如何在laravel where子句中使用“ CONCAT”而不使用模型

Question

I have a table ('mbo_party') where has two column first and last (I have used first to store firstname, last to store lastname). Suppose I store Debanjan in column 'first' and Ganguly in 'last'. So in search field if one search by 'Debanjan Ganguly', how do I get all the data from that column. I am using laravel 5.4, I am not using any model. I write query in my controller. Here's my code so far...

Controller

    $party_name = $request->get('party_name');
        $query = DB::table('mbo_party')->where('concat(first," ",last)' , '=' , $party_name)->first();

View

    <form id="party_search_it" method="GET" action="{{route('mbo-index')}}"> 
        {{ csrf_field() }}
        <input type="text" class="form-control" name="party_name" placeholder="Search for Party Name..." autocomplete="off">
    </form>

My Table View Here's my Table View

In this method when I am using echo in controller , it is showing blank.

    echo"<pre>";print_r($query);die;

I want to know what is correct syntax for performing this kind of operation

Answer 1

尝试这个

$query = DB::table('mbo_party')->where(DB::raw("CONCAT(first,' ',last)"), 'LIKE', '%' . $party_name . '%')->first();

Answer 2

这应该工作：

$query = DB::table('mbo_party')->whereRaw('CONCAT(`first`," ",`last`) = "' . $party_name . '"'))->first();