{"id":216,"date":"2025-02-26T22:14:19","date_gmt":"2025-02-26T13:14:19","guid":{"rendered":"https:\/\/hexis.jp\/?p=216"},"modified":"2025-02-26T23:04:49","modified_gmt":"2025-02-26T14:04:49","slug":"laravel-query-builder%e5%85%a5%e9%96%80%ef%bc%81%e5%9f%ba%e6%9c%ac%e6%a7%8b%e6%96%87%e3%81%8b%e3%82%89%e5%ae%9f%e8%b7%b5%e7%9a%84%e3%81%aa%e3%82%af%e3%82%a8%e3%83%aa%e3%81%be%e3%81%a7%e5%be%b9","status":"publish","type":"post","link":"https:\/\/hexis.jp\/?p=216","title":{"rendered":"Laravel Query Builder\u5165\u9580\uff01\u57fa\u672c\u69cb\u6587\u304b\u3089\u5b9f\u8df5\u7684\u306a\u30af\u30a8\u30ea\u307e\u3067\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"\n

1. \u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3<\/strong><\/h3>\n\n\n\n

Laravel\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001Eloquent ORM\u3068Query Builder\u306e2\u3064\u304c\u3042\u308a\u307e\u3059\u3002Eloquent\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u53d6\u308a\u3001\u30e2\u30c7\u30eb\u3092\u901a\u3058\u3066\u30c7\u30fc\u30bf\u3092\u64cd\u4f5c\u3057\u307e\u3059\u3002\u4e00\u65b9\u3067\u3001Query Builder\u306fSQL\u306b\u8fd1\u3044\u8a18\u8ff0\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u67d4\u8edf\u304b\u3064\u8efd\u91cf\u306a\u30af\u30a8\u30ea\u306e\u4f5c\u6210\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

Eloquent\u3068Query Builder\u306e\u9055\u3044<\/strong><\/h4>\n\n\n\n
\u7279\u5fb4<\/th>Eloquent ORM<\/th>Query Builder<\/th><\/tr><\/thead>
\u8a18\u8ff0\u30b9\u30bf\u30a4\u30eb<\/td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411<\/td>SQL\u306b\u8fd1\u3044<\/td><\/tr>
\u53ef\u8aad\u6027<\/td>\u9ad8\u3044\uff08Laravel\u3089\u3057\u3044\u8a18\u8ff0\uff09<\/td>SQL\u30e9\u30a4\u30af\u3067\u76f4\u611f\u7684<\/td><\/tr>
\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td>\u6bd4\u8f03\u7684\u9045\u3044\uff08\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u304c\u591a\u3044\uff09<\/td>\u8efd\u91cf\u3067\u9ad8\u901f<\/td><\/tr>
\u4f7f\u3044\u3069\u3053\u308d<\/td>\u5c0f\u301c\u4e2d\u898f\u6a21\u306e\u30c7\u30fc\u30bf\u51e6\u7406<\/td>\u5927\u91cf\u30c7\u30fc\u30bf\u3084\u30ab\u30b9\u30bf\u30e0\u30af\u30a8\u30ea<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Eloquent\u306f\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u7c21\u5358\u306b\u6271\u3048\u308b\u4e00\u65b9\u3067\u3001Query Builder\u306f\u3088\u308a\u8a73\u7d30\u306a\u30af\u30a8\u30ea\u3092\u69cb\u7bc9\u3067\u304d\u308b\u305f\u3081\u3001\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3084\u7279\u5b9a\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n

Query Builder\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8<\/strong><\/h4>\n\n\n\n
    \n
  1. SQL\u306b\u8fd1\u3044\u8a18\u8ff0\u304c\u53ef\u80fd<\/strong>\n
      \n
    • \u751f\u306eSQL\u3068\u4f3c\u305f\u66f8\u304d\u65b9\u3067\u3001Laravel\u306e\u4fbf\u5229\u6a5f\u80fd\u3082\u4f7f\u3048\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Eloquent\u3088\u308a\u8efd\u91cf<\/strong>\n
        \n
      • \u5fc5\u8981\u6700\u4f4e\u9650\u306e\u51e6\u7406\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3067\u304d\u308b\u305f\u3081\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • \u67d4\u8edf\u306a\u30af\u30a8\u30ea\u4f5c\u6210\u304c\u53ef\u80fd<\/strong>\n
          \n
        • \u30ab\u30b9\u30bf\u30e0\u30af\u30a8\u30ea\u3084\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u53d6\u5f97\u3092\u52b9\u7387\u7684\u306b\u8a18\u8ff0\u3067\u304d\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

          \u3053\u306e\u3088\u3046\u306b\u3001Query Builder\u306fEloquent\u3088\u308a\u3082\u4f4e\u30ec\u30d9\u30eb\u306a\u30c7\u30fc\u30bf\u64cd\u4f5c\u3092\u53ef\u80fd\u306b\u3057\u3064\u3064\u3001SQL\u3068\u540c\u69d8\u306e\u76f4\u611f\u7684\u306a\u66f8\u304d\u65b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

