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[pkgsrc/trunk]: pkgsrc/databases/py-sqlalchemy py-sqlalchemy: updated to 1.3.7

branches:  trunk
changeset: 338490:3d8e08c36cae
user:      adam <>
date:      Mon Aug 26 10:26:49 2019 +0000

py-sqlalchemy: updated to 1.3.7


Released: August 14, 2019

[orm] [bug]
Fixed regression caused by new selectinload for many-to-one logic where a primaryjoin condition not based on real foreign keys would cause KeyError if a related object did not exist for a given key 
value on the parent object.

[orm] [bug]
Fixed bug where using Query.first() or a slice expression in conjunction with a query that has an expression based ?offset? applied would raise TypeError, due to an ?or? conditional against ?offset? 
that did not expect it to be a SQL expression as opposed to an integer or None.


[sql] [bug]
Fixed issue where Index object which contained a mixture of functional expressions which were not resolvable to a particular column, in combination with string-based column names, would fail to 
initialize its internal state correctly leading to failures during DDL compilation.

[sql] [bug]
Fixed bug where TypeEngine.column_expression() method would not be applied to subsequent SELECT statements inside of a UNION or other CompoundSelect, even though the SELECT statements are rendered at 
the topmost level of the statement. New logic now differentiates between rendering the column expression, which is needed for all SELECTs in the list, vs. gathering the returned data type for the 
result row, which is needed only for the first SELECT.

[sql] [bug]
Fixed issue where internal cloning of SELECT constructs could lead to a key error if the copy of the SELECT changed its state such that its list of columns changed. This was observed to be occurring 
in some ORM scenarios which may be unique to 1.3 and above, so is partially a regression fix.


[postgresql] [usecase]
Added new dialect flag for the psycopg2 dialect, executemany_mode which supersedes the previous experimental use_batch_mode flag. executemany_mode supports both the ?execute batch? and ?execute 
values? functions provided by psycopg2, the latter which is used for compiled insert() constructs. Pull request courtesy Yuval Dinari.
See also
Psycopg2 Fast Execution Helpers


[mysql] [bug]
The MySQL dialects will emit ?SET NAMES? at the start of a connection when charset is given to the MySQL driver, to appease an apparent behavior observed in MySQL 8.0 that raises a collation error 
when a UNION includes string columns unioned against columns of the form CAST(NULL AS CHAR(..)), which is what SQLAlchemy?s polymorphic_union function does. The issue seems to have affected PyMySQL 
for at least a year, however has recently appeared as of mysqlclient 1.4.4 based on changes in how this DBAPI creates a connection. As the presence of this directive impacts three separate MySQL 
charset settings which each have intricate effects based on their presense, SQLAlchemy will now emit the directive on new connections to ensure correct behavior.

[mysql] [bug]
Added another fix for an upstream MySQL 8 issue where a case sensitive table name is reported incorrectly in foreign key constraint reflection, this is an extension of the fix first added for 4344 
which affects a case sensitive column name. The new issue occurs through MySQL 8.0.17, so the general logic of the 88718 fix remains in place.
See also - upstream bug

[mysql] [usecase]
Added reserved words ARRAY and MEMBER to the MySQL reserved words list, as MySQL 8.0 has now made these reserved.


[sqlite] [bug]
The dialects that support json are supposed to take arguments json_serializer and json_deserializer at the create_engine() level, however the SQLite dialect calls them _json_serilizer and 
_json_deserilalizer. The names have been corrected, the old names are accepted with a change warning, and these parameters are now documented as create_engine.json_serializer and 

[sqlite] [bug]
Fixed bug where usage of ?PRAGMA table_info? in SQLite dialect meant that reflection features to detect for table existence, list of table columns, and list of foreign keys, would default to any 
table in any attached database, when no schema name was given and the table did not exist in the base schema. The fix explicitly runs PRAGMA for the ?main? schema and then the ?temp? schema if the 
?main? returned no rows, to maintain the behavior of tables + temp tables in the ?no schema? namespace, attached tables only in the ?schema? namespace.


