Joining 2 column in one

[JazzzyJo]

Probably an easy problem

I have column A and B that I want to transfer in column C like this :

In C

A1
B1
A2
B2
A3
B3
etc

Thx

 

[Rick Rothstein]

Here is a single, non-volatile formula that seems to work...

=INDEX(A$1:B$9,INT((ROW()+1)/2),2-MOD(ROW(),2))

Change the upper row limit as necessary and only copy it down to row whose number is twice the upper row limit (otherwise it will produce #REF! errors).

 

[JazzzyJo]

It is working. Thx

Whats the difference between a A1 and R1C1 text reference?

 

[Aladin Akyurek]

There you go

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Also...

C1, copy down:

=IF(MOD(ROW()-ROW($C$1),2)=0,
    INDEX($A$1:$A$9,ROUNDUP(ROWS($C$1:C1)/2,0)),
    INDEX($B$1:$B$9,ROUNDDOWN(ROWS($C$1:C1)/2,0)))