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.
Acne is common during pregnancy. In fact, more than one out of every two pregnant women can expect to develop acne. In some cases, the acne may be severe. The primary cause of acne when you're pregnant is the increased hormone levels in the first trimester. The higher level increases the skin's production of natural oils. It's hard to predict who will develop pregnancy acne.