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* Add support for CACHE and ORDER to sequencesDavid Moore2017-07-051-0/+12
| | | | | | | | | | | Added new keywords :paramref:`.Sequence.cache` and :paramref:`.Sequence.order` to :class:`.Sequence`, to allow rendering of the CACHE parameter understood by Oracle and PostgreSQL, and the ORDER parameter understood by Oracle. Pull request courtesy David Moore. Change-Id: I082c3f8ef56ef89dbaad5da9d5695be5313b0614 Pull-request: https://bitbucket.org/zzzeek/sqlalchemy/pull-requests/96
* Return given type when it matches the adaptationMike Bayer2017-06-261-2/+24
| | | | | | | | | | | | | The rules for type coercion between :class:`.Numeric`, :class:`.Integer`, and date-related types now include additional logic that will attempt to preserve the settings of the incoming type on the "resolved" type. Currently the target for this is the ``asdecimal`` flag, so that a math operation between :class:`.Numeric` or :class:`.Float` and :class:`.Integer` will preserve the "asdecimal" flag as well as if the type should be the :class:`.Float` subclass. Change-Id: Idfaba17220d6db21ca1ca4dcb4c19834cd397817 Fixes: #4018
* Coerce float Python type to Float; ensure Python float coming backMike Bayer2017-06-261-0/+17
| | | | | | | | | | | Added some extra strictness to the handling of Python "float" values passed to SQL statements. A "float" value will be associated with the :class:`.Float` datatype and not the Decimal-coercing :class:`.Numeric` datatype as was the case before, eliminating a confusing warning emitted on SQLite as well as unecessary coercion to Decimal. Change-Id: I1bb1810ff1d198c0d929ccba5656e55401d74119 Fixes: #4017
* Repair WithinGroup.get_children()Mike Bayer2017-06-161-0/+10
| | | | | | | | Fixed AttributeError which would occur in :class:`.WithinGroup` construct during an iteration of the structure. Change-Id: I563882d93c8c32292463a605b636aa60c77e9406 Fixes: #4012
* Merge "Raise if ForeignKeyConstraint created with different numbers of local ↵mike bayer2017-05-251-0/+23
|\ | | | | | | and remote columns."
| * Raise if ForeignKeyConstraint created with different numbers ofMike Bayer2017-05-251-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | local and remote columns. An :class:`.ArgumentError` is now raised if a :class:`.ForeignKeyConstraint` object is created with a mismatched number of "local" and "remote" columns, which otherwise causes the internal state of the constraint to be incorrect. Note that this also impacts the condition where a dialect's reflection process produces a mismatched set of columns for a foreign key constraint. Downstream DB2 dialect has been reported as potentially causing this scenario. Change-Id: Id51c34a6c43749bb582639f9c1dc28723482f0e5 Fixes: #3949 References: #3998
* | Flatten operator precedence for comparison operatorsMichael Birtwell2017-05-251-0/+7
|/ | | | | | | | | | | | | | | The operator precedence for all comparison operators such as LIKE, IS, IN, MATCH, equals, greater than, less than, etc. has all been merged into one level, so that expressions which make use of these against each other will produce parentheses between them. This suits the stated operator precedence of databases like Oracle, MySQL and others which place all of these operators as equal precedence, as well as Postgresql as of 9.5 which has also flattened its operator precendence. Co-authored-by: Mike Bayer <mike_mp@zzzcomputing.com> Fixes: #3999 Change-Id: I3f3d5124a64af0d376361cdf15a97e2e703be56f Pull-request: https://github.com/zzzeek/sqlalchemy/pull/367
* Enforce boolean result type for all eq_, is_, isnot, comparisonMike Bayer2017-04-271-0/+10
| | | | | | | | | | | | Repaired issue where the type of an expression that used :meth:`.ColumnOperators.is_` or similar would not be a "boolean" type, instead the type would be "nulltype", as well as when using custom comparison operators against an untyped expression. This typing can impact how the expression behaves in larger contexts as well as in result-row-handling. Change-Id: Ib810ff686de500d8db26ae35a51005fab29603b6 Fixes: #3873
* Add _negate() to Label to negate inner elementMike Bayer2017-04-211-1/+15
| | | | | | | | | Fixed the negation of a :class:`.Label` construct so that the inner element is negated correctly, when the :func:`.not_` modifier is applied to the labeled expression. Change-Id: Ia99917b2959bdfbff28689c962b4203911c57b85 Fixes: #3969
* Add new "expanding" feature to bindparam()Mike Bayer2017-04-073-5/+87
