A.COPY TO BB DELIMITED WITH ″#″ B.COPY FROM AA DELIMITED WITH″#″ C.COPY TO BB DELIMITED WITH # D.COPY FROM AA DELIMITED WITH #
A.1000.0 B.1.0 C.0.0 D.3.0
A.3 B.4 C.2 D.1
A.1 B.128 C.132 D.144
A.是一种日期型数据类型 B.是一种日期和时间组合型数据类型 C.可以用来替代传统的数据库加锁技术 D.是一种双字节数据类型