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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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Tk_GetJoinStyle(3)					       Tk Library Procedures						Tk_GetJoinStyle(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tk_GetJoinStyle, Tk_NameOfJoinStyle - translate between strings and join styles SYNOPSIS
#include <tk.h> int Tk_GetJoinStyle(interp, string, joinPtr) const char * Tk_NameOfJoinStyle(join) ARGUMENTS
Tcl_Interp *interp (in) Interpreter to use for error reporting. const char *string (in) String containing name of join style: one of "bevel", "miter", or "round". int *joinPtr (out) Pointer to location in which to store X join style corresponding to string. int join (in) Join style: one of JoinBevel, JoinMiter, JoinRound. _________________________________________________________________ DESCRIPTION
Tk_GetJoinStyle places in *joinPtr the X join style corresponding to string, which will be one of JoinBevel, JoinMiter, or JoinRound. Join styles are typically used in X graphics contexts to indicate how adjacent line segments should be joined together. See the X documentation for information on what each style implies. Under normal circumstances the return value is TCL_OK and interp is unused. If string does not contain a valid join style or an abbrevia- tion of one of these names, then an error message is stored in interp->result, TCL_ERROR is returned, and *joinPtr is unmodified. Tk_NameOfJoinStyle is the logical inverse of Tk_GetJoinStyle. Given a join style such as JoinBevel it returns a statically-allocated string corresponding to join. If join is not a legal join style, then "unknown join style" is returned. KEYWORDS
bevel, join style, miter, round Tk Tk_GetJoinStyle(3)
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