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Software ==>	SQL (203 exercises)
Topic ==>	Aggregation and grouping (12 exercises)
Level ==>	Average difficulty
Subject ==>	SQL training

Use SELECT, FROM, WHERE, GROUP BY, HAVING and ORDER BY to list non-European busy countries

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

Before you can do this exercise, you'll need to download and unzip this file . Once you've done this:

Go into SQL Server Management Studio;
Open the SQL file you've just unzipped (you can press CTRL + O to do this); then
Execute this script.

This will generate the database that you'll need to use in order to do this exercise (note that the database and script are only to be used for exercises published on this website, and may not be reused or distributed in any form without the prior written permission of Wise Owl).

Create a query listing out for each continent and country the number of events taking place therein:

The first few of the 42 rows you should get from this query, if you sort the results by country name.

You'll need to join the tblContinent, tblCountry and tblEvent tables. All good practice!

Now change your query so that it omits events taking place in the continent of Europe:

You should now be down to 25 rows.

Finally, change your query so that it only shows countries having 5 or more events:

You should now be down to 3 rows.

A thought: you should just have used every one of the SFWGHO letters!

Save your query as Post Brexit events, then close it down.

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.

You can find other training resources for the subject of this exercise here:

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From:	Bhavya59
When:	01 Aug 24 at 12:50

SELECT ContinentName

,CountryName

,COUNT(EventID) AS 'No of Events'

FROM tblCountry c

INNER JOIN tblContinent c1 ON c.ContinentID=c1.ContinentID

INNER JOIN tblEvent e ON c.CountryID=e.CountryID

WHERE ContinentName!='Europe'

GROUP BY ContinentName,CountryName

HAVING COUNT(EventID)>5

From:	Orin
When:	25 Feb 24 at 16:17

Technically, we don't need the O to obtain your final picture ;-)

From:	Rupchand7
When:	14 Nov 23 at 06:16

select continentname as Continent, countryname as Country, count(eventid) as [Number of Events]
from tblContinent join tblCountry on tblContinent.ContinentID = tblCountry.ContinentID join
tblEvent on tblCountry.CountryID = tblEvent.CountryID group by Continentname, Countryname

From:	FloridaMan
When:	23 Sep 21 at 14:40

select max(con.ContinentName) as Continent_Name

, cou.CountryName as Country_Name

, count(e.EventName) as Number_of_Events

from [dbo].[tblEvent] e

left join [dbo].[tblCategory] c

on e.CategoryID = c.CategoryID

left join [dbo].[tblCountry] cou

on e.CountryID = cou.CountryID

left join [dbo].[tblContinent] con

on cou.ContinentID = con.ContinentID

where ContinentName not in('Europe')

group by cou.CountryName

having count(e.EventName) >= 5

order by cou.CountryName

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EXERCISE TOPIC

SQL EXERCISES

SQL EXERCISES

Use SELECT, FROM, WHERE, GROUP BY, HAVING and ORDER BY to list non-European busy countries

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