下面是一个选择题,我们在出电子考卷的时候,为了使电子考卷更标准,一般呢都需要将选项答题的选项设置为选项模式,由考生去勾选。如下,是一个单选题,如何制作后者的选项模式呢?1.Which statement is true regarding the INTERSECT operator?A. It ignores NULL values.B. Reversing the order of the intersected tables alters the result.C. The names of columns in all SELECT statements must be identical.D. The number of columns and datatypes must be identical for all SELECT statements in the query.Answer: D
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发布于 2022-08-23 21:32