Ensure the _FunctionGenerator method do not shadow the function class
of the same name
Fixed a typing issue where the typed members of :data:`.func` would return
the appropriate class of the same name, however this creates an issue for
typecheckers such as Zuban and pyrefly that assume :pep:`749` style
typechecking even if the file states that it's a :pep:`563` file; they see
the returned name as indicating the method object and not the class object.
These typecheckers are actually following along with an upcoming test
harness that insists on :pep:`749` style name resolution for this case
unconditionally. Since :pep:`749` is the way of the future regardless,
differently-named type aliases have been added for these return types.
Fixes: #13167
Change-Id: If58a3858001c78ab21b2ed343205dfd9ce868576
Fixed typing issue where :class:`.coalesce` would not return the correct
return type when a nullable form of that argument were passed, even though
this function is meant to select the non-null entry among possibly null
arguments. Pull request courtesy Yannick PÉROUX.
Closes: #12963
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/12963
Pull-request-sha: 05d0d9784d
Change-Id: Ife83a384ea57faf446c1fdb542df14627348f40f
try again to remove the overloads to the generic functionn
generator (like coalesce, array_agg, etc).
As of mypy 1.15 it still does now work, but a simpler version
is added in this change
Change-Id: I8b97ae00298ec6f6bf8580090e5defff71e1ceb0
The return type of `array_agg()` is declared as a `Sequence[T]` where `T` is bound to the type of input argument.
This is implemented by making `array_agg()` inheriting from `ReturnTypeFromArgs` which provides appropriate overloads of `__init__()` to support this.
This usage of ReturnTypeFromArgs is a bit different from previous ones as the return type of the function is not exactly the same as that of its arguments, but a "collection" (a generic, namely a Sequence here) of the argument types. Accordingly, we adjust the code of `tools/generate_sql_functions.py` to retrieve the "collection" type from 'fn_class' annotation and generate expected return type.
Also add a couple of hand-written typing tests for PostgreSQL.
Related to #6810Closes: #12461
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/12461
Pull-request-sha: ba27cbb863
Change-Id: I3fd538cc7092a0492c26970f0b825bf70ddb66cd
The :class:`.Row` object now no longer makes use of an intermediary
``Tuple`` in order to represent its individual element types; instead,
the individual element types are present directly, via new :pep:`646`
integration, now available in more recent versions of Mypy. Mypy
1.7 or greater is now required for statements, results and rows
to be correctly typed. Pull request courtesy Yurii Karabas.
Fixes: #10635Closes: #10634
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/10634
Pull-request-sha: 430785c8a0
Change-Id: Ibd0ae31a98b4ea69dcb89f970e640920b2be6c48
* Fixed the argument types passed to functions so that literal expressions
like strings and ints are again interpreted correctly (🎫`10818`)
this includes a reformatting of the changelog message from #10801
to read as a general "fixed regressions" list.
Fixes: #10818
Change-Id: I65ad86e096241863e833608d45f0bdb6069f5896
Completed pep-484 typing for the ``sqlalchemy.sql.functions`` module.
:func:`_sql.select` constructs made against ``func`` elements should now
have filled-in return types.
References: #6810
Change-Id: I5121583c9c5b6f7151f811348c7a281c446cf0b8
Extract a fixture to run mypy on files
Move the plain files to test/typing
Move test files from stubs repository
Transform the fixture module in a package
Change-Id: I23acaecb84e7c4b9010259d44395dc1df83a9385
Added missing init overload to :class:`_sql.Numeric` to allow
type checkers to properly resolve the type var given the
``asdecimal`` parameter.
this fortunately fixes a glitch in the generate_sql_functions script
also
Fixes: #9391
Change-Id: I9cecc40c52711489e9dbe663f110c3b81c7285e4
Added typing for the built-in generic functions that are available from the
:data:`_sql.func` namespace, which accept a particular set of arguments and
return a particular type, such as for :class:`_sql.count`,
:class:`_sql.current_timestamp`, etc.
Fixes: #9129
Change-Id: I1a2e0dcca3048c77e84dc786843a7df05c457dfa
Federico Caselli