https://github.com/walterthesmart/covid-19-dataexploration
https://github.com/walterthesmart/covid-19-dataexploration
Last synced: 3 months ago
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- Host: GitHub
- URL: https://github.com/walterthesmart/covid-19-dataexploration
- Owner: walterthesmart
- Created: 2022-03-29T08:27:52.000Z (about 3 years ago)
- Default Branch: main
- Last Pushed: 2022-03-29T08:40:02.000Z (about 3 years ago)
- Last Synced: 2025-01-16T13:59:50.113Z (5 months ago)
- Size: 5.77 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Covid-19-dataexploration
Data Exploration of covid-19 Dataset in PostgreSQL serevr
----(1) WE LOOKING AT TOTAL CASES VS TOTAL DEATHS in "Nigeria"
SELECT LOCATION, DATE, TOTAL_CASES, TOTAL_DEATHS, POPULATION, (TOTAL_DEATHS/TOTAL_CASES)* 100 as DEATHPERCENTAGE
FROM COVID.DEATHS
WHERE LOCATION = 'Nigeria'
ORDER BY 1,2
--this shows the likelihood of dying if you contract covid in "Nigeria"
-----(2) LOOKING AT THE TOTAL CASES VS THE POPULATION
SELECT LOCATION, DATE, TOTAL_DEATHS, POPULATION, TOTAL_CASES,(TOTAL_CASES/POPULATION)* 100 as PERCENTAGEPOPULATIONINFECTED
FROM COVID.DEATHS
WHERE LOCATION = 'Nigeria'
ORDER BY 1,2
-- SHOWS WHAT PERCENTAGE OF POPULATION GOT COVID
-----(2) LOOKING AT THE TOTAL CASES VS THE POPULATION-- SHOWS WHAT PERCENTAGE OF POPULATION GOT COVID
----(3) COUNTRIES WITH THE HIGHEST INFECTION RATE PERPOPULATION
SELECT LOCATION,POPULATION, MAX(TOTAL_CASES)as highestinfectioncount,MAX((TOTAL_CASES/POPULATION))* 100 as PERCENTAGEPOPULATIONINFECTED
FROM COVID.DEATHS
GROUP BY LOCATION,POPULATION
ORDER BY PERCENTAGEPOPULATIONINFECTED desc
----(4) COUNTRY WITH THE HIGHEST TOTAL_DEATH
SELECT LOCATION, MAX(TOTAL_DEATHS)as highestdeathscount
FROM COVID.DEATHS
where continent is not null and total_deaths is not null
GROUP BY LOCATION
ORDER BY 2 desc
----(5) SHOWING CONTINENTS WITH HIGHEST DEATH
SELECT LOCATION, MAX(TOTAL_DEATHS)as highestdeathscount
FROM COVID.DEATHS
where continent is null
GROUP BY LOCATION
ORDER BY 1
----(6) SUM OF NEWCASES AND NEWDEATHS PER DAY
SELECT DATE, SUM(NEW_CASES), SUM(NEW_DEATHS)
FROM COVID.DEATHS
WHERE CONTINENT IS NOT NULL
GROUP BY DATE
ORDER BY 1,2
----(7) HERE WE WANT % OF NEW DEATHS AND NEW CASES
SELECT DATE, SUM(NEW_CASES) AS TOTALCASES, SUM(NEW_DEATHS) AS TOTALDEATHS, SUM(NEW_DEATHS)/SUM(NEW_CASES) * 100 as Deathpercentage
FROM COVID.DEATHS
WHERE CONTINENT IS NOT NULL
GROUP BY DATE
ORDER BY 1,2
---(8) WE WANT TO FIND OUT WHAT'S THE TOTAL NUMBER OF PEOPLE IN THE WORLD THAT HAS BEEN VACCINATED
-- IST THING IS WE JOIN BOTH TABLES
SELECT *
FROM COVID.VACCINATION V
JOIN COVID.DEATHS D
ON
V.LOCATION = D.LOCATION AND V.DATE = D.DATE
------ LOOKING AT TOTAL POPULATION VS VACCINATION --WE'D USE THE RUNNING TOTAL CONCEPT HERE
SELECT D.CONTINENT, D.LOCATION, D.DATE, D.POPULATION ,V.NEW_VACCINATIONS, SUM(V.NEW_VACCINATIONS) OVER (PARTITION BY D.LOCATION ORDER BY D.LOCATION,D.DATE) AS ROLLINGPEOPLEVACCINATED
FROM COVID.DEATHS D JOIN COVID.VACCINATION V
ON
V.LOCATION = D.LOCATION AND V.DATE = D.DATE
WHERE D.CONTINENT IS NOT NULL
ORDER BY 2,3
-- NOW WE NEED TO USE THAT NEWLY CREATED COLUMN ALIASED "ROLLINGPEOPLEVACCINATED" TO PERFORM AN OPS((ROLLINGPEOPLEVACCINATED/POPULATION)*100)
USING A TEMP TABLE (TEMPORARY TABLE)
CREATE TABLE PERCENTPOPULATIONVACCINATED
(CONTINENT VARCHAR(100),
LOCATION VARCHAR(100),
DATE DATE,
POPULATION REAL,
NEW_VACCINATIONS REAL,
ROLLINGPEOPLEVACCINATED REAL)
INSERT INTO PERCENTPOPULATIONVACCINATED
SELECT D.CONTINENT, D.LOCATION, D.DATE, D.POPULATION ,V.NEW_VACCINATIONS, SUM(V.NEW_VACCINATIONS) OVER (PARTITION BY D.LOCATION ORDER BY D.LOCATION,D.DATE) AS ROLLINGPEOPLEVACCINATED
FROM COVID.DEATHS D JOIN COVID.VACCINATION V
ON
V.LOCATION = D.LOCATION AND V.DATE = D.DATE
--- THEN (ROLLINGPEOPLEVACCINATED/POPULATION)*100
select *, (ROLLINGPEOPLEVACCINATED/POPULATION)*100 as new
from PERCENTPOPULATIONVACCINATED
--- CREATE A VIEW TO STORE DATA FOR LATER VISUALIZATION
CREATE VIEW COVID.PERCENTPOPULATIONVACCINATED
AS
SELECT D.CONTINENT, D.LOCATION, D.DATE, D.POPULATION ,V.NEW_VACCINATIONS, SUM(V.NEW_VACCINATIONS) OVER (PARTITION BY D.LOCATION ORDER BY D.LOCATION,D.DATE) AS ROLLINGPEOPLEVACCINATED
FROM COVID.DEATHS D JOIN COVID.VACCINATION V
ON
V.LOCATION = D.LOCATION AND V.DATE = D.DATE
WHERE D.CONTINENT IS NOT NULL
SELECT * FROM COVID.PERCENTPOPULATIONVACCINATED
---(8) WE WANT TO FIND OUT WHAT'S THE TOTAL NUMBER OF PEOPLE IN THE WORLD THAT HAS BEEN VACCINATED -- IST THING IS WE JOIN BOTH TABLES