oracle hint 强制索引 /*+INDEX(TABLE INDEX_NAME)*/ 注意别名
select /*+INDEX(t IDX_SEL_ADD_DATE)*/ t.own_sys, count(1) from std_entp_login t where t.add_date > to_date('2010-12-28 00:00:00', 'yyyy-mm-dd hh24:mi:ss') and t.add_da
