SQL执行时报错，日期条件因该如何给才合适

SQL执行时报错，日期条件因该怎么给才合适？
LogCommand-> CommandText   =   "delete   from   CADLOGS   where   日期时间   <   # "   +   (Now().CurrentDate()   -   SaveDayRadices).FormatString( "yyyy-mm-dd   HH:mm:ss ")   +   "# ";
LogCommand-> Execute();
执行时报错，日期条件因该怎么给才合适？




[解决办法]
LogCommand-> CommandText = "delete from CADLOGS where 日期时间 < :D ";
LogCommand-> Parameters-> ParamByName( "D ")-> Value=Now().CurrentDate() - SaveDayRadices;
LogCommand-> Execute();