Difference between revisions of "SUM and COUNT Quiz"

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</table>
 
</table>
 
</div>
 
</div>
<quiz shuffle=none display=simple>
+
<div class=quiz>
{Select the statement that shows the sum of population of all countries in 'Europe'
+
<div class=q>Select the statement that shows the sum of population of all countries in 'Europe'
|type="()"}
+
<syntaxhighlight class=d lang='sql'> SELECT name, population FROM bbc WHERE region = 'Europe' </syntaxhighlight>
- SELECT name, population FROM bbc WHERE region = 'Europe'
+
<syntaxhighlight class=d lang='sql'> SELECT population FROM bbc WHERE region = 'Europe' SUM BY region </syntaxhighlight>
- SELECT population FROM bbc WHERE region = 'Europe' SUM BY region
+
<syntaxhighlight class='d y' lang='sql'> SELECT SUM(population) FROM bbc WHERE region = 'Europe' </syntaxhighlight>
+ SELECT SUM(population) FROM bbc WHERE region = 'Europe'
+
<syntaxhighlight class=d lang='sql'> SELECT SUM(population FROM bbc WHERE region = 'Europe') </syntaxhighlight>
- SELECT SUM(population FROM bbc WHERE region = 'Europe')
+
<syntaxhighlight class=d lang='sql'> SUM population FROM bbc WHERE region = 'Europe' </syntaxhighlight>
- SUM population FROM bbc WHERE region = 'Europe'
+
</div>
  
{Select the statement that shows the number of countries with population smaller than 150000
+
<div class=q>Select the statement that shows the number of countries with population smaller than 150000
|type="()"}
+
<syntaxhighlight class=d class='d y' lang='sql'> SELECT COUNT(name) FROM bbc WHERE population < 150000 </syntaxhighlight>
+ SELECT COUNT(name) FROM bbc WHERE population < 150000
+
<syntaxhighlight class=d lang='sql'> SELECT COUNT(population < 150000) FROM bbc </syntaxhighlight>
- SELECT COUNT(population < 150000) FROM bbc
+
<syntaxhighlight class=d lang='sql'> SELECT name FROM bbc WHERE population < 150000 </syntaxhighlight>
- SELECT name FROM bbc WHERE population < 150000
+
<syntaxhighlight class=d lang='sql'> SELECT population AS COUNT FROM bbc WHERE population < 150000 </syntaxhighlight>
- SELECT population AS COUNT FROM bbc WHERE population < 150000
+
<syntaxhighlight class=d lang='sql'> SELECT SUM() FROM bbc WHERE population < 150000 </syntaxhighlight>
- SELECT SUM() FROM bbc WHERE population < 150000
+
</div>
  
{Select the full set of SQL aggregate functions
+
<div class=q>Select the full set of SQL aggregate functions
|type="()"}
+
<div class=d>AVG(), COUNT(), FIRST(), LAST(), SUM()</div>
- AVG(), COUNT(), FIRST(), LAST(), SUM()
+
<div class=d>AVG(), COUNT(), MAX(), MEDIAN(), MIN(), ROUND(), SUM()</div>
- AVG(), COUNT(), MAX(), MEDIAN(), MIN(), ROUND(), SUM()
+
<div class='d y'>AVG(), COUNT(), FIRST(), LAST(), MAX(), MIN(), SUM()</div>
+ AVG(), COUNT(), FIRST(), LAST(), MAX(), MIN(), SUM()
+
<div class=d>AVG(), COUNT(), MAX(), MIN(), SUM()</div>
- AVG(), COUNT(), MAX(), MIN(), SUM()
+
<div class=d>COUNT(), SUM()</div>
- COUNT(), SUM()
+
</div>
  
