MySQL Stored Procedure - UPDATE - Example

Source code to create and add sql update stored procedure to catalog

The following example is for creating a simple update stored procedure. You can run it through an explicit call from a host language program.

DROP PROCEDURE IF EXISTS `sp_students_UPDATE_byPK` 
GO

CREATE PROCEDURE sp_students_UPDATE_byPK
     (
        IN  p_student_id                   INT(11)       , 
        IN  p_active_flg                   TINYINT(4)    
     )
BEGIN 

    UPDATE students
    SET    
           active_flg  = p_active_flg                    
    WHERE  student_id = p_student_id ; 

END 

GO

It is important to note that for every column you include in the update code you will need to enter data for. Typically, an sql update stored procedure would be created for all the columns. There would be a mapping layer that moves existing data to the exposed variables. In the example provided I have created an update stored procedure that could be tied directly to a function that would activate or inactivate a student. Having an sql update stored procedure for this type of activity is wholly rational and appropriate.

Executing the sql update stored procedure

Execute sql update stored procedure

To run the stored procedure you need to supply a values to the applicable variables.

/***
   IN    p_student_id  INT(11)
   IN    p_active_flg  TINYINT(4)
***/

CALL sp_students_UPDATE_byPK
   (
        25  ,
        1    
          
   )
GO

Link to schema for Students table

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