Visit Our UNIX and Linux User Community


using join command for files


 
Thread Tools Search this Thread
Special Forums Hardware Filesystems, Disks and Memory using join command for files
# 1  
Old 08-13-2002
Network using join command for files

Hi,
I have to join 2 files based on two key field columns.
But join command allows to give only one key column for fetching.So kindly update me whether i can compare 2 files based on two key columns or more than one key column.If so what is the syntax to compare it.
With thanks in advance,
subra.
# 2  
Old 08-13-2002
You can compare two files using diff, comm, cmp commands...
use man pages for further details...

if your file is large then u can also use bdiff..

Is this what you are looking for???

-Nisha
# 3  
Old 08-13-2002
I don´t think you´re right, nisha, cause he like to join two files based on two fields and not only want´s to see the difference between those files for what you´re using the diff/compare command.
But I´ve no idea how to help - probably awk or sed should help let me have a look :-)

BRGDS

Frank
# 4  
Old 08-13-2002
Hi,
I am specifically looking for the join command only...I've got the results from the diff utility and now i want to seperate the results obtained from it based on some conditions..So i want to know whether join can be used for more the one key column ...
with thanks
subra
# 5  
Old 08-13-2002
Network query formatted

Hi,
I think i did not state my query properly.This is the actual scenario....
Consider that there are two files. Each file contains data stored in a table in a database. Assume that the respective tables have primary key defined on atleast two columns. Is it possible to join the two files on these primary key columns?
with thanks in advance,
subra.
# 6  
Old 08-13-2002
Join can only be used for only one key column - so we have to find out an other solution.

greetz,
frank
# 7  
Old 08-13-2002
Error hi

Hi,
Thanks to everyone for ur prompt replies.Can u suggest me the other solution or kindly post a reply to this query when u come across an alternative to this...
Thanks in advance,
subra

Previous Thread | Next Thread
Test Your Knowledge in Computers #418
Difficulty: Easy
'JavaScript' is a trademark of Oracle Corporation in the United States.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Join, merge, fill NULL the void columns of multiples files like sql "LEFT JOIN" by using awk

Hello, This post is already here but want to do this with another way Merge multiples files with multiples duplicates keys by filling "NULL" the void columns for anothers joinning files file1.csv: 1|abc 1|def 2|ghi 2|jkl 3|mno 3|pqr file2.csv: 1|123|jojo 1|NULL|bibi... (2 Replies)
Discussion started by: yjacknewton
2 Replies

2. UNIX for Dummies Questions & Answers

How to use the the join command to join multiple files by a common column

Hi, I have 20 tab delimited text files that have a common column (column 1). The files are named GSM1.txt through GSM20.txt. Each file has 3 columns (2 other columns in addition to the first common column). I want to write a script to join the files by the first common column so that in the... (5 Replies)
Discussion started by: evelibertine
5 Replies

3. UNIX for Dummies Questions & Answers

How to use the join command to obtain tab delimited text files as an output?

How do you use the join command and obtain tab delimited text files as an output? Thanks! (2 Replies)
Discussion started by: evelibertine
2 Replies

4. UNIX for Dummies Questions & Answers

how to join two files using "Join" command with one common field in this problem?

file1: Toronto:12439755:1076359:July 1, 1867:6 Quebec City:7560592:1542056:July 1, 1867:5 Halifax:938134:55284:July 1, 1867:4 Fredericton:751400:72908:July 1, 1867:3 Winnipeg:1170300:647797:July 15, 1870:7 Victoria:4168123:944735:July 20, 1871:10 Charlottetown:137900:5660:July 1, 1873:2... (2 Replies)
Discussion started by: mindfreak
2 Replies

5. Shell Programming and Scripting

join files cisco command output

We have two files with results of two commands of cisco: one file; showintstatus, have the following format: Gi2/6 servidorlij connected 176 full 1000 10/100/1000BaseTsecond file; showmacaddrestable, have the following format: * 162 0021.9b8d.073e dynamic Yes 0 ... (1 Reply)
Discussion started by: robonet
1 Replies

6. Shell Programming and Scripting

awk command for simple join command but based on 2 columns

input1 a_a a/a 10 100 a1 a_a 20 200 b1 b_b 30 300 input2 a_a a/a xxx yyy a1 a1 lll ppp b1 b_b kkk ooo output a_a a/a 10 100 xxx yyy (2 Replies)
Discussion started by: ruby_sgp
2 Replies

7. UNIX for Dummies Questions & Answers

Join 2 files with multiple columns: awk/grep/join?

Hello, My apologies if this has been posted elsewhere, I have had a look at several threads but I am still confused how to use these functions. I have two files, each with 5 columns: File A: (tab-delimited) PDB CHAIN Start End Fragment 1avq A 171 176 awyfan 1avq A 172 177 wyfany 1c7k A 2 7... (3 Replies)
Discussion started by: InfoSeeker
3 Replies

8. Shell Programming and Scripting

join (pls help on join command)

Hi, I am a new learner of join command. Some result really make me confused. Please kindly help me. input: file1: LEO oracle engineer 210375 P.Jones Office Runner ID897 L.Clip Personl Chief ID982 S.Round UNIX admin ID6 file2: Dept2C ID897 6 years Dept5Z ID982 1 year Dept3S ID6 2... (1 Reply)
Discussion started by: summer_cherry
1 Replies

9. OS X (Apple)

Command line tool to join multiple .wmv files?

I need a simple command line executable that allows me to join many wmv files into one output wmv file, preferrably in a simple way like this: wmvjoin file1.wmv file2.wmv .... > outputfile.wmv So what I want is the wmv-equivalent of mpgtx I cannot find it on internet. Thanks. (2 Replies)
Discussion started by: karman
2 Replies

10. Shell Programming and Scripting

Join Command Help

Hi, I am trying to use join command for two files of size greater than 1 GB. join -t , -1 2 -2 1 -o 1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,1.10,1.11,1.12,1.13,1.14,1.15,1.16,1.17,1.18,1.19,1.20,1.21,1.22,1.23 File1 File2 > File3 we are facing space crunch after using these join command. May i... (0 Replies)
Discussion started by: jerome Sukumar
0 Replies

Featured Tech Videos