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.
Clubfoot is a deformity of the whole foot that is present at birth. There are several types of clubfoot that are jointly known as 'talipes', as the deformity is mostly in the talus (a bone in the ankle).lubfoot occurs in about 1 in 1000 births. Both males and females are equally affected. In half of the cases, both feet are usually affected. Clubfoot must be treated, it does not correct itself.