Django [Postgreq] restore single field/column
I have a model with field creation_date = models.DateTimeField(auto_now_add=True).
Doing some complex manipulations with migration file (converting model to multi-table inheritance and creating new objects) I've accidentally overwriten the field above.
I have backups but need to overwrite only the single field creation_date as there are some fields in table are not align with current state.
I guess there is a way to dump (id, creation_date) in JSON file and update the corresponding objects with for loop.
Is there a way to pull data from gzip backup and save it to .json ? Or some more easier way to go?