Changed the returned value in case of failure on the update rank query in LeRelation

DataSource/MySQL/leapidatasource.py

@@ -409,7 +409,6 @@ class LeDataSourceSQL(DummyDatasource):
     # @param id_relation int: relation ID
     # @param rank int|str|tuple : 'first', 'last', an integer value or a (operator, value) tuple (for the shifting)
     # @throw leapi.leapi.LeObjectQueryError if id_relation doesn't exist
-    # @throw RuntimeError if the query failed
     #
     # TODO Conserver cette méthode dans le datasource du fait des requêtes SQL. Elle est appelée par le set_rank de LeRelation
     def update_rank(self, id_relation, rank):
@@ -447,7 +446,7 @@ class LeDataSourceSQL(DummyDatasource):
         sql = insert(MySQL.relations_table_name, columns=(MySQL.relations_pkname, 'rank'), values=rdatas, on_duplicate_key_update={'rank', mosql.util.raw('VALUES(`rank`)')})
         with self.connection as cur:
             if cur.execute(sql) != 1:
-                raise RuntimeError("Unknow SQL error")
+                return False
             else:
                 return True