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* tutorial 2.0 WIPreview/mike_bayer/tutorial20Mike Bayer2020-10-311-2/+2
| | | | | | | | | | | | | | Add SelectBase.exists() method as it seems strange this is not available already. The Exists construct itself does not provide full SELECT-building capabilities so it makes sense this should be used more like a scalar_subquery. Make sure stream_results is getting set up when yield_per is used, for 2.0 style statements as well. this was hardcoded inside of Query.yield_per() and is now moved to take place within QueryContext. Change-Id: Icafcd4fd9b708772343d56edf40995c9e8f835d6
* Apply underscore naming to several more operatorsjonathan vanasco2020-10-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | The operator changes are: * `isfalse` is now `is_false` * `isnot_distinct_from` is now `is_not_distinct_from` * `istrue` is now `is_true` * `notbetween` is now `not_between` * `notcontains` is now `not_contains` * `notendswith` is now `not_endswith` * `notilike` is now `not_ilike` * `notlike` is now `not_like` * `notmatch` is now `not_match` * `notstartswith` is now `not_startswith` * `nullsfirst` is now `nulls_first` * `nullslast` is now `nulls_last` Because these are core operators, the internal migration strategy for this change is to support legacy terms for an extended period of time -- if not indefinitely -- but update all documentation, tutorials, and internal usage to the new terms. The new terms are used to define the functions, and the legacy terms have been deprecated into aliases of the new terms. Fixes: #5435 Change-Id: Ifbd7cb1cdda5981990243c4fc4b4ff467dc132ac
* Correct reflection for composite primary keysfulpm2020-10-211-0/+54
| | | | | | | | | | | | | | Fixes: #5661 ### Description Fixes reflection of composite primary keys to maintain the correct column order in the MSSQL and SQLite dialects. Closes: #5662 Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/5662 Pull-request-sha: b568dec7070b4f3ee46a528bdf16fb237baade2a Change-Id: I452b23cbf7f389c4a0a34cffce5c32498efe37d2
* Ensure no compiler visit method tries to access .statementMike Bayer2020-10-191-1/+56
| | | | | | | | | | | | Fixed structural compiler issue where some constructs such as MySQL / PostgreSQL "on conflict / on duplicate key" would rely upon the state of the :class:`_sql.Compiler` object being fixed against their statement as the top level statement, which would fail in cases where those statements are branched from a different context, such as a DDL construct linked to a SQL statement. Fixes: #5656 Change-Id: I568bf40adc7edcf72ea6c7fd6eb9d07790de189e
* Add deprecation for base Executable.bindMike Bayer2020-10-161-10/+11
| | | | | | | | | | These attributes will be removed in SQLAlchemy 2.0. Also alters the deprecation message to qualify the type of object correctly. this in turn requires changes in the warnings filter and deprecation tests. Change-Id: I5779d9813e88f42e5db0c7b5e3ffff1d1535c203
* Merge "Deprecate strings indicating attribute names"mike bayer2020-10-141-0/+11
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| * Deprecate strings indicating attribute namesMike Bayer2020-10-131-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using strings to represent relationship names in ORM operations such as :meth:`_orm.Query.join`, as well as strings for all ORM attribute names in loader options like :func:`_orm.selectinload` is deprecated and will be removed in SQLAlchemy 2.0. The class-bound attribute should be passed instead. This provides much better specificity to the given method, allows for modifiers such as ``of_type()``, and reduces internal complexity. Additionally, the ``aliased`` and ``from_joinpoint`` parameters to :meth:`_orm.Query.join` are also deprecated. The :func:`_orm.aliased` construct now provides for a great deal of flexibility and capability and should be used directly. Fixes: #4705 Fixes: #5202 Change-Id: I32f61663d68026154906932913c288f269991adc
* | Deprecate bound metadataMike Bayer2020-10-121-0/+6
|/ | | | | | | | | | | | | | | | | The :paramref:`_schema.MetaData.bind` argument as well as the overall concept of "bound metadata" is deprecated in SQLAlchemy 1.4 and will be removed in SQLAlchemy 2.0. The parameter as well as related functions now emit a :class:`_exc.RemovedIn20Warning` when :ref:`deprecation_20_mode` is in use. Added new parameter :paramref:`_automap.AutomapBase.prepare.autoload_with` which supersedes :paramref:`_automap.AutomapBase.prepare.reflect` and :paramref:`_automap.AutomapBase.prepare.engine`. Fixes: #4634 Fixes: #5142 Change-Id: Iaabf9b481931e2fb68b97b5954c32e65772a298e
