Formal Parameters and Actual Parameters in Oracle

Home > Oracle

Q

What Is the Difference between Formal Parameters and Actual Parameters in Oracle?

✍: FYIcenter.com

A

Formal parameter and actual parameter are two different terms related parameters used in the procedures and functions:

A formal parameter is a term used to refer to a parameter defined in the procedure or function declaration statement.
An actual parameter is a term used to refer to a parameter provided by the calling statement to a procedure or a function.

⇒ Parameter Modes Supported by PL/SQL in Oracle

⇐ Define Variables before Procedures and Functions in Oracle

⇑ Creating Oracle PL/SQL Procedures and Functions

⇑⇑ Oracle Database Tutorials

2018-03-18, 3411🔥, 0💬

Formal Parameters and Actual Parameters in Oracle
What Is the Difference between Formal Parameters and Actual Parameters in Oracle? Formal parameter and actual parameter are two different terms related parameters used in the procedures and functions: A formal parameter is a term used to refer to a parameter defined in the procedure or function decl... 2018-03-18, 3412🔥, 0💬

Call Procedure or Function Recursively in Oracle
Can Sub Procedure/Function Be Called Recursively in Oracle? PL/SQL allows sub procedures or functions to be called recursively. The tutorial example below shows you how to calculate factorial values with a recursive sub function: SQL> CREATE OR REPLACE PROCEDURE FACTORIAL_TEST AS 2 FUNCTION F... 2018-03-18, 3332🔥, 0💬

Define a Sub Function in Oracle
How To Define a Sub Function in Oracle? A sub function is a function defined and used inside another procedure or function. You need to define a sub function in the declaration part of the enclosing procedure or function. Sub function definition starts with the FUNCTION key word. Here is a sample sc... 2018-03-18, 3053🔥, 0💬

Run-Away Recursive Calls in Oracle
What Happens If Recursive Calls Get Out of Control in Oracle? What happens if your code has bug on recursive procedure calls, which causes an infinite number nested procedure calls? The answer is not so good. Oracle server seems to offer no protection calling stack limit. The script below shows you ... 2018-03-18, 2812🔥, 0💬

Parameter Modes Supported by PL/SQL in Oracle
What Are the Parameter Modes Supported by PL/SQL in Oracle? PL/SQL supports 3 parameter modes on procedure/function parameters: IN: This is the default mode. IN parameters allow the calling code to pass values into the procedure or function. OUT: OUT parameters allow the procedure or function to pas... 2018-10-19, 2765🔥, 0💬

Define Default Values for Formal Parameters in Oracle
How To Define Default Values for Formal Parameters in Oracle? If you have an IN parameter, you can make it as an optional parameter for the calling statement by defining the formal parameter with the DEFAULT clause. This gives you the freedom of not providing the actual parameter when calling this p... 2018-10-19, 2710🔥, 0💬

Use "OUT" Parameters in Oracle
How To Use "OUT" Parameter Properly in Oracle? Here are the rules about OUT parameters: A formal OUT parameter acts like an un-initialized variable. It must be assigned with new values before the end of the procedure or function. An actual OUT parameter must be a variable. An actual OUT parameter wi... 2018-10-19, 2705🔥, 0💬

Call a Sub Procedure in Oracle
How To Call a Sub Procedure in Oracle? To call a sub procedure, just use the sub procedure name as a statement. Here is another example of calling a sub procedure: SQL> CREATE OR REPLACE PROCEDURE WELCOME AS 2 PROCEDURE WELCOME_PRINT(S CHAR) AS 3 BEGIN 4 DBMS_OUTPUT.PUT_LINE('Welcome to ' || ... 2018-10-26, 2694🔥, 0💬

Use "IN" Parameters in Oracle
How To Use "IN" Parameter Properly in Oracle? Here are the rules about IN parameters: A formal IN parameter acts like constant. It can not be assigned with new values. An actual IN parameter can take a value or a variable. An actual IN parameter is passed by reference to the specified value or the v... 2018-10-19, 2587🔥, 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.