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设关系数据库中一个表S的结构为S(SN,CN,grade),其中SN为学生名,CN为课程名,二者均为字符型;grade为成绩,数值型,取值范围0-100。若要把“张二的化学成绩80分”插入S中,则可用( )。




A.ADD INTO S VALUES(’张二’,’化学’,’80’)

B.INSERT INTO S VALUES(’张二’,’化学’,’80’)

C.ADD INTO S VALUES(’张二’,’化学’,80)

D. INSERT INTO S VALUES(’张二’,’化学’,80)


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