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* - remove now-misleading comment that SQLite doesn't support MATCH,Mike Bayer2015-03-141-2/+4
| | | | since they've apparently added something for it
* - try to document how to get columns from constraints.Mike Bayer2015-03-121-0/+8
| | | | | unfortunately Sphinx refuses to work correctly for the columns attribute so we just add a lame message to contains_column().
* - The Postgresql :class:`.postgresql.ENUM` type will emit aMike Bayer2015-03-112-24/+44
| | | | | | | | | | | | DROP TYPE instruction when a plain ``table.drop()`` is called, assuming the object is not associated directly with a :class:`.MetaData` object. In order to accomodate the use case of an enumerated type shared between multiple tables, the type should be associated directly with the :class:`.MetaData` object; in this case the type will only be created at the metadata level, or if created directly. The rules for create/drop of Postgresql enumerated types have been highly reworked in general. fixes #3319
* - copyright 2015Mike Bayer2015-03-1019-19/+19
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* - pick around gaining modest dings in callcounts here and thereMike Bayer2015-03-092-3/+16
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* - random performance whacking vs. 0.9, in particular we have to watchMike Bayer2015-03-081-15/+14
| | | | for the slots-based __getattr__ thing getting hit
* - rename _select_wrapsMike Bayer2015-03-081-13/+33
| | | | | - replace force_result_map with a mini-API for nested result sets, add coverage
* fooMike Bayer2015-03-081-16/+5
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* - the change for #918 was of course not nearly that simple.Mike Bayer2015-03-071-33/+45
| | | | | | | | | | | | | | | | | | The "wrapping" employed by the mssql and oracle dialects using the "iswrapper" argument was not being used intelligently by the compiler, and the result map was being written incorrectly, using *more* columns in the result map than were actually returned by the statement, due to "row number" columns that are inside the subquery. The compiler now writes out result map on the "top level" select in all cases fully, and for the mssql/oracle wrapping case extracts out the "proxied" columns in a second step, which only includes those columns that are proxied outwards to the top level. This change might have implications for 3rd party dialects that might be imitating oracle's approach. They can safely continue to use the "iswrapper" kw which is now ignored, but they may need to also add the _select_wraps argument as well.
* - The SQL compiler now generates the mapping of expected columnspositional_targetingMike Bayer2015-03-071-13/+29
| | | | | | | | | | | | | | | | | such that they are matched to the received result set positionally, rather than by name. Originally, this was seen as a way to handle cases where we had columns returned with difficult-to-predict names, though in modern use that issue has been overcome by anonymous labeling. In this version, the approach basically reduces function call count per-result by a few dozen calls, or more for larger sets of result columns. The approach still degrades into a modern version of the old approach if textual elements modify the result map, or if any discrepancy in size exists between the compiled set of columns versus what was received, so there's no issue for partially or fully textual compilation scenarios where these lists might not line up. fixes #918 - callcounts still need to be adjusted down for this so zoomark tests won't pass at the moment
* - Literal values within a :class:`.DefaultClause`, which is invokedMike Bayer2015-02-091-1/+2
| | | | | | | when using the :paramref:`.Column.server_default` parameter, will now be rendered using the "inline" compiler, so that they are rendered as-is, rather than as bound parameters. fixes #3087
* - The :class:`.CheckConstraint` construct now supports namingMike Bayer2015-01-302-28/+43
| | | | | | | | | | conventions that include the token ``%(column_0_name)s``; the constraint expression is scanned for columns. Additionally, naming conventions for check constraints that don't include the ``%(constraint_name)s`` token will now work for :class:`.SchemaType`- generated constraints, such as those of :class:`.Boolean` and :class:`.Enum`; this stopped working in 0.9.7 due to :ticket:`3067`. fixes #3299
* - Fixed bug in 0.9's foreign key setup system, such thatMike Bayer2015-01-281-9/+17
