Oracle - Use an Explicit Cursor without OPEN Statements in Oracle

Use an Explicit Cursor without OPEN Statements in Oracle

Q

How To Use an Explicit Cursor without OPEN Statements in Oracle?

✍: FYIcenter.com

A

If you want to open a cursor and loop through its data rows in quick way, you can use the FOR ... IN ... LOOP statement in the same way as the implicit cursor. The following tutorial exercise gives you a good example:

CREATE OR REPLACE PROCEDURE FYI_CENTER AS
  CURSOR emp_cur IS SELECT * FROM employees
    WHERE manager_id = 101;
BEGIN
  FOR row IN emp_cur LOOP
    DBMS_OUTPUT.PUT_LINE('Name = ' || 
      row.first_name || ' ' || row.last_name); 
  END LOOP; 
END;
/
Name = Nancy Greenberg
Name = Jennifer Whalen
Name = Susan Mavris
Name = Hermann Baer
Name = Shelley Higgins

⇒Working with Cursors in Oracle PL/SQL

⇒⇒Oracle Database Tutorials

2018-04-07, 629👍, 0💬

Retrieve Data from a Cursor to a RECORD in Oracle
How To Retrieve Data from a Cursor to a RECORD in Oracle? If you have a cursor opened ready to use, you can also use the FETCH statement to retrieve data from the cursor into a RECORD variable as shown in the tutorial exercise below: CREATE OR REPLACE PROCEDURE FYI_CENTER AS CURSOR t_list IS SELECT ... 2018-07-22, 618👍, 0💬

Use FETCH Statement in a Loop in Oracle
How To Use FETCH Statement in a Loop in Oracle? If you have a cursor opened ready to use, you can also use the FETCH statement in a loop to retrieve data from the cursor more efficiently. But you need to remember to use an EXIT statement break the loop when the cursor pointer reaches the end. The sc... 2018-04-07, 598👍, 0💬

Open Multiple Cursors at the Same Time in Oracle
Can Multiple Cursors Being Opened at the Same Time in Oracle? Yes, multiple cursors can be opened at the same time. See the following example: CREATE OR REPLACE PROCEDURE FYI_CENTER AS CURSOR emp_cur IS SELECT * FROM employees; emp_rec employees%ROWTYPE; CURSOR dpt_cur IS SELECT * FROM departments; ... 2018-04-07, 591👍, 0💬

Pass a Parameter to a Cursor in Oracle
How To Pass a Parameter to a Cursor in Oracle? When you define a cursor, you can set a formal parameter in the cursor. The formal parameter will be replaced by an actual parameter in the OPEN cursor statement. Here is a good example of a cursor with two parameters: CREATE OR REPLACE PROCEDURE FYI_CE... 2018-07-18, 516👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.