如何检查模式中是否存在序列？

Question

Is there a way to retrieve all the sequences defined in an existing oracle-sql db schema? 有没有办法检索现有oracle-sql db模式中定义的所有序列？

Ideally I would like to use something like this: 理想情况下，我想使用这样的东西：

SELECT * FROM all_sequences WHERE owner = 'me';

which apparently doesn't work. 这显然不起作用。

Answer 1

Try this: 尝试这个：

SELECT object_name
  FROM all_objects
 WHERE object_type = 'SEQUENCE' AND owner = '<schema name>'

Answer 2

Yes: 是：

select * from user_sequences;

Your SQL was almost correct too: 您的SQL几乎也是正确的：

select * from all_sequences where sequence_owner = user;

Answer 3

Below query can be triggered in Oracle Developer to check whether sequence present in DB or not : 可以在Oracle Developer中触发以下查询，以检查DB中是否存在序列：

SELECT count(*) count FROM user_sequences WHERE sequence_name = 'SEQ_NAME';

If ' SEQ_NAME ' present in your DB then count will return 1 else 0 . 如果您的数据库中存在“ SEQ_NAME ”，则count将返回1，否则为0。