SELECT Quiz

Some questions concerning basic SQL statements

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
...

Select the code which produces this table

name	population
Bahrain	1234571
Swaziland	1220000
Timor-Leste	1066409

FROM world
SELECT name, population BETWEEN 1000000 AND 1250000

FROM name, population 
WHERE population BETWEEN 1000000 AND 1250000
SELECT world

SELECT name, population
  FROM world
 WHERE population BETWEEN 1000000 AND 1250000

SELECT population BETWEEN 1000000 AND 1250000
FROM world

WHERE population BETWEEN 1000000 AND 1250000
SELECT name, population FROM world

Pick the result you would obtain from this code:

      SELECT name, population
      FROM world
      WHERE name LIKE "Al%"

Table-A

Albania

Algeria

Table-B

%bania	3200000
%geria	32900000

Table-C

Al

0

Table-D

Albania

3200000

Table-E

Albania	3200000
Algeria	32900000

Select the code which shows the countries that end in A or L

SELECT name FROM world
 WHERE name LIKE 'a%' AND name LIKE 'l%'

 
SELECT name FROM world
 WHERE name LIKE 'a%' OR name LIKE 'l%'

 
SELECT name FROM world
 WHERE name LIKE '%a' AND name LIKE '%l'

 
SELECT name FROM world
 WHERE name LIKE '%a' OR 'l%'

SELECT name FROM world
 WHERE name LIKE '%a' OR name LIKE '%l'

Pick the result from the query

SELECT name,length(name)
FROM world
WHERE length(name)=5 and region='Europe'

name	length(name)
Benin	5
Lybia	5
Egypt	5

name	length(name)
Italy	5
Egypt	5
Spain	5

name	length(name)
Italy	5
Malta	5
Spain	5

name	length(name)
Italy	5
France	6
Spain	5

name	length(name)
Sweden	6
Norway	6
Poland	6

Here are the first few rows of the world table:

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
...

Pick the result you would obtain from this code:

SELECT name, area*2 FROM world WHERE population = 64000

Andorra

234

Andorra

468

Andorra

936

Andorra

4680

Andorra	936
Albania	57456

Select the code that would show the countries with an area larger than 50000 and a population smaller than 10000000

SELECT name, area, population
  FROM world
 WHERE area < 50000 AND population < 10000000

SELECT name, area, population
  FROM world
 WHERE area < 50000 AND population > 10000000

SELECT name, area, population
  FROM world
 WHERE area > 50000 AND population < 10000000

SELECT name, area, population
  FROM world
 WHERE area > 50000 AND population > 10000000

 
SELECT name, area, population
  FROM world
 WHERE area = 50000 AND population = 10000000

Select the code that shows the population density of China, Australia, Nigeria and France

 
SELECT name, area/population
FROM world WHERE name IN ('China', 'Nigeria', 'France', 'Australia')

SELECT name, area/population
FROM world WHERE name LIKE ('China', 'Nigeria', 'France', 'Australia')

SELECT name, population/area
  FROM world
 WHERE name IN ('China', 'Nigeria', 'France', 'Australia')

SELECT name, population/area
  FROM world
 WHERE name LIKE ('China', 'Nigeria', 'France', 'Australia')

SELECT name, population
  FROM world
 WHERE name IN ('China', 'Nigeria', 'France', 'Australia')