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mysql - 如何为 SQL 查询编写 JOIN？

coder 2023-10-13 原文

我需要从 IP 获取国家/地区名称的功能。

我必须在我网站上的每一位唯一身份访问者面前展示这个国家。 (之前，我问过一个关于类似方法的问题，但我现在改变了它。)

我期望的输出如下:-

Country Visited | No. of Times
_______________________________
United States   |   482
Korea           |   213
Pakistan        |   123

....

输出显示 482 位独立访客来自美国，213 位来自韩国，等等。

为了实现这一点，我将这个任务分为两部分，首先获取唯一用户的所有 IP，第二部分是搜索带有国家/IP 信息的两个表以获取国家/地区。

然后，我们根据显示的顶部输出表汇总数据。我将展示我为每个部分编写的查询。下面，我展示了所用表格的结构和示例数据。

第一部分 - 在我的网站上获得唯一身份访问者

SELECT a.uid, a.hostname, COUNT( * ) AS times
FROM login_activity a
WHERE a.uid =83
GROUP BY a.hostname
ORDER BY times

这显示了如下输出。这意味着 ID 为 83 的用户对该网站进行了 80 次独立访问:

uid  | hostname         | times
-------------------------------------
83   |  157.191.122.36  | 80

这是错误的，因为我应该得到拒绝。每个 IP 的点击率。但不知何故我无法这样做。

第二部分-根据IP寻找国家

SELECT cc, cn
FROM ip
NATURAL JOIN cc
WHERE INET_ATON(  "157.191.122.36" ) 
BETWEEN START AND END

这给我的输出是:

cc | cn
--------
US | United States

这是正确的，因为它根据提供的 IP 为我提供了正确的国家/地区。

借助上面显示的这三个表和两个查询，我需要显示以下结果:

Country Visited | No. of Times
_______________________________
United States   |   482
Korea           |   213
Pakistan        |   123

....

附录(表的结构和数据)

登录事件

(结构)

CREATE TABLE IF NOT EXISTS `mslop_login_activity` (
  `aid` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'The primary identifier for an activity (session).',
  `uid` int(10) unsigned NOT NULL DEFAULT '0' COMMENT 'The mslop_users.uid corresponding to a session, or 0 for anonymous user.',
  `host_user_agent` varchar(256) NOT NULL DEFAULT '' COMMENT '$_SERVER["HOST_USER_AGENT"] string. This can be used with get_browser() in PHP.',
  `hostname` varchar(128) NOT NULL DEFAULT '' COMMENT 'The IP address that was used for this session.',
  `timestamp` int(11) NOT NULL DEFAULT '0' COMMENT 'The UNIX timestamp when the session was started.',
  PRIMARY KEY (`aid`),
  KEY `aid` (`aid`),
  KEY `uid` (`uid`),
  KEY `timestamp` (`timestamp`)
);

(数据)

INSERT INTO `mslop_login_activity` (`aid`, `uid`, `host_user_agent`, `hostname`, `timestamp`) VALUES
(1, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:19.0) Gecko/20100101 Firefox/19.0', '172.24.1.143', 1363038356),
(873, 4, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1369773601),
(883, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1369774959),
(893, 83, 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31', '157.191.122.36', 1369818602),
(903, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB7.4; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1369838690),
(913, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB7.4; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0; AskTbORJ/5.15.23.36191)', '157.191.122.36', 1369840224),
(923, 83, 'Mozilla/5.0 (Windows NT 6.1; rv:21.0) Gecko/20100101 Firefox/21.0', '157.191.122.36', 1369841748),
(933, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1370255417),
(943, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)', '157.191.122.36', 1370258059),
(953, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)', '157.191.122.36', 1370258060),
(963, 93, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; AskTbORJ/5.15.15.36191)', '157.191.122.36', 1370299827),
(973, 93, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; AskTbORJ/5.15.15.36191)', '157.191.122.36', 1370299852),
(983, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1370299899),
(993, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1370299920),
(1003, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1370299995),
(1013, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370319811),
(1023, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370319835),
(1033, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370319939),
(1043, 83, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370320312),
(1053, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370320640),
(1063, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370320713),
(1073, 83, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370363702),
(1083, 83, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370363987),
(1093, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370364021),
(1103, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370364028),
(1113, 83, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370365896),
(1123, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370366087),
(1133, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1370367070),
(1143, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370368567),
(1153, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36', '157.191.122.36', 1370368575),
(1163, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1370379345),
(1173, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB7.4; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1370427302),
(1183, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; .NET CLR 1.1.4322)', '157.191.122.36', 1370503422),
(1193, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1370534329),
(1203, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1370866207),
(1213, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; .NET CLR 1.1.4322)', '157.191.122.36', 1370871353),
(1223, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; chromeframe/26.0.1410.43; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1370877702),
(1233, 83, 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36', '157.191.122.36', 1371015245),
(1243, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; Tablet PC 2.0)', '157.191.122.36', 1371069245),
(1253, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)', '157.191.122.36', 1371117509),
(1263, 83, 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36', '157.191.122.36', 1371137716),
(1273, 83, 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)', '157.191.122.36', 1371197327),
(1283, 83, 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36', '157.191.122.36', 1371427531),
(1293, 83, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)', '157.191.122.36', 1371552899),
(1303, 83, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)', '157.191.122.36', 1371635304),
(1313, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1371770752),
(1323, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1371771394),
(1333, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36', '157.191.122.36', 1371771647),
(1343, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/536.26.17 (KHTML, like Gecko) Version/6.0.2 Safari/536.26.17', '157.191.122.36', 1371772611),
(1353, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/536.26.17 (KHTML, like Gecko) Version/6.0.2 Safari/536.26.17', '157.191.122.36', 1371772626),
(1363, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36', '157.191.122.36', 1371772931),
(1373, 93, 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SIMBAR={37EF0ACB-CCB3-11E2-9611-E006E6BAE768}; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; AskTbORJ/5.15.15.36191)', '157.191.122.36', 1371782438),
(1383, 93, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.59.8 (KHTML, like Gecko) Version/5.1.9 Safari/534.59.8', '157.191.122.36', 1371782562),
(1393, 3, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36', '157.191.122.36', 1371790767),
(1403, 83, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/536.26.17 (KHTML, like Gecko) Version/6.0.2 Safari/536.26.17', '157.191.122.36', 1371834780);

抄送

(结构)

CREATE TABLE cc (
        ci TINYINT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
        cc CHAR(2) NOT NULL,
        cn VARCHAR(50) NOT NULL
        );

(数据)

因为它很大，你可以通过这个链接下载它:-

http://d.pr/f/N3KT

IP

(结构)

CREATE TABLE ip (
        start INT UNSIGNED NOT NULL,
        end INT UNSIGNED NOT NULL,
        ci TINYINT UNSIGNED NOT NULL
        );

(数据)

因为它很大，你可以通过这个链接下载它:-

http://d.pr/f/wcEy .

最佳答案

尝试以下查询:

SELECT cn As 'Country Visited', count(0) AS 'No. of Times'
FROM mslop_login_activity a
INNER JOIN ip ON ( INET_ATON(a.hostname) BETWEEN START AND END )
NATURAL JOIN CC
GROUP BY cn

关于mysql - 如何为 SQL 查询编写 JOIN？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17249169/

何为编写39MozillaNETmysqlsql

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