I want to put a filter box for all columns in a table. I know I can put a text box for all columns separately but that is not a good option. I want to put a text box besides/down each column name where if I enter a value then all rows gets filtered on that particular value. The default value will be "*" for all text boxes.
I am not sure but try this put your text box where ever you want, you can do this is just by clicking edit>add input>textbox and drag that text box to the location you want and then in drill down option select manage tokens on this dashboard and select 'set' and 'click.value' and token name should be form.token_name .
here token_name is the token you are using for textbox input.