How to use Cursor FOR Loops In SQL
Cursor FOR Loops simplify the process of fetching data from a cursor by automatically handling opening, fetching, and closing operations. The syntax for a Cursor FOR Loop is illustrated as follows:
BEGIN
FOR emp_rec IN (SELECT employee_name FROM employees WHERE department_id = 102) LOOP
DBMS_OUTPUT.PUT_LINE('Employee Name: ' || emp_rec.employee_name);
END LOOP;
END;
Output:
Explanation: The Cursor FOR Loop displays the ’employee_name’ from the ’employees’ table for the ‘Finance’ department.
How to Retrieve Data From Multiple Tables Using PL/SQL Cursors
In database programming, the ability to retrieve data from multiple tables is essential for building robust and efficient applications. PL/SQL Cursors is a powerful feature that enables developers to navigate through result sets and make them the best option for querying data from multiple tables.
In this article, We will understand the use of PL/SQL Cursors to retrieve data from multiple tables by understanding the various methods along with the examples and so on.