How Can I Update the Same MySQL Table After an INSERT Using a Trigger?

MySQL - Trigger for Updating Same Table After Insert

Within the realm of database management, encountering scenarios where an action on a table requires subsequent updates to the same table is not uncommon. In this particular instance, the challenge lies in achieving this within a trigger.

Consider the case of the ACCOUNTS table, where upon inserting a new row, a corresponding update is necessary to another row whose primary key matches the value of NEW.edit_on. However, as the documentation states, modifying a table that is already being used within the invoking statement is prohibited within a trigger.

To overcome this limitation, it is suggested to utilize a stored procedure. This stored procedure would first insert into or update the target table and subsequently update the additional row, all within the context of a transaction. By manually committing the changes, both actions can be executed successfully.

While the intricacies of creating such a stored procedure may vary depending on the specific database system, refer to the provided example for a more detailed understanding. This approach effectively circumvents the limitations imposed by triggers and allows for complex table manipulation scenarios to be realized.

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