Question

Query:

select machinename, StatusCode, size
from machine where MachineID In( '33','22') and StatusCode = 166 
ORDER BY size DESC 

Result:

machinename  StatusCode  size
-----------  ----------  ----
test1        166         50
test1        166         25
test2        166         75
test2        166         48

Requirement:

I need to display only one entry for each machine.
I have to do this by taking the max size value between the two entries as shown above.
like for test1 i have two sizes 50 and 25 I have to show the row which has 50 and ignore row which has 25.

Thanks

Desired Result:

machinename  StatusCode  size
-----------  ----------  ----
test1        166         50
test2        166         75

Answer 1

This will work, but you won’t be able to order by starttime

select machinename, StatusCode, max(size) as size
from machine where MachineID In( '33','22') and StatusCode = 166 
group by machinename, StatusCode
order by max(size) DESC