显示基于id的一条记录

Question

I have two tables 'travel.request' table and 'traveling_details' table.

travel_request table
 id  name
  1  aa
  2  bb
 traveling_details table
  id travel_request_id(FK from travel_request)   country
   1      1                                         UK
   2      1                                         CL 
   3      2                                         Australia
   4      2                                         India     

I want to list only one records for travel_request_id 1 record for travel_request_id=1 and travel_request_id=2 along with travel_request table details and others

 $request = DB::table('travel_request')
        ->join('department', 'travel_request.department_id', '=', 'department.id')
        ->join('users', 'travel_request.approver_id', '=', 'users.id')
        ->join('travel_purpose', 'travel_request.travel_purpose_id', '=', 'travel_purpose.id')
        ->join('traveling_details', 'travel_request.id','=','traveling_details.travel_request_id' )
        ->join('country','country.id', '=', 'traveling_details.country_id')
        ->join('travel_request_status','travel_request.status_id', '=', 'travel_request_status.id')
        ->select('travel_request.*', 'travel_request.id as travel_id','department.name as dept_name','users.firstname as approver_name','travel_purpose.purpose','country.name as country_name','traveling_details.from_date','traveling_details.to_date','travel_request_status.status')->where('travel_request.requestor_id',$user_id)->paginate(2);  

this query displays all records in traveling_details table

Answer 1

You might've using any kind fo ORM for your DB transaction. Try to use LIMIT 1 in that query.