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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 |
Courses ==> | Fast-track SQL / Advanced SQL |
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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:

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:

A shock result - E wasn't the most common vowel.
Optionally save this as Vowel please bob.sql and close it down.