* Merge "Drop python 3.5 support"mike bayer2020-10-101-2/+1
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| * Drop python 3.5 supportFederico Caselli2020-10-081-2/+1
| | | | | | | | | | Fixes: #5634 Change-Id: Ie8d4076ee35234b535a04e6fb9321096df3f648b
* | Merge "generalize scoped_session proxying and apply to asyncio elements"mike bayer2020-10-101-2/+2
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| * | generalize scoped_session proxying and apply to asyncio elementsMike Bayer2020-10-101-2/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reworked the proxy creation used by scoped_session() to be based on fully copied code with augmented docstrings and moved it into langhelpers. asyncio session, engine, connection can now take advantage of it so that all non-async methods are availble. Overall implementation of most important accessors / methods on AsyncConnection, etc. , including awaitable versions of invalidate, execution_options, etc. In order to support an event dispatcher on the async classes while still allowing them to hold __slots__, make some adjustments to the event system to allow that to be present, at least rudimentally. Fixes: #5628 Change-Id: I5eb6929fc1e4fdac99e4b767dcfd49672d56e2b2
* | dont try to update on None query_strMike Bayer2020-10-081-1/+2
|/ | | | | | | py2k coverage tests were failing because of this API usage that seems to pass on Py3k but not py2k Change-Id: Ic7ceb03c2660f411f487fce73ce5c2fa2c752031
* Revert "Use monotonic time for pool age measurement"Mike Bayer2020-10-071-12/+2
| | | | | | | | | | This reverts commit 0220b58917b5a979891b5765f6ac5095e0368489. I completely misread https://www.python.org/dev/peps/pep-0418/#rationale and the accuracy of monotonic() is *worse* on windows than time.time(), which is bizarre. Change-Id: I2d571e268a2051bea68736507773d3904403af9e
* Use monotonic time for pool age measurementMike Bayer2020-10-071-2/+12
| | | | | | | | | | | | | The internal clock used by the :class:`_pool.Pool` object is now time.monotonic_time() under Python 3. Under Python 2, time.time() is still used, which is legacy. This clock is used to measure the age of a connection against its starttime, and used in comparisons against the pool_timeout setting as well as the last time the pool was marked as invalid to determine if the connection should be recycled. Previously, time.time() was used which was subject to inaccuracies as a result of system clock changes as well as poor time resolution on windows. Change-Id: I94f90044c1809508e26a5a00134981c2a00d0405
* add --notimingintensive; block from github jobsMike Bayer2020-10-071-0/+12
| | | | | | | | | | | | | | | | | | | | | | this provides a front-end option to disable tests marked as timing_intensive, all of which are in test_pool, which are more fragile and aren't consistent on the github runners. also remove /reduce unnecessary time.sleep() from two other pool tests that are not timing intensive. note that this removes test_hanging_connect_within_overflow from the github runs via the timing_intensive requirement. I've also removed MockReconnectTest from exclusions as those are really important tests and they use mocks so should not have platform dependent issues. Need to see what the windows failures are. Closes: #5633 Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/5633 Pull-request-sha: 166833e16ec342dfa10edb287d7aa495ddd1b59d Change-Id: Icb3d284a2a952e2495d80fa91e22e0b32a54340f
* Merge "Fetch first support"mike bayer2020-10-052-10/+180
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| * Fetch first supportFederico Caselli2020-10-022-10/+180
| | | | | | | | | | | | | | | | | | Add support to ``FETCH {FIRST | NEXT} [ count ] {ROW | ROWS} {ONLY | WITH TIES}`` in the select for the supported backends, currently PostgreSQL, Oracle and MSSQL. Fixes: #5576 Change-Id: Ibb5871a457c0555f82b37e354e7787d15575f1f7
* | Enable pypy tests on github workflowFederico Caselli2020-10-021-1/+1
|/ | | | | Fixes: #5223 Change-Id: I0952e54ed9af2952ea340be1945311376ffc1ad2
* accommodate for null in sqlite regex handlerMike Bayer2020-10-021-0/+1
| | | | | Fixes: #5624 Change-Id: Ic20dcde0a1e96b9981c63cac3cd34c7fdc7bd395
* Add reflection for Identity columnsFederico Caselli2020-09-283-8/+147
