SQL | Variables exercise | Use variables to accumulate information about a given doctor

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 ==> Variables  (8 exercises)
Level ==> Harder than average
Subject ==> SQL training
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First (if you haven't already done so) run the script shown above to generate the Doctor Who training database.

Create a variable to hold a given doctor's number (choose between 9, 10, 11 and 12!):

-- a given doctor

DECLARE @DoctorNumber int = 9

The aim of this exercise is to use the SQL PRINT statement to show the following information about the doctor you've chosen:

Doctor Who details

The details for the doctor we've chosen.


To do tihs, first create a couple of variables and use these to work out the doctor's SQL Server row id number, and his name:

-- get the id number and name of this doctor

DECLARE @DoctorId int

DECLARE @DoctorName varchar(100)

Now create and set another variable to show how many episodes this doctor appeared in:

-- get number of episodes

DECLARE @NumberEpisodes int

You should now be able to print out the required details!

You can use PRINT '' to print a blank separator line.

Optionally, save your query as Doctor details.sql, 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.
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