Throughout this book some exercises made use of tables not part of the STUDENT schema diagram listed in Appendix D, “STUDENT Schema Diagram.” These additional tables can be created in your STUDENT schema by downloading the script sql_book_add_tables.sql from the companion Web site located at: http://authors.phptr.com/rischert3e. The purpose of these additional tables is to illustrate SQL concepts that could otherwise not be shown within the available data and datatypes in the STUDENT schema.
Table . GRADE_SUMMARY: Shows the use of the COALESCE function
The unique ID for a ...