Question

我已定义serial PRIMARY KEY，如下所示：

CREATE TABLE auth_event(
    id serial PRIMARY KEY,
    time_stamp TIMESTAMP,
    client_ip VARCHAR(512),
    user_id INTEGER REFERENCES auth_user (id) ON DELETE CASCADE,
    origin VARCHAR(512),
    description TEXT
);

我导入的转储具有串行字段的显式值，如下所示：

INSERT INTO "auth_event" VALUES(6,'2012-12-03 21:50:49','127.0.0.1',181,'auth','User 181 Logged-in');
INSERT INTO "auth_event" VALUES(7,'2012-12-04 07:37:43','127.0.0.1',181,'auth','User 181 Logged-in');
INSERT INTO "auth_event" VALUES(8,'2012-12-05 11:42:28','127.0.0.1',181,'auth','User 181 Logged-in');
INSERT INTO "auth_event" VALUES(9,'2012-12-07 08:01:59','127.0.0.1',181,'auth','User 181 Logged-in');
INSERT INTO "auth_event" VALUES(10,'2012-12-07 16:32:58','127.0.0.1',181,'auth','User 181 Logged-in');
INSERT INTO "auth_event" VALUES(11,'2012-12-11 15:41:24','127.0.0.1',181,'auth','User 181 Logged-in');
INSERT INTO "auth_event" VALUES(12,'2012-12-11 22:55:08','127.0.0.1',181,'auth','User 181 Logged-in');

这意味着，根据this，序列值（与auth_event.id相关的序列值）将不会更新。

现在出现了我的问题：我使用的框架没有给串行字段赋值。这意味着postgres正在使用默认值，并且由于它尚未更新，因此会发生冲突。

如何在导入后更新与auth_event.id相关的序列值？

Answer 1

select setval(pg_get_serial_sequence('auth_event' , 'id'), (select max(id) from auth_event) );

导入后更新SERIAL值

1 个答案: