You can remove a table or any table-valued object from the query.
In the Diagram Pane, select a table, view, function, synonym, or query, and then press DELETE, or right-click the object and then click Remove from the diagram. You can select and remove multiple objects at one time.
Remove all references to the object in the SQL editor.
When you remove a table or table-valued object, the Query Builder automatically removes joins that involve that table or table-valued object and removes references to the object’s columns in the SQL editor and.
Removing a table or table-valued object does not delete anything from the database, it only removes it from the current query.