how do I find median in sql (code question)
Question
I find answers below: Select round(S.LAT_N,4) mediam from station S where (select count(Lat_N) from station where Lat_N < S.LAT_N ) = (select count(Lat_N) from station where Lat_N > S.LAT_N)
I'm confused at where S come from??
1 answers
solution1
0 2021-01-21 02:48:12
S is an alias of station . The FROM clause is defining station as that alias S . With it defined this way station.{field} isn't valid, only S.{field} is.
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