BigQuery 未运行我的 JOIN IN 代码，返回错误“无法识别的名称：[10:3] 的员工”

Question

我正在学习 Google 数据分析课程并遵循课程指南。

我正在尝试使用

JOIN IN

语法，但每次我尝试运行代码时都会收到错误，

Unrecognized name: employees at [10:3]

我的代码：

SELECT 
  employees.name AS employee_name,
  employees_role AS employee_role,
  departments.name AS department_name,

 FROM `western-will-410400.Employee_data`
 
 INNER JOIN
  Employee_data.Departments ON 
  employees.department_id = deparments.department.id 

我正在尝试学习如何执行语法

JOIN IN

，但它不起作用并给我这个错误消息。

Answer 1

您不能通过这种方式缩短表名，您需要为它们起别名

SELECT 
  employees.name AS employee_name,
  employees_role AS employee_role,
  departments.name AS department_name,

 FROM `western-will-410400.Employee_data` as employees
 
 INNER JOIN
  Employee_data.Departments as deparments ON 
  employees.department_id = deparments.department.id