          <\/p>\n\n\n\n

          <\/span>2. Query Builder\u306e\u57fa\u672c\u69cb\u6587<\/strong><\/span><\/h2>\n\n\n\n

          Laravel\u306eQuery Builder\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001SQL\u306e\u3088\u3046\u306a\u30af\u30a8\u30ea\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u57fa\u672c\u7684\u306a\u30af\u30a8\u30ea\u306e\u66f8\u304d\u65b9\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

          2.1 \u30c7\u30fc\u30bf\u306e\u53d6\u5f97\uff08SELECT\uff09<\/strong><\/h3>\n\n\n\n

          \u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f DB::table('\u30c6\u30fc\u30d6\u30eb\u540d')<\/code> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

          use Illuminate\\Support\\Facades\\DB;\n\n\/\/ \u5168\u4ef6\u53d6\u5f97\n$users = DB::table('users')->get();\n\n\/\/ 1\u4ef6\u306e\u307f\u53d6\u5f97\n$user = DB::table('users')->where('id', 1)->first();<\/code><\/pre><\/div>\n\n\n\n
          \u30ab\u30e9\u30e0\u3092\u6307\u5b9a\u3057\u3066\u53d6\u5f97<\/strong><\/h4>\n\n\n\n
          \u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u306e\u307f\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f select()<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
          $users = DB::table('users')->select('id', 'name')->get();<\/code><\/pre><\/div>\n\n\n\n
          2.2 \u6761\u4ef6\u4ed8\u304d\u53d6\u5f97\uff08WHERE\uff09<\/strong><\/h3>\n\n\n\n
          \u30c7\u30fc\u30bf\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u306b\u306f where()<\/code> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
          \/\/ ID\u304c10\u306e\u30e6\u30fc\u30b6\u30fc\u3092\u53d6\u5f97\n$user = DB::table('users')->where('id', 10)->first();\n\n\/\/ \u5e74\u9f62\u304c20\u4ee5\u4e0a\u306e\u30e6\u30fc\u30b6\u30fc\u3092\u53d6\u5f97\n$users = DB::table('users')->where('age', '>=', 20)->get();<\/code><\/pre><\/div>\n\n\n\n
          \u8907\u6570\u306e\u6761\u4ef6\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n
          $users = DB::table('users')\n    ->where('age', '>=', 20)\n    ->where('status', 'active')\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
          2.3 \u4e26\u3073\u66ff\u3048\uff08ORDER BY\uff09<\/strong><\/h3>\n\n\n\n
          \u30c7\u30fc\u30bf\u306e\u4e26\u3073\u9806\u3092\u6307\u5b9a\u3059\u308b\u306b\u306f orderBy()<\/code> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
          \/\/ \u5e74\u9f62\u9806\u306b\u6607\u9806\u30bd\u30fc\u30c8\n$users = DB::table('users')->orderBy('age', 'asc')->get();\n\n\/\/ \u540d\u524d\u9806\u306b\u964d\u9806\u30bd\u30fc\u30c8\n$users = DB::table('users')->orderBy('name', 'desc')->get();<\/code><\/pre><\/div>\n\n\n\n
          2.4 \u30b0\u30eb\u30fc\u30d7\u5316\uff08GROUP BY\uff09<\/strong><\/h3>\n\n\n\n
          \u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u3054\u3068\u306b\u30c7\u30fc\u30bf\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5834\u5408\u306f groupBy()<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
          $users = DB::table('users')\n    ->select('age', DB::raw('count(*) as total'))\n    ->groupBy('age')\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
          2.5 \u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\uff08\u30da\u30fc\u30b8\u5206\u5272\uff09<\/strong><\/h3>\n\n\n\n
          \u30c7\u30fc\u30bf\u3092\u30da\u30fc\u30b8\u3054\u3068\u306b\u53d6\u5f97\u3059\u308b\u306b\u306f paginate()<\/code> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
          $users = DB::table('users')->paginate(10);<\/code><\/pre><\/div>\n\n\n\n
