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Min/max/total for selected columns based on first column as ID

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# 1  
Old 03-28-2020
I understand your idea. You have a list sorted by ID and you process one ID at a time. You assume that the file being processed is too large for the memory allocated for this. I want to note the script I proposed earlier allows you to process an unsorted list. And the limits of RAM are limited only by the system-wide but I would continue only for a sorted list...
Code:
awk '
a != $1         {if(NR!=1)print a,a2,a3,a4,a5,a6,a7,a8,a9
                 a=$1; a2=$3; a4=$5; a6=$6; a9=a8=a7=a5=a3=0
                }
a2>$3           {a2=$3}
a3<$3           {a3=$3}
a4>$5           {a4=$5}
a5<$5           {a5=$5}
a6>$6           {a6=$6}
a7<$6           {a7=$6}
                {a8+=$6; a9++}
END             {print a,a2,a3,a4,a5,a6,a7,a8,a9}
' OFS='\t' file

Last edited by nezabudka; 03-28-2020 at 08:45 AM..
This User Gave Thanks to nezabudka For This Post:
jiam912
# 2  
Old 03-28-2020
Hi nezabudka.


The codes works perfect, thanks a lot for your help. Yes, As you mentioned the list in the file are sorted by ID (column1) and we process one ID at a time
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