Fix database.InsertReturning

database/sql_helper.go

@@ -142,7 +142,7 @@
 		return nil
 	}
 	query := SQLInsert(instances...).
-		Suffix("RETURNING" + strings.Join(instances[0].Columns(true), ", "))
+		Suffix("RETURNING " + strings.Join(instances[0].Columns(true), ", "))
 	if len(instances) == 1 {
 		return h.Get(tgt, query)
 	}