{"id":475830,"date":"2023-08-09T07:23:51","date_gmt":"2023-08-09T07:23:51","guid":{"rendered":""},"modified":"2023-09-05T11:11:21","modified_gmt":"2023-09-05T11:11:21","slug":"aggregate-function","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/aggregate-function\/","title":{"rendered":"\u96c6\u8a08\u95a2\u6570"},"content":{"rendered":"

\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u5206\u91ce\u3067\u306f\u3001\u96c6\u7d04\u6a5f\u80fd\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u3068\u30e6\u30fc\u30b6\u30fc \u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306e\u5411\u4e0a\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u96c6\u7d04\u6a5f\u80fd\u306f\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u8981\u7d20\u3092\u7d44\u307f\u5408\u308f\u305b\u3066 1 \u3064\u306e\u7c21\u6f54\u306a\u7d50\u679c\u306b\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u91cd\u8981\u306a\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3059\u3002\u96c6\u7d04\u6a5f\u80fd\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001OneProxy (oneproxy.pro) \u306a\u3069\u306e\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u904b\u7528\u3092\u5408\u7406\u5316\u3057\u3001\u52b9\u7387\u6027\u3092\u9ad8\u3081\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u512a\u308c\u305f\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u96c6\u8a08\u95a2\u6570\u306e\u8d77\u6e90\u3068\u305d\u306e\u6700\u521d\u306e\u8a00\u53ca\u306e\u6b74\u53f2<\/h2>\n

\u96c6\u8a08\u306e\u6982\u5ff5\u306f\u3001\u521d\u671f\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30b7\u30b9\u30c6\u30e0\u3068\u30c7\u30fc\u30bf\u51e6\u7406\u306b\u307e\u3067\u9061\u308a\u307e\u3059\u3002\u96c6\u8a08\u95a2\u6570\u306e\u8d77\u6e90\u306f\u30011970 \u5e74\u4ee3\u306e\u69cb\u9020\u5316\u7167\u4f1a\u8a00\u8a9e (SQL) \u306e\u958b\u767a\u306b\u9061\u308a\u307e\u3059\u3002SQL \u8a00\u8a9e\u3067\u306f\u3001SUM\u3001COUNT\u3001AVG\u3001MIN\u3001MAX \u306a\u3069\u306e\u3055\u307e\u3056\u307e\u306a\u96c6\u8a08\u95a2\u6570\u304c\u5c0e\u5165\u3055\u308c\u3001\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u3067\u306e\u30c7\u30fc\u30bf\u64cd\u4f5c\u3068\u8981\u7d04\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u96c6\u8a08\u95a2\u6570\u306e\u6700\u521d\u306e\u8a00\u53ca\u306f\u3001IBM \u306e\u7814\u7a76\u8005\u304c\u4f5c\u6210\u3057\u305f\u5148\u99c6\u7684\u306a\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30b7\u30b9\u30c6\u30e0\u3067\u3042\u308b System R \u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u96c6\u8a08\u95a2\u6570\u306b\u95a2\u3059\u308b\u8a73\u7d30\u60c5\u5831\u3002\u96c6\u8a08\u95a2\u6570\u306e\u30c8\u30d4\u30c3\u30af\u306e\u62e1\u5f35<\/h2>\n

