SetColumns 更新update List<> 集合 返回

        this.DbClient.Updateable(dataList).WhereColumns(m=> m.Id).SetColumns( m => new Sys_User

            {

                CreationTime = m.CreationTime.AddDays(1)

            }).ExecuteCommand();

变成sql 

UPDATE  `Sys_User` S    INNER JOIN             (

 SELECT '2020-03-14 15:20:35.000' AS `CreationTime`,N'1' AS `Id`

UNION ALL 

 SELECT '2020-03-14 15:20:35.000' AS `CreationTime`,N'2' AS `Id`

  ) T ON S.`Id`=T.`Id`

  SET  `CreationTime` = (DATE_ADD(`CreationTime` , INTERVAL @MethodConst1 Day))  ;

报错   正确应该是   

UPDATE  `Sys_User` S    INNER JOIN             (

 SELECT '2020-03-14 15:20:35.000' AS `CreationTime`,N'1' AS `Id`

UNION ALL 

 SELECT '2020-03-14 15:20:35.000' AS `CreationTime`,N'2' AS `Id`

  ) T ON S.`Id`=T.`Id`

  SET  S.`CreationTime` = (DATE_ADD(T.`CreationTime` , INTERVAL @MethodConst1 Day))  ;