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@victorono
Last active April 26, 2024 17:57
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Django - remove duplicate objects where there is more than one field to compare
from django.db.models import Count, Max
unique_fields = ['field_1', 'field_2']
duplicates = (
MyModel.objects.values(*unique_fields)
.order_by()
.annotate(max_id=Max('id'), count_id=Count('id'))
.filter(count_id__gt=1)
)
for duplicate in duplicates:
(
MyModel.objects
.filter(**{x: duplicate[x] for x in unique_fields})
.exclude(id=duplicate['max_id'])
.delete()
)
@DArmstrong87
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Thank you so much! This is EXACTLY what I needed to fix an issue with one of my migrations taking forever.

@victorono
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