Welcome to module 10, the UNION clause, an essential operator for combining the results of multiple SELECT queries into a single result set.

You'll learn to use UNION to merge data from different tables or queries, remove duplicates, and manipulate complex data.

Through hands-on examples and interactive demos, we'll explore scenarios where the UNION clause solves critical programming requirements, from integrating data sources to generating comprehensive reports.

As usual, each lesson includes several examples and demos, plus a homework assignment to reinforce your learning.