php - 如何解决违反完整性约束的问题 : 1052 Column 'id' in where clause is ambiguous in laravel

Question

我有一个 属于许多 学生和部门之间的关系。 现在我想获取所有部门的subject_id为空的学生部门 .我下面的代码，但它给了我以下错误

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'id' in where clause is ambiguous (SQL: select * from departments where subject_id is null and exists (select * from students inner join department_student on students.id = department_student.student_id where departments.id = department_student.department_id and id = 16 and students.deleted_at is null))

$departments=Department::where('subject_id','=',null)
                        ->whereHas('students',function($student){
                            $student->where('id',Auth::id());
                        })
                        ->get();
dd($departments);

任何帮助将不胜感激

Answer 1

您应该指定引用 id 的表名。以避免歧义。

$departments=Department::where('subject_id','=',null)
->whereHas('students',function($student){ 
      $student->where('student.id',Auth::id()); //Notice the student.id instead of id
  })->get();