Aggregate \u95a2\u6570\u306f\u3001\u4e00\u9023\u306e\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066 1 \u3064\u306e\u7d50\u679c\u3092\u8fd4\u3059\u6570\u5b66\u6f14\u7b97\u3067\u3059\u3002\u30c7\u30fc\u30bf\u306e\u30b0\u30eb\u30fc\u30d7\u306b\u5bfe\u3057\u3066\u8a08\u7b97\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u3001\u3055\u307e\u3056\u307e\u306a\u7d71\u8a08\u3001\u5206\u6790\u3001\u304a\u3088\u3073\u30c7\u30fc\u30bf\u64cd\u4f5c\u306e\u30bf\u30b9\u30af\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u306e\u95a2\u6570\u306f\u3001\u6570\u5024\u3001\u30c6\u30ad\u30b9\u30c8\u3001\u6642\u9593\u30c7\u30fc\u30bf\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u30c7\u30fc\u30bf\u578b\u3092\u64cd\u4f5c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u5834\u5408\u3001\u96c6\u7d04\u6a5f\u80fd\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30bd\u30fc\u30b9\u304b\u3089\u53ce\u96c6\u3055\u308c\u305f\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u969b\u306b\u7279\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u9593\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u8981\u6c42\u3068\u5fdc\u7b54\u3092\u51e6\u7406\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u3092\u96c6\u7d04\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u5197\u9577\u306a\u60c5\u5831\u3092\u6e1b\u3089\u3057\u3001\u5e2f\u57df\u5e45\u306e\u4f7f\u7528\u3092\u6700\u9069\u5316\u3067\u304d\u308b\u305f\u3081\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u3001\u5fdc\u7b54\u6642\u9593\u304c\u77ed\u7e2e\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u96c6\u8a08\u95a2\u6570\u306e\u5185\u90e8\u69cb\u9020\u3002\u96c6\u8a08\u95a2\u6570\u306e\u4ed5\u7d44\u307f<\/h2>\n

Aggregate \u95a2\u6570\u306e\u5185\u90e8\u69cb\u9020\u306b\u306f\u3001\u901a\u5e38\u3001\u3044\u304f\u3064\u304b\u306e\u4e3b\u8981\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n

    \n
  1. \n

    \u5165\u529b\u30c7\u30fc\u30bf:<\/strong> \u3053\u306e\u95a2\u6570\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u307e\u305f\u306f\u5024\u306e\u30b0\u30eb\u30fc\u30d7\u306e\u5f62\u5f0f\u3067\u3001\u30c7\u30fc\u30bf\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u5165\u529b\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n

  2. \n

    \u96c6\u8a08\u64cd\u4f5c:<\/strong> \u95a2\u6570\u306b\u3088\u3063\u3066\u5b9f\u884c\u3055\u308c\u308b\u7279\u5b9a\u306e\u64cd\u4f5c\u306b\u3088\u3063\u3066\u3001\u6700\u7d42\u7d50\u679c\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u96c6\u8a08\u64cd\u4f5c\u306b\u306f\u3001\u5408\u8a08\u3001\u30ab\u30a6\u30f3\u30c8\u3001\u5e73\u5747\u3001\u6700\u5c0f\u5024\u307e\u305f\u306f\u6700\u5927\u5024\u306e\u691c\u7d22\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n

  3. \n

    \u30b0\u30eb\u30fc\u30d7\u5316:<\/strong> \u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u96c6\u8a08\u95a2\u6570\u3067\u306f\u3001\u96c6\u8a08\u64cd\u4f5c\u3092\u9069\u7528\u3059\u308b\u524d\u306b\u30c7\u30fc\u30bf\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u95a2\u6570\u306f\u6307\u5b9a\u3055\u308c\u305f\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u30c7\u30fc\u30bf\u306e\u30b5\u30d6\u30bb\u30c3\u30c8\u306b\u5bfe\u3057\u3066\u8a08\u7b97\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n

  4. \n

    \u51fa\u529b\uff1a<\/strong> Aggregate \u95a2\u6570\u306e\u7d50\u679c\u306f\u3001\u5165\u529b\u30c7\u30fc\u30bf\u304b\u3089\u96c6\u8a08\u3055\u308c\u305f\u60c5\u5831\u3092\u8868\u3059\u5358\u4e00\u306e\u5024\u307e\u305f\u306f\u5024\u306e\u30bb\u30c3\u30c8\u3067\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u96c6\u8a08\u6a5f\u80fd\u3092\u4f7f\u7528\u3057\u3066\u30ed\u30b0 \u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3057\u3001\u30e6\u30fc\u30b6\u30fc \u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u8ffd\u8de1\u3057\u3001\u5e2f\u57df\u5e45\u306e\u4f7f\u7528\u72b6\u6cc1\u3092\u76e3\u8996\u3057\u307e\u3059\u3002\u95a2\u9023\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u3066\u96c6\u8a08\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30b7\u30b9\u30c6\u30e0\u7ba1\u7406\u8005\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30ca\u30ea\u30b9\u30c8\u306b\u3068\u3063\u3066\u8cb4\u91cd\u306a\u6d1e\u5bdf\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \u96c6\u8a08\u95a2\u6570\u306e\u4e3b\u306a\u7279\u5fb4\u306e\u5206\u6790<\/h2>\n

