在PHP MySQL上显示、连接、计数和分组6个表

我在用php和mysql显示、连接和分组6个表时遇到问题

我的桌子

• loker_工作：id_工作、slug_工作、职位、部门、级别、位置

• loker_部门：id_部门，名称_部门

• loker_级别：id_级别、名称_级别

• loker_位置：id_位置、名称_位置

• loker_申请人：身份证、工作、文件

• loker_用户：id_用户，名称

我的查询

SELECT 
loker_job.slug_job,
loker_level.name_level,
loker_location.name_location,
loker_department.name_department,
loker_user.name,
loker_applicant.file,
count(*) as total_applicant
FROM
loker_job
LEFT JOIN loker_department ON loker_department.id_department =    loker_job.department
LEFT JOIN loker_level ON loker_level.id_level = loker_job.`level`
LEFT JOIN loker_location ON loker_location.id_location = loker_job.location
LEFT JOIN loker_user ON loker_user.id_user = loker_job.publisher
LEFT JOIN loker_applicant ON loker_applicant.id_job = loker_job.slug_job
GROUP by loker_job.slug_job

我想要这样的结果：

+----------+-----------------+-----------------+---------------+----------------------+-----------------+
| slug_job | name_level      | name_department | name_location | name_position        | total applicant |
+----------+-----------------+-----------------+---------------+----------------------+-----------------+
| 1111     | General Manager | Marketing       | America       | Vice General Manager | 3               |
| 2222     | E-officer       | Ecommerce       | Japan         | Officer              | 1               |
| 3333     | General Manager | Sales           | Rusia         | Vice General Manager | 0               |
| 4444     | General Manager | Marketing       | America       | Vice General Manager | 3               |
+----------+-----------------+-----------------+---------------+----------------------+-----------------+

结果

但是，我得到的结果是：

• 有一行或多行始终结果为1总申请者，尽管从db显示0或无
• 总计行不正确，总计数据中始终为-1

任何帮助都将不胜感激，感谢您首先使用“loker_user”表，并使用关系表进行外部联接。根据以下描述：

SELECT loker_job.slug_job, loker_level.name_level, loker_location.name_location,
loker_department.name_department, A.name, loker_applicant.file, IFNULL(A.total_applicant,0) as total_applicant
FROM loker_job
LEFT OUTER JOIN loker_department ON loker_department.id_department =   loker_job.department
LEFT OUTER JOIN loker_level ON loker_level.id_level = loker_job.`level`
LEFT OUTER JOIN loker_location ON loker_location.id_location = loker_job.location
LEFT OUTER JOIN loker_applicant ON loker_applicant.id_job = loker_job.slug_job
LEFT OUTER JOIN (
select id_user,name, count(*) as total_applicant from loker_user group by id_user, name
) as A ON A.id_user = loker_job.publisher

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它在“on子句”中将列名从“a.loker_job”更新为“loker_job.loker_job”中显示未知列“a.publisher”。