[mssql] [usecase]
Added new mssql.try_cast() construct for SQL Server which emits ?TRY_CAST? syntax. Pull request courtesy Leonel Atencio.


[bug] [events]
Fixed issue in event system where using the once=True flag with dynamically generated listener functions would cause event registration of future events to fail if those listener functions were 
garbage collected after they were used, due to an assumption that a listened function is strongly referenced. The ?once? wrapped is now modified to strongly reference the inner function persistently, 
and documentation is updated that using ?once? does not imply automatic de-registration of listener functions.



[orm] [feature]
Added new loader option method Load.options() which allows loader options to be constructed hierarchically, so that many sub-options can be applied to a particular path without needing to call 
defaultload() many times. Thanks to Alessio Bogon for the idea.

[orm] [bug]
Fixed regression caused by 4365 where a join from an entity to itself without using aliases no longer raises an informative error message, instead failing on an assertion. The informative error 
condition has been restored.

[orm] [bug]
Fixed an issue where the orm._ORMJoin.join() method, which is a not-internally-used ORM-level method that exposes what is normally an internal process of Query.join(), did not propagate the full and 
outerjoin keyword arguments correctly. Pull request courtesy Denis Kataev.

[orm] [bug]
Fixed bug where a many-to-one relationship that specified uselist=True would fail to update correctly during a primary key change where a related column needs to change.

[orm] [bug]
Fixed bug where the detection for many-to-one or one-to-one use with a ?dynamic? relationship, which is an invalid configuration, would fail to raise if the relationship were configured with 
uselist=True. The current fix is that it warns, instead of raises, as this would otherwise be backwards incompatible, however in a future release it will be a raise.

[orm] [bug]
Fixed bug where a synonym created against a mapped attribute that does not exist yet, as is the case when it refers to backref before mappers are configured, would raise recursion errors when trying 
to test for attributes on it which ultimately don?t exist (as occurs when the classes are run through Sphinx autodoc), as the unconfigured state of the synonym would put it into an attribute not 
found loop.

[orm] [performance]
The optimization applied to selectin loading in 4340 where a JOIN is not needed to eagerly load related items is now applied to many-to-one relationships as well, so that only the related table is 
queried for a simple join condition. In this case, the related items are queried based on the value of a foreign key column on the parent; if these columns are deferred or otherwise not loaded on any 
of the parent objects in the collection, the loader falls back to the JOIN method.


[engine] [bug]
Fixed bug where using reflection function such as MetaData.reflect() with an Engine object that had execution options applied to it would fail, as the resulting OptionEngine proxy object failed to 
include a .engine attribute used within the reflection routines.


[sql] [bug]
Adjusted the initialization for Enum to minimize how often it invokes the .__members__ attribute of a given PEP-435 enumeration object, to suit the case where this attribute is expensive to invoke, 
as is the case for some popular third party enumeration libraries.

[sql] [bug] [postgresql]
oduce the correct operator precedence in combination with the array index operator.

[sql] [bug]
Fixed an unlikely issue where the ?corresponding column? routine for unions and other CompoundSelect objects could return the wrong column in some overlapping column situtations, thus potentially 
impacting some ORM operations when set operations are in use, if the underlying select() constructs were used previously in other similar kinds of routines, due to a cached value not being cleared.


[postgresql] [usecase]
Added support for reflection of indexes on PostgreSQL partitioned tables, which was added to PostgreSQL as of version 11.

[postgresql] [usecase]
Added support for multidimensional Postgresql array literals via nesting the postgresql.array object within another one. The multidimensional array type is detected automatically.
See also


[mysql] [bug]
Fixed bug where the special logic to render ?NULL? for the TIMESTAMP datatype when nullable=True would not work if the column?s datatype were a TypeDecorator or a Variant. The logic now ensures that 
it unwraps down to the original TIMESTAMP so that this special case NULL keyword is correctly rendered when requested.

