Sample Data
DATE WindDirection
1/1/2000 SW
1/2/2000 SW
1/3/2000 SW
1/4/2000 NW
1/5/2000 NW
Question below
Every day is unqiue, and wind direction is not unique, So now we are trying to get the COUNT of the most COMMON wind direction
select w.wind_direction as most_common_wd
from (
select wind_direction, count(*) as cnt
from weather
group by wind_direction
order by cnt desc
) w
limit 1;
Currently this query works, however it outputs the count of ALL count, i am only interested in the count of each type of wind direction, it outputs south and outputs 170000 but the answer is only 10,000.
I am aware something is wrong the way count is being used, i think it have to specify an alias and do count by specfic wind_direction but i can't translate that into syntax
Looks like you want the most common wind direction from your data
select wind_direction, count(*) as cnt
from weather
group by wind_direction
order by cnt desc
limit 1;
If there are multiple wind direction with the same max count then get the max count and use it in the having clause to get the most common wind direction
select wind_direction
from weather
group by wind_direction
having count(*) = ( select max(c) from
(
select wind_direction,count(*) c
from weather
group by wind_direction
) a
)