| | | | | | | | | | | | | | | | | | | | | | | | | Added support for reflecting "identity" columns, which are now returned as part of the structure returned by :meth:`_reflection.Inspector.get_columns`. When reflecting full :class:`_schema.Table` objects, identity columns will be represented using the :class:`_schema.Identity` construct. Fixed compilation error on oracle for sequence and identity column ``nominvalue`` and ``nomaxvalue`` options that require no space in them. Improved test compatibility with oracle 18. As part of the support for reflecting :class:`_schema.Identity` objects, the method :meth:`_reflection.Inspector.get_columns` no longer returns ``mssql_identity_start`` and ``mssql_identity_increment`` as part of the ``dialect_options``. Use the information in the ``identity`` key instead. The mssql dialect will assume that at least MSSQL 2005 is used. There is no hard exception raised if a previous version is detected, but operations may fail for older versions. Fixes: #5527 Fixes: #5324 Change-Id: If039fe637c46b424499e6bac54a2cbc0dc54cb57
* upgrade to black 20.8b1Mike Bayer2020-09-2810-55/+117
| | | | | | | It's better, the majority of these changes look more readable to me. also found some docstrings that had formatting / quoting issues. Change-Id: I582a45fde3a5648b2f36bab96bad56881321899b
* Add deprecation warning for .join().alias()Gord Thompson2020-09-281-3/+3
| | | | | | | | | The :meth:`_sql.Join.alias` method is deprecated and will be removed in SQLAlchemy 2.0. An explicit select + subquery, or aliasing of the inner tables, should be used instead. Fixes: #5010 Change-Id: Ic913afc31f0d70b0605f9a7af2742a0de1f9ad19
* Support pytest 6.xMike Bayer2020-09-261-7/+4
| | | | | | | pytest has removed support for pytest.Class().collect() and we need to use from_parent. Change-Id: Ia5fed9b22e76c99f71489283acee207f996f52a4
* new docs WIPMike Bayer2020-09-241-1/+6
| | | | | | | | | | | | | | | This WIP is part of the final push for 1.4's docs to fully "2.0-ize" what we can, and have it all ready. So far this includes a rewrite of the 2.0 migration, set up for the 1.4 /2.0 docs style, and a total redesign of the index page using a new flex layout in zzzeeksphinx. It also reworks some of the API reference sections to have more subheaders. zzzeeksphinx is also enhanced to provide automatic summaries for all api doc section. Change-Id: I01d360cb9c8749520246b96ee6496143c6037918
* Complete deprecation of from_self()Mike Bayer2020-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For most from_self() tests, move them into test/orm/test_deprecated.py and replace the existing test with one that uses aliased() plus a subquery. This then revealed a few more issues. Related items: * Added slice() method to GenerativeSelect, to match that of orm.Query and to make possible migration of one of the from_self() tests. moved the utility functions used for this from orm/util into sql/util. * repairs a caching issue related to subqueryload where information being derived from the cached path info was mixing up with query information based on the per-query state, specifically an AliasedClass that is per query. * for the above issue, it seemed like path_registry maybe had to change so that it represents AliasedClass objects as their cache key rather than on identity, but it wasn't needed. still seems like it would be more correct. * enhances the error message raised by coercions for a case such as when an AliasedClass holds onto a select() object and not a subquery(); will name the original and resolved object for clarity (although how is AliasedClass able to accept a Select() object in the first place?) * Added _set_propagate_attrs() to Query so that again if it's passed to AliasedClass, it doesn't raise an error during coercion, but again maybe that should also be rejected up front Fixes: #5368 Change-Id: I5912aa611d899acc87a75eb5ee9f95990592f210
* Create a framework to allow all SQLALCHEMY_WARN_20 to passMike Bayer2020-09-164-10/+103
| | | | | | | | | | | | | | | | | | | | | As the test suite has widespread use of many patterns that are deprecated, enable SQLALCHEMY_WARN_20 globally for the test suite but then break the warnings filter out into a whole list of all the individual warnings we are looking for. this way individual changesets can target a specific class of warning, as many of these warnings will indivdidually affect dozens of files and potentially hundreds of lines of code. Many warnings are also resolved here as this patch started out that way. From this point forward there should be changesets that target a subset of the warnings at a time. For expediency, updates some migration 2.0 docs for ORM as well. Change-Id: I98b8defdf7c37b818b3824d02f7668e3f5f31c94
* Rename Core expression isnot, not_in_jonathan vanasco2020-09-141-2/+2