| | | | | | | | | | | | | | | | Added a new kind of :func:`.bindparam` called "expanding". This is for use in ``IN`` expressions where the list of elements is rendered into individual bound parameters at statement execution time, rather than at statement compilation time. This allows both a single bound parameter name to be linked to an IN expression of multiple elements, as well as allows query caching to be used with IN expressions. The new feature allows the related features of "select in" loading and "polymorphic in" loading to make use of the baked query extension to reduce call overhead. This feature should be considered to be **experimental** for 1.2. Fixes: #3953 Change-Id: Ie708414a3ab9c0af29998a2c7f239ff7633b1f6e
* Double percent signs based on paramstyle, not dialectMike Bayer2017-04-053-30/+43
| | | | | | | | | | | | This patch moves the "doubling" of percent signs into the base compiler and makes it completely a product of whether or not the paramstyle is format/pyformat or not. Without this paramstyle, percent signs are not doubled across text(), literal_column(), and column(). Change-Id: Ie2f278ab1dbb94b5078f85c0096d74dbfa049197 Fixes: #3740
* Apply SQL compilation to sqltext for column-level CHECK constraintMike Bayer2017-04-041-0/+13
| | | | | | | | | | | | | Fixed bug where a column-level :class:`.CheckConstraint` would fail to compile the SQL expression using the underlying dialect compiler as well as apply proper flags to generate literal values as inline, in the case that the sqltext is a Core expression and not just a plain string. This was long-ago fixed for table-level check constraints in 0.9 as part of :ticket:`2742`, which more commonly feature Core SQL expressions as opposed to plain string expressions. Change-Id: I1301ba4b40063e91bc47726aecc5f4990ffcaeda Fixes: #3957
* ResultProxy won't autoclose connection until state flag is setMike Bayer2017-04-031-0/+44
| | | | | | | | | | | | | | Changed the mechanics of :class:`.ResultProxy` to unconditionally delay the "autoclose" step until the :class:`.Connection` is done with the object; in the case where Postgresql ON CONFLICT with RETURNING returns no rows, autoclose was occurring in this previously non-existent use case, causing the usual autocommit behavior that occurs unconditionally upon INSERT/UPDATE/DELETE to fail. Change-Id: I235a25daf4381b31f523331f810ea04450349722 Fixes: #3955 (cherry picked from commit 8ee363e4917b0dcd64a83b6d26e465c9e61e0ea5) (cherry picked from commit f52fb5282a046d26b6ee2778e03b995eb117c2ee)
* Merge "Use consistent method signature for Alias.self_group()"mike bayer2017-04-031-0/+14
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| * Use consistent method signature for Alias.self_group()Mike Bayer2017-04-031-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | Fixed bug where the use of an :class:`.Alias` object in a column context would raise an argument error when it tried to group itself into a parenthesized expression. Using :class:`.Alias` in this way is not yet a fully supported API, however it applies to some end-user recipes and may have a more prominent role in support of some future Postgresql features. Change-Id: I81717e30416e0350f08d1e022c3d84656e0a9735 Fixes: #3939
* | Return self when Variant.coerce_compared_value would return implMike Bayer2017-04-011-2/+72
|/ | | | | | | | | | | | | Fixed regression released in 1.1.5 due to :ticket:`3859` where adjustments to the "right-hand-side" evaluation of an expression based on :class:`.Variant` to honor the underlying type's "right-hand-side" rules caused the :class:`.Variant` type to be inappropriately lost, in those cases when we *do* want the left-hand side type to be transferred directly to the right hand side so that bind-level rules can be applied to the expression's argument. Change-Id: Ia54dbbb19398549d654b74668753c4152599d900 Fixes: #3952
* Apply type processing to untyped preexec default clauseMike Bayer2017-03-301-8/+27
| | | | | | | | | | | | | | | | Fixed bug where a SQL-oriented Python-side column default could fail to be executed properly upon INSERT in the "pre-execute" codepath, if the SQL itself were an untyped expression, such as plain text. The "pre- execute" codepath is fairly uncommon however can apply to non-integer primary key columns with SQL defaults when RETURNING is not used. Tests exist here to ensure typing is applied to a typed expression for default, but in the case of an untyped SQL value, we know the type from the column, so apply this. Change-Id: I5d8b391611c137b9f700115a50a2bf5b30abfe94 Fixes: #3923
* Treat collation names as identifiersMike Bayer2017-03-232-8/+25
