#27141: makemigrations fails with PermissionDenied on django_migrations
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Reporter: sjoerdjob | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Migrations | Version: 1.10
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by sjoerdjob):
Responding to Tim Graham his remark on the pull request:
> Sure, you could let us know how inspectdb currently works with this
situation. I guess it might hit that exception block. I guess if that's
better than silently skipping such tables then that solution may not be
ideal, or at least we'd need a new parameter to
introspection.table_names() to skip unowned tables.
Yes, I'm indeed hitting the exception handler there. Based on results from
Django==1.9.7, it comes from `get_table_description` which has a `SELECT *
FROM %s LIMIT 1`.
So I think what would make the most sense would be to add a `try`/`except
DatabaseError` around the part where the applied migrations are obtained,
and then (re-)raise a `MigrationSchemaMissing` instead. The error message
is after all correct: "\nNot checking migrations as it is not possible to
access/create the django_migrations table.".
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Ticket URL: <https://code.djangoproject.com/ticket/27141#comment:3>
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