| | | | | | | | | | | | | | | | | | | Several operators are renamed to achieve more consistent naming across SQLAlchemy. The operator changes are: * `isnot` is now `is_not` * `not_in_` is now `not_in` Because these are core operators, the internal migration strategy for this change is to support legacy terms for an extended period of time -- if not indefinitely -- but update all documentation, tutorials, and internal usage to the new terms. The new terms are used to define the functions, and the legacy terms have been deprecated into aliases of the new terms. Fixes: #5429 Change-Id: Ia1e66e7a50ac35d3f6260d8bf6ba3ce8087cbad2
* Deprecate engine-wise ss cursors; repair mariadbconnectorMike Bayer2020-09-131-3/+16
| | | | | | | | | | | | | | | | | | | The server_side_cursors engine-wide feature relies upon regexp parsing of statements a well as general guessing as to when the feature should be used. This is not within the 2.0 way of doing things and should be removed. Additionally, mariadbconnector defaults to unbuffered cursors; add new cursor hooks so that mariadbconnector can specify buffered or unbuffered cursors without too much difficulty. This will also correctly default mariadbconnector to buffered cursors which should repair the segfaults we've been getting. Try to restore the assert_raises that was removed in 5b6dfc0c38bf1f01da4b8 to see if mariadbconnector segfaults are resolved. Change-Id: I77f1c972c742e40694972f578140bb0cac8c39eb
* Merge "Improve handling of covering indexes"mike bayer2020-09-122-23/+54
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| * Improve handling of covering indexesGord Thompson2020-09-122-23/+54
| | | | | | | | | | | | | | | | | | | | Improved support for covering indexes (with INCLUDE columns). Added the ability for postgresql to render CREATE INDEX statements with an INCLUDE clause from Core. Index reflection also report INCLUDE columns separately for both mssql and postgresql (11+). Fixes: #4458 Change-Id: If0b82103fbc898cdaeaf6a6d2d421c732744acd6
* | Merge "Add missing "temp_table_reflect_indexes" to SuiteRequirements"mike bayer2020-09-121-0/+4
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| * | Add missing "temp_table_reflect_indexes" to SuiteRequirementsGord Thompson2020-09-081-0/+4
| |/ | | | | | | | | | | | | Provide a default value for this requirement to expose it to external dialects. Change-Id: I3801a9134493efb65caa6793ef466a3cfb701592
* | Build out new declarative systems; deprecate mapper()Mike Bayer2020-09-102-6/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | The ORM Declarative system is now unified into the ORM itself, with new import spaces under ``sqlalchemy.orm`` and new kinds of mappings. Support for decorator-based mappings without using a base class, support for classical style-mapper() calls that have access to the declarative class registry for relationships, and full integration of Declarative with 3rd party class attribute systems like ``dataclasses`` and ``attrs`` is now supported. Fixes: #5508 Change-Id: I130b2b6edff6450bfe8a3e6baa099ff04b5471ff
* | Update select usage to use the new 1.4 formatFederico Caselli2020-09-087-174/+130
|/ | | | | | | | | | | | | | | | This change includes mainly that the bracketed use within select() is moved to positional, and keyword arguments are removed from calls to the select() function. it does not yet fully address other issues such as keyword arguments passed to the table.select(). Additionally, allows False / None to both be considered as "disable" for all of select.correlate(), select.correlate_except(), query.correlate(), which establishes consistency with passing of ``False`` for the legact select(correlate=False) argument. Change-Id: Ie6c6e6abfbd3d75d4c8de504c0cf0159e6999108
* Merge "Improve reflection for mssql temporary tables"mike bayer2020-09-012-5/+24
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| * Improve reflection for mssql temporary tablesGord Thompson2020-09-012-5/+24
| | | | | | | | | | Fixes: #5506 Change-Id: I718474d76e3c630a1b71e07eaa20cefb104d11de
* | Add support for classical mapping of dataclassesVáclav Klusák2020-09-011-0/+4
|/ | | | | | | | | | | | | | Added support for direct mapping of Python classes that are defined using the Python ``dataclasses`` decorator. See the section :ref:`mapping_dataclasses` for background. Pull request courtesy Václav Klusák. Fixes: #5027 Closes: #5516 Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/5516 Pull-request-sha: bb48c63d1561ca48c954ad9f84a3eb2646571115 Change-Id: Ie33db2aae4adeeb5d99633fe926b9c30bab0b885
* Merge "internal test framework files for standardization of is_not/not_in;"mike bayer2020-08-302-2/+12
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| * internal test framework files for standardization of is_not/not_in;jonathan vanasco2020-08-292-2/+12
