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zulip/analytics/migrations/0004_add_subgroup.py

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analytics: Add subgroup column to analytics tables. This is a major change to the analytics schema, and is the first step in a number of refactorings and performance improvements. For instance, it allows * Grouping sets of similar CountStats in the *Count tables. For instance, active{_humans,_bots} will now have the same property, but have different subgroup values. * Combining queries that differ only in their value on 1 filter clause, so that we make fewer passes through the zerver tables. For instance, instead of running a query for each of messages_sent_to_public_streams and messages_sent_to_private_streams, we can now run a single query with a group by on Stream.invite_only, and store the group by value in the subgroup column.
2016-10-26 00:41:57 +02:00
from django.db import migrations, models
python: Sort migrations/management command imports with isort. This is a preparatory commit for using isort for sorting all of our imports, merging changes to files where we can easily review the changes as something we're happy with. These are also files with relatively little active development, which means we don't expect much merge conflict risk from these changes.
2020-01-14 21:59:46 +01:00
analytics: Add subgroup column to analytics tables. This is a major change to the analytics schema, and is the first step in a number of refactorings and performance improvements. For instance, it allows * Grouping sets of similar CountStats in the *Count tables. For instance, active{_humans,_bots} will now have the same property, but have different subgroup values. * Combining queries that differ only in their value on 1 filter clause, so that we make fewer passes through the zerver tables. For instance, instead of running a query for each of messages_sent_to_public_streams and messages_sent_to_private_streams, we can now run a single query with a group by on Stream.invite_only, and store the group by value in the subgroup column.
2016-10-26 00:41:57 +02:00
class Migration(migrations.Migration):
dependencies = [
('analytics', '0003_fillstate'),
]
operations = [
migrations.AddField(
model_name='installationcount',
name='subgroup',
field=models.CharField(max_length=16, null=True),
),
migrations.AddField(
model_name='realmcount',
name='subgroup',
field=models.CharField(max_length=16, null=True),
),
migrations.AddField(
model_name='streamcount',
name='subgroup',
field=models.CharField(max_length=16, null=True),
),
migrations.AddField(
model_name='usercount',
name='subgroup',
field=models.CharField(max_length=16, null=True),
),
]