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[主观题]
在Oracle中,使用下列的语句:CREATE PUBLIC SYNONYM parts FOR Scott.inventory;完成的任务是?
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A.selectmax(job)fromt1groupbyjoborderbyjob
B.selectDISTINCTjobfromt1orderbyjob
C.selectuniquejobfromt1orderbyjob
D.selectmax(job)fromt1orderbyjob
E.selectjobfromt1orderbyempno
A.45,45
B.46,45
C.45,46
D.46,46
A.ROWSHARE是表级锁
B.一个会话对表加了SHARE锁,别的会话不能对该表加SHARE锁
C.一个会话对表加了SHARE锁,别的会话不能对该表进行修改
D.使用UPDATE语句修改记录,系统一定会添加ROWSHARE锁
A.to_date()
B.to_char()
C.altersessionsetnls_date_format
D.to_number()