If file one isn't too large, then this should work
If file1 is large (i.e. it's not practical to cache it in memory), then this is one way. May not be the most efficent, but it should work. The order of the output is sorted by field1.
You could do this without the seds, and depend on the number of columns to determine if an unmatched pair exists, but this works without having to know the exact layout of either file, other than the desired column to compare.
Yes, multiple columns can be used to match.
Last edited by agama; 08-30-2012 at 11:38 PM..
Reason: small efficiency change.
Hi,
I have two files consisting of two columns. So I want to merge column 2 if column 1 is the same. So heres an example of what I mean.
FILE1
driver 444
car 333
hat 222
FILE2
driver 333
car 666
hat 999
So I want to merge the column 2's together so... (4 Replies)
Hi All,
I do have 2 files
file 1 has 4 tab delimited columns
234 a c dfgyu
294 b g fih
302 c h jzh
328 z c san
597 f g son
File 2 has 2 tab delimted columns
234 23
302 24
597 24
I want to merge file 2 with file 1 based on the data common in both files which is the first column so... (6 Replies)
Hi there,
I'm trying to merge two files and make a third file.
However, two of the columns need to match exactly in both files AND I want everything from both files in the output if the two columns match in that row.
First file looks like this:
chr1 10001980 T A
Second... (12 Replies)
I had two files file1 and file2. I want a o/p file(file3) like below using first column as ref. Pls give suggestion ass join is not working as the number of lines in each file is nealry 5 C?
file1
---------------------
404000324810001 Y
404000324810004 N
404000324810008 Y
404000324810009 N... (1 Reply)
Hi,
I have a file which I'd like to merge lines based on duplicates in one column while keeping the info for other columns. Let me simplify it by an example:
File
ESR1 ANASTROZOLE NA FDA_approved
ESR1 CISPLATIN NA FDA_approved
ESR1 DANAZOL agonist NA
ESR1 EXEMESTANE NA FDA_approved... (3 Replies)
Respected Members.
Hello.
This is my first post in the forum. I will try to follow all the rules as prescribed by the forum. In case of non-compliance, I request you to kindly give me some more time to understand and abide by them.
I am working on two files. I wish to merge the two files... (1 Reply)
Respected Members.
Hello.
This is my first post in the forum. I will try to follow all the rules as prescribed by the forum. In case of non-compliance, I request you to kindly give me some more time to understand and abide by them.
I am working on two files. I wish to merge the two files... (6 Replies)
Hi,
I am facing issues while accomplishing below task.
We have two files Test1.txt and Test2.txt. We have to match 1st column of Test1.txt file with 2nd column of Test2.txt and then merge 2nd file with the 1st file. In the output we should select column 1 and 2 from the 1st file and column 1... (5 Replies)
Hi all,
I've multiple files. In this case 5. Space separated columns. Each file has 12 columns. Each file has 300-400K lines.
I want to get the output such that if a value in column 2 is present in all the files then get all the columns of that value and print it side by side.
Desired output... (15 Replies)
Hellow,
I have a tab-delimited file with 3 columns :
BINPACKER.13259.1.p2 SSF48239
BINPACKER.13259.1.p2 PF13243
BINPACKER.13259.1.p2 G3DSA:1.50.10.20
BINPACKER.13259.2.p2 SSF48239
BINPACKER.13259.2.p2 PF13243
BINPACKER.13259.2.p2 G3DSA:1.50.10.20... (7 Replies)
Discussion started by: anjaliANJALI
7 Replies
LEARN ABOUT MINIX
join
JOIN(1) General Commands Manual JOIN(1)NAME
join - relational database operator
SYNOPSIS
join [-an] [-e s] [-o list] [-tc] file1 file2
DESCRIPTION
Join forms, on the standard output, a join of the two relations specified by the lines of file1 and file2. If file1 is `-', the standard
input is used.
File1 and file2 must be sorted in increasing ASCII collating sequence on the fields on which they are to be joined, normally the first in
each line.
There is one line in the output for each pair of lines in file1 and file2 that have identical join fields. The output line normally con-
sists of the common field, then the rest of the line from file1, then the rest of the line from file2.
Fields are normally separated by blank, tab or newline. In this case, multiple separators count as one, and leading separators are dis-
carded.
These options are recognized:
-an In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-e s Replace empty output fields by string s.
-o list
Each output line comprises the fields specified in list, each element of which has the form n.m, where n is a file number and m is a
field number.
-tc Use character c as a separator (tab character). Every appearance of c in a line is significant.
SEE ALSO sort(1), comm(1), awk(1).
BUGS
With default field separation, the collating sequence is that of sort -b; with -t, the sequence is that of a plain sort.
The conventions of join, sort, comm, uniq, look and awk(1) are wildly incongruous.
7th Edition April 29, 1985 JOIN(1)