          \u3053\u308c\u306b\u3088\u308a\u30011\u30da\u30fc\u30b8\u306b10\u4ef6\u305a\u3064\u8868\u793a\u3059\u308b\u30c7\u30fc\u30bf\u304c\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
          <\/p>\n\n\n\n
          <\/span>3. \u5b9f\u8df5\u7684\u306a\u30af\u30a8\u30ea\u306e\u4f8b<\/strong><\/span><\/h2>\n\n\n\n
          \u3053\u3053\u3067\u306f\u3001Laravel\u306eQuery Builder\u3092\u4f7f\u3063\u3066\u3001\u3088\u308a\u5b9f\u8df5\u7684\u306a\u30af\u30a8\u30ea\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002\u30c6\u30fc\u30d6\u30eb\u306e\u7d50\u5408\uff08JOIN\uff09\u3001\u96c6\u8a08\u95a2\u6570\u3001\u30b5\u30d6\u30af\u30a8\u30ea<\/strong> \u306a\u3069\u3001\u5b9f\u969b\u306e\u958b\u767a\u3067\u5f79\u7acb\u3064\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
          3.1 \u30c6\u30fc\u30d6\u30eb\u306e\u7d50\u5408\uff08JOIN\uff09<\/strong><\/h3>\n\n\n\n
          \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u306f\u3001\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3057\u3066\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002Query Builder\u3067\u306f\u3001join()<\/code> \u3084 leftJoin()<\/code> \u3092\u4f7f\u3063\u3066\u7c21\u5358\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
          INNER JOIN\uff08\u5185\u90e8\u7d50\u5408\uff09<\/strong><\/h4>\n\n\n\n
          join()<\/code> \u3092\u4f7f\u3046\u3068\u3001\u6307\u5b9a\u3057\u305f\u30ab\u30e9\u30e0\u304c\u4e00\u81f4\u3059\u308b\u30c7\u30fc\u30bf\u306e\u307f\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
          $orders = DB::table('orders')\n    ->join('users', 'orders.user_id', '=', 'users.id')\n    ->select('orders.*', 'users.name as user_name')\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
          \u3053\u306e\u30af\u30a8\u30ea\u306f\u3001orders<\/code> \u30c6\u30fc\u30d6\u30eb\u3068 users<\/code> \u30c6\u30fc\u30d6\u30eb\u3092 user_id<\/code> \u3067\u7d50\u5408\u3057\u3001\u6ce8\u6587\u60c5\u5831\u3068\u30e6\u30fc\u30b6\u30fc\u540d\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
          LEFT JOIN\uff08\u5916\u90e8\u7d50\u5408\uff09<\/strong><\/h4>\n\n\n\n
          leftJoin()<\/code> \u3092\u4f7f\u3046\u3068\u3001\u7d50\u5408\u5148\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u30c7\u30fc\u30bf\u304c\u306a\u304f\u3066\u3082\u3001\u5143\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30c7\u30fc\u30bf\u306f\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
          $orders = DB::table('orders')\n    ->leftJoin('users', 'orders.user_id', '=', 'users.id')\n    ->select('orders.*', 'users.name as user_name')\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
          \u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u304c\u306a\u3044\u6ce8\u6587\u30c7\u30fc\u30bf\u3082\u53d6\u5f97\u3057\u305f\u3044\u5834\u5408\u306f\u3001leftJoin()<\/code> \u3092\u4f7f\u7528\u3059\u308b\u3068\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n
          \n\n\n\n
          3.2 \u96c6\u8a08\u95a2\u6570\uff08COUNT, SUM, AVG \u306a\u3069\uff09<\/strong><\/h3>\n\n\n\n
          Query Builder\u3067\u306f\u3001SQL\u306e\u96c6\u8a08\u95a2\u6570\u3092\u305d\u306e\u307e\u307e\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
          \u4ef6\u6570\u3092\u53d6\u5f97\uff08COUNT\uff09<\/strong><\/h4>\n\n\n\n
          \u7279\u5b9a\u306e\u6761\u4ef6\u306b\u5408\u3046\u30ec\u30b3\u30fc\u30c9\u306e\u4ef6\u6570\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f count()<\/code> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
          $userCount = DB::table('users')->count();<\/code><\/pre><\/div>\n\n\n\n
          \u5408\u8a08\u3092\u8a08\u7b97\uff08SUM\uff09<\/strong><\/h4>\n\n\n\n
          sum()<\/code> \u3092\u4f7f\u3046\u3068\u3001\u6570\u5024\u306e\u5408\u8a08\u5024\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
