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EMPLOYEES中职员编号为90的职员的commission_pct为空值,salary为1000,语句select12*salary*(commission_pct+0.2)comm from EMPLOYEES;comm显示的结果是()。
A.12000
B.0
C.2400
D.NULL
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更多 “ EMPLOYEES中职员编号为90的职员的commission_pct为空值,salary为1000,语句select12*salary*(commission_pct+0.2)comm from EMPLOYEES;comm显示的结果是()。 A.12000B.0C.2400D.NULL ” 相关考题
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