Question

Currently when a new row is inserted into my users table I have 1 row inserted into each of these other tables respectively:

profiles
user_settings
user_activity

Currently I’m doing if from the PHP:

$query = mysql_query('INSERT INTO `users` blah blah...');

if($query) {
   mysql_query('INSERT INTO `profiles` blah blah...');
   mysql_query('INSERT INTO `user_settings` blah blah...');
   mysql_query('INSERT INTO `user_activity` blah blah...');
}

How can this be done via stored procedures? So that this work will be done by the database server and not the PHP code. Also is there any benefits to doing this from stored procedures vs from code?

Answer 1

I think what you are looking for are triggers not stored procedures. With triggers you can execute a query after or before an insert/update/delete query.

http://dev.mysql.com/doc/refman/5.1/en/create-trigger.html

Advantages: It is stored and invoked directly in the DB and I suppose it is more performant as well.

Example:

CREATE TRIGGER mytrigger AFTER INSERT ON users
   FOR EACH ROW BEGIN
      INSERT INTO `profiles` blah blah...;
      INSERT INTO `user_settings` blah blah...;
      INSERT INTO `user_activity` blah blah...;
END;