    \u96c6\u8a08\u95a2\u6570\u306b\u306f\u3001\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u3068\u5206\u6790\u306e\u305f\u3081\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3068\u306a\u308b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

      \n
    1. \n

      \u52b9\u7387\uff1a<\/strong> Aggregate \u95a2\u6570\u306f\u3001\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u7c21\u6f54\u306a\u7d50\u679c\u306b\u51e6\u7406\u3059\u308b\u3053\u3068\u3067\u3001\u8a08\u7b97\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3057\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n<\/li>\n

    2. \n

      \u30c7\u30fc\u30bf\u306e\u8981\u7d04:<\/strong> \u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u610f\u5473\u306e\u3042\u308b\u5b9f\u7528\u7684\u306a\u60c5\u5831\u306b\u8981\u7d04\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n

    3. \n

      \u7d71\u8a08\u7684\u6d1e\u5bdf:<\/strong> \u3053\u306e\u95a2\u6570\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u96c6\u8a08\u64cd\u4f5c\u306b\u3088\u308a\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u5408\u8a08\u6570\u3001\u5e73\u5747\u5fdc\u7b54\u6642\u9593\u306a\u3069\u306e\u8cb4\u91cd\u306a\u7d71\u8a08\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n

    4. \n

      \u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u76e3\u8996:<\/strong> \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u96c6\u8a08\u6a5f\u80fd\u3092\u4f7f\u7528\u3057\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u76e3\u8996\u3057\u3001\u554f\u984c\u3092\u8fc5\u901f\u306b\u691c\u51fa\u3057\u3066\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

      \u96c6\u8a08\u95a2\u6570\u306e\u7a2e\u985e<\/h2>\n

      \u96c6\u8a08\u95a2\u6570\u306b\u306f\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u304c\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u7279\u5b9a\u306e\u76ee\u7684\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u96c6\u8a08\u95a2\u6570\u306e\u4e00\u822c\u7684\u306a\u7a2e\u985e\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n
      \u30bf\u30a4\u30d7<\/th>\n\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n
      \u6570\u5024\u96c6\u8a08<\/strong><\/td>\nSUM\u3001AVG\u3001MIN\u3001MAX \u306a\u3069\u306e\u6570\u5024\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u8a08\u7b97\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n
      \u30c6\u30ad\u30b9\u30c8\u96c6\u7d04<\/strong><\/td>\n\u30c6\u30ad\u30b9\u30c8 \u30c7\u30fc\u30bf\u3092\u7d50\u5408\u3057\u307e\u3059 (\u4f8b: CONCATENATE\u3001GROUP_CONCAT)\u3002<\/td>\n<\/tr>\n
      \u6642\u9593\u7684\u96c6\u8a08<\/strong><\/td>\n\u65e5\u3001\u9031\u3001\u6708\u306a\u3069\u306e\u6642\u9593\u9593\u9694\u306b\u57fa\u3065\u3044\u3066\u30c7\u30fc\u30bf\u3092\u96c6\u8a08\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n
      \u6761\u4ef6\u4ed8\u304d\u96c6\u8a08<\/strong><\/td>\nCOUNTIF \u306a\u3069\u306e\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u96c6\u8a08\u3092\u9069\u7528\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u96c6\u8a08\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3001\u4f7f\u7528\u4e0a\u306e\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u7b56<\/h2>\n

