Fixtures generated using an app running against mysql can't be imported by that same app if switched to run against postgresql. This appears to have to do with different handling of mixed case table/column names in django's drivers for the two databases.
Here's the error I get. The same error occurs regardless of fixture format. Note the case difference between spackle1_projecttemplate_subjectareas (from the exception) and spackle1_projecttemplate_subjectAreas (from the sql):
Loading 'spackle1/fixtures/spackle1' fixtures...
Installing xml fixture 'spackle1/fixtures/spackle1' from absolute path.
Traceback (most recent call last):
File "./manage.py", line 11, in <module>
execute_manager(settings)
File "/usr/lib/python2.5/site-packages/django/core/management/__init__.py", line 264, in execute_manager
utility.execute()
File "/usr/lib/python2.5/site-packages/django/core/management/__init__.py", line 215, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/lib/python2.5/site-packages/django/core/management/base.py", line 70, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/lib/python2.5/site-packages/django/core/management/base.py", line 84, in execute
output = self.handle(*args, **options)
File "/usr/lib/python2.5/site-packages/django/core/management/commands/loaddata.py", line 119, in handle
cursor.execute(line)
File "/usr/lib/python2.5/site-packages/django/db/backends/util.py", line 19, in execute
return self.cursor.execute(sql, params)
File "/usr/lib/python2.5/site-packages/django/db/backends/postgresql/base.py", line 47, in execute
return self.cursor.execute(smart_str(sql, self.charset), self.format_params(params))
psycopg.ProgrammingError: ERROR: relation "spackle1_projecttemplate_subjectareas" does not exist
SELECT setval('"spackle1_projecttemplate_subjectAreas_id_seq"', coalesce(max("id"), 1), max("id") IS NOT null) FROM spackle1_projecttemplate_subjectAreas;
