Oracle 字符序列?

Oracle sequences of characters?

在 Oracle 中,我们可以创建整数序列:

CREATE SEQUENCE IDPassenger
MINVALUE 1
START WITH 1
INCREMENT BY 1
CACHE 15
/

是否可以做字符序列?如果是,如何?

不,不可能:

sequence, which is a database object from which multiple users may generate unique integers

参见this文章