题目：对于申请参与比赛的用户，blog_url字段中url字符后的字符串为用户个人博客的用户名，现在运营想要把用户的个人博客用户字段提取出单独记录为一个新的字段，请取出所需数据。 示例：user_submit device_id profile blog_url 2138 180cm,75kg,27,male http:urlbisdgboy777 3214 165cm,45kg,26,female http:urldkittycc 6543 178cm,65kg,25,male http:urltigaer 4321 171 cm,55kg,23,female http:urluhksd 2131 168cm,45kg,22,female http:urlsydney 根据示例，你的查询应返回以下结果： device_id user_name 2138 bisdgboy777 3214 dkittycc 6543 tigaer 4321 uhsksd 2131 sydney
示例1
输入
drop table if exists user_submit;
CREATE TABLE `user_submit` (
`id` int NOT NULL,
`device_id` int NOT NULL,
`profile` varchar(100) NOT NULL,
`blog_url` varchar(100) NOT NULL
);
INSERT INTO user_submit VALUES(1,2138,'180cm,75kg,27,male','http:/url/bisdgboy777');
INSERT INTO user_submit VALUES(1,3214,'165cm,45kg,26,female','http:/url/dkittycc');
INSERT INTO user_submit VALUES(1,6543,'178cm,65kg,25,male','http:/url/tigaer');
INSERT INTO user_submit VALUES(1,4321,'171cm,55kg,23,female','http:/url/uhsksd');
INSERT INTO user_submit VALUES(1,2131,'168cm,45kg,22,female','http:/url/sysdney');
输出
2138|bisdgboy777
3214|dkittycc
6543|tigaer
4321|uhsksd
2131|sysdney
加载中...