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Joining files using awk not extracting all columns from File 2

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Top Forums Shell Programming and Scripting Joining files using awk not extracting all columns from File 2
# 8  
Old 04-08-2016
Hi rdrtx1/Ravinder,

Do you mind suggesting the same code for the files with delimiter ",". I tried using the below ,but didn't work

Code:
 awk 'BEGIN { FS = ","} NR==FNR{l=$1; $1=""; A[l]=$0;next}{print$0 (A[$1]?A[$1]:FS "missing")}' file2 file1

Below are the files:

File1

Code:
1,AA
2,BB
3,CC
4,DD

File 2

Code:
1,IND,100,200,300
2,AUS,400,500,600
5,USA,700,800,900

# 9  
Old 04-08-2016
Hello venkat_reddy,

You could fix that(mentioning code showed by you in your very recent post one.) by doing as follows.
Code:
awk 'BEGIN { FS = OFS = ","} NR==FNR{l=$1; $1=""; A[l]=$0;next}{print $0 (A[$1]?A[$1]:FS "missing")}' file2 file1

Above code will give following output.
Code:
1,AA,IND,100,200,300
2,BB,AUS,400,500,600
3,CC,missing
4,DD,missing

But as per your very first post you needed output in different format, so following may help you in case you need it.
Code:
awk 'BEGIN { FS = OFS = ","} NR==FNR{l=$1; $1=""; A[l]=$2;next}{print $0 FS (A[$1]?A[$1]:"missing")}' file2 file1

Output will be as follows.
Code:
1,AA,IND
2,BB,AUS
3,CC,missing
4,DD,missing

Hope this helps, in case this doesn't fit into your requirement please post more sample Input_file with expected outputs with full details of your requirement into code tags.

Thanks,
R. Singh
# 10  
Old 04-08-2016
Hi Ravinder,

I have two files i.e. File1 and File2 with "," as delimiter. They have one column in common(First column) .

File 1

Code:
1,AAA
2,BBB
3,CCC
4,DDD

File 2

Code:
1,IND,SL,BAN
2,AUS,ENG,SA
5,USA,CAN,WI

Now I want to do a left outer join from File1 with File 2.

Below is the expected output:

Code:
1,AAA,IND,SL,BAN
2,BBB,AUS,ENG,SA
3,CCC,,,
4,DDD,,,

Apologies for my changing my requirement from the initial one.
Thanks in advance
# 11  
Old 04-08-2016
Hello venkat_reddy,

Could you please try following and let me know if this helps you.
Code:
awk 'BEGIN{FS=","} FNR==NR{A[$1]=$0;Q=NF;next} ($1 in A){print A[$1];next} !($1 in A){for(j=NF;j<=Q;j++){W=W?W" "FS:FS};print $0 W;W=""}' OFS=, file2 file1

Output will be as follows.
Code:
1,IND,SL,BAN
2,AUS,ENG,SA
3,CC, , ,
4,DD, , ,

In case you doesn't need space between commas,, then following may help you in same.
Code:
awk 'BEGIN{FS=","} FNR==NR{A[$1]=$0;Q=NF;next} ($1 in A){print A[$1];next} !($1 in A){for(j=NF;j<=Q;j++){W=W FS};print $0 W;W=""}' OFS=, file2 file1

Output will be as follows.
Code:
1,IND,SL,BAN
2,AUS,ENG,SA
3,CC,,,
4,DD,,,

Hope this helps you.

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
venkat_reddy
# 12  
Old 04-08-2016
Hi Ravinder,

That works with whatever sample files provided earlier.However when I tried the code with my actual files, it does not work though. I do see some Weird output .

File 1

Code:
1,P,PP,PPP,20160407,2016-04-07 13:55:00,2016-04-07 19:00:25
2,K,KK,KKK,20160407,2016-04-07 13:59:00,2016-04-07 19:00:25
3,C,CC,CCC,20160407,2016-04-07 23:06:30,2016-04-07 23:10:35
4,L,LL,LLL,20160407,2016-04-07 18:05:00,2016-04-08 00:30:31
5,M,MM,MMM,20160407,2016-04-08 03:08:00,2016-04-08 03:08:48
6,N,NN,NNN,20160407,2016-04-08 00:31:04,2016-04-08 00:31:04
8,O,OO,OOO,20160407,2016-04-07 21:25:00,2016-04-07 23:30:24
9,K,KK,KKK,20160407,2016-04-07 20:13:32,2016-04-07 20:32:35
10,S,SS,SSS,20160407,2016-04-07 04:00:27,2016-04-07 18:25:54
11,T,TT,TTT,20160407,2016-04-07 11:13:47,2016-04-07 18:27:05
12,R,RR,RRR,20160407,2016-04-07 03:36:24,2016-04-07 18:27:39
12,R,RR,RRR,20160407,2016-04-07 16:18:01,2016-04-07 18:27:39

File 2

Code:
1,07-APR-16 07.12.40.839372 PM,PP,1
2,07-APR-16 07.30.14.092718 PM,KK,2
3,07-APR-16 11.21.17.934001 PM,CC,3
4,08-APR-16 12.44.24.451781 AM,LL,4
5,08-APR-16 03.30.41.496570 AM,MM,13
6,08-APR-16 02.56.20.942287 AM,NN,11
7,08-APR-16 02.06.57.768181 AM,XX,6
8,08-APR-16 01.16.25.267521 AM,OO,5
10,08-APR-16 02.21.08.688799 AM,SS,7
11,08-APR-16 04.45.32.112525 AM,TT,14
12,08-APR-16 02.37.31.112826 AM,RR,9