| | | | | | | | | | | The expression used for COLLATE as rendered by the column-level :func:`.expression.collate` and :meth:`.ColumnOperators.collate` is now quoted as an identifier when the name is case sensitive, e.g. has uppercase characters. Note that this does not impact type-level collation, which is already quoted. Change-Id: I83d5d9cd1e66a4f20b96303bb84c5f360d5d6a1a Fixes: #3785
* Merge branch 'master' of https://bitbucket.org/jalessio/sqlalchemyMike Bayer2017-03-181-1/+1
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| * Fix typos ('expicit' -> 'explicit')Jamie Alessio2017-03-141-1/+1
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* | Implement comments for tables, columnsFrazer McLean2017-03-171-1/+28
|/ | | | | | | | | | | | | | Added support for SQL comments on :class:`.Table` and :class:`.Column` objects, via the new :paramref:`.Table.comment` and :paramref:`.Column.comment` arguments. The comments are included as part of DDL on table creation, either inline or via an appropriate ALTER statement, and are also reflected back within table reflection, as well as via the :class:`.Inspector`. Supported backends currently include MySQL, Postgresql, and Oracle. Co-authored-by: Mike Bayer <mike_mp@zzzcomputing.com> Fixes: #1546 Change-Id: Ib90683850805a2b4ee198e420dc294f32f15d35d
* Add "empty in" strategies; default to "static"Mike Bayer2017-03-143-32/+108
| | | | | | | | | | | | | | | The longstanding behavior of the :meth:`.Operators.in_` and :meth:`.Operators.not_in_` operators emitting a warning when the right-hand condition is an empty sequence has been revised; a new flag :paramref:`.create_engine.empty_in_strategy` allows an empty "IN" expression to generate a simple boolean expression, or to invoke the previous behavior of dis-equating the expression to itself, with or without a warning. The default behavior is now to emit the simple boolean expression, allowing an empty IN to be evaulated without any performance penalty. Change-Id: I65cc37f2d7cf65a59bf217136c42fee446929352 Fixes: #3907
* Enable sane_multi_rowcount for cx_OracleMike Bayer2017-03-141-3/+31
| | | | | | | Also add some tests to test_rowcount. Change-Id: Idaa18fdc4fcfeb615725531c37de77decf76a783 Fixes: #3932
* add autoescape option to startswith, endswith, and containsDiana Clarke2017-03-141-13/+111
| | | | | | Fixes: #2694 Change-Id: I34c0bdcb01c2b76b9ab6cd315dae13e3dd8a502b Pull-request: https://github.com/zzzeek/sqlalchemy/pull/207
* Allow SchemaType and Variant to work togetherMike Bayer2017-03-072-10/+97
| | | | | | | | | | | | | | Added support for the :class:`.Variant` and the :class:`.SchemaType` objects to be compatible with each other. That is, a variant can be created against a type like :class:`.Enum`, and the instructions to create constraints and/or database-specific type objects will propagate correctly as per the variant's dialect mapping. Also added testing for some potential double-event scenarios on TypeDecorator but it seems usually this doesn't occur. Change-Id: I4a7e7c26b4133cd14e870f5bc34a1b2f0f19a14a Fixes: #2892
* Repair missing "checkfirst" for test suiteMike Bayer2017-03-071-0/+1
| | | | | | | | the test_metadata tests trigger the before_create dispatch without the checkfirst flag. Postgresql backend should be able to tolerate this. Change-Id: Ife497cc3a4eb2812462116f94aad732864225f3f
* Only use schema_translate_map on SchemaItem subclassesMike Bayer2017-02-281-1/+45
| | | | | | | | | | | | | Fixed bug in new "schema translate" feature where the translated schema name would be invoked in terms of an alias name when rendered along with a column expression; occurred only when the source translate name was "None". The "schema translate" feature now only takes effect for :class:`.SchemaItem` and :class:`.SchemaType` subclasses, that is, objects that correspond to a DDL-creatable structure in a database. Change-Id: Ie8cb35aeaba2c67efec8c8c57c219e4dd346e44a Fixes: #3924
* Make all tests to be PEP8 compliantKhairi Hafsham2017-02-0723-183/+199
| | | | | | | | tested using pycodestyle version 2.2.0 Fixes: #3885 Change-Id: I5df43adc3aefe318f9eeab72a078247a548ec566 Pull-request: https://github.com/zzzeek/sqlalchemy/pull/343
* Merge "Support python3.6"mike bayer2017-01-137-16/+18
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| * Support python3.6Mike Bayer2017-01-137-16/+18
| | | | | | | | | | | | | | | | | | | | | | Corrects some warnings and adds tox config. Adds DeprecationWarning to the error category. Large sweep for string literals w/ backslashes as this is common in docstrings Co-authored-by: Andrii Soldatenko Fixes: #3886 Change-Id: Ia7c838dfbbe70b262622ed0803d581edc736e085 Pull-request: https://github.com/zzzeek/sqlalchemy/pull/337