{Select the result that would be obtained from the following code:SELECT region, SUM(area) FROM bbc WHERE SUM(area) > 15000000 GROUP BY region
+
<div class=q>Select the result that would be obtained from the following code:
<table style='float:left'><caption>Table-A</caption><tr><td>Europe</td><td>17000000</td></tr></table>
+
<syntaxhighlight lang='sql'>
<table style='float:left'><caption>Table-B</caption><tr><td>Europe</td><td>17000000</td></tr><tr><td>Asia-Pacific</td><td>23460000</td></tr><tr><td>North America</td><td>21660000</td></tr></table>
+
SELECT region, SUM(area)
<table style='float:left'><caption>Table-C</caption><tr><td>Europe</td></tr><tr><td>Asia-Pacific</td></tr><tr><td>North America</td></tr></table>
+
  FROM bbc  
|type="()"}
+
  WHERE SUM(area) > 15000000  
- Table-A
+
  GROUP BY region
- Table-B
+
</syntaxhighlight>
- Table-C
+
<table class=d><caption>Table-A</caption><tr><td>Europe</td><td>17000000</td></tr></table>
- No result due to invalid use of the GROUP BY function
+
<table class=d><caption>Table-B</caption><tr><td>Europe</td><td>17000000</td></tr><tr><td>Asia-Pacific</td><td>23460000</td></tr><tr><td>North America</td><td>21660000</td></tr></table>
+ No result due to invalid use of the WHERE function
+
<table class=d><caption>Table-C</caption><tr><td>Europe</td></tr><tr><td>Asia-Pacific</td></tr><tr><td>North America</td></tr></table>
 +
<div class=d>No result due to invalid use of the GROUP BY function</div>
 +
<div class='d y'>No result due to invalid use of the WHERE function</div>
 +
</div>
  
{Select the statement that shows the average population of 'Poland', 'Germany' and 'Denmark'
+
<div class=q>Select the statement that shows the average population of 'Poland', 'Germany' and 'Denmark'
|type="()"}
+
<syntaxhighlight class=d lang='sql'> SELECT AVG(population) FROM bbc WHERE name = ('Poland', 'Germany', 'Denmark') </syntaxhighlight>
- SELECT AVG(population) FROM bbc WHERE name = ('Poland', 'Germany', 'Denmark')
+
<syntaxhighlight class=d class='d y' lang='sql'> SELECT AVG(population) FROM bbc WHERE name IN ('Poland', 'Germany', 'Denmark') </syntaxhighlight>
+ SELECT AVG(population) FROM bbc WHERE name IN ('Poland', 'Germany', 'Denmark')
+
<syntaxhighlight class=d lang='sql'> SELECT AVG(population) FROM bbc WHERE name LIKE ('Poland', 'Germany', 'Denmark') </syntaxhighlight>
- SELECT AVG(population) FROM bbc WHERE name LIKE ('Poland', 'Germany', 'Denmark')
+
<syntaxhighlight class=d lang='sql'> SELECT AVG(population) FROM bbc WHERE name LIKE (Poland, Germany, Denmark) </syntaxhighlight>
- SELECT AVG(population) FROM bbc WHERE name LIKE (Poland, Germany, Denmark)
+
<syntaxhighlight class=d lang='sql'> SELECT population FROM bbc WHERE name IN ('Poland', 'Germany', 'Denmark') </syntaxhighlight>
- SELECT population FROM bbc WHERE name IN ('Poland', 'Germany', 'Denmark')
+
</div>
  
{Select the statement that shows the medium population density of each region
+
<div class=q>Select the statement that shows the medium population density of each region
|type="()"}
+
<syntaxhighlight class=d lang='sql'> SELECT region, AVG(population/area) AS density FROM bbc </syntaxhighlight>
- SELECT region, AVG(population/area) AS density FROM bbc
+
<syntaxhighlight class=d lang='sql'> SELECT region, COUNT(population)/COUNT(area) AS density FROM bbc GROUP BY region </syntaxhighlight>
- SELECT region, COUNT(population)/COUNT(area) AS density FROM bbc GROUP BY region
+
<syntaxhighlight class=d lang='sql'> SELECT region, SUM(population)/COUNT(area) AS density FROM bbc GROUP BY region </syntaxhighlight>
- SELECT region, SUM(population)/COUNT(area) AS density FROM bbc GROUP BY region
+
<syntaxhighlight class=d lang='sql'> SELECT region, SUM(population)/SUM(area) AS density FROM bbc HAVING region </syntaxhighlight>
- SELECT region, SUM(population)/SUM(area) AS density FROM bbc HAVING region
+
<syntaxhighlight class='d y' lang='sql'> SELECT region, SUM(population)/SUM(area) AS density FROM bbc GROUP BY region </syntaxhighlight>
+ SELECT region, SUM(population)/SUM(area) AS density FROM bbc GROUP BY region
+
</div>
  
