SET ROLE. Purpose. Use the SET ROLE statement to enable and disable roles for your current session. You cannot enable more than 148 user-defined roles at one time.
Causes. Most cases of osteomyelitis are caused by staphylococcus bacteria, types of germs commonly found on the skin or in the nose of even healthy individuals.Germs can enter a bone in a variety of ways, including: 1  The bloodstream.auses. Most cases of osteomyelitis are caused by staphylococcus bacteria, types of germs commonly found on the skin or in the nose of even healthy individuals.
Osteomalacia, osteomyelitis, and osteoarthritis are different conditions that are frequently confused with osteopenia because they sound similar. Osteomalacia is a disorder of the mineralization of newly formed bone, which causes the bone to be weak and more prone to fracture. There are many causes of osteomalacia, including vitamin D deficiency and low blood phosphate levels. Osteomyelitis is bone infection.