我用TADOConnection连接数据库端,TADOQuery连接数库表，，TADOQuery中sql如下语句select judgelistid from system order by judgelistid asc,用Tdatasource接好TADOQuery,在表格构件TDBgrid连接好,显示正常，但在表格中修改数据后，更新就会错示提示:project jtsgda.exe raised exception class EOleException with message '缺少或不正确的键列信息更新影响到过多的行.'process stopped. use step or run to contionue.
把CursorLocation设成clUseServer