SQL | Aggregation and grouping exercise | Show the number of events, and the earliest/latest date

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.

Software ==> SQL  (198 exercises)
Version ==> Any version of SQL Server
Topic ==> Aggregation and grouping  (8 exercises)
Level ==> Relatively easy
Subject ==> SQL training
Before you can do this exercise, you'll need to download and unzip this file (if you have any problems doing this, click here for help). Once you've done this:
  1. Go into SQL Server Management Studio;
  2. Open the SQL file you've just unzipped (you can press CTRL + O to do this); then
  3. Execute this script.

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Create a query to list out the following statistics from the table of events:

Statistics report

You'll need to use the COUNT, MAX and MIN functions respectively.

 

Your query won't need a GROUP BY, as you're not grouping by anything - just a SELECT and a FROM.

Save this query as Statto, 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.
This page has 3 threads Add post
Aravindh_sql   Reply to Aravindh_sqlReply
27 May 22 at 11:27

SELECT COUNT(EventID) AS [Number of Events], 
        MAX(EventDate) AS [Last Date], 
    MIN(EventDate) AS [First Date]
FROM     tblEvent

Shalu   Reply to ShaluReply
16 Jan 22 at 17:07

select COUNT(EventName) NumberofEvents,Min(EventDate) FirstDate,Max(EventDate) LastDate
from tblEvent

FloridaMan   Reply to FloridaManReply
23 Sep 21 at 12:40

 

select c.CategoryName as Category_Name

  , count(c.CategoryName) as Number_of_events

  , max(e.EventDate) as Last_Date

  , min(e.EventDate) as First_Date

from [dbo].[tblEvent] e

left join [dbo].[tblCategory] c

on e.CategoryID = c.CategoryID

group by c.CategoryName

order by Number_of_events desc

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