SQL | Subqueries exercise | List events not in the last 30 countries or the last 15 categories

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Software ==> SQL  (198 exercises)
Version ==> Any version of SQL Server
Topic ==> Subqueries  (5 exercises)
Level ==> Harder than average
Course ==> Introduction to SQL
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Create a subquery to list out all of those events whose:

  • Country id is not in the list of the last 30 country ids in alphabetical order; and
  • Category id is not in the list of the last 15 category ids in alphabetical order.

You'll need to use the words NOT IN, as well as TOP N ... DESC.

Your query should list these 8 events (shown here in chronological order):

8 events returned

These events occurred in countries and categories coming early in the alphabet.

Save this query as Early events, then close it down.

This page has 1 thread Add post
bhilarev   Reply to bhilarevReply
26 Oct 17 at 10:23

Select EventName,EventDetails,CountryID
From EventInfo
Where CountryId NOT IN
(
Select Top 30 CountryID
From Country
Order By CountryName Desc
)
And CategoryID NOT IN
(
Select Top 15 CategoryID
From Category
Order By CategoryName Desc
)

Zerish   Reply to ZerishReply
23 May 18 at 04:34

SELECT EventName,EventDetails
FROM tblCountry
INNER JOIN tblEvent
ON tblCountry.CountryID=tblEvent.CountryID
INNER JOIN tblCategory
ON tblCategory.CategoryID=tblEvent.CategoryID
WHERE tblCountry.CountryID  NOT IN       
(SELECT TOP 30 tblCountry.CountryID
FROM tblCountry
ORDER BY CountryName DESC)
AND
tblCategory.CategoryID NOT IN
(SELECT TOP 15 tblCategory.CategoryID
FROM tblCategory
ORDER BY tblCategory.CategoryName DESC)
ORDER BY EventName DESC

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