Filter Data By values after outer join

I’ve created a “Outer join” transformation for my applications to be assembled in the same table.There are empty lines.
So I apply a “filter data by values” transformation to ignore blanks cells, it simply doesn’t work.
Please i need your help ASAP

Hi @sabrinelaroussi,

Can you please share a screenshot of your panel, the query you used, and the datasource? The more info the more likely we can help get this solved.