Copy data for one table to another

Hi all, i am working with tables and i have one problem. I have one table:

This table have unique sort index values (1,2,3...) and the values in second column that i want copy.

The other table that i want to paste the values with his index is:

 The result would be:

How i can make this? I am trying to have some indexing such as:

if true
  B.coefic = [B A(B,2)];
end
But wrong results.

Thank you very much!

Answer 1

[Stephen23]

[~,idx] = ismember(B.Fecha,A.Fecha);
B.coeff = A.values1(idx)

Or

B = A(idx,:)

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-table.html

Demonstrated using numeric arrays:

>> A = [1,2,3,4,5,6,7;15,12,18,11,19,10,14].'
A =
    1   15
    2   12
    3   18
    4   11
    5   19
    6   10
    7   14
>> B = [1,1,1,2,2,3,3,3,4,5,5,6,7].'
B =
   1
   1
   1
   2
   2
   3
   3
   3
   4
   5
   5
   6
   7
>> [~,idx] = ismember(B,A(:,1));
>> A(idx,:)
ans =
    1   15
    1   15
    1   15
    2   12
    2   12
    3   18
    3   18
    3   18
    4   11
    5   19
    5   19
    6   10
    7   14