Questions about Concatenate

Dear all,

I’m sorry to keep asking you questions,

There was a problem while using Concatenate.

My data is as follows.

node1 node2

column1 column2

-1.0 -0.85

-0.98125 -0.86875

-0.9625 -0.8875

-0.94375 -0.90625

-0.925 -0.925

-0.90625 -0.94375

-0.8875 -0.9625

-0.86875 -0.98125

-0.85 -1.0

Concatenating both values removes duplicate values, leaving only 9 values remaining.

I don’t think there’s a separate option to not remove duplicate values, how can I fix it?

Thank you.