1. 创建序列dept_id_seq,开始值为200,每次增长10,最大值为10000
a) create sequence dept_id_seq
b) start with 200
c) increment by 10
d) maxvalue 10000
2. 使用序列向表dept中插入数据
a) insert into dept01
b) values(dept_id_seq.nextval,'Account')
附:
create table dept as
select department_id id,department_name name
from departments
where 1=2
65. 创建序列: 1). create sequence hs increment by 10 start with 102). NEXTVAL 应在 CURRVAL 之前指定 ,二者应同时有效65. 序列通常用来生成主键:INSERT INTO emp2 VALUES (emp2_seq.nextval, 'xx', ...) 总结: what -- why -- how
表table
视图view
序列sequence
索引index
同义词synonym