## Bug description

Trying to look at insights for feature flags no longer works (see screenshot below).

<img width="1329" alt="" src="https://user-images.githubusercontent.com/5864173/100642031-de24cb00-32fd-11eb-88b4-047c4f82124f.png">


Removing the breakdown works but then you can't see the difference between the binary values.

![image](https://user-images.githubusercontent.com/5864173/100642046-e2e97f00-32fd-11eb-8ae5-4238f899c8b8.png)


## Expected behavior

Insights should be shown as before.


## How to reproduce

1. Click on the insights link on any feature flag row.

## Environment

Cloud (Clickhouse).

## Additional context



#### *Thank you* for your bug report – we love squashing them!

ee/clickhouse/queries/trends/breakdown.py
from typing import Any, Dict, List, Optional, Tuple, Union
from django.db.models.manager import BaseManager
from django.utils import timezone
from ee.clickhouse.client import sync_execute
from ee.clickhouse.models.action import format_action_filter
from ee.clickhouse.models.cohort import format_filter_query
from ee.clickhouse.models.property import parse_prop_clauses
from ee.clickhouse.queries.trends.util import parse_response, process_math
from ee.clickhouse.queries.util import get_interval_annotation_ch, get_time_diff, parse_timestamps
from ee.clickhouse.sql.events import NULL_BREAKDOWN_SQL, NULL_SQL
from ee.clickhouse.sql.person import GET_LATEST_PERSON_SQL
from ee.clickhouse.sql.trends.breakdown import (
    BREAKDOWN_COHORT_JOIN_SQL,
    BREAKDOWN_CONDITIONS_SQL,
    BREAKDOWN_DEFAULT_SQL,
    BREAKDOWN_PERSON_PROP_JOIN_SQL,
    BREAKDOWN_PROP_JOIN_SQL,
    BREAKDOWN_QUERY_SQL,
)
from ee.clickhouse.sql.trends.top_elements import TOP_ELEMENTS_ARRAY_OF_KEY_SQL
from ee.clickhouse.sql.trends.top_person_props import TOP_PERSON_PROPS_ARRAY_OF_KEY_SQL
from posthog.constants import TREND_FILTER_TYPE_ACTIONS
from posthog.models.action import Action
from posthog.models.cohort import Cohort
from posthog.models.entity import Entity
from posthog.models.filter import Filter
class ClickhouseTrendsBreakdown: