/explore/tile join Accession only when required

src/main/java/org/genesys2/server/service/impl/GenesysFilterServiceImpl.java

@@ -284,7 +284,11 @@ public class GenesysFilterServiceImpl implements GenesysFilterService {
 
 		final DirectMysqlQuery directQuery = new DirectMysqlQuery("accessiongeo", "geo");
 		directQuery.filterTile(zoom, xtile, ytile);
-		directQuery.innerJoin("accession", "a", "a.id=geo.accessionId");
+
+		if (!filters.isEmpty() || !distinct) {
+			// Join accession table when we have filters or looking at details
+			directQuery.innerJoin("accession", "a", "a.id=geo.accessionId");
+		}
 
 		if (!filters.isEmpty()) {
 			directQuery.join(filters);