Perl - Create date range looking at 3 fields

Posted by cgmojoco on Stack Overflow See other posts from Stack Overflow or by cgmojoco
Published on 2010-04-29T17:51:51Z Indexed on 2010/04/29 17:57 UTC
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perl

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daterange

I have 3 Columns of data:

Item    |   CreateDate  | Version | 
ABC  |     1/1/2010  |  X      |
ABC  |     3/15/2010 |  XB     |
BBB  |     2/15/2010 |  X      |
BBB  |     6/15/2010 |  X      |

How might I populate two additional columns of data named Version Start & Version End that would calculate the start date of the version and the end date of the version for a given Item...based on the CreateDates.

Item    |   CreateDate  | Version   |   Version Start   |   Version End
ABC  |     1/1/2010  |  X        |     1/1/2010      |    3/14/2010
ABC  |     3/15/2010 |  XB       |     3/15/2010     |    (04/29/2010)Today
BBB  |     2/15/2010 |  X        |     2/15/2010     |    (04/29/2010)Today  
BBB  |     6/15/2010 |  X        |     2/15/2010     |    (04/29/2010)Today

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