【单选题】语句 delete from sc 表明()
【单选题】根据SQL标准,把表SC1中的记录复制到另一个表SC2中,其中SC1表和SC2表的字段定义完全一样。下面哪条语句适用?()
A.
copy * from SC1 to SC2
B.
copy * from SC2 to SC1
C.
insert into SC2 select * from SC1
D.
insert into SC1 select * from SC2
【单选题】商检部门对进出口商品的质量、规格、等级进行检验后出具的是