Database management

I will send the picture of the ER diagram for reference, to come up with the queries.!

Use MySQL Server and MySQL Workbench to write/run the SQL queries below. For
each query, provide the following in Report 2:  

 In about 2 lines, explain what the query returns. 

Queries: 

 1 trivial query. Simple select with ordering.
 2 medium difficulty queries. Queries that use composite condition for selection,
computations, aggregate function and grouping.  
 1 query that uses subquery.
 2 queries that uses join (1 inner join, 1 left or right outer join).
 1 view (query must use join – hint: you can use one of the queries from the
previous question).
 1 query that uses union.
 1 custom stored function.
 1 custom stored procedure.