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- 单项选择题 假设ABC中的所有列均为字符数据类型,A列的默认值为“VA”,同时还有B列和C列,则执行以下SQL语句:INSERT ABC(A,C)VALUES(‘V’,‘NULL’)后,下列的说法哪一项正确()。
A、插入B列的值为字符‘NULL’
B、插入A列的值为字符VA
C、插入B列的值空值
D、插入C列的值空值
- C
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