django/django — pull request #19 by akaariai (2012-04-29 02:58:38+00:00)
Title: Prevent Oracle from changing field.null to True

Fixed #17957 -- when using Oracle and character fields, the fields
were set null = True to ease the handling of empty strings. This
caused problems when using multiple databases from different vendors,
or when the character field happened to be also a primary key.

The handling was changed so that NOT NULL is not emitted on Oracle
even if field.null = False, and field.null is not touched otherwise.

Thanks to bhuztez for the report, ramiro for triaging & comments and
ikelly for the patch.