把对关系SPJ的属性QTY的修改权授予用户李勇的SQL语句是（）。A．GRANT QTY ON SPJ TO '李勇'B．GRANT UPDATE(QTY) ON SPJ TO '李勇'C．GRANT UPDATE (QTY) ON SPJ TO 李勇D．GRANT UPDATE ON SPJ (QTY) TO '李勇'
把对关系SPJ的属性QTY的修改权授予用户李勇的SQL语句是（）。
A．GRANT QTY ON SPJ TO '李勇'
B．GRANT UPDATE(QTY) ON SPJ TO '李勇'
C．GRANT UPDATE (QTY) ON SPJ TO 李勇
D．GRANT UPDATE ON SPJ (QTY) TO '李勇'
参考答案和解析
GRANT UPDATE（QTY） ON SPJ TO张三
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