MySQL Stored Procedure Beginners Tutorial #4-Variables & Parameters | Variables Detailed - Procedure

In this video we'll see:

VARIABLES AND PARAMETERS IN STORED PROCEDURE

VARIABLES DETAILED CONCEPT

declare variable_name TYpe_name default default_value;

declare book_id INT default 0;

SET book_id = value

Syntax:
===============================

DELIMITER //
CREATE PROCEDURE Procedure_Name()
BEGIN
SELECT * FROM table_name; // example
END //
DELIMITER ;

Examination of Syntax
===============================

The first command is DELIMITER // , which is not related to the stored procedure syntax.
The DELIMITER statement changes the standard delimiter which is a semicolon ( ; ) to
another.

Why do we have to change the delimiter?
== Its because we want to pass the stored procedure to the server as a whole rather than
letting mysql tool interpret each statement at a time.

Following the END keyword, we use the delimiter // to indicate the end of the stored
procedure. The last command ( DELIMITER; ) changes the delimiter back to the semicolon
(;).

The section between BEGIN and END is called the body of the stored procedure. We put
the declarative SQL statements in the body to handle business logic.

HOW CAN WE CALL STORED PROCEDURES
=======================================

Syntax: CALL stored_procedure_name(); // call

Example:
=============
DELIMITER $$

create PROCEDURE getAllBooks()

BEGIN

SELECT * from books;

END $$

DELIMITER ;

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Thanks
Online Web Tutor
Keep learning and Sharing :)

[OnlineWebTutor]

Hi guys, you should also see this. I sure you will like this theory portions as well. How can we define & use Basic Variables in MySQL Stored Procedure ? Step by Step Guide, easy to learn.

[anandgamezzz]

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