      OneProxy \u306a\u3069\u306e\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u3092\u6539\u5584\u3059\u308b\u305f\u3081\u306b\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067 Aggregate \u95a2\u6570\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

        \n
      1. \n

        \u5e2f\u57df\u5e45\u306e\u6700\u9069\u5316:<\/strong> \u96c6\u8a08\u95a2\u6570\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u8981\u6c42\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u5197\u9577\u6027\u3092\u8b58\u5225\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u304c\u5e2f\u57df\u5e45\u306e\u4f7f\u7528\u3092\u6700\u9069\u5316\u3057\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n

      2. \n

        \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5206\u6790:<\/strong> \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30e6\u30fc\u30b6\u30fc \u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u96c6\u7d04\u3059\u308b\u3053\u3068\u3067\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5206\u6790\u3092\u5b9f\u884c\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u884c\u52d5\u3092\u7406\u89e3\u3057\u3001\u6f5c\u5728\u7684\u306a\u8105\u5a01\u3092\u691c\u51fa\u3057\u3001\u3088\u308a\u512a\u308c\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u5b9f\u65bd\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n

      3. \n

        \u8cc7\u6e90\u306e\u914d\u5206\uff1a<\/strong> \u96c6\u8a08\u95a2\u6570\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u52b9\u7387\u7684\u306b\u5272\u308a\u5f53\u3066\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u9593\u3067\u30ea\u30bd\u30fc\u30b9\u3092\u516c\u5e73\u306b\u5206\u914d\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

        \u305f\u3060\u3057\u3001\u96c6\u8a08\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u6b21\u306e\u3088\u3046\u306a\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

          \n
        1. \n

          \u30c7\u30fc\u30bf\u306e\u7cbe\u5ea6:<\/strong> \u96c6\u8a08\u3092\u4e0d\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u305f\u308a\u3001\u7d50\u679c\u304c\u4e0d\u6b63\u78ba\u306b\u306a\u3063\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u5bfe\u51e6\u3059\u308b\u306b\u306f\u3001\u9069\u5207\u306a\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u30c7\u30fc\u30bf\u691c\u8a3c\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/li>\n

        2. \n

          \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff:<\/strong> \u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u8907\u96d1\u306a\u96c6\u8a08\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf \u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u4e26\u5217\u51e6\u7406\u3092\u63a1\u7528\u3059\u308b\u3068\u3001\u3053\u306e\u554f\u984c\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n

        3. \n

          \u30c7\u30fc\u30bf\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\uff1a<\/strong> \u96c6\u8a08\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u306f\u6a5f\u5bc6\u60c5\u5831\u304c\u542b\u307e\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u30c7\u30fc\u30bf\u533f\u540d\u5316\u6280\u8853\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

          \u4e3b\u306a\u7279\u5fb4\u3068\u985e\u4f3c\u7528\u8a9e\u3068\u306e\u6bd4\u8f03<\/h2>\n

