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--Some countries have populations more than three times that of any of their neighbours (in the same continent). Give the countries and continents.

Better Beaver answered on August 15, 2021 Popularity 5/10 Helpfulness 4/10

answer --Some countries have populations more than three times that of any of their neighbours (in the same continent). Give the countries and continents.

--Some countries have populations more than three times that of any of their neighbours (in the same continent). Give the countries and continents.

Comment

SELECT name, 
       region 
FROM   bbc x 
WHERE  population > 
       -- this sub query finds each neighbour (not including itself) and returns the max populations multiplied by 3
       (SELECT 3 * MAX(population) 
        FROM   bbc y 
        WHERE  x.region = y.region 
               AND x.name <> y.name)

Popularity 5/10 Helpfulness 4/10 Language whatever

Source: stackoverflow.com

Tags: any countries neighbours whatever

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Contributed on Aug 15 2021

Better Beaver

0 Answers Avg Quality 2/10

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--Some countries have populations more than three times that of any of their neighbours (in the same continent). Give the countries and continents.

Comment

SELECT name, 
       region, 
       population 
FROM   bbc x 
WHERE  population < ALL 
       -- the ALL keyword allows comparison to be made against all the values in a list 
       -- this sub query finds each country that belongs to a region with populations less than 25 million and returns this as a list
       (SELECT population 
        FROM   bbc y 
        WHERE  y.region = x.region 
               AND population > 25000000)

Popularity 5/10 Helpfulness 1/10 Language whatever

Source: stackoverflow.com

Tags: countries neighbours any whatever

Link to this answer
Share Copy Link

Contributed on Aug 15 2021

Better Beaver

0 Answers Avg Quality 2/10

--Some countries have populations more than three times that of any of their neighbours (in the same continent). Give the countries and continents.

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--Some countries have populations more than three times that of any of their neighbours (in the same continent). Give the countries and continents.

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--Some countries have populations more than three times that of any of their neighbours (in the same continent). Give the countries and continents.

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