Sql 获取编号为一对多表计数的所有记录

我有两张表，一张是会员，另一张是会员状态表。我需要获得处于相同状态的成员数的计数

成员

+----+-------------+-----------+---------+--------+--------+--------------+---------+---------------------+---------------------+
| id | full_name   | mobile_no | address | status | remark | edit_user_id | user_id | created_at          | updated_at          |
+----+-------------+-----------+---------+--------+--------+--------------+---------+---------------------+---------------------+
|  1 | John Doe    | 123       |         | 1      |        |            1 |       1 | 2014-06-19 15:51:08 | 2014-06-19 15:51:08 |
|  2 | Michael Bay | 123       |         | 1      |        |            1 |       1 | 2014-06-19 15:51:08 | 2014-06-19 15:51:08 |
|  3 | Hey Hey     | 123       |         | 3      |        |            1 |       1 | 2014-06-19 15:51:08 | 2014-06-19 15:51:08 |
+----+-------------+-----------+---------+--------+--------+--------------+---------+---------------------+---------------------+

会员资格

+----+---------------------+----------------------+--------+--------------+---------+---------------------+---------------------+
| id | name                | description          | status | edit_user_id | user_id | created_at          | updated_at          |
+----+---------------------+----------------------+--------+--------------+---------+---------------------+---------------------+
|  1 | Visitor             | Visitor              | 1      |            1 |       1 | 2014-06-19 15:51:08 | 2014-06-19 15:51:08 |
|  3 | Member              | Member               | 1      |            1 |       1 | 2014-06-19 15:51:08 | 2014-06-19 15:51:08 |
|  4 | Level 1             | Level 1              | 1      |            1 |       1 | 2014-06-19 15:51:08 | 2014-06-19 15:51:08 |
| 11 | Level 12            | Level 12             | 1      |            1 |       1 | 2014-07-03 17:27:00 | 2014-07-03 17:27:00 |
+----+---------------------+----------------------+--------+--------------+---------+---------------------+---------------------+

我尝试过这个查询，但它的输出不正确

select `member_status`.`name`, count(*) as totalNum
from member
right join `member_status` on (member.`status` = `member_status`.id) 
group by `member_status`.name

这是我想要的输出

+---------------------+----------+
| name                | totalNum |
+---------------------+----------+
| Level 1             |        0 |
| Level 12            |        0 |
| Member              |        1 |
| Visitor             |        2 |
+---------------------+----------+

然而，不知怎的，输出就是这个

+---------------------+----------+
| name                | totalNum |
+---------------------+----------+
| Level 1             |        1 |
| Level 12            |        1 |
| Member              |        1 |
| Visitor             |        2 |
+---------------------+----------+

---

任何人都可以提供建议吗？

您需要相关子查询以获得此类结果：

select      member_status.name, m.m_qty AS totalNum

from        member_status
left join   (
                select      member.status, count(member.id) AS m_qty
                from        member
                group by    member.status
            ) AS m ON (m.status = member_status.id) 

选择S.NAME，SUM（S.ID=T.STATUS时为1，否则为0结束）
来自成员_状态S、成员T
按S.NAME分组

这个怎么样：

select `member_status`.`name`, CASE WHEN member.`status` IS NULL THEN 0 ELSE count(*) as totalNum END
from member
right join `member_status` on (member.`status` = `member_status`.id) 
group by `member_status`.name, member.`status` 

试试看

从成员右键选择*加入成员状态（member.status=member\u status.id）

您将看到成员字段为NULL-s。 这就是为什么你得到了比你想要的更多的计数

解决方案之一：

选择member\u status.name，count（member.id）作为totalNum
从成员右侧加入成员状态（member.status=member\u status.id）
按成员分组\u状态。名称

或

选择member_status.name，sum（member.id为null时为0，否则为1 END）作为totalNum
从成员右侧加入成员状态（member.status=member\u status.id）
按成员分组\u状态。名称

是否有任何用于上述表的插入查询脚本或SQLFIDLE？您的SQL语法有错误；检查与您的MySQL服务器版本对应的手册，以了解在第1行的（member.

status

=

status

=

status

）上使用near'as totalNum END from members right join

member_status

的正确语法