| | | | | | | | | | | | | | the logic used to link a :class:`.ForeignKey` to its parent could fail when the foreign key used "link_to_name=True" in conjunction with a target :class:`.Table` that would not receive its parent column until later, such as within a reflection + "useexisting" scenario, if the target column in fact had a key value different from its name, as would occur in reflection if column reflect events were used to alter the .key of reflected :class:`.Column` objects so that the link_to_name becomes significant. Also repaired support for column type via FK transmission in a similar way when target columns had a different key and were referenced using link_to_name. fixes #3298
* Merge remote-tracking branch 'origin/pr/150'Mike Bayer2015-01-261-1/+2
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| * Report the type of unexpected expression objectspr/150Ryan P. Kelly2014-11-201-1/+2
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* | - Custom dialects that implement :class:`.GenericTypeCompiler` canMike Bayer2015-01-162-69/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | | now be constructed such that the visit methods receive an indication of the owning expression object, if any. Any visit method that accepts keyword arguments (e.g. ``**kw``) will in most cases receive a keyword argument ``type_expression``, referring to the expression object that the type is contained within. For columns in DDL, the dialect's compiler class may need to alter its ``get_column_specification()`` method to support this as well. The ``UserDefinedType.get_col_spec()`` method will also receive ``type_expression`` if it provides ``**kw`` in its argument signature. fixes #3074
* | - refine the previous commit a bitMike Bayer2015-01-131-20/+27
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* | - The multi-values version of :meth:`.Insert.values` has beenMike Bayer2015-01-132-32/+57
| | | | | | | | | | | | | | | | | | | | | | | | repaired to work more usefully with tables that have Python- side default values and/or functions, as well as server-side defaults. The feature will now work with a dialect that uses "positional" parameters; a Python callable will also be invoked individually for each row just as is the case with an "executemany" style invocation; a server- side default column will no longer implicitly receive the value explicitly specified for the first row, instead refusing to invoke without an explicit value. fixes #3288
* | Add native_enum flag to Enum's repr() resultDimitris Theodorou2015-01-121-0/+1
| | | | | | | | Needed for alembic autogenerate rendering.
* | - add MemoizedSlots, a generalized solution to using __getattr__Mike Bayer2015-01-052-14/+25
| | | | | | | | | | for memoization on a class that uses slots. - apply many more __slots__. mem use for nova now at 46% savings
* | - clean up default comparator which doesn't need to be a class,Mike Bayer2015-01-042-260/+263
| | | | | | | | get PG stuff working
* | - strategies + declarativeMike Bayer2015-01-041-0/+1
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* | - start trying to move things into __slots__. This seems to reduce theslotsMike Bayer2015-01-044-59/+54
| | | | | | | | | | size of the many per-column objects we're hitting, but somehow the overall memory is hardly being reduced at all in initial testing
* | - test failures:Mike Bayer2015-01-021-1/+1
| | | | | | | | | | - test_schema_2 is only on PG and doesn't need a drop all, omit this for now - py3k has exception.args[0], not message
* | - restate sort_tables in terms of a more fine grainedMike Bayer2015-01-013-59/+296
| | | | | | | | | | | | | | | | | | | | | | | | | | sort_tables_and_constraints function. - The DDL generation system of :meth:`.MetaData.create_all` and :meth:`.Metadata.drop_all` has been enhanced to in most cases automatically handle the case of mutually dependent foreign key constraints; the need for the :paramref:`.ForeignKeyConstraint.use_alter` flag is greatly reduced. The system also works for constraints which aren't given a name up front; only in the case of DROP is a name required for at least one of the constraints involved in the cycle. fixes #3282
* | - Added a new accessor :attr:`.Table.foreign_key_constraints`Mike Bayer2015-01-011-0/+27
| | | | | | | | | | to complement the :attr:`.Table.foreign_keys` collection, as well as :attr:`.ForeignKeyConstraint.referred_table`.
* | correctionsMike Bayer2014-12-272-2/+2
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* | - correctionsMike Bayer2014-12-273-2/+10
| | | | | | | | - attempt to add a script to semi-automate the fixing of links
* | - typo fixes #3269Mike Bayer2014-12-271-1/+1
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* | Maul the evaulate & friends typoPriit Laes2014-12-193-3/+3
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* | - Fixed bug where using a :class:`.TypeDecorator` that implementedMike Bayer2014-12-191-3/+7
| | | | | | | | | | | | | | a type that was also a :class:`.TypeDecorator` would fail with Python's "Cannot create a consistent method resolution order (MRO)" error, when any kind of SQL comparison expression were used against an object using this type.
