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Top Forums Shell Programming and Scripting Help with comparing columns from a csv file Post 302235120 by sickboy on Thursday 11th of September 2008 07:57:40 AM
Old 09-11-2008
Help with comparing columns from a csv file

Hi there,

I have an csv file.
I want to compare the 16th and 18th columns. They contain alpha numeric characters. Some are same and some are different. We have to pick the ones which are different. But with certain rules.

Code:
16th col.                       18th col.
----------                     ----------
AF640D                         AF640A    
AF060                           AF060      
AF6238                         AF6428     
AF976                           AF976      
AF1623                         AF1624
AF676M                         AF338D 
AF456                           AF454

From the given table the 16th column shows AF640D and the 18th one shows AF640A
They both are same(Taking in to account only the first 2 characters(AF) and the following numbers. But neglecting the last character (Eg. D and A).


I want to create a new csv file only with those rows that the 16th and 18th columns are different cosidering the above rule and generate new file.

So the new file should contain the rows from the above example like the following. (Here below is only the 16th and 18th column but it should contain every column)

Code:
AF6238                     AF6428
AF676M                     AF338D
AF456                       AF454
AF1623                     AF1624

I guess the easiest would be with awk but I don't have the knowledge to write this.

Can somebody help?

Thanks in advance
 

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Table(3)						User Contributed Perl Documentation						  Table(3)

NAME
Tk::Table - Scrollable 2 dimensional table of Tk widgets SYNOPSIS
use Tk::Table; $table = $parent->Table(-rows => number, -columns => number, -scrollbars => anchor, -fixedrows => number, -fixedcolumns => number, -takefocus => boolean); $widget = $table->Button(...); $old = $table->put($row,$col,$widget); $old = $table->put($row,$col,"Text"); # simple Label $widget = $table->get($row,$col); $cols = $table->totalColumns; $rows = $table->totalRows; $table->see($widget); $table->see($row,$col); ($row,$col) = $table->Posn($widget); DESCRIPTION
Tk::Table is an all-perl widget/geometry manager which allows a two dimensional table of arbitary perl/Tk widgets to be displayed. Entries in the Table are simply ordinary perl/Tk widgets. They should be created with the Table as their parent. Widgets are positioned in the table using: $table->put($row,$col,$widget) If $widget is not a reference it is treated as a string, and a Lable widget is created with the string as its text. All the widgets in each column are set to the same width - the requested width of the widest widget in the column. Likewise, all the widgets in each row are set to the same height - the requested height of the tallest widget in the column. A number of rows and/or columns can be marked as 'fixed' - and so can serve as 'headings' for the remainder the rows which are scrollable. The requested size of the table as a whole is such that the number of rows specified by -rows (default 10), and number of columns specified by -columns (default 10) can be displayed. If the Table is told it can take the keyboard focus then cursor and scroll keys scroll the displayed widgets. The Table will create and manage its own scrollbars if requested via -scrollbars. The table can be emptied using $table->clear the widgets which were in the table are destroyed. The Tk::Table widget is derived from a Tk::Frame, so inherits all its configure options. BUGS
/ Snags / Possible enhancements o Very large Tables consume a lot of X windows. o No equivalent of pack's -anchor/-pad etc. options SEE ALSO
Tk::grid, Tk::HList, Tk::TableMatrix, Tk::MListbox, Tk::Columns perl v5.12.1 2007-11-08 Table(3)
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