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.
Causes of cramping during pregnancy. Cramping typically occurs when the uterus expands, causing the ligaments and muscles that support it to stretch. It may be more noticeable when you sneeze, cough, or change positions. During the second trimester, a common cause of cramping is round ligament pain.