SQL 查询中位数，并保留四位小数

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;

SQL 查询中位数，并保留四位小数

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