这是我的疑问:
$query = "UPDATE ".$SupportTicketsTable." a
LEFT JOIN ".$SupportUserTable." b
ON b.id=a.operator_id
SET
a.title=? ,
a.priority=?,
b.solved_tickets= CASE WHEN (a.ticket_status='0' AND b.solved_tickets>=1) THEN (b.solved_tickets-1) ELSE b.solved_tickets END ,
b.assigned_tickets= CASE WHEN (a.ticket_status='1' AND b.assigned_tickets >=1) THEN (b.assigned_tickets-1) ELSE b.assigned_tickets END ,
a.ticket_status=?,
a.operator_id='0'
WHERE a.enc_id=?";
我可以更改a
内的所有字段,但不能更改表b
中的字段,我不明白为什么。我还检查过b.id
等于a.operator_id
这些是我的表格:
CREATE TABLE IF NOT EXISTS `razorphyn_support_list_tickets` (
`id` BIGINT(15) UNSIGNED NOT NULL AUTO_INCREMENT,
`enc_id` CHAR(87),
`ref_id` VARCHAR(18),
`department_id` BIGINT(11) UNSIGNED NOT NULL,
`operator_id` BIGINT(11) UNSIGNED NOT NULL DEFAULT 0,
`user_id` BIGINT(11) UNSIGNED NOT NULL,
`title` VARCHAR(255) NOT NULL,
`priority` INT(2) UNSIGNED NOT NULL,
`website` VARCHAR(200) NOT NULL,
`contype` ENUM('0','1','2','3','4','5') NOT NULL DEFAULT '0',
`ftp_user` VARCHAR(60) NOT NULL,
`ftp_password` VARCHAR(60) NOT NULL,
`created_time` DATETIME NOT NULL,
`last_reply` DATETIME NOT NULL,
`ticket_status` ENUM('0','1','2','3') NOT NULL DEFAULT '2',
`operator_rate` DECIMAL(4,2) UNSIGNED,
PRIMARY KEY (`id`),
UNIQUE KEY (`user_id`,`title`),
INDEX (`enc_id`,`department_id`,`operator_id`,`user_id`,`ticket_status`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=20;
CREATE TABLE IF NOT EXISTS `razorphyn_support_users` (
`id` BIGINT(15) UNSIGNED NOT NULL AUTO_INCREMENT,
`name` VARCHAR(50) NOT NULL,
`mail` VARCHAR(50) NOT NULL,
`password` VARCHAR(200) NOT NULL,
`reg_key` VARCHAR(260) ,
`tmp_password` VARCHAR(87) ,
`ip_address` VARCHAR(50) NOT NULL,
`status` ENUM('0','1','2','3','4') NOT NULL DEFAULT '3',
`holiday` ENUM('0','1') NOT NULL DEFAULT '0',
`mail_alert` ENUM('no','yes') NOT NULL DEFAULT 'yes',
`assigned_tickets` INT(5) UNSIGNED NOT NULL DEFAULT 0,
`solved_tickets` BIGINT(11) UNSIGNED NOT NULL DEFAULT 0,
`number_rating` BIGINT(6) UNSIGNED NOT NULL DEFAULT 0,
`rating` DECIMAL(4,2) UNSIGNED NOT NULL DEFAULT 0,
PRIMARY KEY (`id`),
UNIQUE KEY(`mail`),
INDEX (`name`,`mail`,`status`,`holiday`,`assigned_tickets`,`solved_tickets`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=55;
这些是用户行:
(55, 'Admin', mail', 'code', 'code', NULL, '127.0.0.1', '2', '0', 'yes', 0, 0, 1, 4.00),
(62, 'Mario', 'mail', 'code', 'code', NULL, '87.8.28.216', '1', '0', 'yes', 2, 0, 0, 0.00);
这是故障排:
(60, 'enc_id', 'wwZs1amB', 9, 62, 55, 'Bell', 1, '', '0', '', '', '2013-08-10 12:30:48', '2013-08-10 12:30:48', '1', NULL);
答案 0 :(得分:0)
问题是MySQL在update
语句中不会多次更新单行。因此,您不会“累积”更新,因为您认为查询应该是。
此外,在一种情况下,B
中的值为NULL,因此将更新。
以下是两种替代方法:
b
中的值与a
保持一致。