UNION ALL

Recursive CTE

Common table expressions (CTE)

Exercise #37

Database «Ships»

Union

Conventional set-theoretic operations and the SELECT statement

Summarizing data using ROLLUP

Getting summarizing values

Exercise #54

Database «Ships»

Exercise #56

Database «Ships»

Exercise #32

Database «Ships»

Exercise #37 (tips and solutions)

Tips and solutions

Exercise #57 (tips and solutions)

Tips and solutions