zulip/zerver/migrations/0095_index_unread_user_mess...

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from django.db import migrations
class Migration(migrations.Migration):
dependencies = [
('zerver', '0094_realm_filter_url_validator'),
]
operations = [
migrations.RunSQL(
'''
CREATE INDEX IF NOT EXISTS zerver_usermessage_unread_message_id
ON zerver_usermessage (user_profile_id, message_id)
WHERE (flags & 1) = 0;
''',
reverse_sql='DROP INDEX zerver_usermessage_unread_message_id;',
),
]