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

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Software ==> SQL  (198 exercises)
Version ==> Any version of SQL Server
Topic ==> Table-valued functions  (6 exercises)
Level ==> Harder than average
Subject ==> SQL training
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  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 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.
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