* | - SQL Server 2012 now recommends VARCHAR(max), NVARCHAR(max),Mike Bayer2014-12-061-1/+1
| | | | | | | | | | | | | | VARBINARY(max) for large text/binary types. The MSSQL dialect will now respect this based on version detection, as well as the new ``deprecate_large_types`` flag. fixes #3039
* | - Added support for CTEs under Oracle. This includes some tweaksMike Bayer2014-12-042-45/+103
| | | | | | | | | | | | | | to the aliasing syntax, as well as a new CTE feature :meth:`.CTE.suffix_with`, which is useful for adding in special Oracle-specific directives to the CTE. fixes #3220
* | - The :meth:`.Operators.match` operator is now handled such that theMike Bayer2014-12-046-9/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | return type is not strictly assumed to be boolean; it now returns a :class:`.Boolean` subclass called :class:`.MatchType`. The type will still produce boolean behavior when used in Python expressions, however the dialect can override its behavior at result time. In the case of MySQL, while the MATCH operator is typically used in a boolean context within an expression, if one actually queries for the value of a match expression, a floating point value is returned; this value is not compatible with SQLAlchemy's C-based boolean processor, so MySQL's result-set behavior now follows that of the :class:`.Float` type. A new operator object ``notmatch_op`` is also added to better allow dialects to define the negation of a match operation. fixes #3263
* | - Fixed bug in :meth:`.Table.tometadata` method where theMike Bayer2014-11-292-11/+15
| | | | | | | | | | | | | | | | :class:`.CheckConstraint` associated with a :class:`.Boolean` or :class:`.Enum` type object would be doubled in the target table. The copy process now tracks the production of this constraint object as local to a type object. fixes #3260
* | - use self.parent, not table here as there's an attributeerrorMike Bayer2014-11-251-1/+1
| | | | | | | | trap for self.table that behaves differently in py3k
* | - The behavioral contract of the :attr:`.ForeignKeyConstraint.columns`Mike Bayer2014-11-252-43/+63
|/ | | | | | | | collection has been made consistent; this attribute is now a :class:`.ColumnCollection` like that of all other constraints and is initialized at the point when the constraint is associated with a :class:`.Table`. fixes #3243
* - Fixed issue where the columns from a SELECT embedded in anMike Bayer2014-11-111-0/+8
| | | | | | | | | INSERT, either through the values clause or as a "from select", would pollute the column types used in the result set produced by the RETURNING clause when columns from both statements shared the same name, leading to potential errors or mis-adaptation when retrieving the returning rows. fixes #3248
* - The :attr:`.Column.key` attribute is now used as the source ofMike Bayer2014-11-101-2/+2
| | | | | | | | | | | anonymous bound parameter names within expressions, to match the existing use of this value as the key when rendered in an INSERT or UPDATE statement. This allows :attr:`.Column.key` to be used as a "substitute" string to work around a difficult column name that doesn't translate well into a bound parameter name. Note that the paramstyle is configurable on :func:`.create_engine` in any case, and most DBAPIs today support a named and positional style. fixes #3245
* - Fixed bug regarding expression mutations which could expressMike Bayer2014-11-051-0/+7
| | | | | | | | itself as a "Could not locate column" error when using :class:`.Query` to select from multiple, anonymous column entities when querying against SQLite, as a side effect of the "join rewriting" feature used by the SQLite dialect. fixes #3241
* - ensure kwargs are passed for limit clause on a compound select as well,Mike Bayer2014-10-311-1/+1
| | | | further fixes for #3034
* - changelog for pullreq github:139Mike Bayer2014-10-211-4/+22
| | | | | - add support for self-referential foreign keys to move over as well when the table name is changed.
* Merge remote-tracking branch 'origin/pr/139' into pr139Mike Bayer2014-10-211-4/+7
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| * allow Table.tometadata changing the table namendparker2014-09-231-4/+7
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* | - Reversing a change that was made in 0.9, the "singleton" natureMike Bayer2014-10-192-17/+13
| | | | | | | | | | | | | | | | | | of the "constants" :func:`.null`, :func:`.true`, and :func:`.false` has been reverted. These functions returning a "singleton" object had the effect that different instances would be treated as the same regardless of lexical use, which in particular would impact the rendering of the columns clause of a SELECT statement. fixes #3170
* | Fixed typopr/142mozillazg2014-10-151-2/+2
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* | Merge remote-tracking branch 'origin/pr/140' into pr140Mike Bayer2014-10-112-3/+3
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| * | cleanup exception handling - use new exception hierarchy (since python 2.5)pr/140ndparker2014-10-021-3/+1
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| * | improve exception vs. exit handlingndparker2014-09-232-2/+4
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* | - :meth:`.Insert.from_select` now includes Python and SQL-expressionMike Bayer2014-10-103-29/+96
| | | | | | | | | | | | | | defaults if otherwise unspecified; the limitation where non- server column defaults aren't included in an INSERT FROM SELECT is now lifted and these expressions are rendered as constants into the SELECT statement.
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