* | Pass **kw to bound params in multi valuesMike Bayer2017-01-091-0/+12
|/ | | | | | | | | Fixed bug where literal_binds compiler flag was not honored by the :class:`.Insert` construct for the "multiple values" feature; the subsequent values are now rendered as literals. Change-Id: I81ac358fd59995885d482e7571620090210865d2 Fixes: #3880
* Tighten rules for order_by(Label) resolutionMike Bayer2017-01-061-0/+50
| | | | | | | | | | | | | | | | - Fixed bug originally introduced in 0.9 via :ticket:`1068` where order_by(<some Label()>) would order by the label name based on name alone, that is, even if the labeled expression were not at all the same expression otherwise present, implicitly or explicitly, in the selectable. The logic that orders by label now ensures that the labeled expression is related to the one that resolves to that name before ordering by the label name; additionally, the name has to resolve to an actual label explicit in the expression elsewhere, not just a column name. This logic is carefully kept separate from the order by(textual name) feature that has a slightly different purpose. Change-Id: I44fc36dab34380cc238c1e79ecbe23f1628d588a Fixes: #3882
* Call nextval() on sequence when doing INSERT from SELECTMike Bayer2016-12-211-1/+20
| | | | | | | | Fixed bug where an INSERT from SELECT where the source table contains an autoincrementing Sequence would fail to compile correctly. Change-Id: I41eb9f65789a4007712ae61ed5fa23a9839a5128 Fixes: #3877
* Ensure Variant passes along impl right-hand typeMike Bayer2016-11-221-1/+21
| | | | | | | | | | | | | | | | | | | Fixed issue in :class:`.Variant` where the "right hand coercion" logic, inherited from :class:`.TypeDecorator`, would coerce the right-hand side into the :class:`.Variant` itself, rather than what the default type for the :class:`.Variant` would do. In the case of :class:`.Variant`, we want the type to act mostly like the base type so the default logic of :class:`.TypeDecorator` is now overridden to fall back to the underlying wrapped type's logic. Is mostly relevant for JSON at the moment. This patch additionally adds documentation and basic tests to allow for backend-agnostic comparison of JSON index elements to other objects. A future version should attempt to improve upon this by providing "astext", "asint" types of operators. Change-Id: I7b7b45d604a4ae8d1dc236a5a1248695aab5232e Fixes: #3859
* Count columns using PrimaryKeyConstraint.__len__ directlyMike Bayer2016-11-121-0/+17
| | | | | | | | | | PrimaryKeyConstraint is present on Table however on table() and others it's a ColumnSet. The warning here only needs len() and PrimaryKeyConstraint supports that directly in the same way as ColumnSet. Change-Id: I19c11a39110bfef48cdea49a471e7ab80b537538 Fixes: #3842
* Convert expression type for concat + EnumMike Bayer2016-10-201-0/+19
| | | | | | | | | | | | Fixed bug involving new value translation and validation feature in :class:`.Enum` whereby using the enum object in a string concatenation would maintain the :class:`.Enum` type as the type of the expression overall, producing missing lookups. A string concatenation against an :class:`.Enum`-typed column now uses :class:`.String` as the datatype of the expression itself. Change-Id: Id402054e3ef008e0250c740dbb7e1c80f339fe78 Fixes: #3833
* Ensure TypeDecorator delegates _set_parent_with_dispatchMike Bayer2016-10-201-0/+67
| | | | | | | | | | | | | | | | Ensure TypeDecorator delegates _set_parent_with_dispatch as well as _set_parent to itself as well as its impl, as the TypeDecorator class itself may have an active SchemaType implementation as well. Fixed regression which occurred as a side effect of :ticket:`2919`, which in the less typical case of a user-defined :class:`.TypeDecorator` that was also itself an instance of :class:`.SchemaType` (rather than the implementation being such) would cause the column attachment events to be skipped for the type itself. Change-Id: I0afb498fd91ab7d948e4439e7323a89eafcce0bc Fixes: #3832
* Add a qualifying character to multi INSERT..VALUES parameter namesMike Bayer2016-10-171-85/+85
| | | | | | | | | | Changed the naming convention used when generating bound parameters for a multi-VALUES insert statement, so that the numbered parameter names don't conflict with the anonymized parameters of a WHERE clause, as is now common in a PostgreSQL ON CONFLICT construct. Change-Id: I3188d100fe4d322a47d344d6a63d3e40b915f228 Fixes: #3828
* Add explicit copy() to EnumMike Bayer2016-10-171-6/+41
