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 ') IS NULL' at line 4
SELECT orderNumber, concat(c.contactFirstName, ' ', c.contactLastName) contactNameFull FROM orders o INNER JOIN customers c ON o.customerNumber = c.customerNumber WHERE () IS NULL
Error Number: 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 ') IS NULL' at line 4
SELECT orderNumber, concat(c.contactFirstName, ' ', c.contactLastName) contactNameFull FROM orders o INNER JOIN customers c ON o.customerNumber = c.customerNumber WHERE () IS NULL
Filename: libraries/Datatable.php
Line Number: 232
How to solve that?