Below is the Code I used:

Code:
awk 'BEGIN{FS=","} FNR==NR{A[$1]=$0;Q=NF;next} ($1 in A){print A[$1];next} !($1 in A){for(j=NF;j<=Q;j++){W=W FS};print $0 W;W=""}' OFS=,  file2 file1

Below is the output:

Code:
1,07-APR-16 07.12.40.839372 PM,PP,1
2,07-APR-16 07.30.14.092718 PM,KK,2
3,07-APR-16 11.21.17.934001 PM,CC,3
4,08-APR-16 12.44.24.451781 AM,LL,4
5,08-APR-16 03.30.41.496570 AM,MM,13
6,08-APR-16 02.56.20.942287 AM,NN,11
8,08-APR-16 01.16.25.267521 AM,OO,5
9,K,KK,KKK,20160407,2016-04-07 20:13:32,2016-04-07 20:32:35
10,08-APR-16 02.21.08.688799 AM,SS,7
11,08-APR-16 04.45.32.112525 AM,TT,14
12,08-APR-16 02.37.31.112826 AM,RR,9
12,08-APR-16 02.37.31.112826 AM,RR,9

Not sure whats causing this.Could be because of the duplicate values in column 1 in File 1 ?
Or is it the with the timestamp values in the data?

Please suggest
# 13  
Old 04-08-2016
Hello venkat_reddy,

You haven't told us in posts like which Input_file has more or less or equal number of fields. You could keep it same pattern(format) as actual one and hide the actual data while posting(sensitive data from Input_file). Could you please try following and let me know if this helps you. Here I am assuming your File1 will have always fields more than File2.
Code:
awk -F"," 'FNR==NR{A[$1]=$0;Q=NF;next} ($1 in A){print A[$1];next} !($1 in A){for(j=NF;j>=Q;j--){W=W FS};print $0 W;W=""}' OFS=,  File2 File1

Output will be as follows.
Code:
1,07-APR-16 07.12.40.839372 PM,PP,1
2,07-APR-16 07.30.14.092718 PM,KK,2
3,07-APR-16 11.21.17.934001 PM,CC,3
4,08-APR-16 12.44.24.451781 AM,LL,4
5,08-APR-16 03.30.41.496570 AM,MM,13
6,08-APR-16 02.56.20.942287 AM,NN,11
8,08-APR-16 01.16.25.267521 AM,OO,5
9,K,KK,KKK,20160407,2016-04-07 20:13:32,2016-04-07 20:32:35,,,,
10,08-APR-16 02.21.08.688799 AM,SS,7
11,08-APR-16 04.45.32.112525 AM,TT,14
12,08-APR-16 02.37.31.112826 AM,RR,9
12,08-APR-16 02.37.31.112826 AM,RR,9

It will print commas, number of times the difference between fields of File1 and File2(eg--> This example above it printed 4 commas, so meaning 4 fields are there in File2(in all the rows) and 7 fields in File1 so there are 3 values missing from FIle1), and this assumption has been made by your very first post. Hope this helps, in case your requirement is different, please do let us know on same then.

Thanks,
R. Singh
# 14  
Old 04-08-2016
Thanks for the response

File1 will have more columns than File2 .Both have various columns with different formats i.e CHAR,DATE,TIMESTAMP etc. Both have "," as delimitiers.

I tried the code given by you but unfortunately it is not the output I'm expecting

Below is the expected output for the same files you used above:

Code:
1,P,PP,PPP,20160407,2016-04-07 13:55:00,2016-04-07 19:00:25,07-APR-16 07.12.40.839372 PM,PP,1
2,K,KK,KKK,20160407,2016-04-07 13:59:00,2016-04-07 19:00:25,07-APR-16 07.30.14.092718 PM,KK,2
3,C,CC,CCC,20160407,2016-04-07 23:06:30,2016-04-07 23:10:35,07-APR-16 11.21.17.934001 PM,CC,3
4,L,LL,LLL,20160407,2016-04-07 18:05:00,2016-04-08 00:30:31,08-APR-16 12.44.24.451781 AM,LL,4
5,M,MM,MMM,20160407,2016-04-08 03:08:00,2016-04-08 03:08:48,08-APR-16 03.30.41.496570 AM,MM,13
6,N,NN,NNN,20160407,2016-04-08 00:31:04,2016-04-08 00:31:04,08-APR-16 02.56.20.942287 AM,NN,11
8,O,OO,OOO,20160407,2016-04-07 21:25:00,2016-04-07 23:30:24,08-APR-16 01.16.25.267521 AM,OO,5
9,K,KK,KKK,20160407,2016-04-07 20:13:32,2016-04-07 20:32:35,,,
10,S,SS,SSS,20160407,2016-04-07 04:00:27,2016-04-07 18:25:54,08-APR-16 02.21.08.688799 AM,SS,7
11,T,TT,TTT,20160407,2016-04-07 11:13:47,2016-04-07 18:27:05,08-APR-16 04.45.32.112525 AM,TT,14
12,R,RR,RRR,20160407,2016-04-07 03:36:24,2016-04-07 18:27:39,08-APR-16 02.37.31.112826 AM,RR,9
12,R,RR,RRR,20160407,2016-04-07 16:18:01,2016-04-07 18:27:39,08-APR-16 02.37.31.112826 AM,RR,9


I need all the data from File 1 along with data from File 2 on matched attribute i.e COLUMN 1 in both files(Left Outer join ). In case of non- matching attribute, I need null values for the columns being extracted in from File 2.


Hope you got my requirement.

Thanks
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