[英]MySql Properly Join Complex Data/Tables
抽象:
每个客户都有一个特定的xml广告供稿(publisher_feed表)。 每次对该Feed进行查询或单击时,都会对其进行记录(publisher_stats_raw表)(每次查询/单击都会有多行,具体取决于客户端传递的subid(我们可以将这些点击加在一起))。 第二天,我们从API中提取统计信息以获取前几天的收入数字(rev_stats表)(每个收入统计信息可能有多行,具体取决于点击的国家/地区(我们可以将收入总计)。 试图将这三个表链接在一起以查找前一天每个客户端的平均RPC一直很困难。
表结构:
CREATE TABLE `publisher_feed` (
`publisher_feed_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`alias` varchar(45) DEFAULT NULL,
`user_id` int(10) unsigned DEFAULT NULL,
`remote_feed_id` int(10) unsigned DEFAULT NULL,
`subid` varchar(255) DEFAULT '',
`requirement` enum('tq','tier2','ron','cpv','tos1','tos2','tos3','pv1','pv2','pv3','ar','ht') DEFAULT NULL,
`status` enum('enabled','disabled') DEFAULT 'enabled',
`tq` decimal(4,2) DEFAULT '0.00',
`clicklimit` int(11) DEFAULT '0',
`prev_rpc` decimal(20,10) DEFAULT '0.0000000000',
PRIMARY KEY (`publisher_feed_id`),
UNIQUE KEY `alias_UNIQUE` (`alias`),
KEY `publisher_feed_idx` (`remote_feed_id`),
KEY `publisher_feed_user` (`user_id`),
CONSTRAINT `publisher_feed_feed` FOREIGN KEY (`remote_feed_id`) REFERENCES `remote_feed` (`remote_feed_id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
CONSTRAINT `publisher_feed_user` FOREIGN KEY (`user_id`) REFERENCES `user` (`user_id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=124 DEFAULT CHARSET=latin1$$
CREATE TABLE `publisher_stats_raw` (
`publisher_stats_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`unique_data` varchar(350) NOT NULL,
`publisher_feed_id` int(10) unsigned DEFAULT NULL,
`date` date DEFAULT NULL,
`subid` varchar(255) DEFAULT NULL,
`queries` int(10) unsigned DEFAULT '0',
`impressions` int(10) unsigned DEFAULT '0',
`clicks` int(10) unsigned DEFAULT '0',
`filtered` int(10) unsigned DEFAULT '0',
`revenue` decimal(20,10) unsigned DEFAULT '0.0000000000',
PRIMARY KEY (`publisher_stats_id`),
UNIQUE KEY `unique_data_UNIQUE` (`unique_data`),
KEY `publisher_stats_raw_remote_feed_idx` (`publisher_feed_id`)
) ENGINE=InnoDB AUTO_INCREMENT=472 DEFAULT CHARSET=latin1$$
CREATE TABLE `rev_stats` (
`rev_stats_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`date` date DEFAULT NULL,
`remote_feed_id` int(10) unsigned DEFAULT NULL,
`typetag` varchar(255) DEFAULT NULL,
`subid` varchar(255) DEFAULT NULL,
`country` varchar(2) DEFAULT NULL,
`revenue` decimal(20,10) DEFAULT NULL,
`tq` decimal(4,2) DEFAULT NULL,
`finalized` int(11) DEFAULT '0',
PRIMARY KEY (`rev_stats_id`),
KEY `rev_stats_remote_feed_idx` (`remote_feed_id`),
CONSTRAINT `rev_stats_remote_feed` FOREIGN KEY (`remote_feed_id`) REFERENCES `remote_feed` (`remote_feed_id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=58 DEFAULT CHARSET=latin1$$
内容:
每个remote_feed都有一个特定的subid / typetag。 因此,我们需要将publisher_feed表中的remote_feed_id和subid列与收入统计表中的remote_feed_id和typetag列进行匹配。
我目前无法使用的实现:
SELECT
pf.publisher_feed_id, psr.date, sum(clicks), sum(rs.revenue)
FROM
xml_network.publisher_feed pf
JOIN
xml_network.publisher_stats_raw psr
ON
psr.publisher_feed_id = pf.publisher_feed_id
JOIN
xml_network.rev_stats rs
ON
rs.remote_feed_id = pf.remote_feed_id
WHERE
pf.requirement = 'tq'
AND
pf.subid = rs.typetag
AND
psr.date <> date(curdate())
GROUP BY
psr.date
ORDER BY
psr.date DESC
LIMIT 1;
上面的代码不断从rev_stats表中拉出错误的数据(将正确的统计信息相加,但由于连接而将其重复一次)。 任何有关如何正确提取正确数据的帮助都将非常有帮助(我可以使用多个查询和PHP来获取正确的结果,但是这样做的乐趣是什么!)
想出一种方法来实现这一目标。 它的def绝对不是一种快速的方法,需要4个选择才能完成,但是它可以完美工作=)
SELECT
pf.publisher_feed_id,
round(
(
SELECT
SUM(rs.revenue)
FROM
xml_network.rev_stats rs
WHERE
rs.remote_feed_id = pf.remote_feed_id
AND
rs.typetag = pf.subid
AND
rs.date = subdate(current_date, 1)
),10)as revenue,
(
SELECT
MAX(rs.tq)
FROM
xml_network.rev_stats rs
WHERE
rs.remote_feed_id = pf.remote_feed_id
AND
rs.typetag = pf.subid
AND
rs.date = subdate(current_date, 1)
) as tq,
(
SELECT
SUM(psr.clicks)-SUM(psr.filtered)
FROM
xml_network.publisher_stats_raw psr
WHERE
psr.publisher_feed_id = pf.publisher_feed_id
AND
psr.date = subdate(current_date, 1)
) as clicks
FROM
xml_network.publisher_feed pf
WHERE
pf.requirement = 'tq';
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