Difference between revisions of "SUM and COUNT Quiz"

	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 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

	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 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 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)
	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)
	SELECT name, population/area AS density FROM bbc WHERE population = (SELECT MAX(population) FROM bbc)

@@ Line 34: / Line 34: @@
 {Select the statement that shows the name and population density of the country with the largest population
-<div class="hint" title="Population density">Population density is population/area.</div>
 |type="()"}
 + SELECT name, population/area AS density FROM bbc WHERE population = (SELECT MAX(population) FROM bbc)

Revision as of 11:26, 18 July 2012