There are some database and SQL tasks that, at the time of writing, did not fit into the mission of this book. The intention was to get your feet wet with SQL and not inundate you with every functionality available. But there are some topics that arguably do not fit into the core mission of this book, yet do not deserve to be omitted either. These are given mention here to help you progress in your proficiency.
This is a beginner’s book on SQL. Therefore, the scope and focus is limited to foundational topics. However, if you finished this book and are interested in expanding your database and SQL repertoire, here are some suggested topics you can explore and research:
||Append the results of two or more queries into a single result set.|
|Subqueries||Query off other queries just like they were tables.|
|Regular expressions||Use a universal syntax to match advanced text patterns easily—basically,
|Database administration||Fine-tune production ...|