Hi Owen 

Our apologies for the waiting time,

we will do our best to respond quicker going forward.

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The SQL feature in our plugin is not the same as if you ran the Query in a Database Management Tool.

Our logic is based on a PHP SQL parser which has full support for the SQL dialect for the following statement types

SELECT, INSERT, UPDATE, DELETE, REPLACE, RENAME, SHOW, SET, DROP, CREATE INDEX, CREATE TABLE, EXPLAIN and DESCRIBE.

Some of them are disabled for security reasons.

Filtering, sorting, and search may not work properly if you include:

• Accent graves ( ` ) around the table name
• JOIN functions
• UNION functions
• CONCAT functions
• sub-queries

To avoid these issues, you can try preparing a MySQL view (which will return the data that you need, call it e.g. “view1” and then build a wpDataTables based on a simple query like "SELECT * FROM view1″.

 If you need help with that, you can see our video, where we show an example of using View in our plugin.

Let me know if creating a View and making a new SQL Query in our plugin with that method works,

we will be here if you need further assistance.

Thank you