How to list data from firebase realtime database

I'd like to get a list of tours of the realtime database.
In this capture there is the query, which returns data.
But in the table component I'm not able to put in a correct format to list the data and get the rows.

Try with

return Object.keys(data).map(k => data[k])

Thanks for your promt reply!
It works when I put in this coding in the transformer section of the query!

Then I can have in the data field of the table the normal syntax, like also in firestore "{{ }}".