The dataset editor has recently been revamped. The old version looked like this:
The updated dataset editor is now on the left configuration panel. You can navigate to it by clicking on the “Datasets” Tab.
This section shows a data table with the result of the executed query. If there are errors with your query, they will be displayed here.
If you have AI enabled for your account, you can get error resolution suggestions here as well.
This section shows the available columns in each of the tables present in the selected schema. You can also swap schemas here, but doing so may cause your charts to load different data.
Once the query has been executed, you can use the formatting tab to modify and style the table shown in the underlying data modal.
Read more about exposing the underlying data on your charts here.