using join command for files

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

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,
# 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???

# 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 :-)


# 4  
Old 08-13-2002
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
# 5  
Old 08-13-2002
Network query formatted

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,
# 6  
Old 08-13-2002
Join can only be used for only one key column - so we have to find out an other solution.

# 7  
Old 08-13-2002
Error 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,
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