How to vertically concatenate two tables with different sizes

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Mars
Mars 2017-2-3
编辑： Sterling Baird 2020-9-5
For example:
>> A = table(['A1';'A1';'A1'],[1;1;1],[1;1;1],...
'VariableNames',{'Var1' 'Var2' 'Var3'})
A =
Var1 Var2 Var3
____ ____ ____
A1 1 1
A1 1 1
A1 1 1
>> B = table(['B1';'B1'],[2;2],[2;2],...
'VariableNames',{'Var1' 'Var2' 'Var4'})
B =
Var1 Var2 Var4
____ ____ ____
B1 2 2
B1 2 2
How can I vertically concatenate A and B like the following? Thanks!
Var1 Var2 Var3 Var4
____ ____ ____ ____
A1 1 1 NAN
A1 1 1 NAN
A1 1 1 NAN
B1 2 NAN 2
B1 2 NAN 2

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采纳的回答

Walter Roberson
Walter Roberson 2017-2-3
outerjoin(A,B,'MergeKeys', true)
It took me a few minutes to find the right command.

更多回答（1 个）

Sterling Baird
Sterling Baird 2020-9-5
编辑：Sterling Baird 2020-9-5
Also consider looking at FEX: tblvertcat which builds on outerjoin and supports 2+ tables and shared variable names
tblvertcat(A,B)
>>
Var1 Var2 Var3 Var4
____ ____ ____ ____
A1 1 1 NaN
A1 1 1 NaN
A1 1 1 NaN
B1 2 NaN 2
B1 2 NaN 2

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