]
Mike Bayer [Sat, 24 Aug 2013 17:55:14 +0000 (13:55 -0400)]
- The :class:`.CreateColumn` construct can be appled to a custom
compilation rule which allows skipping of columns, by producing
a rule that returns ``None``. Also in 0.8.3.
Mike Bayer [Sat, 24 Aug 2013 15:30:57 +0000 (11:30 -0400)]
- this comment is wrong, the method here returns all mapper entities
- use a simple isinstance() check instead of looking for presence of
"primary_entity" flag, that's a little unclear
Mike Bayer [Sun, 18 Aug 2013 22:01:27 +0000 (18:01 -0400)]
- reorganize docs so expression, schema are broken out into subfiles, they're too big
- fix the targeting of module names moved around by using custom handlers for "Bases", etc.
Mike Bayer [Tue, 20 Aug 2013 17:27:27 +0000 (13:27 -0400)]
Fixed bug where list instrumentation would fail to represent a
setslice of ``[0:0]`` correctly, which in particular could occur
when using ``insert(0, item)`` with the association proxy. Due
to some quirk in Python collections, the issue was much more likely
with Python 3 rather than 2. Also in 0.8.3, 0.7.11.
[ticket:2807]
Mike Bayer [Sun, 18 Aug 2013 19:57:06 +0000 (15:57 -0400)]
Backported a change from 0.9 whereby the iteration of a hierarchy
of mappers used in polymorphic inheritance loads is sorted on class name,
which allows the SELECT statements generated for polymorphic queries
to have deterministic rendering, which in turn helps with caching
schemes that cache on the SQL string itself.
[ticket:2779]
Mike Bayer [Sun, 18 Aug 2013 19:34:23 +0000 (15:34 -0400)]
Fixed a potential issue in an ordered sequence implementation used
by the ORM to iterate mapper hierarchies; under the Jython interpreter
this implementation wasn't ordered, even though cPython and Pypy
maintained ordering. Also in 0.8.3.
[ticket:2794]
Mike Bayer [Sun, 18 Aug 2013 18:46:04 +0000 (14:46 -0400)]
Fixed regression dating back to 0.7.9 whereby the name of a CTE might
not be properly quoted if it was referred to in multiple FROM clauses.
Also in 0.8.3, 0.7.11. [ticket:2801]
Mike Bayer [Wed, 7 Aug 2013 18:28:45 +0000 (13:28 -0500)]
- The :meth:`.Operators.notin_` operator added in 0.8 now properly
produces the negation of the expression "IN" returns
when used against an empty collection. Also in 0.8.3.
Mike Bayer [Wed, 31 Jul 2013 22:42:58 +0000 (18:42 -0400)]
- Fixed bug in common table expression system where if the CTE were
used only as an ``alias()`` construct, it would not render using the
WITH keyword. Also in 0.7.11.
[ticket:2783]