[CP] Json bugfix: json column length and create view with json

src/sql/engine/expr/ob_expr_json_remove.cpp

@@ -49,6 +49,7 @@ int ObExprJsonRemove::calc_result_typeN(ObExprResType& type,
     }
   }
   type.set_json();
+  type.set_length((ObAccuracy::DDL_DEFAULT_ACCURACY[ObJsonType]).get_length());
   return ret;
 }