”号课的成绩
实现代码
SELECTSSNOSSNAMESC1号课成绩SC2号课成绩
FROMS
SELECTSC1SNO1号课成绩SC1SCGRADE2号课成绩SC2SCGRADE
FROMSCSC1CC1SCSC2CC2
fWHERESC1CNOC1CNOANDC1NAME1
ANDSC2CNOC2CNOANDC2NAME2
ANDSC1SCGRADESC2SCGRADE
SCWHERESSNOSCSNO
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