What are procedures in PL SQL?

Posted on by David Darling

What are procedures in PL SQL?

A procedure is a group of PL/SQL statements that you can call by name. A call specification (sometimes called call spec) declares a Java method or a third-generation language (3GL) routine so that it can be called from SQL and PL/SQL. The call spec tells Oracle Database which Java method to invoke when a call is made.

How do I write a PL SQL program?

Text Editor

  1. Type your code in a text editor, like Notepad, Notepad+, or EditPlus, etc.
  2. Save the file with the . sql extension in the home directory.
  3. Launch the SQL*Plus command prompt from the directory where you created your PL/SQL file.
  4. Type @file_name at the SQL*Plus command prompt to execute your program.

How do you create a procedure?

Here are eight straightforward steps to do it right.

  1. Spend some time observing.
  2. Create a template.
  3. Identify your task.
  4. Have a conversation with the key players.
  5. Write it all down.
  6. Take a test run.
  7. Revise and refine.
  8. Put the procedure in play.

How do you compile a procedure?

Compile one or more procedures, using one of these methods:

  1. Use the ALTER PROCEDURE or ALTER PACKAGE command to recompile the procedure or the entire package.
  2. Drop the procedure and create it again.
  3. Use CREATE OR REPLACE to recompile the procedure.

How do you run a procedure?

Expand the database that you want, expand Programmability, and then expand Stored Procedures. Right-click the user-defined stored procedure that you want and select Execute Stored Procedure. In the Execute Procedure dialog box, specify a value for each parameter and whether it should pass a null value.

How do I run a procedure in PL SQL Developer?

Executing a PL/SQL procedure

  1. Right-click the procedure name and choose Run… menu item.
  2. Enter a value for the in_customer_id parameter and click OK button.
  3. The following shows the result.

How do you call a package in PL SQL?

You cannot execute a PL/SQL package, as it is simply a container for one or more routines (stored procedures and functions). Typically you use packages to organize various related routines. You execute (call) individual routines in a package by referencing them by their names, e.g.

What is the difference between PL SQL function and PL SQL procedure?

A function returns a value and control to calling function or code. A procedure returns the control but not any value to calling function or code. A procedure has support for try-catch blocks. A select statement can have a function call.

What is the basic structure of PL SQL?

A PL/SQL block consists of three sections: declaration, executable, and exception-handling sections. In a block, the executable section is mandatory while the declaration and exception-handling sections are optional. A PL/SQL block has a name. Functions or Procedures is an example of a named block.

What is the difference between SQL and Plsql?

SQL is data oriented language. PL/SQL is application oriented language. SQL is used to write queries, create and execute DDL and DML statments. PL/SQL is used to write program blocks, functions, procedures, triggers and packages.