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.
More Causes of Sciatica and Sciatica-Type Symptoms. In addition to the most common causes, a number of other conditions can cause sciatica, including: Pregnancy. The changes the body goes through during pregnancy, including weight gain, a shift of one's center of gravity, and hormonal changes, can cause sciatica during pregnancy. Scar tissue. If scar tissueâalso called epidural fibrosisâcompresses to a lumbar nerve root, it can cause sciatica. Muscle strain.