WordPress database error: [You have an error in your SQL syntax

Hi All,

I have just migrated my site from one host to another all seems to be fine apart from one issue which is an error that is occurring on one of my pages.

This is the full error:

WordPress database error: [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 ” at line 1]
SELECT * FROM rs_order_header WHERE order_header_id =

I can’t see anything wrong with my PHP file attached to the page as it is exactly the same as the old site that works fine.

Something to do with the new database? Can someone point me in the right direction?

Thanks,

Maxine