{Select the statement that shows the name and population density of the country with the largest population
+
<div class=q>Select the statement that shows the name and population density of the country with the largest population
|type="()"}
+
<syntaxhighlight class=d lang='sql'> SELECT name, density AS population/area FROM bbc WHERE population = MAX(population) </syntaxhighlight>
- SELECT name, density AS population/area FROM bbc WHERE population = MAX(population)
+
<syntaxhighlight class=d lang='sql'> SELECT name, density AS population/area FROM bbc WHERE population = (SELECT MAX(population) FROM bbc) </syntaxhighlight>
- SELECT name, density AS population/area FROM bbc WHERE population = (SELECT MAX(population) FROM bbc)  
+
<syntaxhighlight class=d lang='sql'> SELECT name, MAX (population) FROM bbc WHERE population / (SELECT area FROM bbc) </syntaxhighlight>
- SELECT name, MAX (population) FROM bbc WHERE population / (SELECT area FROM bbc)  
+
<syntaxhighlight class=d class='d y' lang='sql'> SELECT name, population/area AS density FROM bbc WHERE population = (SELECT MAX(population) FROM bbc) </syntaxhighlight>
+ SELECT name, population/area AS density FROM bbc WHERE population = (SELECT MAX(population) FROM bbc)
+
<syntaxhighlight class=d lang='sql'> SELECT name, population/area AS density FROM bbc WHERE population > (SELECT MAX(population) FROM bbc) </syntaxhighlight>
- SELECT name, population/area AS density FROM bbc WHERE population > (SELECT MAX(population) FROM bbc)  
+
</div>
  
{Pick the result that would be obtained from the following code: SELECT region, SUM(area) FROM bbc GROUP BY region HAVING SUM(area)<= 20000000
+
<div class=q>Pick the result that would be obtained from the following code:  
<table style='float:left'><caption>Table-A</caption><tr><td>732240</td></tr><tr><td>13403102</td></tr><tr><td>17740392</td></tr><tr><td>4943771</td></tr></table>
+
<syntaxhighlight lang='sql'>
<table style='float:left'><caption>Table-B</caption><tr><td>Africa</td><td>22550927</td></tr><tr><td>Asia-Pacific</td><td>28759578</td></tr><tr><td>Europe</td><td>23866987</td></tr><tr><td>North America</td><td>21660000</td></tr></table>
+
SELECT region, SUM(area)  
<table style='float:left'><caption>Table-C</caption><tr><td>Africa</td></tr><tr><td>Asia-Pacific</td></tr><tr><td>Europe</td></tr><tr><td>North America</td></tr></table>
+
  FROM bbc  
<table style='float:left'><caption>Table-D</caption><tr><td>Americas</td><td>732240</td></tr><tr><td>Middle East</td><td>13403102</td></tr><tr><td>South America</td><td>17740392</td></tr><tr><td>South Asia</td><td>49437710</td></tr></table>
+
  GROUP BY region  
<table style='float:left'><caption>Table-E</caption><tr><td>Americas</td></tr><tr><td>Middle East</td></tr><tr><td>South America</td></tr><tr><td>South Asia</td></tr></table>
+
  HAVING SUM(area)<= 20000000
|type="()"}
+
</syntaxhighlight>
- Table-A
+
<table class=d><caption>Table-A</caption><tr><td>732240</td></tr><tr><td>13403102</td></tr><tr><td>17740392</td></tr><tr><td>4943771</td></tr></table>
- Table-B
+
<table class=d><caption>Table-B</caption><tr><td>Africa</td><td>22550927</td></tr><tr><td>Asia-Pacific</td><td>28759578</td></tr><tr><td>Europe</td><td>23866987</td></tr><tr><td>North America</td><td>21660000</td></tr></table>
- Table-C
+
<table class=d><caption>Table-C</caption><tr><td>Africa</td></tr><tr><td>Asia-Pacific</td></tr><tr><td>Europe</td></tr><tr><td>North America</td></tr></table>
+ Table-D
+
<table class='d y'><caption>Table-D</caption><tr><td>Americas</td><td>732240</td></tr><tr><td>Middle East</td><td>13403102</td></tr><tr><td>South America</td><td>17740392</td></tr><tr><td>South Asia</td><td>9437710</td></tr></table>
- Table-E
+
<table class=d><caption>Table-E</caption><tr><td>Americas</td></tr><tr><td>Middle East</td></tr><tr><td>South America</td></tr><tr><td>South Asia</td></tr></table>
 +
</div>
  
