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Replace null values in csv with zero

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# 1  
Old 09-02-2015
Replace null values in csv with zero
Hi,

i have another issue:

i have three files:

FILE 1
Code:
ServiceEventHandler,
Processed,Percentage
5285337,100%

FILE 2
Code:
Wallet,
Processed,Percentage
5285337,100%

FILE 3
Code:
TIME
< 1m
> 1m - 2m
> 2m - 3m
> 3m - 5m
> 5m - 10m
> 10m - 15m
> 15m - 20m
> 20m - 30m
> 30m

i used this code to join all the files

Code:
paste -d',' file3 file1 file2 > file4.csv

please see output i get

Code:
,ServiceEventHandler,,WalletHandler,
,Processed,Percentage,Processed,Percentage
TIME,2839390,100%,39211657,100%
< 1m,,
> 1m - 2m,,
> 2m - 3m,,
> 3m - 5m,,
> 5m - 10m,,
> 10m - 15m,,
> 15m - 20m,,
> 20m - 30m,,
> 30m,,

My desired output is shown below:

Code:
,ServiceEventHandler,,WalletHandler,
TIME,Processed,Percentage,Processed,Percentage
< 1m,2839390,100%,39211657,100%
> 1m - 2m,0,0,0,0
> 2m - 3m,0,0,0,0
> 3m - 5m,0,0,0,0
> 5m - 10m,0,0,0,0
> 10m - 15m,0,0,0,0
> 15m - 20m,0,0,0,0
> 20m - 30m,0,0,0,0
> 30m,0,0,0,0
TOTAL,2839390,100%,39211657,100%

Note: the total should be the sum of fields in Processed and Percentage

Please help. need it badly

Thanks
# 2  
Old 09-02-2015
This is a very rudimentary approach, no bells, no whistles, no error checking, some function(s) might have been defined and used, taking advantage of awk's default behaviour where possible, but for the samples given it (almost) yields the (what I think is the) desired result (the desired result posted can't possibly have been generated with your sample input!). Try
Code:
awk '
NR==1   {getline L1 < F1
         getline L2 < F2
         print "", L1, L2
        }
        {getline L1 < F1
         split (L1, T)
         SUM1 += T[1]
         PRC1 += T[2]
         getline L2 < F2
         split (L2, T)
         SUM2 += T[1]
         PRC2 += T[2]

         print $0, L1, L2
         L1=L2="0,0"
        }

END     {print "TOTAL", SUM1, PRC1 "%", SUM2, PRC2 "%"}
' FS="," OFS="," F1="file1" F2="file2" file3
,ServiceEventHandler,,Wallet,
TIME,Processed,Percentage,Processed,Percentage
< 1m,5285337,100%,5285337,100%
> 1m - 2m,0,0,0,0
> 2m - 3m,0,0,0,0
> 3m - 5m,0,0,0,0
> 5m - 10m,0,0,0,0
> 10m - 15m,0,0,0,0
> 15m - 20m,0,0,0,0
> 20m - 30m,0,0,0,0
> 30m,0,0,0,0
TOTAL,5285337,100%,5285337,100%

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