buff2.0/docs/steam_accounts_his.sql

/*
 Steam账号绑定表历史（精简版）
 与 steam_accounts 主表字段一致 + 历史操作信息。
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

DROP TABLE IF EXISTS `steam_accounts_his`;
CREATE TABLE `steam_accounts_his` (
  `id` int(11) NOT NULL COMMENT '原表主键ID',
  `user_id` int(11) NOT NULL COMMENT '用户ID',
  `steam_username` varchar(100) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'Steam用户名',
  `steam_id` varchar(50) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT 'Steam ID',
  `is_active` tinyint(1) DEFAULT '1' COMMENT '是否启用',
  `is_deleted` tinyint(1) DEFAULT '0' COMMENT '是否删除',
  `created_at` datetime DEFAULT NULL COMMENT '绑定时间',
  `updated_at` datetime DEFAULT NULL COMMENT '更新时间',
  `his_created_at` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '历史记录创建时间',
  `his_operation` varchar(10) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作类型：INSERT/UPDATE/DELETE',
  PRIMARY KEY (`id`,`his_created_at`),
  KEY `idx_user_id` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='Steam账号绑定表历史';

SET FOREIGN_KEY_CHECKS = 1;