Create the join, either automatically or manually. For details, see How to: Join Tables Automatically or How to: Join Tables Manually. Select the join line in the Diagram pane, and then from the Query Designer menu, choose, selecting the command that includes the table whose extra rows you want to include.
Onchocerciasis, also known as river blindness and Robles disease, is a disease caused by infection with the parasitic worm Onchocerca volvulus. Symptoms include severe itching, bumps under the skin, and blindness. It is the second most common cause of blindness due to infection, after trachoma. The parasite worm is spread by the bites of a black fly of the Simulium type.
Onchocerciasis facts. 1  Onchocerciasis is a parasitic disease that may cause blindness. 2  It is called river blindness as the blackfly that transmits the disease lives and breeds near fast-flowing rivers. 3  Symptoms include skin changes, itching, nodules, and alterations in vision.  Symptoms may not appear for months to years.