试题详情
- 单项选择题What is true regarding subqueries?（）
A、The inner query always sorts the results of the outer query
B、The outer query always sorts the results of the inner query
C、The outer query must return a value to the outer query
D、The inner query returns a value to the outer query
E、The inner query must always return a value or the outer query will give an error
- E
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