          $totalSales = DB::table('orders')->sum('amount');<\/code><\/pre><\/div>\n\n\n\n
          \u5e73\u5747\u3092\u53d6\u5f97\uff08AVG\uff09<\/strong><\/h4>\n\n\n\n
          avg()<\/code> \u3092\u4f7f\u3046\u3068\u3001\u5e73\u5747\u5024\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
          $averageAge = DB::table('users')->avg('age');<\/code><\/pre><\/div>\n\n\n\n
          \n\n\n\n
          3.3 \u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u3063\u305f\u30c7\u30fc\u30bf\u53d6\u5f97<\/strong><\/h3>\n\n\n\n
          \u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u3088\u308a\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u53d6\u5f97\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
          \u6700\u65b0\u306e\u6ce8\u6587\u3092\u53d6\u5f97\u3059\u308b\u30b5\u30d6\u30af\u30a8\u30ea<\/strong><\/h4>\n\n\n\n
          \u6700\u65b0\u306e\u6ce8\u6587\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u3001\u30b5\u30d6\u30af\u30a8\u30ea\u3092 selectSub()<\/code> \u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
          $latestOrders = DB::table('users')\n    ->select('users.id', 'users.name')\n    ->selectSub(function ($query) {\n        $query->from('orders')\n              ->whereColumn('orders.user_id', 'users.id')\n              ->select('created_at')\n              ->orderByDesc('created_at')\n              ->limit(1);\n    }, 'latest_order')\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
          \u3053\u306e\u30af\u30a8\u30ea\u3067\u306f\u3001\u5404\u30e6\u30fc\u30b6\u30fc\u306e\u6700\u65b0\u306e\u6ce8\u6587\u65e5\u6642\u3092\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
          \n\n\n\n
          \u307e\u3068\u3081<\/strong><\/h3>\n\n\n\n
            \n
          • JOIN \u3092\u6d3b\u7528<\/strong> \u3057\u3066\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b<\/li>\n\n\n\n
          • \u96c6\u8a08\u95a2\u6570\uff08COUNT\u3001SUM\u3001AVG \u306a\u3069\uff09<\/strong> \u3092\u4f7f\u3063\u3066\u7d71\u8a08\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b<\/li>\n\n\n\n
          • \u30b5\u30d6\u30af\u30a8\u30ea<\/strong> \u3092\u5229\u7528\u3057\u3066\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u53d6\u5f97\u3092\u884c\u3046<\/li>\n<\/ul>\n\n\n\n
            <\/p>\n\n\n\n
            <\/p>\n\n\n\n
            <\/span>4. \u3088\u304f\u3042\u308b\u30df\u30b9\u3068\u30a8\u30e9\u30fc\u306e\u56de\u907f\u65b9\u6cd5<\/strong><\/span><\/h2>\n\n\n\n
            Laravel\u306eQuery Builder\u306f\u4fbf\u5229\u3067\u3059\u304c\u3001\u9593\u9055\u3063\u305f\u4f7f\u3044\u65b9\u3092\u3059\u308b\u3068\u610f\u56f3\u3057\u306a\u3044\u7d50\u679c\u306b\u306a\u3063\u305f\u308a\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u60aa\u5316\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u3088\u304f\u3042\u308b\u30df\u30b9\u3068\u305d\u306e\u5bfe\u7b56<\/strong> \u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
            4.1 where()<\/code> \u306e\u6761\u4ef6\u30df\u30b9<\/strong><\/h3>\n\n\n\n
            where()<\/code> \u3092\u4f7f\u3046\u969b\u3001\u66f8\u304d\u65b9\u3092\u9593\u9055\u3048\u308b\u3068\u6b63\u3057\u304f\u30c7\u30fc\u30bf\u304c\u53d6\u5f97\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
            \u914d\u5217\u3092\u4f7f\u3063\u305f where()<\/code> \u306e\u30df\u30b9<\/strong><\/h4>\n\n\n\n
            \u4ee5\u4e0b\u306e\u3088\u3046\u306b where()<\/code> \u3067\u914d\u5217\u3092\u6e21\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u610f\u56f3\u3057\u305f\u52d5\u4f5c\u306b\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n
            \/\/ \u274c NG: \u3053\u308c\u306f\u52d5\u4f5c\u3057\u306a\u3044\n$users = DB::table('users')->where('id', [1, 2, 3])->get();<\/code><\/pre><\/div>\n\n\n\n
