need to rearrange and sum column in solaris command

Question

I have below data named atp.csv file

Date_Time,M_ID,N_ID,Status,Desc,AMount,Type
2015-01-05 00:00:00 076,1941321748,BD9010423590206,200,Transaction Successfu         


        

Answer 1

AWK has associative arrays.

% cat atp.csv | awk -F, 'NR>1 {n[$4]+=1;s[$4]+=$6;} END {for (k in n) { print k "," n[k] "," s[k]; }}' | sort
200,3,4500
351,1,5000

In the above:

1. The first line (record) is skipped with NR>1.

2. n[k] is the number of occurrences of key k (so we add 1), and s[k] is the running sum values in field 6 (so we add $6).

3. Finally, after all records are processed (END), you can iterate over associated arrays by key (for (k in n) { ... }) and print the keys and values in arrays n and s associated with the key.