标签:val value tle count and images ima 查询 技术
列表
代码:
select distinct round(nth_value(lat_n,(select round(count(lat_n)/2) from station))
over (order by lat_n asc
RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING),4) as median_lat
from station;
标签:val value tle count and images ima 查询 技术
原文地址:http://www.cnblogs.com/Angella/p/6701544.html