SQL> select sequence_name from user_sequences;

创建序列的语法

CREATE SEQUENCE sequence_name

START WITH start_num

INCREMENT BY increment_num

MAXVALUE maximum_num | NOMAXVALUE

MINVALUE minimum_num | NOMINVALUE

CYCLE | NOCYCLE

CACHE cache_num | NOCACHE

ORDER | NOORDER;

查询序列、

SQL> select sequence_name.nextval from dual;

SQL> select sequence_name.currval from dual;