[mysql] [bug]
Enhanced MySQL/MariaDB version string parsing to accommodate for exotic MariaDB version strings where the ?MariaDB? word is embedded among other alphanumeric characters such as ?MariaDBV1?. This 
detection is critical in order to correctly accommodate for API features that have split between MySQL and MariaDB such as the ?transaction_isolation? system variable.


[sqlite] [usecase]
Added support for composite (tuple) IN operators with SQLite, by rendering the VALUES keyword for this backend. As other backends such as DB2 are known to use the same syntax, the syntax is enabled 
in the base compiler using a dialect-level flag tuple_in_values. The change also includes support for ?empty IN tuple? expressions for SQLite when using ?in_()? between a tuple value and an empty set.


[mssql] [bug]
Ensured that the queries used to reflect indexes and view definitions will explicitly CAST string parameters into NVARCHAR, as many SQL Server drivers frequently treat string values, particularly 
those with non-ascii characters or larger string values, as TEXT which often don?t compare correctly against VARCHAR characters in SQL Server?s information schema tables for some reason. These CAST 
operations already take place for reflection queries against SQL Server information_schema. tables but were missing from three additional queries that are against sys. tables.


 databases/py-sqlalchemy/Makefile |   6 +++---
 databases/py-sqlalchemy/distinfo |  10 +++++-----
 2 files changed, 8 insertions(+), 8 deletions(-)

diffs (34 lines):

diff -r d463ad79f6b0 -r 3d8e08c36cae databases/py-sqlalchemy/Makefile
--- a/databases/py-sqlalchemy/Makefile  Mon Aug 26 07:35:26 2019 +0000
+++ b/databases/py-sqlalchemy/Makefile  Mon Aug 26 10:26:49 2019 +0000
@@ -1,12 +1,12 @@
-# $NetBSD: Makefile,v 1.54 2019/07/03 20:19:11 adam Exp $
+# $NetBSD: Makefile,v 1.55 2019/08/26 10:26:49 adam Exp $
-DISTNAME=      SQLAlchemy-1.3.5
+DISTNAME=      SQLAlchemy-1.3.7
 CATEGORIES=    databases python
 COMMENT=       Python SQL toolkit and Object Relational Mapper
 LICENSE=       mit
diff -r d463ad79f6b0 -r 3d8e08c36cae databases/py-sqlalchemy/distinfo
--- a/databases/py-sqlalchemy/distinfo  Mon Aug 26 07:35:26 2019 +0000
+++ b/databases/py-sqlalchemy/distinfo  Mon Aug 26 10:26:49 2019 +0000
@@ -1,6 +1,6 @@
-$NetBSD: distinfo,v 1.49 2019/07/03 20:19:11 adam Exp $
+$NetBSD: distinfo,v 1.50 2019/08/26 10:26:49 adam Exp $
-SHA1 (SQLAlchemy-1.3.5.tar.gz) = d31e921e31cd92a0fa81276d60ac8331ca5101a6
-RMD160 (SQLAlchemy-1.3.5.tar.gz) = 1f9958e9bdf60033c77d888b8fa936c262b1e351
-SHA512 (SQLAlchemy-1.3.5.tar.gz) = 29541a4181ec7b33a44c90522629c135f22d27b659f8e83a26b6ce2f0938708a5f930c62fc99dc03d4be5e2dca2ea174f3f89c71d8e6890460783685290b3da1
-Size (SQLAlchemy-1.3.5.tar.gz) = 5887356 bytes
+SHA1 (SQLAlchemy-1.3.7.tar.gz) = 45b36906f108c730577dc81ba5fd16cce37a74be
+RMD160 (SQLAlchemy-1.3.7.tar.gz) = 47044edf1e55ba334c4e8ee45f9b69ea90e95c2d
+SHA512 (SQLAlchemy-1.3.7.tar.gz) = 87d6929c28c081ec79e20c2285ccbbc2c39f798c6d1660a2fabab6ea53cb4a4c134b5e44d7355bf88f9754a826c1c68b67ff5ad03e7c23c5f6381797ced6a0df
+Size (SQLAlchemy-1.3.7.tar.gz) = 5914400 bytes

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