That's a simple one-liner if you don't need to maintain the input ordering:

C:\test>perl -anle"$h{ $F[1] } = $_; }{ print for values %h"
1/2/2013     cgoo     nreuiheru
1/4/2013     doow    reiqrqueih
1/5/2013     hellio    ruieqrhfuepqh
1/20/2013    cgoo    3rhquh4ureyh
1/30/2013    yetil     jerqohgqrij
2/13/2013    hellio   rueqipheruh
2/14/2013    cgoo    wehrig4r74378
^Z
1/30/2013    yetil     jerqohgqrij
1/4/2013     doow    reiqrqueih
2/13/2013    hellio   rueqipheruh
2/14/2013    cgoo    wehrig4r74378

[download]

If you need to retain the ordering it is a little more complicated:

C:\test>perl -anle"$h{ $F[1] } = sprintf qq[%05u%s], $., $_; }{ print 
+substr $_, 5 for sort values %h"
1/2/2013     cgoo     nreuiheru
1/4/2013     doow    reiqrqueih
1/5/2013     hellio    ruieqrhfuepqh
1/20/2013    cgoo    3rhquh4ureyh
1/30/2013    yetil     jerqohgqrij
2/13/2013    hellio   rueqipheruh
2/14/2013    cgoo    wehrig4r74378
^Z
1/4/2013     doow    reiqrqueih
1/30/2013    yetil     jerqohgqrij
2/13/2013    hellio   rueqipheruh
2/14/2013    cgoo    wehrig4r74378

[download]
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In reply to Re: Data managing problem by BrowserUk
in thread Data managing problem by manorhce

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