How do you execute a stored procedure from a trigger in MySQL?
MySQL allows you to call a stored procedure from a trigger by using the CALL statement. By doing this, you can reuse the same stored procedure in several triggers. However, the trigger cannot call a stored procedure that has OUT or INOUT parameters or a stored procedure that uses dynamic SQL.
How are stored procedures implemented in MySQL?
Create a simple stored procedure. DELIMITER ; To create the MySQL Stored Procedure, open the MySQL workbench Connect to the MySQL Database copy-paste the code in the query editor window click on Execute. You can view the procedure under stored procedures.
What are the procedure and triggers?
Difference between Triggers and Procedures :
| Triggers | Procedures |
|---|---|
| A Trigger is implicitly invoked whenever any event such as INSERT, DELETE, UPDATE occurs in a TABLE. | A Procedure is explicitly called by user/application using statements or commands such as exec, EXECUTE, or simply procedure_name |
How to call a stored procedure from a trigger in MySQL?
Summary: in this tutorial, you will learn how to call a stored procedure from a trigger in MySQL. MySQL allows you to call a stored procedure from a trigger by using the CALL statement. By doing this, you can reuse the same stored procedure in several triggers.
Can a trigger be run before or after a stored procedure?
The trigger action can be run before or after the triggering event. Triggers are similar to stored procedures but differ in the way that they are invoked. Support for triggers in MySQL is only included beginning with release 5.0.2.
How is the effect of a stored routine or trigger?
The effect of a stored routine or trigger upon the value of LAST_INSERT_ID () that is seen by following statements depends on the kind of routine: If a stored procedure executes statements that change the value of LAST_INSERT_ID (), the changed value is seen by statements that follow the procedure call.
How are stored procedures and functions similar in MySQL?
MySQL and Oracle both use stored procedures and functions. Stored functions are similar to procedures, except that a function returns a value to the environment in which it is called. In MySQL, stored procedures and functions are collectively called routines. The following sections compare stored procedures in MySQL and Oracle: