Open AmandaDoyle opened 3 years ago
zip codes are provided by safegraph, not calculated
Query to see how big of a problem this is:
WITH daily_visits AS(
SELECT safegraph_place_id, poi_cbg, postal_code, date_add('day', row_number() over(partition by safegraph_place_id), date_start) AS date_current, CAST(visits AS SMALLINT) as visits
FROM (
SELECT
safegraph_place_id,
poi_cbg,
postal_code,
CAST(SUBSTR(date_range_start, 1, 10) AS DATE) as date_start,
CAST(SUBSTR(date_range_end, 1, 10) AS DATE) as date_end,
cast(json_parse(visits_by_day) as array<varchar>) as a
FROM safegraph.weekly_patterns
WHERE SUBSTR(poi_cbg,1,5) IN ('36085','36081','36061','36047','36005')
AND CAST('2020-10-01' AS DATE) < dt
AND CAST('2020-11-01' AS DATE) > dt
) b
CROSS JOIN UNNEST(a) as t(visits)
),
boro_counts AS (
SELECT postal_code, COUNT(DISTINCT SUBSTR(poi_cbg,1,5)) as boro_count
FROM daily_visits
GROUP BY postal_code
ORDER BY boro_count DESC)
SELECT
boro_count,
COUNT(postal_code) as num_zipcodes
FROM boro_counts
GROUP BY boro_count
For the month of Oct 2020:
Number of boroughs associated with a zipcode | Number of zipcodes |
---|---|
1 | 231 |
2 | 36 |
3 | 0 |
4 | 22 |
5 | 2 |
ZIP code 10001 is in both MN and BX. The subsector file contains other MN ZIP codes with BX records, such as 10023. How are we calculating ZIP codes?