MySQL选择电子邮件发送帐户到期提醒

我已经给了一个任务发送电子邮件提醒客户在我们的数据库通知他们的年度订阅即将到期。发送期限为账户过期前7天30天，15天。已发送的电子邮件将不会重新发送，直到下一个时间段到达（例如[email protected]帐户即将在2012-06-01到期。服务器在2012-05-02发送电子邮件，然后等到2012-05如果状态没有改变，-17再次发送）。此外，如果account_status.statusId不是3，服务器将不会再次发送消息，并重新设置account_metadata.v至7MySQL选择电子邮件发送帐户到期提醒

下面的示例数据列表：

占

id email 
1 [email protected] 
2 [email protected] 
3 [email protected] 
4 [email protected] 
5 Curae;@Phasellus.edu 
6 [email protected] 
7 [email protected] 
8 [email protected] 
9 [email protected] 
10 [email protected] 
11 [email protected] 
12 [email protected] 
13 [email protected] 
14 [email protected] 
15 [email protected] 
16 [email protected] 
17 [email protected] 
18 [email protected] 
19 [email protected] 
20 [email protected] 
21 [email protected] 
22 [email protected] 
23 [email protected] 
24 [email protected] 
25 [email protected] 
26 [email protected] 
27 [email protected] 
28 [email protected] 
29 [email protected].ca 
30 [email protected]

ACCOUNT_STATUS

id statusId accountId time 
1 1   2   2011-06-01 21:54:37 
2 1   3   2011-06-02 09:07:14 
3 1   4   2011-06-02 09:13:20 
4 1   5   2011-06-02 09:54:44 
5 1   6   2011-06-02 10:15:52 
6 1   7   2011-06-02 10:17:22 
7 2   7   2011-06-02 10:21:25 
8 1   8   2011-06-02 11:09:03 
9 1   9   2011-06-02 11:09:18 
10 1   10   2011-06-02 11:13:29 
11 1   11   2011-06-02 11:21:11 
12 1   12   2011-06-02 11:21:35 
13 3   5   2011-06-02 11:41:04 
14 3   2   2011-06-02 11:46:07 
15 1   13   2011-06-02 11:49:18 
16 3   13   2011-06-02 11:53:45 
17 1   14   2011-06-02 12:02:26 
18 3   14   2011-06-02 12:10:54 
19 1   15   2011-06-02 13:41:19 
20 1   16   2011-06-02 15:27:03 
21 3   16   2011-06-02 15:42:58 
22 1   17   2011-06-02 15:46:05 
23 1   18   2011-06-02 15:59:56 
24 1   19   2011-06-02 16:13:41 
25 1   20   2011-06-02 16:17:36 
26 1   21   2011-06-02 16:47:04 
27 1   22   2011-06-02 16:47:39 
28 1   23   2011-06-02 18:35:29 
29 1   24   2011-06-02 19:17:06 
30 1   25   2011-06-02 20:07:33

一ccount_metadata

id  accountId k    v 
27033 2   remindEmail 3 
27034 3   remindEmail 3 
27035 4   remindEmail 3 
27036 5   remindEmail 3 
27037 6   remindEmail 3 
27038 7   remindEmail 3 
27039 8   remindEmail 3 
27040 9   remindEmail 7 
27041 10   remindEmail 7 
27042 11   remindEmail 7 
27043 12   remindEmail 7 
27044 13   remindEmail 3 
27045 14   remindEmail 3 
27046 15   remindEmail 7 
27047 16   remindEmail 3 
27048 17   remindEmail 7 
27049 18   remindEmail 7

需要注意的是：

accounts.id和account_metadata.accountId是唯一
accounts.id = account_metadata.accountId = account_status.accountId
所有三个表是Innodb的

MySQL的查询我目前有有：

如果statusId在ACCOUNT_STATUS不是3，remindEmail至7然后设置值：

UPDATE `account_status` AS acs, `accounts` AS a, `account_metadata` AS am 
SET am.v = '7' 
WHERE acs.statusId != 3 
AND acs.accountId = a.id 
AND a.id = am.accountId 
AND am.k = 'remindEmail';