            \u3053\u306e\u5834\u5408\u3001SQL\u3067\u306f id = (1,2,3)<\/code> \u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u3001\u69cb\u6587\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002
            \u2705 \u6b63\u3057\u3044\u66f8\u304d\u65b9\uff08whereIn()<\/code> \u3092\u4f7f\u7528\uff09<\/strong><\/p>\n\n\n\n
            $users = DB::table('users')->whereIn('id', [1, 2, 3])->get();<\/code><\/pre><\/div>\n\n\n\n
            \n\n\n\n
            4.2 join()<\/code> \u306e\u30c7\u30fc\u30bf\u91cd\u8907\u30fbNULL\u5024\u554f\u984c<\/strong><\/h3>\n\n\n\n
            \u7d50\u5408\u3057\u305f\u30c7\u30fc\u30bf\u306e NULL \u5024\u306b\u6ce8\u610f<\/strong><\/h4>\n\n\n\n
            leftJoin()<\/code> \u3092\u4f7f\u3046\u3068\u3001\u7d50\u5408\u5148\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u30c7\u30fc\u30bf\u304c\u306a\u3044\u5834\u5408\u3001NULL\u304c\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
            $orders = DB::table('orders')\n    ->leftJoin('users', 'orders.user_id', '=', 'users.id')\n    ->select('orders.*', 'users.name as user_name')\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
            \u3053\u306e\u5834\u5408\u3001users<\/code> \u30c6\u30fc\u30d6\u30eb\u306b\u8a72\u5f53\u30e6\u30fc\u30b6\u30fc\u304c\u3044\u306a\u3044\u5834\u5408\u3001user_name<\/code> \u304c NULL<\/code> \u306b\u306a\u308a\u307e\u3059\u3002
            \u2705 NULL \u5024\u3092\u8003\u616e\u3057\u305f\u5bfe\u7b56<\/strong><\/p>\n\n\n\n
            $orders = DB::table('orders')\n    ->leftJoin('users', 'orders.user_id', '=', 'users.id')\n    ->select('orders.*', DB::raw("COALESCE(users.name, '\u30b2\u30b9\u30c8') as user_name"))\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
            COALESCE()<\/code> \u3092\u4f7f\u3046\u3053\u3068\u3067\u3001NULL \u306e\u5834\u5408\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\uff08\"\u30b2\u30b9\u30c8\"\uff09\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
            \n\n\n\n
            4.3 SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u306e\u30ea\u30b9\u30af<\/strong><\/h3>\n\n\n\n
            Query Builder\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u5bfe\u7b56\u304c\u65bd\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u751f\u306eSQL\u3092\u4f7f\u3046\u5834\u5408\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
            \u274c NG: \u76f4\u63a5SQL\u3092\u57cb\u3081\u8fbc\u3080\uff08\u5371\u967a\uff09<\/strong><\/h4>\n\n\n\n
            $name = $_GET['name']; \/\/ \u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u5165\u529b\n$users = DB::table('users')->whereRaw("name = '$name'")->get();<\/code><\/pre><\/div>\n\n\n\n
            \u3053\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001$name<\/code> \u306b\u4e0d\u6b63\u306aSQL\uff08'; DROP TABLE users; --<\/code> \u306a\u3069\uff09\u304c\u5165\u529b\u3055\u308c\u308b\u3068\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u7834\u58ca\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
            \u2705 \u6b63\u3057\u3044\u66f8\u304d\u65b9\uff08\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u4f7f\u7528\uff09<\/strong><\/h4>\n\n\n\n
            $users = DB::table('users')->whereRaw("name = ?", [$name])->get();<\/code><\/pre><\/div>\n\n\n\n
            \u3053\u306e\u3088\u3046\u306b ?<\/code> \u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u3092\u4f7f\u3046\u3068\u3001\u5b89\u5168\u306b\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
            \n\n\n\n
            4.4 N+1 \u554f\u984c\u3068\u5bfe\u7b56<\/strong><\/h3>\n\n\n\n
            N+1 \u554f\u984c\u3068\u306f\uff1f<\/strong><\/h4>\n\n\n\n
