Oracle® PL/SQL® Interactive Workbook, Second Edition By Benjamin Rosenzweig, Elena Silvestrova
Table of Contents
In this Chapter, you will learn about:
Using Cursor FOR Loops and Nesting Cursors
Cursors are memory areas that allow you to allocate an area of memory and access the information retrieved from a SQL statement. For example, you use a cursor to operate on all the rows of the STUDENT table for those students taking a particular course (having associated entries in the ENROLLMENT table). In this chapter, you will learn to declare an explicit cursor that enables a user to process many rows returned by a query and allows the user to write code that will process each row one at a time.