已将电子邮件提醒取决于周期（30天=> 7，15天=> 3 ，7天=> 1）前1年status = 3：

SELECT am.accountId, a.email, am.k, am.v, acs.time 
FROM accounts a 
INNER JOIN account_status acs ON a.id = acs.accountId 
INNER JOIN account_metadata am ON a.id = am.accountId 
WHERE acs.statusId = 3 
AND am.k = 'remindEmail' 
AND NOW() <= DATE_ADD(acs.time, INTERVAL 365 DAY) 
AND NOW() > DATE_ADD(acs.time, INTERVAL 365 - ((am.v & 1) * 7 + (am.v & 2) * 8 + (am.v & 4) * 15) DAY) 
AND am.v = %s;

更新account_metadata.v到新的状态：

UPDATE `account_metadata` AS am 
SET am.v = '%s' 
WHERE am.accountId = '%s' 
AND am.k = 'remindEmail';

这里的问题是，account_status.accountId不是唯一的（看到accountId = 13上表）。这会导致＃1将某些行重置为7，并且客户感觉他们被垃圾邮件。有没有办法修改＃2和/或＃1来选择最新的account_status.statusId（基于account_status.time）或更新最近的account_status.stautsId？

来源

2012-05-31 user1045217

这似乎工作：

SELECT am.accountId, a.email, am.k, am.v, acs.time 
FROM accounts a 
INNER JOIN account_status acs ON a.id = acs.accountId 
AND acs.id = (
    SELECT acs2.id 
    FROM account_status acs2 
    WHERE acs2.time = (
      SELECT MAX(acs3.time) 
      FROM account_status acs3 
      WHERE acs3.accountId = acs.accountId)) 
INNER JOIN account_metadata am ON a.id = am.accountId 
WHERE acs.statusId = 3 
AND am.k = 'remindEmail' 
AND NOW() <= DATE_ADD(acs.time, INTERVAL 365 DAY) 
AND NOW() > DATE_ADD(acs.time, INTERVAL 365 - ((am.v & 1) * 7 + (am.v & 2) * 8 + (am.v & 4) * 15) DAY) 
AND am.v = %s;

来源

2012-05-31 02:24:13

它似乎永远不会回报。 – user1045217

我终于通过自己解决问题。

-- If statusId in account_status is not 3, then set value of remindEmail to 7 -- 
UPDATE account_metadata am 
    INNER JOIN (
    SELECT acs0.id, acs0.accountId, acs0.statusId, acs0.time 
    FROM account_status acs0 
    CROSS JOIN (
     SELECT accountId, MAX(id) AS id 
     FROM account_status 
     GROUP BY accountId 
    ) acs1 USING (accountId, id) 
    WHERE acs0.statusId != 3 
) acs2 ON am.accountId = acs2.accountId 
SET am.v = '7' 
WHERE am.k = 'remindEmail'; 

-- Have sent email reminder depend on the period -- 
-- (30 days => 7, 15 days => 3, 7 days => 1) before 1 year -- 
-- and status = 3 -- 
SELECT am.accountId, a.email, am.k, am.v, acs2.time 
FROM accounts a 
INNER JOIN (
    SELECT acs.`id`, acs.`statusId`, acs.`accountId`, acs.`time` 
    FROM `account_status` acs 
    CROSS JOIN (
    SELECT accountId, MAX(id) AS id 
    FROM `account_status` 
    GROUP BY accountId 
) AS acs1 
    USING (accountId, id) 
    WHERE acs.`statusId` = 3 
) acs2 ON a.id = acs2.accountId 
INNER JOIN account_metadata am ON a.id = am.accountId 
WHERE am.v = %s 
AND am.k = 'remindEmail' 
AND NOW() <= DATE_ADD(acs2.time, INTERVAL 365 DAY) 
AND NOW() > DATE_ADD(acs2.time, INTERVAL 365 - ((am.v & 1) * 7 + (am.v & 2) * 8 + (am.v & 4) * 15) DAY);

来源

2012-05-31 10:51:06 user1045217

MySQL选择电子邮件发送帐户到期提醒

回答

相关问题