            where()<\/code> \u3092\u7e70\u308a\u8fd4\u3057\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u3068\u3001\u7121\u99c4\u306a\u30af\u30a8\u30ea\u304c\u5927\u91cf\u306b\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
            $users = DB::table('users')->get();\n\nforeach ($users as $user) {\n    $orders = DB::table('orders')->where('user_id', $user->id)->get();\n}<\/code><\/pre><\/div>\n\n\n\n
            \u3053\u306e\u5834\u5408\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u6570\u3060\u3051 orders<\/code> \u30c6\u30fc\u30d6\u30eb\u306b\u30af\u30a8\u30ea\u304c\u767a\u884c\u3055\u308c\u308b\u305f\u3081\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u60aa\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
            \u2705 \u4e8b\u524d\u306b\u30c7\u30fc\u30bf\u3092\u7d50\u5408\u3057\u3066\u53d6\u5f97<\/strong><\/h4>\n\n\n\n
            $users = DB::table('users')\n    ->leftJoin('orders', 'users.id', '=', 'orders.user_id')\n    ->select('users.*', 'orders.id as order_id', 'orders.amount')\n    ->get();<\/code><\/pre><\/div>\n\n\n\n
            \u3053\u308c\u306b\u3088\u308a\u30011\u56de\u306e\u30af\u30a8\u30ea\u3067\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3067\u304d\u3001N+1\u554f\u984c\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
            \n\n\n\n
            <\/span>\u307e\u3068\u3081<\/strong><\/span><\/h2>\n\n\n\n
              \n
            • whereIn() \u3092\u6b63\u3057\u304f\u4f7f\u3046<\/strong>\uff08where('id', [1,2,3])<\/code> \u306fNG\uff09<\/li>\n\n\n\n
            • NULL\u5024\u3092\u8003\u616e\u3057\u3066 COALESCE()<\/code> \u3092\u4f7f\u3046<\/strong><\/li>\n\n\n\n
            • SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u5bfe\u7b56\u3068\u3057\u3066 ?<\/code> \u3092\u4f7f\u3063\u305f\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u3059\u308b<\/strong><\/li>\n\n\n\n
            • N+1\u554f\u984c\u3092\u907f\u3051\u308b\u305f\u3081\u306b JOIN \u3092\u6d3b\u7528\u3059\u308b<\/strong><\/li>\n<\/ul>\n\n\n\n
              \u3053\u308c\u3089\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u62bc\u3055\u3048\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u3067\u52b9\u7387\u7684\u306aQuery Builder\u306e\u4f7f\u3044\u65b9\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
              <\/p>\n\n\n\n
              <\/span>5. \u307e\u3068\u3081<\/strong><\/span><\/h2>\n\n\n\n
              \u672c\u8a18\u4e8b\u3067\u306f\u3001Laravel\u306eQuery Builder\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u304b\u3089\u3001\u5b9f\u8df5\u7684\u306a\u30af\u30a8\u30ea\u306e\u8a18\u8ff0\u65b9\u6cd5\u3001\u3055\u3089\u306b\u306f\u3088\u304f\u3042\u308b\u30df\u30b9\u306e\u56de\u907f\u65b9\u6cd5\u307e\u3067\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
              5.1 Query Builder\u306e\u30e1\u30ea\u30c3\u30c8<\/strong><\/h3>\n\n\n\n
              Query Builder\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002
              \u2705 SQL\u306b\u8fd1\u3044\u8a18\u8ff0\u304c\u3067\u304d\u308b<\/strong> \u2192 \u67d4\u8edf\u306a\u30af\u30a8\u30ea\u3092\u7c21\u5358\u306b\u4f5c\u6210\u53ef\u80fd
              \u2705 Eloquent\u3088\u308a\u8efd\u91cf\u3067\u9ad8\u901f<\/strong> \u2192 \u5927\u91cf\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306b\u9069\u3057\u3066\u3044\u308b
              \u2705 \u5b89\u5168\u6027\u304c\u78ba\u4fdd\u3055\u308c\u3066\u3044\u308b<\/strong> \u2192 \u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u6a5f\u80fd\u3067SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3092\u9632\u6b62<\/p>\n\n\n\n
              \u4e00\u65b9\u3067\u3001\u30c7\u30fc\u30bf\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u6271\u3046\u5834\u5408\u306fEloquent\u306e\u65b9\u304c\u4fbf\u5229<\/strong> \u306a\u306e\u3067\u3001\u9069\u6750\u9069\u6240\u3067\u4f7f\u3044\u5206\u3051\u308b\u306e\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
