Row filter: How to create an expression to filter matched terms OR 'missing values'?


I am using regex in 'row filter' to filter the term 'no abstract' or if the row is empty (missing value).

I have the begging of the expression

.*no abstract.*|

but I don't know how to finish it regarding the 'missing values'.

Could anyone give a hand?

Many thanks in advance,


You cannot filter missing values with this node. You need to use the Missing Value node instead.