| | | | | | | | | | | | this is safe for 1.3.x Change-Id: Icba38fdc20f5d8ac407383a4278ccb346e09af38
* | Emit v2.0 deprecation warning for "implicit autocommit"Gord Thompson2020-08-284-4/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "Implicit autocommit", which is the COMMIT that occurs when a DML or DDL statement is emitted on a connection, is deprecated and won't be part of SQLAlchemy 2.0. A 2.0-style warning is emitted when autocommit takes effect, so that the calling code may be adjusted to use an explicit transaction. As part of this change, DDL methods such as :meth:`_schema.MetaData.create_all` when used against a :class:`_engine.Engine` or :class:`_engine.Connection` will run the operation in a BEGIN block if one is not started already. The MySQL and MariaDB dialects now query from the information_schema.tables system view in order to determine if a particular table exists or not. Previously, the "DESCRIBE" command was used with an exception catch to detect non-existent, which would have the undesirable effect of emitting a ROLLBACK on the connection. There appeared to be legacy encoding issues which prevented the use of "SHOW TABLES", for this, but as MySQL support is now at 5.0.2 or above due to :ticket:`4189`, the information_schema tables are now available in all cases. Fixes: #4846 Change-Id: I733a7e0e17477a63607fb9931c87c393bbd7ac57
* | Add support for regular expression on supported backend.Federico Caselli2020-08-272-0/+36
| | | | | | | | | | | | | | | | | | | | | | | | Two operations have been defined: * :meth:`~.ColumnOperators.regexp_match` implementing a regular expression match like function. * :meth:`~.ColumnOperators.regexp_replace` implementing a regular expression string replace function. Fixes: #1390 Change-Id: I44556846e4668ccf329023613bd26861d5c674e6
* | Merge "make URL immutable"mike bayer2020-08-263-15/+15
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| * | make URL immutableMike Bayer2020-08-253-15/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | it's not really correct that URL is mutable and doesn't do any argument checking. propose replacing it with an immutable named tuple with rich copy-and-mutate methods. At the moment this makes a hard change to the CreateEnginePlugin docs that previously recommended url.query.pop(). I can't find any plugins on github other than my own that are using this feature, so see if we can just make a hard change on this one. Fixes: #5526 Change-Id: I28a0a471d80792fa8c28f4fa573d6352966a4a79
* | | Updates for MariaDB sequencesFederico Caselli2020-08-221-1/+3
| |/ |/| | | | | | | | | | | | | | | | | | | | | MariaDB should not run a Sequence if it has optional=True. Additionally, rework the rules in crud.py to accommodate the new combination MariaDB brings us, which is a dialect that supports both cursor.lastrowid, explicit sequences, *and* no support for returning. Co-authored-by: Mike Bayer <mike_mp@zzzcomputing.com> Fixes: #5528 Change-Id: I9a8ea69a34983affa95dfd22186e2908fdf0d58c
* | Merge "Add support for identity columns"mike bayer2020-08-213-8/+95
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| * Add support for identity columnsFederico Caselli2020-08-193-8/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Added the :class:`_schema.Identity` construct that can be used to configure identity columns rendered with GENERATED { ALWAYS | BY DEFAULT } AS IDENTITY. Currently the supported backends are PostgreSQL >= 10, Oracle >= 12 and MSSQL (with different syntax and a subset of functionalities). Fixes: #5362 Fixes: #5324 Fixes: #5360 Change-Id: Iecea6f3ceb36821e8b96f0b61049b580507a1875
* | Merge "normalize execute style for events, 2.0"mike bayer2020-08-201-2/+4
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| * | normalize execute style for events, 2.0Mike Bayer2020-08-201-2/+4
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | The _execute_20 and exec_driver_sql methods should wrap up the parameters so that they represent the single list / single dictionary style of invocation into the legacy methods. then the before_ after_ execute event handlers should be receiving the parameter dictionary as a single dictionary. this requires that we break out distill_params to work differently if event handlers are present. additionally, add deprecation warnings for old argument passing styles. Change-Id: I97cb4d06adfcc6b889f10d01cc7775925cffb116
* | Merge "Implement DDL visitor for PG ENUM with schema translate support"mike bayer2020-08-191-2/+2
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