You can close a data connection at any time. Doing so does not modify the data source. Instead, it disconnects Tableau from the data so that you can no longer query it. Additionally, the connection is cleared from the Data window and all open worksheets associated with the data are cleared. If you accidentally close a connection, use the Undo button to reconnect.
- Select the data source at the top of the Data window.
- Select a data source on the Data menu and then select Close.