Explanation: An unqualified column name is. ambiguous if more than one table or view identified in. the FROM clause has a column with that name, or if. more than one column of a nested table expression has. that name.
The exact cause of clubfoot is unknown, but doctors agree that a family history of clubfoot increases the likelihood that a child will be born with the condition. In addition, mothers who smoke and drink during pregnancy are more likely to give birth to a child with a clubfoot or clubfeet.
By Mayo Clinic Staff. Print. Clubfoot. Clubfoot Doctors use the term clubfoot to describe a range of foot abnormalities usually present at birth (congenital). In most cases, the front of the foot is twisted downward and inward, the arch is increased, and the heel is turned inward.