Lambda function with TEXTJOIN

Hi,

Fist I put this in 365 as itn relates to LAMBDA, if it should be in general , sorry,

I have created a formula to give the columns of two table that are different so

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But I wanted to see I could reproduce as a spilled array, I have got as far as this

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which gives the columns / rows with differences,
but I'm not sure about getting TEXTJOIN to work within it? so is there a way? I have attached book with result non lambda
and the above.

Richard.

Thanks again,


Richard.

You're welcome & thanks for the feedback.