| | | | | | | | | | | | | | | | | The Boolean and Enum types both place SchemaType second in the inheritance hierarchy. In the case of Enum, this works out that the copy() method is called from the base TypeEngine which fails to transfer _create_events. The test suite doesn't seem to work with the inhertance hierarchy set up like this as the event listeners don't work out, the _on_metadata_create and _on_table_create hooks cause the production of an adapted type which then adds event listeners that cause deque changed while iteration. It's not clear why Enum /Boolean don't have this problem. But in any case it seems like the class mechanics for these types remains fragile and would benefit from yet another refactor someday. Change-Id: Ib641a5d2321b00f58bbe98dd0c5e789374db32b2 Fixes: #3827
* spelling: Postgresql -> PostgreSQLVille Skyttä2016-10-082-2/+2
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* Spelling fixesVille Skyttä2016-10-083-4/+4
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* Change autoincrement compileerror to a warningMike Bayer2016-10-072-41/+60
| | | | | | | | Users are complaining that IntegrityError is no longer raised. Change-Id: I0855d5b7a98d4338f0910501b6e6d404ba33634d Fixes: #3216
* Propagate execution_options at compile stageMike Bayer2016-10-052-1/+41
| | | | | | | | Compiler can now set up execution options and additionally will propagate autocommit from embedded CTEs. Change-Id: I19db7b8fe4d84549ea95342e8d2040189fed1bbe Fixes: #3805
* Check for __clause_element__() in ORM insert/updateMike Bayer2016-10-051-0/+10
| | | | | | | | | | | | | | | | ORM attributes can now be assigned any object that is has a ``__clause_element__()`` attribute, which will result in inline SQL the way any :class:`.ClauseElement` class does. This covers other mapped attributes not otherwise transformed by further expression constructs. As part of this, it was considered that we could add __clause_element__() to ClauseElement, however this causes endless loops in a "while" pattern and this pattern has been identified in third party libraries. Add a test to ensure we never make that change. Change-Id: I9e15b3f1c4883fd3909acbf7dc81d034c6e3ce1d Fixes: #3802
* Add "eager_parenthesis" late-compilation rule, use w/ PG JSON/HSTOREMike Bayer2016-10-011-2/+27
| | | | | | | | | | | | Added compiler-level flags used by Postgresql to place additional parenthesis than would normally be generated by precedence rules around operations involving JSON, HSTORE indexing operators as well as within their operands since it has been observed that Postgresql's precedence rules for at least the HSTORE indexing operator is not consistent between 9.4 and 9.5. Fixes: #3806 Change-Id: I5899677b330595264543b055abd54f3c76bfabf2
* Escape literal string values passed to server_defaultMike Bayer2016-09-301-0/+28
| | | | | | | | | | | A string sent as a column default via the :paramref:`.Column.server_default` parameter is now escaped for quotes. This change is backwards compatible with code that may have been working around this previously. Change-Id: I341298a76cc67bc0a53df4ab51ab9379f2294cdd Fixes: #3809
* Merge "Exclude eq and ne from associative operators"mike bayer2016-09-201-0/+8
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| * Exclude eq and ne from associative operatorsJohn Passaro2016-09-191-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | The "eq" and "ne" operators are no longer part of the list of "associative" operators, while they remain considered to be "commutative". This allows an expression like ``(x == y) == z`` to be maintained at the SQL level with parenthesis. Pull request courtesy John Passaro. Fixes: #3799 Change-Id: I3759d8987b35649d7418b6524316c9e70c857e68 Pull-request: https://github.com/zzzeek/sqlalchemy/pull/308
* | Support bindparam() with callable for primaryjoinMike Bayer2016-09-191-2/+31
|/ | | | | | | | | | | Fixes the comparison of bindparam() objects based on the "callable" parameter being present which helps to correctly detect use_get, and also checks for "callable" when detecting parameters for value substitution and will not impact the object if present. Change-Id: I4c93ee5d404d2648dd9835beeae0c5fb67e37d19 Fixes: #3767
* Repair foreign_keys population for Join._refresh_for_new_columnMike Bayer2016-09-151-0/+38
| | | | | | | | | | Fixed bug where setting up a single-table inh subclass of a joined-table subclass which included an extra column would corrupt the foreign keys collection of the mapped table, thereby interfering with the initialization of relationships. Change-Id: I04a0cf98fd456d12d5a5b9e77a46a01246969a63 Fixes: #3797
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