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Using the outerjoin to join more than 2 tables

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Mark Rodger
Mark Rodger il 30 Gen 2018
Commentato: Devin kIM il 9 Nov 2020
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 Commenti
Jan
Jan il 30 Gen 2018
No, you did not use the outerjoin function, but the join function.
Mark Rodger
Mark Rodger il 30 Gen 2018
Yeah, meant to say join instead of outerjoin

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Risposte (1)

Jan
Jan il 30 Gen 2018
Modificato: Jan il 8 Giu 2018
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 Commenti
Jan
Jan il 8 Giu 2018
Modificato: Jan il 8 Giu 2018
@Nick George: No, I'm not joking. All I did was to show, that it is easy to call outerjoin multiple times. If this is done recursively of by a loop does not matter, because the point is the iterative joining.
See EDITED.
Devin kIM
Devin kIM il 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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