Question

我有一张这样的表：

 CREATE TABLE `UserTmp` (
`user_id` bigint(20) unsigned NOT NULL,
`nb_invit` bigint(20) unsigned DEFAULT '0',
`nb_share` bigint(20) unsigned DEFAULT '0',
`nb_sent` bigint(20) unsigned DEFAULT '0',
`total` bigint(20) unsigned DEFAULT '0',
PRIMARY KEY (`user_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8

我想执行这样的3个查询（每个表一个，以便有nb_share，nb_invit和nb_sent）：

INSERT INTO UserTmp (user_id, nb_share)
  select user_id, count(share_date) as 'nb_share' 
  from Share 
  where share_date between '2012-05-21 00:00:00' and '2012-05-28 00:00:00'
ON DUPLICATE KEY UPDATE nb_share=VALUES(nb_share);

使用nb_share字段的

等于表中存在的当前用户的份额数，并且需要更新

目标是让用户列表中包含操作数量和总字段，这是用户完成的操作的总和。

VALUES（nb_share）接缝向我提供所有用户的nb_share总数，而不是当前用户。

你有想法解决这个问题吗？

由于

Answer 1

您需要将SELECT分组为user_id：

INSERT INTO UserTmp (user_id, nb_share)
  SELECT   user_id, count(share_date)
  FROM     Share
  WHERE    share_date BETWEEN '2012-05-21 00:00:00' AND '2012-05-28 00:00:00'
  GROUP BY user_id
ON DUPLICATE KEY UPDATE nb_share = VALUES(nb_share)

Answer 2

或者您可以使用用户定义的变量：

INSERT INTO UserTmp (user_id, nb_share)
  SELECT   user_id, @nbshare := count(share_date)
  FROM     Share
  WHERE    share_date BETWEEN '2012-05-21 00:00:00' AND '2012-05-28 00:00:00'
  GROUP BY user_id
ON DUPLICATE KEY UPDATE nb_share = @nbshare

INSERT INTO ... SELECT ... ON DUPLICATE KEY

2 个答案: