postgresql修改自增序列

----刪除前先解除 id 對該序列的依賴
ALTER TABLE tablename ALTER COLUMN id SET DEFAULT null;
DROP SEQUENCE IF EXISTS sequence_name;
---- id_max 即 id 目前的最大值，可寫為1，可通過 “SELECT MAX(id) FROM tablename” 得到
CREATE SEQUENCE sequence_name START WITH id_max;
ALTER TABLE tablename ALTER COLUMN id SET DEFAULT nextval('sequence_name'::regclass);

 

轉自https://blog.csdn.net/quanqxj/article/details/77505247