<http://schema.org/description>
"MySQL issue with GROUP BY clause which is fixed by editing your @@SQL_MODE variable..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.andyjarrett.co.uk/2016/06/21/select-list-is-not-in-group-by-clause-and-contains-nonaggregated-column/>