让oracle实现mysql的风格，自增长：
给oracle增加一个触发器：代码如下：
CREATE OR REPLACE TRIGGER aaa BEFORE INSERT ON Movie FOR EACH ROW
BEGIN
SELECT MovieSeq.NEXTVAL INTO :new.id FROM DUAL;
END aaa;
. RUN;
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给MySQL增加Sequence管理功能
见：http://www.2cto.com/database/201202/119528.html