Create trigger for adding new users to wordpress - php

Question

I need to add a users full name to the buddy press extended profile field every time a new user is created. This is normal functionality, but we are syncing users from Active Directory and when that ran users names are not being populated. I have created a SQL query that works for combining first and last name and updating it to where i need. My issue comes when trying to create a trigger in phpMyAdmin.
This is the error i receive:
The following query has failed:
CREATE TRIGGER `update users`
AFTER UPDATE ON `wp_bp_xprofile_data`
FOR EACH ROW
CREATE TEMPORARY TABLE user_data AS
SELECT u.user_id
, (SELECT meta_value FROM wp_usermeta WHERE user_id = u.user_id AND meta_key = 'first_name' LIMIT 1) AS first_name
, (SELECT meta_value FROM wp_usermeta WHERE user_id = u.user_id AND meta_key = 'last_name' LIMIT 1) AS last_name
, (SELECT `value` FROM wp_bp_xprofile_data WHERE user_id = u.user_id AND field_id = '1' LIMIT 1) AS bp_name
, (SELECT CONCAT(first_name, ' ', last_name)) AS full_name
FROM wp_bp_xprofile_data u ;
UPDATE wp_bp_xprofile_data u JOIN user_data b ON u.user_id=b.user_id
SET u.value=b.full_name;"
MySQL said: #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'UPDATE wp_bp_xprofile_data u JOIN user_data b ON u.user_id=b.user_id ' at line 12
Here is the code i used.
CREATE TEMPORARY TABLE user_data AS
SELECT
u.user_id,
(SELECT meta_value FROM wp_usermeta WHERE user_id = u.user_id AND meta_key = 'first_name' LIMIT 1) AS first_name,
(SELECT meta_value FROM wp_usermeta WHERE user_id = u.user_id AND meta_key = 'last_name' LIMIT 1) AS last_name,
(SELECT `value` FROM wp_bp_xprofile_data WHERE user_id = u.user_id AND field_id = '1' LIMIT 1) AS bp_name,
(SELECT CONCAT(first_name, ' ', last_name)) AS full_name
FROM
wp_bp_xprofile_data u
;
UPDATE wp_bp_xprofile_data u
JOIN user_data b
ON u.user_id=b.user_id
SET u.value=b.full_name;
Trigger Inputs

Answer 1

You haven't entered a BRGIN or ENd
Try
DELIMITER //
CREATE TRIGGER `update users`
AFTER UPDATE ON `wp_bp_xprofile_data`
FOR EACH ROW
BEGIN
CREATE TEMPORARY TABLE user_data AS
SELECT u.user_id
, (SELECT meta_value FROM wp_usermeta WHERE user_id = u.user_id AND meta_key = 'first_name' LIMIT 1) AS first_name
, (SELECT meta_value FROM wp_usermeta WHERE user_id = u.user_id AND meta_key = 'last_name' LIMIT 1) AS last_name
, (SELECT `value` FROM wp_bp_xprofile_data WHERE user_id = u.user_id AND field_id = '1' LIMIT 1) AS bp_name
, (SELECT CONCAT(first_name, ' ', last_name)) AS full_name
FROM wp_bp_xprofile_data u ;
UPDATE wp_bp_xprofile_data u JOIN user_data b ON u.user_id=b.user_id
SET u.value=b.full_name;
END //
DELIMITER ;
But i am not sure that trigger will even work, it only removes the syntax errors.
As far as i know, you can't update the table that invoked the Trigger, because your update would also invoke a new trigger and so on.