Select distinct id from tm_templates a, tm_templates_to_categories b where a.visible=1 and a.id = b.template_id and (a.keywords like '%booking %' OR a.description like '%booking%') and adult=0 order by id desc limit -20,20
You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '-20,20' at line 1