How to Combine MySQL Triggers for Insert and Update Operations Using a Stored Procedure?

MySQL Fire Trigger for Both Insert and Update: Combining Triggers Through a Common Procedure

When managing data in MySQL, triggers are an invaluable tool for processing and validating events that occur on database tables. To streamline the process, it's desirable to trigger actions on both insert and update events without having to define separate triggers.

The original question seeks a solution to this challenge, expressing the desire to consolidate the triggers and reduce code repetition. While MySQL does not natively support a single trigger for both insert and update events, there is a workaround using stored procedures.

The key to combining triggers lies in creating a stored procedure that encapsulates the common actions. This procedure can then be invoked from both the insert and update triggers, effectively centralizing the logic.

Here's how to achieve this:

1. Create the Stored Procedure:

   CREATE PROCEDURE my_trigger_procedure(...)
   BEGIN
     -- Insert and update logic here
   END //

2. Create the Insert Trigger:

   CREATE TRIGGER my_insert_trigger
   AFTER INSERT ON `table`
   FOR EACH ROW
   BEGIN
     CALL my_trigger_procedure(...);
   END //

3. Create the Update Trigger:

   CREATE TRIGGER my_update_trigger
   AFTER UPDATE ON `table`
   FOR EACH ROW
   BEGIN
     CALL my_trigger_procedure(...);
   END //

In this solution, the my_trigger_procedure serves as the central script, which allows both triggers to perform the necessary actions seamlessly without repeating code.

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