When working with a query, you may wish to hide specific columns which are not of any use to your analytics.
This can be achieved by selecting the 'Column' tool on the upper right-hand side of the page.
Column settings will appear and from there, you can select what columns you would like included in your query. Once you are happy with your selected columns, click 'Update Settings'.
Once you have updated your column settings, the query will display your selected columns only. Now you can save the changes in the bottom right-hand corner.