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Full Discussion: AWK script to create max value of 3rd column, grouping by first column
Top Forums Shell Programming and Scripting AWK script to create max value of 3rd column, grouping by first column Post 302655023 by ckmehta on Tuesday 12th of June 2012 03:33:58 PM
Old 06-12-2012
AWK script to create max value of 3rd column, grouping by first column
Hi,

I need an awk script (or whatever shell-construct) that would take data like below and get the max value of 3 column, when grouping by the 1st column.

Code:
clientname,day-of-month,max-users
-----------------------------------
client1,20120610,5
client2,20120610,2
client3,20120610,7
client4,20120610,9
client5,20120610,2
client1,20120611,8
client3,20120611,4
client4,20120611,4
client6,20120611,9

and get results like:
Code:
clientname,max-monthly-users
-----------------------------
client1,8
client2,2
client3,7
client4,9
client5,2
client6,9


The column-header lines are not required, but I thought would make example more concrete.

Thanks-In-Advance For any help!
Last edited by Scrutinizer; 06-12-2012 at 04:37 PM.. Reason: code tags
 

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LEARN ABOUT PHP

db2_field_type

DB2_FIELD_TYPE(3)							 1							 DB2_FIELD_TYPE(3)

db2_field_type - Returns the data type of the indicated column in a result set

SYNOPSIS

       string db2_field_type (resource	$stmt, mixed  $column)

DESCRIPTION

	Returns the data type of the indicated column in a result set.

PARAMETERS

	      o $stmt
		- Specifies a statement resource containing a result set.

	      o $column
		-  Specifies  the  column in the result set. This can either be an integer representing the 0-indexed position of the column, or a
		string containing the name of the column.

RETURN VALUES

	Returns a string containing the defined data type of the specified column. If the specified column does  not  exist  in  the  result  set,
       db2_field_type(3) returns FALSE.

SEE ALSO

       db2_field_display_size(3), db2_field_name(3), db2_field_num(3), db2_field_precision(3), db2_field_scale(3), db2_field_width(3).

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