Question

我如何多次返回同一行？我尝试使用wherein('table' , \Session::get('memory'))，但它只返回非重复项。据我所知，联盟可以实现，但我很困惑如何实现它。

有人可以帮帮我吗？

会话数组：

 array:5 [▼
      0 => "addon-0a65729-aak"
      1 => "visiontek-900379"
      2 => "addon-0a65729-aak"
      3 => "addon-0a65729-aak"
      4 => "addon-0a65729-aak"
    ]

查询我到目前为止

 $memory = \DB::table('memory')->leftjoin('price', 'price.part_number' , '=', 'memory.part_number')->groupby('memory.part_number')
  ->select(
  'memory.part_number as part_number',
  \DB::raw('min(price.price) as price'),
  'price.url as url',
  'memory.slug as slug');

  foreach (\Session::get('memory') as $key) {      
     $memory = $memory->union($memory)->where('memory.slug', $key);    
  }

  $memory = $memory->get();

查询将返回的正确输出：

   ------------------------------------------------
   | part-Number| Price | URL   |       SLUG      |
   |----------------------------------------------|
   |111111     | 123.3 |http://| addon-0a65729-aak|
   |133111     | 145.3 |http://| visiontek-900379 |
   |111111     | 123.3 |http://| addon-0a65729-aak|
   |111111     | 123.3 |http://| addon-0a65729-aak| 
   |111111     | 123.3 |http://| addon-0a65729-aak|
   ------------------------------------------------

修改

记忆表：

memory  table
==================================================
id |   part_number   |           Slug
==================================================
1  |CMZ8GX3M2A1600C9  | corsair-cmz8gx3m2a1600c9
2  |F4-3200C16D-16GVK | gskill-f4-3200c16d-16gvk
3  |F3-12800CL9D-8GBRL| gskill-f3-12800cl9d-8gbrl
4  |CMK32GX4M2A2666C16| gskill-f3-1600c9d-8gao
5  |F3-12800CL9D-8GBXL| gskill-f3-12800cl9d-8gbxl
6  |F4-2400C15D-16GVR | gskill-f4-2400c15d-16gvr
7  |F4-2666C15Q-32GRKB| gskill-f4-2666c15q-32grkb
8  |F3-1600C11D-8GNT  | gskill-f3-1600c11d-8gnt
9  |CMX4GX3M2A1333C8  | corsair-cmx4gx3m2a1333c8
10 |F4-3000C14Q-32GVK | gskill-f4-3000c14q-32gvk

价格表

Price table 
==================================================
id |   part_number   |   price    |    url
==================================================
1  |CMZ8GX3M2A1600C9  |  122.33   | http:store_url
2  |CMZ8GX3M2A1600C9  |  222.33   | http:store_url
3  |CMZ8GX3M2A1600C9  |  551.00   | http:store_url
4  |CMK32GX4M2A2666C16|  1999.99  | http:store_url
5  |F3-12800CL9D-8GBXL|  222.01   | http:store_url    
6  |F4-2400C15D-16GVR |   800     | http:store_url
7  |CMZ8GX3M2A1600C9  |  19.99    | http:store_url                        
8  |F3-1600C11D-8GNT  |  16.05    | http:store_url
9  |F4-3000C14Q-32GVK |  990.15   | http:store_url
==================================================

会话数组

Session array -

array (
CMZ8GX3M2A1600C9
CMZ8GX3M2A1600C9
CMZ8GX3M2A1600C9
CMZ8GX3M2A1600C9
F3-12800CL9D-8GBXL
CMZ8GX3M2A1600C9
F4-3000C14Q-32GVK 
F3-12800CL9D-8GBXL
CMX4GX3M2A1333C8

  )

输出，它应该是什么样子

Output 
==========================================================================
part number       |   Price   |     url         |         Slug
==========================================================================
CMZ8GX3M2A1600C9  |  19.99    | http:store_url  | corsair-cmz8gx3m2a1600c9 //session val 0
CMZ8GX3M2A1600C9  |  19.99    | http:store_url  | corsair-cmz8gx3m2a1600c9 //session val 1
CMZ8GX3M2A1600C9  |  19.99    | http:store_url  | corsair-cmz8gx3m2a1600c9 //session val 2      
CMZ8GX3M2A1600C9  |  19.99    | http:store_url  | corsair-cmz8gx3m2a1600c9  
F3-12800CL9D-8GBXL|  222.01   | http:store_url  | gskill-f3-12800cl9d-8gbxl  
CMZ8GX3M2A1600C9  |  19.99    | http:store_url  | corsair-cmz8gx3m2a1600c9
F4-3000C14Q-32GVK |  990.15   | http:store_url  | gskill-f4-3000c14q-32gvk
F3-12800CL9D-8GBXL|  222.01   | http:store_url  | gskill-f3-12800cl9d-8gbxl  
CMX4GX3M2A1333C8  |  NULL     |   NULL          | corsair-cmx4gx3m2a1333c8  //session val n

编辑：找到解决方案 循环遍历会话数组和查询结果，并将值添加到新数组并将数组转换为对象。

$count = 0;

$newmemory = [];
foreach (\Session::get('memory') as $k => $v) {
foreach ($memory as $mem => $value) {

  if ($v == $value->slug) {
  foreach ($value as $key => $val) {

  $newmemory[$count][$key] = $val;
}

 }
  }
 $count++;
 }
$newmemory = json_decode(json_encode($newmemory));

Answer 1

现在这将是使用laravel 5.2获得预期结果的新查询。

$final="";
    $cnt=0;
    foreach ($array as $key => $value) {
        $memory = DB::table("price as p")
        ->leftjoin("memory as m","m.part_number","=","p.part_number")
        ->select('m.part_number as part_number', DB::raw('min(p.price) as price'),'p.url as url', 'm.slug as slug')
        ->where("m.slug","like","%".$value."%");
        if($cnt==0)
        {
            $cnt+=1;
            $final=$memory;
        }
        else
        {
            $final=$final->unionall($memory);
        }
    }

    $final=$final->get();

Answer 2

在您的查询中，如果您想要多个价格，则需要GroupBy（'Price'）

如果你想要最低的一个，你可以使用集合方法过滤或将Min（）语句放在DB :: raw（）

中

Laravel，mysql - 多次返回同一行

2 个答案: