Nested SELECT Quiz
Nested SELECT quiz
| name | region | area | population | gdp |
|---|---|---|---|---|
| Afghanistan | South Asia | 652225 | 26000000 | |
| Albania | Europe | 28728 | 3200000 | 6656000000 |
| Algeria | Middle East | 2400000 | 32900000 | 75012000000 |
| Andorra | Europe | 468 | 64000 | |
| Bangladesh | South Asia | 143998 | 152600000 | 67144000000 |
| United Kingdom | Europe | 242514 | 59600000 | 2022824000000 |
| ... | ||||
<quiz shuffle=none display=simple> {Select the code that shows the name, region and population of the smallest country in each region |type="()"} - SELECT region, name, FROM bbc x WHERE population <= ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population>0) - SELECT region, name, population FROM bbc WHERE population <= ALL (SELECT population FROM bbc WHERE population>0) + SELECT region, name, population FROM bbc x WHERE population <= ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population>0) - SELECT region, name, population FROM bbc x WHERE population = ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population>0) - SELECT region, name, population FROM bbc x WHERE population <= ALL (SELECT population FROM bbc y WHERE y.region=x.region AND population<0)
{Select the code that shows the countries belonging to regions with all populations over 50000 |type="()"} - SELECT name,region,population FROM bbc x WHERE 50000 <= ALL (SELECT population FROM bbc y WHERE population>0) + SELECT name,region,population FROM bbc x WHERE 50000 <= ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0) - SELECT name,region,population FROM bbc x WHERE 50000 = ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0) - SELECT name,region,population FROM bbc x WHERE 50000 >= ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0) - SELECT name,region,population FROM bbc x WHERE 500000 <= ALL (SELECT population FROM bbc y WHERE x.region=y.region AND y.population>0)
{Select the code that shows the countries with a third of the population of the countries around it |type="()"} + SELECT name, region FROM bbc x WHERE population < ALL (SELECT population/3 FROM bbc y WHERE y.region = x.region AND y.name != x.name) - SELECT name, region FROM bbc x WHERE population = ALL (SELECT population/3 FROM bbc y WHERE y.region = x.region AND y.name != x.name) - SELECT name, region FROM bbc x WHERE population > ALL (SELECT population/3 FROM bbc y WHERE y.region = x.region AND y.name != x.name) - SELECT name, region FROM bbc x WHERE population < ALL (SELECT population*3 FROM bbc y WHERE y.region = x.region AND y.name != x.name) - SELECT name, region FROM bbc x WHERE population < ALL (SELECT population/3 FROM bbc y WHERE y.name != x.name)
{Select the result that would be obtained from the following code: SELECT name FROM bbc WHERE population (SELECT population FROM bbc WHERE name='United Kingdom') AND region IN (SELECT region FROM bbc WHERE region = 'Europe') |type="()"} - Andorra, Albania, Austria, Bulgaria - France,Europe, Germany,Europe, Russia,Europe, Turkey,Europe - France, Germany, Andorra, Albania + France, Germany, Russia, Turkey - France, Germany, Russia, Turkey, Brazil, United State, Canada
{Select the code that would show the countries with a greater GDP then any country in Africa |type="()"} - SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp=0) + SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL) - SELECT name FROM bbc WHERE gdp > ALL (SELECT MIN(gdp) FROM bbc WHERE region = 'Africa' AND gdp IS NOT NULL) - SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Africa' AND population IS NOT NULL) - SELECT name FROM bbc WHERE gdp > ALL (SELECT MAX(gdp) FROM bbc WHERE region = 'Europe' AND gdp IS NOT NULL)
{Select the code that shows the countries with population smaller than Russia but bigger than Denmark |type="()"} - SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Denmark') AND population > (SELECT population FROM bbc WHERE name='Russia') + SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark') - SELECT name FROM bbc WHERE population = (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark') - SELECT name FROM bbc WHERE population > (SELECT population FROM bbc WHERE name='Russia') AND population > (SELECT population FROM bbc WHERE name='Denmark') - SELECT name FROM bbc WHERE population < (SELECT population FROM bbc WHERE name='Russia' AND population > (SELECT population FROM bbc WHERE name='Denmark')
{Select the result that would be obtained from the following code: SELECT name FROM bbc WHERE population > ALL (SELECT MAX(population) FROM bbc WHERE region = 'Europe') AND region ='South Asia' |type="()"} - Afghanistan, Bhutan, Nepal, Sri Lanka, The Maldives + Bangladesh, India, Pakistan - China, India - Brazil, Bangladesh, China, India, Indonesia, Pakistan, United States of America - France, Germany, Russia, Turkey </quiz>