Question

I have this table:

id | day | count
----------------
 u   tue   1
 u   wed   4
 w   wed   5
 x   mon   5
 y   mon   5
 x   tue   2

I want to return the rows with the highest count on each day.
So I want to get this table:

id | day | count
----------------
 w   wed   5
 x   mon   5
 y   mon   5
 x   tue   2

Here’s my sql, but it’s not giving me the right output:

select id, day, MAX(count)
from Table
group by day

It is giving me:

id | day | count
----------------
 w   wed   5
 y   mon   5
 x   tue   2

Answer 1

you can use a sub-query:

select * from table 
  join (select day,max(count) as count from table group by day) as max_rec
    on table.day = max_rec.day and table.count = max_rec.count

sqlFiddle