如何在MySQL中的两个或多个表中具有唯一ID？

在表之间要求唯一的ID的确很少见，但是这里有一个解决方案。

CREATE TABLE object_ids (    id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,    object_type ENUM('event', ...) NOT NULL) ENGINE=InnoDB;CREATE TABLE events (    id INT UNSIGNED NOT NULL PRIMARY KEY,    ...    ConSTRAINT FOREIGN KEY (id) REFERENCES object_ids (id)) ENGINE=InnoDB;INSERT INTO object_ids(object_type) VALUES ('event');SET @id = LAST_INSERT_ID();INSERT INTO events (id, ...) VALUES (@id, ...);

显然，您将为

events