SQLSTATE[23000]：违反完整性约束：1052 列 'id' 在 where 子句中不明确

Question

当我在 Laravel 中使用另一个 table 的 ID 显示 table 的名称时，我这样声明。但是当我想获取id进行编辑的时候，报错就像标题一样。请帮助我，我非常感谢。

Controller public 函数 manage_departments(){

    $manage_departments=DB::table('departments')
    ->join('faculties','faculties.id','=','departments.faculty_id')
    ->orderBy('departments.created_at','desc')->get();

    $all_manage_departments=view('admin.manage-departments')->with('manage_departments', $manage_departments);

    return view('layouts.master')->with('admin.manage-departments', $all_manage_departments);
}

Answer 1

您的查询生成器中没有 select。正如 laravel doc 所说，您可以在 select 方法中指定要 select 的内容。我以selectfaculties.id和departments.id为例。

DB::table('departments')
    ->select('faculties.id','departments.id')
    ->join('faculties','faculties.id','=','departments.faculty_id')
    ->orderBy('departments.created_at','desc')->get();

SQLSTATE[23000]：违反完整性约束：1052 列 'id' 在 where 子句中不明确

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'id' in where clause is ambiguous

laravel

laravel-6