我在mysql中有这些表： 所有用户在网站上注册的表用户， 表配置文件和列出组表的表组。
我的用户可以注册并提交童年等组。
我想从groups表（profile_childhood，profile_classmate，..）中选择userid，并从用户名和用户名中选择用户名 并指定他们提交的组！
并导致php（BY mysql）：
“d yar”是在同学，童年和军事团体中提交的
“bob”是在同学和儿童团体中提交的
在mysql中：
mysql> select id, username from user;
+-----+----------------+
| id | username |
+-----+----------------+
| 96 | didar |
| 97 | amirecoy |
| 98 | rayan |
| 122 | aaaa |
| 123 | bbbb |
| 124 | cccc |
+-----+----------------+
mysql> select userid, name from profile;
+--------+-----------+
| userid | name |
+--------+-----------+
| 96 | d yar |
| 97 | amir |
| 98 | rayan |
| 122 | alex |
| 123 | bob |
| 124 | captain |
+--------+-----------+
mysql> select t_name, name from groups;
+-------------------+----------------+
| t_name | name |
+-------------------+----------------+
| profile_classmate | classmate |
| profile_martial | martial_status |
| profile_retiree | retiree |
| profile_childhood | childhood |
+-------------------+----------------+
mysql> select userid from profile_classmate;
+--------+
| userid |
+--------+
| 96 |
| 123 |
+--------+
mysql> select userid from profile_childhood;
+--------+
| userid |
+--------+
| 96 |
| 98 |
| 122 |
| 123 |
| 124 |
+--------+
mysql> select userid from profile_martial;
+--------+
| userid |
+--------+
| 96 |
+--------+