Using the outerjoin to join more than 2 tables
이전 댓글 표시
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);
댓글 수: 2
Jan
2018년 1월 30일
No, you did not use the outerjoin function, but the join function.
Mark Rodger
2018년 1월 30일
답변 (1개)
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
댓글 수: 3
Nick George
2018년 6월 7일
편집: Nick George
2018년 6월 7일
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
2020년 11월 9일
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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