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MySQL CREATE PROCEDURE: Creates A Stored Procedure

In MySQL, a stored procedure is a prepared SQL code that you can save, allowing the code to be reused over and over again. So if you have an SQL query that you write over and over again, save it as a stored procedure, and then just call it to execute it.

Here's a basic tutorial on how to create a stored procedure in MySQL:

Connect to the MySQL Database Server:
You can use the MySQL Command-Line Client, MySQL Workbench, or any other MySQL client to connect to your MySQL server.
Create a New Stored Procedure:
You use the CREATE PROCEDURE statement to create a new stored procedure. Here's the basic syntax:
```
CREATE PROCEDURE procedure_name()
BEGIN
    sql_statement;
END;
```
Replace procedure_name with the name you want to give to the procedure, and replace sql_statement with the SQL code that you want the procedure to execute.
For example, if you want to create a procedure that selects all records from a table named employees, you could use the following command:
```
DELIMITER $$

CREATE PROCEDURE SelectAllEmployees()
BEGIN
    SELECT * FROM employees;
END $$

DELIMITER ;
```
The DELIMITER command is used to tell MySQL that the following commands should be treated as a single command, rather than being executed one by one.
Call the Stored Procedure:
Once you have created a stored procedure, you can call it using the CALL statement:
```
CALL procedure_name();
```
For example, to call the SelectAllEmployees procedure that we created earlier, you would use:
```
CALL SelectAllEmployees();
```
This will execute the SQL code contained in the procedure.

Remember, stored procedures can also take parameters and can be more complex than this. This is just a basic example to get you started. For more information, refer to the MySQL documentation.

Creating stored procedures in MySQL:
- To create a stored procedure in MySQL, use the CREATE PROCEDURE statement followed by the procedure name, parameters (if any), and the SQL statements within the procedure.
```
DELIMITER //
CREATE PROCEDURE my_procedure()
BEGIN
    -- SQL statements
    SELECT * FROM my_table;
END //
DELIMITER ;
```
How to use CREATE PROCEDURE in MySQL:
- Use the CREATE PROCEDURE statement in MySQL to define a new stored procedure. Specify the procedure name, parameters, and the SQL statements within the procedure.
```
DELIMITER //
CREATE PROCEDURE my_procedure(param1 INT)
BEGIN
    -- SQL statements using the parameter
    SELECT * FROM my_table WHERE column1 = param1;
END //
DELIMITER ;
```

MySQL stored procedure example:

An example of a simple MySQL stored procedure that selects data from a table.

DELIMITER //
CREATE PROCEDURE select_data()
BEGIN
    -- SQL statements
    SELECT * FROM my_table;
END //
DELIMITER ;

Defining stored procedures with MySQL:
- Defining stored procedures in MySQL involves using the CREATE PROCEDURE statement to declare the procedure name, parameters (if any), and the SQL statements within the procedure.
```
DELIMITER //
CREATE PROCEDURE my_procedure(param1 INT, param2 VARCHAR(255))
BEGIN
    -- SQL statements using parameters
    SELECT * FROM my_table WHERE column1 = param1 AND column2 = param2;
END //
DELIMITER ;
```

Creating and managing procedures in MySQL:

Creating and managing procedures in MySQL involves using the CREATE PROCEDURE statement to define procedures and DROP PROCEDURE to remove them.

-- Creating a procedure
DELIMITER //
CREATE PROCEDURE my_procedure()
BEGIN
    -- SQL statements
    SELECT * FROM my_table;
END //
DELIMITER ;

-- Dropping a procedure
DROP PROCEDURE IF EXISTS my_procedure;

Using parameters in MySQL stored procedures:
- MySQL stored procedures can accept parameters, allowing for dynamic input. Parameters are specified in the CREATE PROCEDURE statement and used in the SQL statements within the procedure.
```
DELIMITER //
CREATE PROCEDURE search_by_name(IN search_name VARCHAR(255))
BEGIN
    -- SQL statements using the parameter
    SELECT * FROM my_table WHERE name = search_name;
END //
DELIMITER ;
```

Executing and testing MySQL stored procedures:

Execute and test MySQL stored procedures using the CALL statement.

-- Execute the procedure
CALL my_procedure();

-- Test procedure with parameters
CALL search_by_name('John');