按照 rownum 批量读取大量数据

string sqlSr = "select * from (select rownum rn,a.* from(select * from " + TableNameSr + " where " + TimeFieldSr + "> to_date('" + LastTimeTr + "','YYYY-MM-DD HH24:MI:SS') order by rownum) a  where ROWNUM < =" + ei.ToString() + ") where  rn >" + si.ToString();

ei 是最高值

si 是最低值