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Top Forums Shell Programming and Scripting AWK script to create max value of 3rd column, grouping by first column Post 302655441 by clx on Wednesday 13th of June 2012 07:34:21 AM
Old 06-13-2012
Another try..
Code:
awk -F, 'a[$1]<$3{a[$1]=$3} END {for (i in a){print i FS a[i]}}' file | sort

 

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DB2_FIELD_WIDTH(3)							 1							DB2_FIELD_WIDTH(3)

db2_field_width - Returns the width of the current value of the indicated column in a result set

SYNOPSIS
int db2_field_width (resource $stmt, mixed $column) DESCRIPTION
Returns the width of the current value of the indicated column in a result set. This is the maximum width of the column for a fixed-length data type, or the actual width of the column for a variable-length data type. 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 an integer containing the width of the specified character or binary data type column in a result set. If the specified column does not exist in the result set, db2_field_width(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_type(3). PHP Documentation Group DB2_FIELD_WIDTH(3)
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