Join four columns into one according to each row

问题

A B C D
E F G H
I J K L
M N O P

If I chose to join the columns I would ={A1:A;B1:B;C1:C;D1:D} but it would look like this:

A
E
I
M
B
F
J
N
... and so on

I would like it to look like this:

A
B
C
D
E
F
G
... and so on

How to proceed in this case?

Note: It may happen that some of the columns are not complete in data, some may have more values than the others, but I still want to continue following this same pattern. Example:

A B   D
E   G H
I J K L
M N O P

Result:

A
B
D
E
G
H
... and so on

回答1:

use:

=TRANSPOSE(QUERY(TRANSPOSE(A:D),, 9^9))

then:

=TRANSPOSE(SPLIT(QUERY(TRANSPOSE(QUERY(TRANSPOSE(A:D),,9^9)),,9^9), " "))

来源：https://stackoverflow.com/questions/60028381/join-four-columns-into-one-according-to-each-row