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Software ==>	Postgres SQL (35 exercises)
Topic ==>	Aggregation and grouping (3 exercises)
Level ==>	Relatively easy
Subject ==>	PostgreSQL training

Calculate and show various aggregated values for a list of music artists using GROUP BY

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.

If you don't have a copy of the music_01 database, first follow the instructions at the following link to create it: https://www.wiseowl.co.uk/postgres/exercises/postgres-sql/using-postgres/5350/

Write a query to return the Artist_type column from the Artist table.

List of artist typs

Not a very interesting query so far!

Add a GROUP BY clause to the query to group the artist types together and run the query again to see a much shorter list of results:

Distinct artist types

You should now only see the distinct values of the artist types.

Remember that Sweaty Feet Will Give Horrible Odours!

Add an extra column to the query which uses the COUNT function to find out how many artists of each type there are. You can count the values in any named column, or use the * to count the number of rows.

Types with number of artists

There are more solo artists than bands, it transpires.

Save the script as One is fun.sql and then close it.

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