</quiz>
+
</div>
  
 
[[Category:Quizzes]]
 
[[Category:Quizzes]]

Latest revision as of 18:53, 22 April 2015

SUM and COUNT QUIZ

bbc
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 statement that shows the sum of population of all countries in 'Europe'
 SELECT name, population FROM bbc WHERE region = 'Europe'
 SELECT population FROM bbc WHERE region = 'Europe' SUM BY region
 SELECT SUM(population) FROM bbc WHERE region = 'Europe'
 SELECT SUM(population FROM bbc WHERE region = 'Europe')
 SUM population FROM bbc WHERE region = 'Europe'
Select the statement that shows the number of countries with population smaller than 150000
 SELECT COUNT(name) FROM bbc WHERE population < 150000
 SELECT COUNT(population < 150000) FROM bbc
 SELECT name FROM bbc WHERE population < 150000
 SELECT population AS COUNT FROM bbc WHERE population < 150000
 SELECT SUM() FROM bbc WHERE population < 150000
Select the full set of SQL aggregate functions
AVG(), COUNT(), FIRST(), LAST(), SUM()
AVG(), COUNT(), MAX(), MEDIAN(), MIN(), ROUND(), SUM()
AVG(), COUNT(), FIRST(), LAST(), MAX(), MIN(), SUM()
AVG(), COUNT(), MAX(), MIN(), SUM()
COUNT(), SUM()
Select the result that would be obtained from the following code:
 SELECT region, SUM(area)
   FROM bbc 
  WHERE SUM(area) > 15000000 
  GROUP BY region
Table-A
Europe17000000
Table-B
Europe17000000
Asia-Pacific23460000
North America21660000
Table-C
Europe
Asia-Pacific
North America
No result due to invalid use of the GROUP BY function
No result due to invalid use of the WHERE function
Select the statement that shows the average population of 'Poland', 'Germany' and 'Denmark'
 SELECT AVG(population) FROM bbc WHERE name = ('Poland', 'Germany', 'Denmark')
 SELECT AVG(population) FROM bbc WHERE name IN ('Poland', 'Germany', 'Denmark')
 SELECT AVG(population) FROM bbc WHERE name LIKE ('Poland', 'Germany', 'Denmark')
 SELECT AVG(population) FROM bbc WHERE name LIKE (Poland, Germany, Denmark)
 SELECT population FROM bbc WHERE name IN ('Poland', 'Germany', 'Denmark')
Select the statement that shows the medium population density of each region
 SELECT region, AVG(population/area) AS density FROM bbc
 SELECT region, COUNT(population)/COUNT(area) AS density FROM bbc GROUP BY region
 SELECT region, SUM(population)/COUNT(area) AS density FROM bbc GROUP BY region
 SELECT region, SUM(population)/SUM(area) AS density FROM bbc HAVING region
 SELECT region, SUM(population)/SUM(area) AS density FROM bbc GROUP BY region
Select the statement that shows the name and population density of the country with the largest population
 SELECT name, density AS population/area FROM bbc WHERE population = MAX(population)
 SELECT name, density AS population/area FROM bbc WHERE population = (SELECT MAX(population) FROM bbc)
 SELECT name, MAX (population) FROM bbc WHERE population / (SELECT area FROM bbc)
 SELECT name, population/area AS density FROM bbc WHERE population = (SELECT MAX(population) FROM bbc)
 SELECT name, population/area AS density FROM bbc WHERE population > (SELECT MAX(population) FROM bbc)
Pick the result that would be obtained from the following code:
 SELECT region, SUM(area) 
   FROM bbc 
  GROUP BY region 
  HAVING SUM(area)<= 20000000
Table-A
732240
13403102
17740392
4943771
Table-B
Africa22550927
Asia-Pacific28759578
Europe23866987
North America21660000
Table-C
Africa
Asia-Pacific
Europe
North America
Table-D
Americas732240
Middle East13403102
South America17740392
South Asia9437710
Table-E
Americas
Middle East
South America
South Asia