-
-
Save codecademydev/f6127f305032a3909cd240057d64f3be to your computer and use it in GitHub Desktop.
Codecademy export
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
-- This is the first query: | |
SELECT DISTINCT year from population_years; | |
-- Add your additional queries below: | |
SELECT population FROM population_years | |
ORDER BY country = 'Gabon' DESC | |
LIMIT 5; | |
SELECT country FROM population_years | |
WHERE year = 2005 | |
ORDER BY population ASC | |
LIMIT 10; | |
SELECT country FROM population_years | |
WHERE population > 100 AND year = 2010; | |
SELECT DISTINCT country FROM population_years | |
WHERE country LIKE '%Islands%'; | |
SELECT population, year FROM population_years | |
WHERE country = 'Indonesia' | |
AND year BETWEEN 2000 AND 2011 | |
ORDER BY year asc; |
--Some different queries with useful results:
SELECT MAX(population)
FROM population_years
WHERE country = 'Gabon';
SELECT *
FROM population_years
WHERE year = 2005
ORDER BY population LIMIT 10;
SELECT DISTINCT country, population
FROM population_years
WHERE population > 100 AND year = 2010;
SELECT DISTINCT country
FROM population_years
WHERE country LIKE '%Islands%';
SELECT COUNT(DISTINCT country)
FROM population_years
WHERE country LIKE '%Islands%';
SELECT population
FROM population_years
WHERE country = 'Indonesia' AND year IN (2000, 2010);
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
-- 4 --
SELECT country, MAX(population) as max_pop_gabon
FROM population_years
WHERE country="Gabon";
-- 5 --
SELECT country, MIN(population) as min_pop
FROM population_years
WHERE year='2005'
GROUP BY country
ORDER BY min_pop
LIMIT 10;
-- 6 --
SELECT DISTINCT country as large_countries
FROM population_years
WHERE population>100 AND year='2010';
-- 7 --
SELECT DISTINCT country as islands
FROM population_years
WHERE country LIKE '%Islands%';
-- 8 --
SELECT year, population, population - LAG(population, 1) OVER(ORDER BY year) AS difference
FROM population_years
WHERE country="Indonesia" AND (year="2000" OR year="2010");