sql,按照时间排序,取前N条
作者:互联网
mysql: SELECT * from (SELECT H_TEMPERATURE,TH_TIME FROM wenshidu WHERE TH_TIME <= STR_TO_DATE('2016-03-16 10:04:52','%Y-%m-%d %H:%i:%s') order by TH_TIME desc) as total limit 0,8; oracle: SELECT * from (SELECT H_HUMIDITY FROM HOME_MONITOR WHERE H_TIME <= to_date( ' 2016-03-01 10:04:52 ' ,'yyyy-MM-dd HH24:mi:ss') order by H_TIME desc ) where rownum<=8;
标签:TEMPERATURE,sql,取前,TH,TIME,排序,SELECT 来源: https://www.cnblogs.com/dk1024/p/11057720.html