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Compare three files based on two fields

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# 1  
Old 12-27-2012
Compare three files based on two fields
Guys,

I tried searching on the internet and I couldn't get the answer for this problem. I have 3 files. First 2 fields of all of them are of same type, say they come from various databases but first two fields in the 3 files means the same.

I need to verify the entries that are not present in all the 3 files.

Below are the files 1.txt, 2.txt & 3.txt respectively

Code:
2677|47876992|1|20:20:51|12/16/2012|1|1|496300|
2677|47877024|2|13:47:37|12/16/2012|1|1|008994|
2677|47877052|3|21:03:56|12/16/2012|1|1|647546|
2677|47877055|4|16:54:07|12/16/2012|1|1|133914|
2677|47877099|5|16:29:06|12/16/2012|1|1|379245|
2677|47877081|6|10:44:13|12/16/2012|1|1|014078|
2677|47877232|7|19:07:06|12/16/2012|1|1|242776|
2677|47877246|8|13:02:32|12/16/2012|1|1|623853|
2677|47877258|9|22:03:05|12/16/2012|1|1|997345|
2677|47877351|10|16:29:27|12/16/2012|1|1|792584|
 
2677|47876992|1|1|40|
2677|47877024|32|1|100|
2677|47877052|2|1|39|
2677|47877055|1|1|75|
2677|47877074|1|1|9|
2677|47877081|2|1|175|
2677|47877232|1|1|10|
2677|47877246|9|1|25|
2677|47877258|25|1|40|
2677|47877350|9|1|50|

2677|47876992|1|7000|603098|40|0|
2677|47877024|1|7000|603086|100|0|
2677|47877052|1|1700|200180|39|0|
2677|47877055|1|7000|603098|75|0|
2677|47877074|1|1700|003400|9|0|
2677|47877081|1|7000|603062|25|0|
2677|47877081|2|7000|603065|50|0|
2677|47877081|3|7000|603074|100|0|
2677|47877232|1|7000|601802|10|0|
2677|47877246|1|7000|252120|25|0|

The output should be the lines that are not in all the three files. that is like below.

Code:
2677|47877099
2677|47877258
2677|47877351
2677|47877350

It would be geat if the output has the filenames as well. Smilie Smilie like below

Code:
2677|47877099|1.txt|
2677|47877258|1.txt,2.txt|
2677|47877351|1.txt|
2677|47877350|2.txt|

# 2  
Old 12-27-2012
I'm still new to unix, but I'm pretty sure you need to AWK your results. I'll try to find an example, but if your not new to unix. I'm sure you will find it quicker than me. Much of luck, hope I was of some assistance.
# 3  
Old 12-27-2012
Code:
$ awk -F "|" 'f==1{A[$1,$2]++;B[$1,$2]=$1 FS $2 FS FILENAME}
f==2{A[$1,$2]++;B[$1,$2]=B[$1,$2]?B[$1,$2]","FILENAME:$1 FS $2 FS FILENAME}
f==3{A[$1,$2]++;B[$1,$2]=B[$1,$2]?B[$1,$2]","FILENAME:$1 FS $2 FS FILENAME}END{
for (i in A){if(A[i]<3){print B[i]"|"}}}
' f=1 file1 f=2 file2 f=3 file3

2677|47877074|file2,file3|
2677|47877258|file1,file2|
2677|47877099|file1|
2677|47877350|file2|
2677|47877351|file1|

EDIT:

Minimized it's length lit bit..Smilie using function..Smilie

Code:
awk -F "|" 'function define_arr() {
A[$1,$2]++;
B[$1,$2]=B[$1,$2]?B[$1,$2]","FILENAME:$1 FS $2 FS FILENAME
}
f==1{define_arr()}
f==2{define_arr()}
f==3{define_arr()}
END{for (i in A){if(A[i]<3){print B[i]"|"}}}' f=1 file1 f=2 file2 f=3 file3

Last edited by pamu; 12-27-2012 at 02:11 AM..
This User Gave Thanks to pamu For This Post:
sathyaonnuix
# 4  
Old 12-27-2012
pamu's suggestion could be shortened a bit further without a function:
Code:
awk -F\| '
{
  i=$1 FS $2
  A[i]++
  B[i]=(B[i]?B[i]",":i FS) FILENAME
}
END{
  for (i in A) if(A[i]<3) print B[i] FS
}' file*

But this would not count the occurrence of entries that occur multiple times in one file but not in other files. To counteract that, one could do something like this:

Code:
awk -F\| '
{
  i=$1 FS $2
}
!D[i,FILENAME]++{
  A[i]++
  B[i]=(B[i]?B[i]",":i FS) FILENAME
}
END{
  for (i in A) if(A[i]<3) print B[i] FS
}' file*

Last edited by Scrutinizer; 12-27-2012 at 05:30 AM..
# 5  
Old 12-27-2012
awk
Code:
(awk '{print $0""FILENAME}' a && awk '{print $0""FILENAME}' b && awk '{print $0""FILENAME}' c) | awk -F"[|]" '{
cnt[$1" "$2]++
file[$1" "$2]=sprintf("%s%s",file[$1" "$2],(file[$1" "$2])?","$NF:$NF)
}
END{
for (i in cnt){
  if(cnt[i] < 3){
    print i" "file[i]	
  }
}
}'

Last edited by Scrutinizer; 12-27-2012 at 05:41 AM.. Reason: code tags
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