PL/SQL Procedure

The PL/SQL stored procedure or simply a procedure is a PL/SQL block which performs one or more specific tasks. It is just like procedures in other programming languages.

The procedure contains a header and a body.

• Header: The header contains the name of the procedure and the parameters or variables passed to the procedure.
• Body: The body contains a declaration section, execution section and exception section similar to a general PL/SQL block.

How to pass parameters in procedure:

When you want to create a procedure or function, you have to define parameters .There is three ways to pass parameters in procedure:

1. IN parameters: The IN parameter can be referenced by the procedure or function. The value of the parameter cannot be overwritten by the procedure or the function.
2. OUT parameters: The OUT parameter cannot be referenced by the procedure or function, but the value of the parameter can be overwritten by the procedure or function.
3. INOUT parameters: The INOUT parameter can be referenced by the procedure or function and the value of the parameter can be overwritten by the procedure or function.

A procedure may or may not return any value.

PL/SQL Create Procedure

Syntax for creating procedure:

Create procedure example

In this example, we are going to insert record in user table. So you need to create user table first.

Table creation:

Now write the procedure code to insert record in user table.

Procedure Code:

Output:

Procedure created.

PL/SQL program to call procedure

Let's see the code to call above created procedure.

Now, see the "USER" table, you will see one record is inserted.

PL/SQL Drop Procedure

Syntax for drop procedure

Example of drop procedure