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for each different entry in column 1 extract maximum values from column 2 in unix/awk


 
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# 1  
for each different entry in column 1 extract maximum values from column 2 in unix/awk

Hello,

I have 2 columns (1st column has multiple entries but the corresponding values in the column 2 may be the same or different.) however I want to extract unique values for each entry in column 1 by assigning the max value from column 2

Code:
SDF4     -0.211654
        SDF4     0.978068
        SDF4     -0.211654
        SDF4     -0.211654
        FAM132A  -0.210704
        FAM132A  -0.210704
        FAM132A  -0.210704
        UBE2J2   -0.238536
        UBE2J2   1.9916
        UBE2J2   0.190829
        UBE2J2   -0.234892
        UBE2J2   -0.234892
        UBE2J2   0.190829
        UBE2J2   0.190829

o/p
Code:
SDF4     0.978068
FAM132A  -0.210704
UBE2J2   1.9916

Thanks,
# 2  
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