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Editorial Team
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Asked: 2026-06-11T17:39:00+00:00

I recently tried to change a column in my database with a south migration

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I recently tried to change a column in my database with a south migration for my django project from a CharField to a IntegerField

I did a python manage.py schemamigration appname --auto

i then applied the migration and it just hung. I stupidly ran this right on my production server before trying out locally. Once I tried locally I got this error in my traceback

  File "/Library/Python/2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg/MySQLdb/cursors.py", line 92, in _warning_check
_mysql_exceptions.Warning: Data truncated for column 'pickup_id' at row 1

When I go into mysql workbench and just try to revert the changes back to a CharField it just hangs in the “preparing” state and eventually times out. My site just hangs wherever this table is used and I cant preform any queries on this particular table.

I’m open to any suggestion. Thank you

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1 Answer

  1. Editorial Team

    What ended up working was applying the –fake parameters to my migrate call

    ./manage migrate appname --fake
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