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-- This is the first query: | |
SELECT DISTINCT year from population_years; | |
-- Add your additional queries below: | |
SELECT country, population FROM population_years | |
WHERE country = 'Gabon' | |
ORDER BY population DESC | |
LIMIT 1; | |
----------------------------------------- | |
SELECT country, population FROM population_years | |
WHERE year = 2005 | |
ORDER BY population ASC | |
LIMIT 10; | |
----------------------------------------- | |
SELECT DISTINCT country FROM population_years | |
WHERE population > 1.00 AND year = 2010; | |
----------------------------------------- | |
SELECT DISTINCT country FROM population_years | |
WHERE country LIKE '%Islands%'; | |
----------------------------------------- | |
--Find the distinct population in 2000 and 2010 and record data: | |
--SELECT country, population FROM population_years | |
--WHERE country = 'Indonesia' AND year = 2000; | |
--SELECT country, population FROM population_years | |
--WHERE country = 'Indonesia' AND year = 2010; | |
-- After obtaining the data above, I created a new column to contain the population difference. | |
ALTER TABLE population_years | |
ADD COLUMN pop_diff_Indonesia INTEGER; | |
UPDATE population_years | |
SET pop_diff_Indonesia = 242.96834-214.67661 | |
WHERE country = 'Indonesia'; | |
SELECT DISTINCT country, pop_diff_Indonesia FROM population_years | |
WHERE country LIKE '%Indonesia%'; |
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