Using the outerjoin to join more than 2 tables
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I want to join multiple tables together to make one table. I've used the outerjoin function to join 2 tables together(shown below). Is there anyway to join more than 2 tables using the outerjoin function.
c = outerjoin(data{1,1},data{1,3},'Keys','time','MergeKeys',true);
2 Comments
Jan
on 30 Jan 2018
No, you did not use the outerjoin function, but the join function.
Mark Rodger
on 30 Jan 2018
Answers (1)
You can nest the joining:
outerjoin(A, outerjoin(B, C))
[EDITED] With a loop:
function Joined = MultiOuterJoin(varargin)
Joined = varargin{1};
for k = 2:nargin
Joined = outerjoin(Joined, varargin{k});
end
end
3 Comments
Nick George
on 7 Jun 2018
Edited: Nick George
on 7 Jun 2018
is this a joke? this is the best solution matlab offers for a very common operation? This answer https://www.mathworks.com/matlabcentral/answers/404380-outer-join-of-multiple-tables is nicer than nesting... but it is still a loop. Both python and r allow passing lists of data frames/tables as an argument to *_join.. I am surprised..
Devin kIM
on 9 Nov 2020
I gotta agree with Nick on this one... This can be done in virtually all analysis languages, why is joining multiple tables not available in 2020b? Seems like something that should have been available a long time ago instead of adding more flashy features...
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