Hi, hopefully someone might be able to help as I've been searching all night for a solution to this, and am running out of time.

I have to convert this date field (or add another field) to the day of year (DOY). It is currently in d-mmm-yyyy.

By Day of year, I mean 1st January 2013 would be 1. 2nd January would be 2.

Here is a snippet of my very large (7,000,000 row table) 

Date,GridID,new_l,O_Count,B_Count,E_Count,P_Count,C_Count,O_Y,B_Y,E_Y,
+P_Y,C_Y,DayRain,Antecedent20RainSum,Antecedent10RainSum,Antecedent05R
+ainSum,Antecedent02RainSum
1-Apr-2012,615265,2.4,0,0,0,0,0,0,0,0,0,0,0.00,0.00,0.00,0.00,0.00
2-Apr-2012,615265,2.4,0,0,0,0,0,0,0,0,0,0,0.00,0.00,0.00,0.00,0.00
3-Apr-2012,615265,2.4,0,0,0,0,0,0,0,0,0,0,11.60,11.60,11.60,11.60,11.6
+0

[download]
many, many thanks

Tim

In reply to d-mmm-yyyy to DOY (day of year) by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.