The Rename functionality provides an easy way to change an object name for a new one that better reveals its purpose and automatically finds and corrects all references to it.
You can rename an object only in a script, and not in a database.
The Rename refactoring is available for:
Right-click the required object and select the Rename command on the shortcut menu. Alternatively, you can select the object and press F2. The object will be highlighted.
Type a new name for the object in the SQL editor window. As you type, a tooltip appears instructing to Press F2 to preview changes or Enter/Tab to apply.
Press F2 to open the Preview Changes - Rename dialog window and preview code changes, to apply changes press the Apply button;
Alternatively, press Enter/Tab to apply changes in the code.