How to fetch the maximum values of 2 columns

Hi All,
I need to fetch the maximum value of 2 columns. For example I need to fetch the latest record for which i have to fetch the latest date and time. Date and time fields are 2 different columns. As of now am doing it the crude fetching the latest date records and then fetching the latest time record.
Is there any other smarter way to do it. The one am doing rite now is turning out to be very performance intensive at the moment for me. Also I could not apply max condition for two fields together.
Please guide.
Thanks,
Nagraj

Hi Jaspreet,
Thanks for your response. But the problem am facing with this approach is I have to do this for n number of records in another internal table which is making it to cumbersome and affecting performance.
Please suggest is there any better way to do it.
Thanks,
Nagraj

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Try this, I'm not sure if it'll help... and get some idea...
try to modify it as per your requirement -
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1     ranit1
2#     ranit2
3     ranit3
4$     ranit@4
5     ranit5
6     r^anit6
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UNION
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Hi Anil,
I am trying out your code but stuck in inserting the rows
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