WISE OWL EXERCISES
SQL EXERCISES
SQL EXERCISES
- Simple Queries (4)
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- Archived (70)
SQL | Subqueries exercise | Selecting data from a sub query
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The answer to the exercise will be included and explained if you attend the course listed below!
| Software ==> | SQL (198 exercises) |
| Version ==> | Any version of SQL Server |
| Topic ==> | Subqueries (5 exercises) |
| Level ==> | Average difficulty |
| Course ==> | Introduction to SQL |
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Write a SELECT statement to return events from the 3 continents with the fewest events. To do this first write a SELECT query which returns all the continents and events.
Unsorted results returns 459 events.
Now underneath write another SELECT statemnt which lists events for the 3 continents with the lowest COUNT of events. Put the COUNT in the ORDER BY clause, not the SELECT.
Not as many penguin parties as you'd expect.
Finally use the second SELECT as a filter in the first SELECT's WHERE clause. To do this use ContinentName IN (Sub Query).
Only 8 events in these 3 continents - maybe stick to Ibiza and the Islands!
Optionally save this as Quiet places to visit.sql, and close it down.