Insights-from-Data-with-BigQuery-Challenge-Lab
Task 1::=>
SELECT sum(cumulative_confirmed) as total_cases_worldwide
FROM bigquery-public-data.covid19_open_data.covid19_open_data
WHERE date=<change date eg'020-04-10'>
Task 2::=>
with deaths_by_states as (
SELECT subregion1_name as state, sum(cumulative_deceased) as death_count
FROM `bigquery-public-data.covid19_open_data.covid19_open_data`
where country_name="United States of America" and date=<change date eg'020-04-10'> and subregion1_name is NOT NULL
group by subregion1_name
)
select count(*) as count_of_states
from deaths_by_states
where death_count >
Task 3 ::=>
SELECT * FROM (
SELECT subregion1_name as state, sum(cumulative_confirmed) as total_confirmed_cases
FROM `bigquery-public-data.covid19_open_data.covid19_open_data`
WHERE country_code="US" AND date=<change date eg'020-04-10'> AND subregion1_name is NOT NULL
GROUP BY subregion1_name
ORDER BY total_confirmed_cases DESC
) WHERE total_confirmed_cases >
Task 4 ::=>
SELECT sum(cumulative_confirmed) as total_confirmed_cases, sum(cumulative_deceased) as total_deaths, (sum(cumulative_deceased)/sum(cumulative_confirmed))*100 as case_fatality_ratio
FROM bigquery-public-data.covid19_open_data.covid19_open_data
where country_name="Italy" AND date BETWEEN <change month here '2020-04-01'> and < change month here '2020-04-30'>
Task 5 ::=>
SELECT date
FROM bigquery-public-data.covid19_open_data.covid19_open_data
where country_name="Italy" and cumulative_deceased>
order by date asc
limit 1
Task 6 ::=>
WITH india_cases_by_date AS (
SELECT
date,
SUM( cumulative_confirmed ) AS cases
FROM
`bigquery-public-data.covid19_open_data.covid19_open_data`
WHERE
country_name ="India"
AND date between < change the date here'2020-02-21'> and <change the date here'2020-03-15'>
GROUP BY
date
ORDER BY
date ASC
)
, india_previous_day_comparison AS
(SELECT
date,
cases,
LAG(cases) OVER(ORDER BY date) AS previous_day,
cases - LAG(cases) OVER(ORDER BY date) AS net_new_cases
FROM india_cases_by_date
)
select count(*)
from india_previous_day_comparison
where net_new_cases=0
Task 7 ::=>
WITH us_cases_by_date AS (
SELECT
date,
SUM(cumulative_confirmed) AS cases
FROM
`bigquery-public-data.covid19_open_data.covid19_open_data`
WHERE
country_name="United States of America"
AND date between '2020-03-22' and '2020-04-20'
GROUP BY
date
ORDER BY
date ASC
)
, us_previous_day_comparison AS
(SELECT
date,
cases,
LAG(cases) OVER(ORDER BY date) AS previous_day,
cases - LAG(cases) OVER(ORDER BY date) AS net_new_cases,
(cases - LAG(cases) OVER(ORDER BY date))*100/LAG(cases) OVER(ORDER BY date) AS percentage_increase
FROM us_cases_by_date
)
select Date, cases as Confirmed_Cases_On_Day, previous_day as Confirmed_Cases_Previous_Day, percentage_increase as Percentage_Increase_In_Cases
from us_previous_day_comparison
where percentage_increase >
Task 8 ::=>
WITH cases_by_country AS (
SELECT
country_name AS country,
sum(cumulative_confirmed) AS cases,
sum(cumulative_recovered) AS recovered_cases
FROM
bigquery-public-data.covid19_open_data.covid19_open_data
WHERE
date = '2020-05-10'
GROUP BY
country_name
)
, recovered_rate AS
(SELECT
country, cases, recovered_cases,
(recovered_cases * 100)/cases AS recovery_rate
FROM cases_by_country
)
SELECT country, cases AS confirmed_cases, recovered_cases, recovery_rate
FROM recovered_rate
WHERE cases > 50000
ORDER BY recovery_rate desc
LIMIT 10
Task 9 ::=>
WITH
france_cases AS (
SELECT
date,
SUM(cumulative_confirmed) AS total_cases
FROM
`bigquery-public-data.covid19_open_data.covid19_open_data`
WHERE
country_name="France"
AND date IN ('2020-01-24',
<change the date value here'2020-05-10'>)
GROUP BY
date
ORDER BY
date)
, summary as (
SELECT
total_cases AS first_day_cases,
LEAD(total_cases) OVER(ORDER BY date) AS last_day_cases,
DATE_DIFF(LEAD(date) OVER(ORDER BY date),date, day) AS days_diff
FROM
france_cases
LIMIT 1
)
select first_day_cases, last_day_cases, days_diff, POW((last_day_cases/first_day_cases),(1/days_diff))-1 as cdgr
from summary
Task 10 ::=>
SELECT
date, SUM(cumulative_confirmed) AS country_cases,
SUM(cumulative_deceased) AS country_deaths
FROM
bigquery-public-data.covid19_open_data.covid19_open_data
WHERE
date BETWEEN '2020-03-15'
AND '2020-04-30'
AND country_name ="United States of America"
GROUP BY date
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