若想查询student表中name为空值的记录，则正确的SQL语句是

题目：若想查询student表中name为空值的记录，则正确的SQL语句是

A. select * from student where name = null;

B. select * from student where name link null;

C. select * from student where name = 'null';

D. select * from student where name is null;

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