mysql 分数表实现排名

首先初始化一张表

DROP TABLE IF EXISTS `lq_wx_sign`;
CREATE TABLE `lq_wx_sign` (
`id` int(2) unsigned NOT NULL AUTO_INCREMENT COMMENT ‘主键ID‘,
`name` varchar(30) NOT NULL COMMENT ‘用户名‘,
`open_id` varchar(64) NOT NULL DEFAULT ‘‘ COMMENT ‘用户open_id‘,
`img_url` varchar(1024) NOT NULL DEFAULT ‘‘ COMMENT ‘头像地址‘,
`addr` varchar(1024) NOT NULL DEFAULT ‘‘ COMMENT ‘地址‘,
`sex` varchar(8) NOT NULL DEFAULT ‘‘ COMMENT ‘性别‘,
`sign_time` datetime NOT NULL COMMENT ‘签到日期‘,
`points` int(11) NOT NULL DEFAULT ‘0‘ COMMENT ‘签到获取的积分‘,
PRIMARY KEY (`id`),
KEY `open_id` (`open_id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COMMENT=‘微信签到表‘;


INSERT INTO `lq_wx_sign` VALUES (null, ‘下一站‘, ‘o3p94s8nP6-doFTI4JYMWgXVJzio‘, ‘http://wx.qlogo.cn/mmopen/SMzokpibpAC17PUCyHbxKibViaHvbZxicUNMoiadBsCnwicNvwdXibhTzWmvJ9jdUWbs3iaMREeCxLweT8WVAibMleMy7jwlsNQ1SFQyS/0‘, ‘中国/广东/珠海‘, ‘男‘, ‘2015-08-04 18:14:22‘, ‘300‘);
INSERT INTO `lq_wx_sign` VALUES (‘null, ‘下一站×等待‘, ‘o3p94s8nP6-doFTI4JYMWgXVJzio‘, ‘http://wx.qlogo.cn/mmopen/SMzokpibpAC17PUCyHbxKibViaHvbZxicUNMoiadBsCnwicNvwdXibhTzWmvJ9jdUWbs3iaMREeCxLweT8WVAibMleMy7jwlsNQ1SFQyS/0‘, ‘中国/广东/珠海‘, ‘男‘, ‘2015-08-18 18:15:37‘, ‘61‘);
INSERT INTO `lq_wx_sign` VALUES (null, ‘下一站×等待@, ‘o3p94s8nP6-doFTI4JYMWgXVJzio‘, ‘http://wx.qlogo.cn/mmopen/SMzokpibpAC17PUCyHbxKibViaHvbZxicUNMoiadBsCnwicNvwdXibhTzWmvJ9jdUWbs3iaMREeCxLweT8WVAibMleMy7jwlsNQ1SFQyS/0‘, ‘中国/广东/珠海‘, ‘男‘, ‘2015-08-19 09:49:58‘, ‘38‘);
INSERT INTO `lq_wx_sign` VALUES (null, ‘xinya‘, ‘o3p94sxeXY956Kvdq3voRvOfh2ZU‘, ‘http://wx.qlogo.cn/mmopen/Q3auHgzwzM7ckBianmIw335AmWOyaw7Tn7Dn13u8zTQ70a418meIW1ekN4nvCy1qtUr8EKxHehG5nC91z7k0qSA/0‘, ‘中国/广东/珠海‘, ‘女‘, ‘2015-08-05 09:53:38‘, ‘300‘);
INSERT INTO `lq_wx_sign` VALUES (null, ‘xiang‘, ‘o3p94sxeXY956Kvdq3voRvOfh2ZU‘, ‘http://wx.qlogo.cn/mmopen/Q3auHgzwzM7ckBianmIw335AmWOyaw7Tn7Dn13u8zTQ70a418meIW1ekN4nvCy1qtUr8EKxHehG5nC91z7k0qSA/0‘, ‘中国/广东/珠海‘, ‘女‘, ‘2015-08-04 09:54:46‘, ‘70‘);
INSERT INTO `lq_wx_sign` VALUES (null, ‘xyang‘, ‘o3p94sxeXY956Kvdq3voRvOfh2ZU‘, ‘http://wx.qlogo.cn/mmopen/Q3auHgzwzM7ckBianmIw335AmWOyaw7Tn7Dn13u8zTQ70a418meIW1ekN4nvCy1qtUr8EKxHehG5nC91z7k0qSA/0‘, ‘中国/广东/珠海‘, ‘女‘, ‘2015-08-19 14:20:37‘, ‘49‘);
INSERT INTO `lq_wx_sign` VALUES (null, ‘xinyg‘, ‘o3p94sxeXY956Kvdq3voRvOfh2ZU‘, ‘http://wx.qlogo.cn/mmopen/Q3auHgzwzM7ckBianmIw335AmWOyaw7Tn7Dn13u8zTQ70a418meIW1ekN4nvCy1qtUr8EKxHehG5nC91z7k0qSA/0‘, ‘中国/广东/珠海‘, ‘女‘, ‘2015-08-20 14:42:45‘, ‘39‘);

 

在mysql中实现排名

 

set @rownum1=0;

select @rownum1:=@rownum1+1 as rownum,name,points from lq_wx_user_points order by points desc LIMIT 0,10;

 

实现个人查询排名

set @rownum=0; 
select * from (select @rownum:=@rownum+1 as rownum,name,points from lq_wx_user_points order by points desc LIMIT 0,10) as tp where name=‘下一站‘;

 

实现一条sql查询出排名

select * from ( select  (@rownum:=@rownum+1) as rownum,name,points from lq_wx_user_points ,( SELECT @rownum:=0) a order by points desc )as tp where name=‘下一站‘;