Row splitter:exclude matching rows

Hi,

I do not know the regular expression to split my table into matching and non-matching rows.

The matching row IDs looks like follows after the use of the Joiner node:

Row0_Row355

...

Now i want to exclude all the matching rows, so that only rows like this:?_Row and Row_? remain in the table.

 

Thanks a lot,

Julia

it would be (.+_\?|\?_.+)  either ?_Row and Row_? (So exclude this to get the Row_Rows)

It would be .+_\? for Row_?

and \?_.+ for ?_Row

Best, Iris

Thank you! :)