When a negative unary operator is set against a negative value, the returned value is positive (negative_value * negative_value = positive_value). SELECT (DATEPART(day, Order Date) - DATEPART(day, Shipped Date)) FROM Orders WHERE OrderID = '10248' -- Without a unary operator, the value returned is '-12'.
Cystic fibrosis (CF) is a genetic disorder that particularly affects the lungs and digestive system. Kids who have it are more vulnerable to repeated lung infections. Recent high-tech medical advances in drug therapy and genetics are helping children born with CF lead longer and more comfortable lives.
Signs and symptoms. Health problems associated with cystic fibrosis. The main signs and symptoms of cystic fibrosis are salty-tasting skin, poor growth, and poor weight gain despite normal food intake, accumulation of thick, sticky mucus, frequent chest infections, and coughing or shortness of breath. Males can be infertile due to congenital absence of the vas deferens.