# -*- coding: utf-8 -*-
from django.db.backends.postgresql_psycopg2.schema import DatabaseSchemaEditor
from django.db.migrations.state import StateApps
from django.db import migrations

def clear_message_sent_by_message_type_values(apps, schema_editor):
    # type: (StateApps, DatabaseSchemaEditor) -> None
    UserCount = apps.get_model('analytics', 'UserCount')
    StreamCount = apps.get_model('analytics', 'StreamCount')
    RealmCount = apps.get_model('analytics', 'RealmCount')
    InstallationCount = apps.get_model('analytics', 'InstallationCount')
    FillState = apps.get_model('analytics', 'FillState')

    property = 'messages_sent:message_type:day'
    UserCount.objects.filter(property=property).delete()
    StreamCount.objects.filter(property=property).delete()
    RealmCount.objects.filter(property=property).delete()
    InstallationCount.objects.filter(property=property).delete()
    FillState.objects.filter(property=property).delete()

class 
(migrations.Migration):

    dependencies = [('analytics', '0009_remove_messages_to_stream_stat')]

    operations = [
        migrations.RunPython(clear_message_sent_by_message_type_values),
    ]

Migration