Dynamic Dropdown Filtering - include all option

Hi All,

I am hoping someone can help me with something. I am using a dynamic dropdown to filter a graph and table. I want to include a dropdown option ‘All’ that defaults to all options in the dropdown included.

I am able to include the ‘all’ as an option in the dropdown, but I’m not sure how to correspond the ‘all’ to overwrite the condition in the server connect database query. Hope someone can help and thanks in advance.