This MySQL Trigger video tutorial reveals the straightforward steps to create set off, drop set off, and present triggers in MySQL at phpMyAdmin. For your higher perceive we’ll reveal MySQL set off instance with a pattern desk known as “users”.
This “users” desk has “id”, “first_name”, “last_name”, and “full_name” columns. At first we’ll create a BEFORE INSERT TRIGGER for inserting “full_name” column worth when a row is inserted in “users” desk. “full_name” worth could be the mix of “first_name” and “last_name” worth.
After that, we’ll replace the “full_name” column worth as per the “first_name” and “last_name” worth when a row is up to date utilizing BEFORE UPDATE TRIGGER.
You can present all of the triggers within the database utilizing SHOW TRIGGERS assertion. Use DROP TRIGGER assertion to drops a set off.
Read tutorial from CodexWorld.com – http://www.codexworld.com/how-to-create-drop-trigger-in-mysql/
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