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Full Discussion: UNIX outer join
Top Forums UNIX for Dummies Questions & Answers UNIX outer join Post 302859007 by bakunin on Wednesday 2nd of October 2013 05:34:40 AM
Old 10-02-2013
If you compare the two variants, both of which worked partly, you may notice that in the first you left out the "items" field, which is why it didn't show up in the result. The join field is not automatically part of the output.:

Quote:
Originally Posted by wanderingmind16
Code:
join -t, -1 1 -2 1 -a 1 -a 2 -e 0 -o 1.2,1.3,1.4,2.3 xxx yyy

Instead of leaving it out you ordered it twice (once from file 1, once from file 2) here:
Code:
join -t, -1 1 -2 1 -a 1 -a 2 -e 0 -o 1.1,2.1,1.2,1.3,1.4,2.3 xxx yyy

The solution - as often, it is almost philosophical ;-)) - is the middle way of including the field only once. Wether you use "1.1" (include it from the first file) or "2.1" (include it from the second file) doesn't matter as these fields are equal anyway - you joined on them.

I hope this helps.

bakunin
 

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join(1T)						       Tcl Built-In Commands							  join(1T)

__________________________________________________________________________________________________________________________________________________

NAME
join - Create a string by joining together list elements SYNOPSIS
join list ?joinString? _________________________________________________________________ DESCRIPTION
The list argument must be a valid Tcl list. This command returns the string formed by joining all of the elements of list together with joinString separating each adjacent pair of elements. The joinString argument defaults to a space character. EXAMPLES
Making a comma-separated list: set data {1 2 3 4 5} join $data ", " => 1, 2, 3, 4, 5 Using join to flatten a list by a single level: set data {1 {2 3} 4 {5 {6 7} 8}} join $data => 1 2 3 4 5 {6 7} 8 SEE ALSO
list(1T), lappend(1T), split(1T) KEYWORDS
element, join, list, separator ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl join(1T)
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