              \n\n\n\n
              5.2 Eloquent\u3068Query Builder\u306e\u4f7f\u3044\u5206\u3051<\/strong><\/h3>\n\n\n\n
              \u9805\u76ee<\/th>Query Builder<\/th>Eloquent<\/th><\/tr><\/thead>
              \u8a18\u8ff0\u306e\u7c21\u6f54\u3055<\/td>SQL\u30e9\u30a4\u30af\u306a\u8a18\u8ff0\u304c\u53ef\u80fd<\/td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u3067\u76f4\u611f\u7684<\/td><\/tr>
              \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td>\u8efd\u91cf\u3067\u9ad8\u901f<\/td>\u30e2\u30c7\u30eb\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3042\u308a<\/td><\/tr>
              \u9069\u3057\u305f\u7528\u9014<\/td>\u8907\u96d1\u306a\u30af\u30a8\u30ea\u3001\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406<\/td>\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u591a\u7528\u3059\u308b\u5834\u9762<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
              \u57fa\u672c\u7684\u306b\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u30c7\u30fc\u30bf\u53d6\u5f97\u306fEloquent\u3001\u8907\u96d1\u306a\u30af\u30a8\u30ea\u3084\u5927\u91cf\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306b\u306fQuery Builder<\/strong> \u3092\u4f7f\u3046\u306e\u304c\u30d9\u30b9\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n
              \n\n\n\n
              5.3 Laravel\u3067SQL\u3092\u6271\u3046\u30b9\u30ad\u30eb\u3092\u78e8\u3053\u3046\uff01<\/strong><\/h3>\n\n\n\n
              Query Builder\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u3001Laravel\u306e\u30c7\u30fc\u30bf\u64cd\u4f5c\u306e\u5e45\u304c\u5927\u304d\u304f\u5e83\u304c\u308a\u307e\u3059\u3002
              \u305c\u3072\u5b9f\u969b\u306e\u958b\u767a\u3067\u6d3b\u7528\u3057\u306a\u304c\u3089\u3001Eloquent\u3068Query Builder\u3092\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u30b9\u30ad\u30eb<\/strong> \u3092\u8eab\u306b\u3064\u3051\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
              1. \u30a4\u30f3\u30c8\u30ed\u30c0\u30af\u30b7\u30e7\u30f3 Laravel\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001Eloquent ORM\u3068Query Builder\u306e2\u3064\u304c\u3042\u308a\u307e\u3059\u3002Eloquent\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u53d6\u308a\u3001\u30e2\u30c7\u30eb\u3092\u901a\u3058\u3066\u30c7\u30fc\u30bf […]<\/p>\n","protected":false},"author":1,"featured_media":217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"common","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[9,6],"tags":[],"class_list":["post-216","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laravel","category-app_development"],"veu_head_title_object":{"title":"","add_site_title":""},"_links":{"self":[{"href":"https:\/\/hexis.jp\/index.php?rest_route=\/wp\/v2\/posts\/216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hexis.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hexis.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hexis.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hexis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=216"}],"version-history":[{"count":3,"href":"https:\/\/hexis.jp\/index.php?rest_route=\/wp\/v2\/posts\/216\/revisions"}],"predecessor-version":[{"id":225,"href":"https:\/\/hexis.jp\/index.php?rest_route=\/wp\/v2\/posts\/216\/revisions\/225"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hexis.jp\/index.php?rest_route=\/wp\/v2\/media\/217"}],"wp:attachment":[{"href":"https:\/\/hexis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hexis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hexis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}