Oracle - Define a Cursor Variable in Oracle

Define a Cursor Variable in Oracle

Q

How To Define a Cursor Variable in Oracle?

✍: FYIcenter.com

A

To define cursor variable, you must decide which REF CURSOR data type to use. There are 3 ways to select a REF CURSOR data type:

Define your own specific REF CURSOR types using the TYPE ... RETURN statement.
Define your own generic REF CURSOR type using the TYPE ... statement.
Use the system defined REF CURSOR type: SYS_REFCURSOR.

The follwoing tutorial exercise defines 3 cursor variables in 3 different ways:

CREATE OR REPLACE PROCEDURE FYI_CENTER AS
  TYPE emp_ref IS REF CURSOR RETURN employees%ROWTYPE;
  TYPE any_ref IS REF CURSOR;
  emp_cur emp_ref;
  any_cur any_ref;
  sys_cur SYS_REFCURSOR;
BEGIN
  NULL;
END;
/

⇒Working with Cursors in Oracle PL/SQL

⇒⇒Oracle Database Tutorials

2018-07-18, 752👍, 0💬

Loop through a Cursor Variable in Oracle
How To Loop through a Cursor Variable in Oracle? Once a cursor variable is opened with a query statement, it will have the same attributes as a normal cursor and it can be used in the same way a normal cursor too. The following sample script shows you how to loop through a cursor variable: CREATE OR... 2018-07-18, 769👍, 0💬

Define a Cursor Variable in Oracle
How To Define a Cursor Variable in Oracle? To define cursor variable, you must decide which REF CURSOR data type to use. There are 3 ways to select a REF CURSOR data type: Define your own specific REF CURSOR types using the TYPE ... RETURN statement. Define your own generic REF CURSOR type using the... 2018-07-18, 753👍, 0💬

What Is a Cursor Variable in Oracle
What Is a Cursor Variable in Oracle? A cursor variable is a variable of a specific REF CURSOR data type, which is a pointer to a data structure resource connects to query statement result, similar to the CURSOR data type.. The advantage of using cursor variables is that cursor variables can be used ... 2018-04-07, 723👍, 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, 672👍, 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.