You must already have been granted the roles that you name in the SET ROLE statement. Syntax. set_role ::=. Semantics. role. Specify a role to be enabled for the current session. Any roles not listed and not already enabled are disabled for the current session. In the IDENTIFIED BY password clause, specify the password for a role. If the role has a password, then you must specify the password to enable the role.
By Mayo Clinic Staff. 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.
Etiology. MVP is most often caused by. Myxomatous degeneration of the mitral valve leaflets and chordae tendineae. In myxomatous degeneration, the fibrous collagen layer of the valve thins and mucoid (myxomatous) material accumulates.ey Points. MVP is most often caused by idiopathic myxomatous degeneration of the mitral valve and chordae tendineae. Mitral regurgitation (MR) is the most common complication. Heart sounds often include a sharp, mid-systolic click that occurs earlier with the Valsalva maneuver.