MATLAB Answers


Join two tables with different sizes

Asked by Robert
on 2 Jun 2018
Latest activity Commented on by Walter Roberson
on 2 Jun 2018
I am trying to join two tables with different sizes
A = 50000 x 12
B = 9 x 3
Both matrices have a variable name 'UnqID'
Basically, I am trying to add information from table B column 2 and 3, following the same UnqID, in table A.
This is just an example of what I need to do, as the real tables have a larger size (different size)
I am following the examples at
...however, I am getting this error...
Error using tabular/outerjoin (line 141)
Left and right key variables 'UnqID' and 'UnqID' do not have the same number of columns.
In mathwork examples, the tables can have different size, so not sure what is happening.
Any suggestions? Thanks!


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Thank you so much, Walter!
Have a nice weekend!
Walter, for some reason I don't see where to accept your answer on this page...
I had only entered it as a Comment; I've made it an Answer now.

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1 Answer

Answer by Walter Roberson
on 2 Jun 2018
 Accepted Answer

The error message suggests that size(A.UnqID,2) is not the same as size(B.unqID,2)


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