php - 完整性约束违规错误

Question

我收到以下错误:

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'id' in field list is ambiguous

我不知道它是从哪里来的。堆栈跟踪也不清楚。引发此错误的查询:

Database::executeQuery('CREATE TEMPORARY TABLE tmp_inventory ENGINE=MEMORY '
                . 'SELECT id, email_hash, mailing_list_id, ttl, price, last_click, last_view, extra_data '
                . 'FROM inventory i INNER JOIN mailing_list ml on i.mailing_list_id = ml.id '
                . 'WHERE i.active = 0 AND i.deleted = 1 AND i.completely_deleted = 1 AND i.resting_to < NOW() AND i.next_sync_at < NOW() AND ml.active = 0 '
                . 'LIMIT 10;');

所以我有两个表 - inventory 和 mailing_list。库存具有以下结构:

CREATE TABLE `inventory` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `email_hash` char(32) NOT NULL,
  `mailing_list_id` int(6) DEFAULT NULL,
  `created_at` datetime DEFAULT NULL,
  `last_send_at` datetime DEFAULT NULL,
  `resting_to` datetime DEFAULT NULL,
  `next_sync_at` datetime DEFAULT NULL,
  `ttl` datetime DEFAULT NULL,
  `active` tinyint(1) NOT NULL DEFAULT '1',
  `deleted` tinyint(1) NOT NULL DEFAULT '0',
  `completely_deleted` tinyint(1) NOT NULL DEFAULT '0',
  `price` int(10) unsigned NOT NULL,
  `last_view` datetime DEFAULT NULL,
  `last_view_at` datetime DEFAULT NULL,
  `last_updated_at` datetime DEFAULT NULL,
  PRIMARY KEY (`id`),
)

还有邮件列表:

CREATE TABLE `mailing_list` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(255) DEFAULT NULL,
  `active` tinyint(1) NOT NULL DEFAULT '0',
  `created_at` datetime NOT NULL,
  `price` int(10) unsigned NOT NULL DEFAULT '1000',
  `ttl` int(10) unsigned NOT NULL DEFAULT '604800',
  `resting_time` int(10) unsigned NOT NULL DEFAULT '0',
  `email_from` varchar(255) DEFAULT NULL,
  `email_return_path` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
)

怎么了？

Answer 1

在您的查询中，您将访问 2 个表:FROM 子句中的 inventory 和 INNER JOIN 子句中的 mailing_list。 这两个表都有一个名为 id 的列，因此您的数据库不知道您引用的是哪一列。

要解决此问题，请在选择中指定表，将 id 替换为 i.id 或 ml.id