Which action must be taken after typing the new field in the SQL view to see results?

To see the results after typing a new field in the SQL view, it is necessary to click the 'Run' button. This action executes the SQL query against the database and retrieves the corresponding results based on the SQL commands provided. When you add or modify a field in SQL, this change is not automatically reflected in the results until the query is executed. Clicking the 'Run' button sends the instruction to the database to process the query and display the retrieved data.

Other choices do not lead to viewing results. Using the Undo button would reverse changes made in the text field but wouldn't execute the SQL. Saving the query is a good practice for future reference but does not display results immediately. Closing the SQL view simply exits the window without showing any results from the executed query. Hence, the action that allows users to see results after modifications is indeed to click the 'Run' button.