id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
35991	Migrations crash on SQLite when renaming part of CompositePrimaryKey.	Mariusz Felisiak	Mariusz Felisiak	"I've created a sample project that tries to rename a column included in `CompositePrimaryKey`. Unfortunately, it crashes:
{{{
$ python manage.py migrate test_one 0002
...
  File ""/django/db/backends/base/schema.py"", line 509, in create_model
    sql, params = self.table_sql(model)
                  ^^^^^^^^^^^^^^^^^^^^^
  File ""/django/db/backends/base/schema.py"", line 290, in table_sql
    constraint_sqls.append(self._pk_constraint_sql(pk.columns))
                                                   ^^^^^^^^^^
  File ""/django/utils/functional.py"", line 47, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
                                         ^^^^^^^^^^^^^^^^^^^
  File ""/django/db/models/fields/composite.py"", line 81, in columns
    return tuple(field.column for field in self.fields)
                                           ^^^^^^^^^^^
  File ""/django/utils/functional.py"", line 47, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
                                         ^^^^^^^^^^^^^^^^^^^
  File ""/django/db/models/fields/composite.py"", line 77, in fields
    return tuple(meta.get_field(field_name) for field_name in self.field_names)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ""/django/db/models/fields/composite.py"", line 77, in <genexpr>
    return tuple(meta.get_field(field_name) for field_name in self.field_names)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ""/django/db/models/options.py"", line 685, in get_field
    raise FieldDoesNotExist(
django.core.exceptions.FieldDoesNotExist: NewRelease has no field named 'name'
}}}

I've attached a sample project. I can prepare a patch in the coming days."	Bug	closed	Database layer (models, ORM)	dev	Release blocker	fixed		Csirmaz Bendegúz Simon Charette	Ready for checkin	1	0	0	0	0	0