What Is a Function in Oracle

Home > Oracle

Q

What Is a Function in Oracle?

✍: FYIcenter.com

A

A function is a named program unit. It consists of three parts:

Declaration Part - Defining the function name, calling parameters, return value type, local variables and local procedures. Declaration part is required.
Execution Part - Defining execution logic with executable statements. Execution part is required.
Exception Part - Defining error handling logics. Exception part is optional.

Here how a complete procedure should look like:

FUNCTION name (parameter_1, parameter_2) RETURN type AS
  -- Declaration statements
BEGIN
  -- Executable statements
  RETURN value;
EXCEPTION
  -- Error handling statements
END;

⇒ Define Anonymous Procedures without Variables in Oracle

⇐ What Is a Procedure in Oracle

⇑ Creating Oracle PL/SQL Procedures and Functions

⇑⇑ Oracle Database Tutorials

2018-01-27, 3098🔥, 0💬

Creating Oracle PL/SQL Procedures and Functions
Where to find answers to frequently asked questions on Creating Oracle PL/SQL Procedures and Functions? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Creating Oracle PL/SQL Procedures and Functions. It can also be used as learning tutorials on c... 2018-01-27, 3332🔥, 0💬

Create a Stored Procedure in Oracle
How To Create a Stored Procedure in Oracle? A stored procedure is a procedure with a specified name and stored into the current database. If you want to create a stored procedure, you can use the CREATE PROCEDURE statement. The example script below creates a stored procedure: SQL> CREATE PROC... 2018-11-11, 3232🔥, 0💬

What Is a Function in Oracle
What Is a Function in Oracle? A function is a named program unit. It consists of three parts: Declaration Part - Defining the function name, calling parameters, return value type, local variables and local procedures. Declaration part is required. Execution Part - Defining execution logic with execu... 2018-01-27, 3099🔥, 0💬

What Is NULL in PL/SQL in Oracle
What Is NULL in PL/SQL in Oracle? NULL is a reserved key word and it stands for two things in PL/SQL: NULL is an executable statement, and means doing nothing. NULL is a data value, and means no value. The following sample script shows you examples of using NULL keyword: DECLARE next_task CHAR(80); ... 2018-07-13, 3094🔥, 0💬

Test NULL Values in Oracle
How To Test NULL Values in Oracle? There ate two special comparison operators you can use on NULL values: "variable IS NULL" - Returns TRUE if the variable value is NULL. "variable IS NOT NULL" - Return TRUE if the variable value is not NULL. The following sample script shows you examples of compari... 2018-07-13, 3040🔥, 0💬

Execute a Stored Procedure in Oracle
How To Execute a Stored Procedure in Oracle? If you want to execute a stored procedure, you can use the EXECUTE statement. The example script below shows how to executes a stored procedure: SQL> set serveroutput on; SQL> CREATE PROCEDURE Greeting AS 2 BEGIN 3 DBMS_OUTPUT.PUT_LINE('Welc... 2018-11-11, 2931🔥, 0💬

Define Anonymous Procedures with Variables in Oracle
How To Define an Anonymous Procedure with Variables in Oracle? Anonymous procedure is a procedure without any name. If you have some variables to declare, you can define an anonymous procedure by using the DECLARE keyword in SQL*Plus as shown in the following tutorial script: SQL> set servero... 2018-01-27, 2930🔥, 0💬

Define Anonymous Procedures without Variables in Oracle
How To Define an Anonymous Procedure without Variables in Oracle? Anonymous procedure is a procedure without any name. If you don't have any variables to declare, you can define an anonymous procedure by using the BEGIN keyword directly in SQL*Plus as shown in the following tutorial script: SQL&... 2018-01-27, 2879🔥, 0💬

What Is a Procedure in Oracle
What Is a Procedure in Oracle? A procedure is a named program unit. It consists of three parts: Declaration Part - Defining the procedure name, calling parameters, local variables and local procedures. Declaration part is required. Execution Part - Defining execution logic with executable statements... 2018-01-27, 2684🔥, 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.