Match files based on either of the two columns awk


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Match files based on either of the two columns awk
# 8  
Old 06-28-2013
Sort the files by the keys and use 'join'.
# 9  
Old 06-28-2013
sorry DGPickett, I tried such a way also but as sometimes I have to match with 2nd col (see the last example) also, it getts messed Smilie
# 10  
Old 06-29-2013
Code:
awk 'NR==FNR {k[$1]+=$2; next} ($1 in k) {print $0,k[$1]; next} ($2 in k) {print $0,k[$2]}' file1 file2

Three implicit if clauses, followed by {action} where each action ends with a jump to the next cycle.
This User Gave Thanks to MadeInGermany For This Post:
# 11  
Old 06-30-2013
Thank you very much MadeInGermany. thanks for figuring out my error. its a great help Smilie
# 12  
Old 07-01-2013
Is that second column match always there? Join only takes one, so you need to preprocess them into one field, or postprocess out the second field mismatches. For that much trouble, you might want to store one in an associative array and then match it with the other, which can be done in bash or awk.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Data match 2 files based on first 2 columns matching only and join if match

Hi, i have 2 files , the data i need to match is in masterfile and i need to pull out column 3 from master if column 1 and 2 match and output entire row to new file I have tried with join and awk and i keep getting blank outputs or same file is there an easier way than what i am... (4 Replies)
Discussion started by: axis88
4 Replies

2. Shell Programming and Scripting

awk to create subdirectory based on match between two files

In the below awk I am trying to mkdir based of an exact match between file2 line starting with R_2019.... and file1 line starting with R_2019. When a match is found there is a folder located at /home/cmccabe/run with the same name as the match where each $2 in file1 is a new subdirectory in that... (2 Replies)
Discussion started by: cmccabe
2 Replies

3. Shell Programming and Scripting

Comparing two columns in two files and printing a third based on a match

Hello all, First post here. I did not notice a previous post to help me down the right path. I am looking to compare a column in a CSV file against another file (which is not a column match one for one) but more or less when a match is made, I would like to append a third column that contains a... (17 Replies)
Discussion started by: dis0wned
17 Replies

4. Shell Programming and Scripting

awk to update file based on partial match in field1 and exact match in field2

I am trying to create a cronjob that will run on startup that will look at a list.txt file to see if there is a later version of a database using database.txt as the source. The matching lines are written to output. $1 in database.txt will be in list.txt as a partial match. $2 of database.txt... (2 Replies)
Discussion started by: cmccabe
2 Replies

5. Shell Programming and Scripting

New files based off match or no match

Trying to match $2 in original_targets with $2 of new_targets . If the two numbers match exactly then a match.txt file is outputted using the information in the new_targets in the beginning 4 fields $1, $2, $3, $4 and value of $4 in the original_targets . If there is "No Match" then a no... (2 Replies)
Discussion started by: cmccabe
2 Replies

6. UNIX for Advanced & Expert Users

Match and print based on columns

HI, I have 2 different questions in this thread. Consider 2 files as input (input file have different line count ) File 1 1 1 625 56 1 12 657 34 1 9 25 45 1 2 20 54 67 3 25 35 27 4 45 73 36 5 125 56 45 File2 1 1 878 76 1 9 83 67 2 20 73 78 4 47 22 17 3 25 67 99 (4 Replies)
Discussion started by: rossi
4 Replies

7. Shell Programming and Scripting

awk script to split file into multiple files based on many columns

So I have a space delimited file that I'd like to split into multiple files based on multiple column values. This is what my data looks like 1bc9A02 1 10 1000 FTDLNLVQALRQFLWSFRLPGEAQKIDRMMEAFAQRYCQCNNGVFQSTDTCYVLSFAIIMLNTSLHNPNVKDKPTVERFIAMNRGINDGGDLPEELLRNLYESIKNEPFKIPELEHHHHHH 1ku1A02 1 10... (9 Replies)
Discussion started by: viored
9 Replies

8. Shell Programming and Scripting

match two key columns in two files and print output (awk)

I have two files... file1 and file2. Where columns 1 and 2 of file1 match columns 1 and 2 of file2 I want to create a new file that is all file1 + columns 3 and 4 of file2 :b: Many thanks if you know how to do this.... :b: file1 31-101 106 0 92 31-101 106 29 ... (2 Replies)
Discussion started by: pelhabuan
2 Replies

9. Shell Programming and Scripting

match columns using awk

Hi All, I need some help in writing a small script using Awk. My input file has following deatils A,B,C,D 8239359,8239359,8388125,8388125 8239359,8239359,8388125,8388125 7165981,7165981,8363138,8363138 8283830,8283830,8382987,8382987 8209964,8209964,8367098,8367098 ... (8 Replies)
Discussion started by: pistachio
8 Replies

10. Shell Programming and Scripting

awk 3 files to one based on multiple columns

Hi all, I have three files, one is a navigation file, one is a depth file and one is a file containing the measured field of gravity. The formats of the files are; navigation file: 2006 320 17 39 0 0 *nav 21.31542 -157.887 2006 320 17 39 10 0 *nav 21.31542 -157.887 2006 320 17 39 20 0... (2 Replies)
Discussion started by: andrealphus
2 Replies
Login or Register to Ask a Question