SQL | Table-valued functions exercise | A multi statement table valued function to count vowels

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.

You can learn how to do this exercise if you attend one of more of the courses listed below!

Software ==> SQL  (198 exercises)
Version ==> Any version of SQL Server
Topic ==> Table-valued functions  (6 exercises)
Level ==> Harder than average
Classroom ==> Fast-track SQL  /  Advanced SQL
Online ==> Fast-track SQL  /  Advanced SQL
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.

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).

You need a minimum screen resolution of about 700 pixels width to see our exercises. This is because they contain diagrams and tables which would not be viewable easily on a mobile phone or small laptop. Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings.

Create a function which takes in a vowel and returns a table containing all of the categories, countries and continents which contain that vowel:

Table valued function returning vowels

The top 4 results when you run your function using the vowel I as input, for example.

The function will need one parameter to take in the vowel and a table variable to store the output from each separate select.

CREATE FUNCTION NameGoesHere

(@Para1 datatype)

RETURNS @TableName TABLE

(Column 1 datatype

,Column 2 datatype)

AS

BEGIN

INSERT INTO @TableName

--SELECTS GO IN HERE

INSERT INTO @TableName

--SELECTS GO IN HERE

INSERT INTO @TableName

--SELECTS GO IN HERE

RETURN

END

If you call your function once for each vowel within a SELECT statement, you could display the results for each vowel:

Vowel results

A shock result - E wasn't the most common vowel.

Optionally save this as Vowel please bob.sql and 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 0 threads Add post