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Martin91/django_aggregation.py

Last active August 10, 2018 07:36
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django work with aggregation functions
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django_aggregation.py
from django.db.models import Count
Model.values('pickup_plan_id').annotate(picked_count=Count('pickup_plan_id')).filter(picked_count__lt=2)
# SELECT
# `model`.`pickup_plan_id`,
# COUNT(`model`.`pickup_plan_id`) AS `picked_count`
# FROM
# `model`
# WHERE
# `model`.`pickup_id` = 870001
# GROUP BY
# `model`.`pickup_plan_id`
# HAVING COUNT(`model`.`pickup_plan_id`) < 2
# ORDER BY NULL
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