Mysql 内连接多个

Question

所以我有 3 张 table 。第一个表有 2 个外键，外键内部还有另一个外键。

(抱歉英语不好)

示例:

First table: table1
Foreign keys: 
ID from table1 (I will get the employee name)
ID from table2 (I will get the job name)

Answer 1

我认为您只是缺少一个 JOIN:

SELECT 
    tbl_job_site.JOB_NAME, 
    tbl_employee.EMP_CODIGO, 
    tbl_company.COM_CODIGO
FROM tbl_job_running jr
   INNER JOIN tbl_employee e ON jr.EMP_CODIGO = e.EMP_CODIGO
   INNER JOIN tbl_job_site js ON jr.JOB_CODIGO = js.JOB_CODIGO
   INNER JOIN tbl_company c ON c.COM_CODIGO = e.COM_CODIGO

• A Visual Explanation of SQL Joins