          \u96c6\u8a08\u95a2\u6570\u3068\u3044\u304f\u3064\u304b\u306e\u985e\u4f3c\u7528\u8a9e\u306e\u6bd4\u8f03\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
          \u7279\u6027<\/th>\n\u96c6\u8a08\u95a2\u6570<\/th>\n\u30b0\u30eb\u30fc\u30d7\u53e5<\/th>\n\u5dfb\u304d\u4e0a\u3052\u308b<\/th>\n\u30ad\u30e5\u30fc\u30d6<\/th>\n<\/tr>\n<\/thead>\n
          \u76ee\u7684<\/td>\n\u30c7\u30fc\u30bf\u306e\u8981\u7d04<\/td>\n\u30c7\u30fc\u30bf\u306e\u30b0\u30eb\u30fc\u30d7\u5316<\/td>\n\u968e\u5c64\u7684\u96c6\u7d04<\/td>\n\u591a\u6b21\u5143\u5206\u6790<\/td>\n<\/tr>\n
          \u306b\u9069\u7528\u3055\u308c\u307e\u3059<\/td>\n\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u5168\u4f53<\/td>\n\u30b0\u30eb\u30fc\u30d7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8<\/td>\n\u968e\u5c64\u30ec\u30d9\u30eb<\/td>\n\u8907\u6570\u306e\u6b21\u5143<\/td>\n<\/tr>\n
          \u7d50\u679c\u4ef6\u6570<\/td>\n1\u4ef6\u306e\u7d50\u679c<\/td>\n\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u8907\u6570\u306e\u7d50\u679c<\/td>\n\u8907\u6570\u306e\u7d50\u679c<\/td>\n\u8907\u6570\u306e\u7d50\u679c<\/td>\n<\/tr>\n
          \u95a2\u6570\u306e\u9069\u7528\u7bc4\u56f2<\/td>\n\u30b0\u30ed\u30fc\u30d0\u30eb<\/td>\n\u30b0\u30eb\u30fc\u30d7\u56fa\u6709<\/td>\n\u968e\u5c64\u30ec\u30d9\u30eb<\/td>\n\u3059\u3079\u3066\u306e\u7d44\u307f\u5408\u308f\u305b<\/td>\n<\/tr>\n
          SQL \u306e\u4f8b<\/td>\nSELECT SUM(\u5217)<\/td>\nSELECT\u5217\u3001SUM(\u5024)<\/td>\nGROUP BY ROLLUP(\u5217)<\/td>\nGROUP BY CUBE(\u5217)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          \u96c6\u8a08\u6a5f\u80fd\u306b\u95a2\u3059\u308b\u4eca\u5f8c\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n

          \u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u304c\u9032\u5316\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306b\u304a\u3051\u308b Aggregate \u6a5f\u80fd\u306e\u5f79\u5272\u306f\u62e1\u5927\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4eca\u5f8c\u306e\u5c55\u958b\u3068\u3057\u3066\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n

            \n
          1. \n

            \u6a5f\u68b0\u5b66\u7fd2\u306e\u7d71\u5408:<\/strong> \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u6a5f\u68b0\u5b66\u7fd2\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u6d3b\u7528\u3057\u3066\u96c6\u7d04\u6226\u7565\u3092\u6700\u9069\u5316\u3057\u3001\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u52b9\u7387\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n

          2. \n

            \u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u4e88\u6e2c\u5206\u6790:<\/strong> \u9ad8\u5ea6\u306a\u96c6\u7d04\u6280\u8853\u306b\u3088\u308a\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u884c\u52d5\u3092\u4e88\u6e2c\u3057\u3001\u305d\u308c\u306b\u5fdc\u3058\u3066\u30b5\u30fc\u30d3\u30b9\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n

          3. \n

            \u30a8\u30c3\u30b8\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0:<\/strong> \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30a8\u30c3\u30b8\u3067\u96c6\u7d04\u6a5f\u80fd\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u3055\u3089\u306b\u77ed\u7e2e\u3055\u308c\u3001\u5168\u4f53\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

            \u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u306e\u4f7f\u7528\u65b9\u6cd5\u3084\u96c6\u8a08\u6a5f\u80fd\u3068\u306e\u95a2\u9023\u4ed8\u3051\u65b9\u6cd5<\/h2>\n

            \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068 Aggregate \u95a2\u6570\u306f\u5171\u751f\u95a2\u4fc2\u306b\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u6b21\u306e\u76ee\u7684\u3067 Aggregate \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u30e1\u30ea\u30c3\u30c8\u3092\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n

              \n
            1. \n

              \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316:<\/strong> \u30c7\u30fc\u30bf\u3092\u96c6\u7d04\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30c7\u30fc\u30bf\u8ee2\u9001\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u5f85\u3061\u6642\u9593\u3092\u6e1b\u3089\u3057\u3001\u5168\u4f53\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n

            2. \n

              \u8cc7\u6e90\u7ba1\u7406\uff1a<\/strong> \u30ea\u30bd\u30fc\u30b9\u4f7f\u7528\u72b6\u6cc1\u30c7\u30fc\u30bf\u3092\u96c6\u7d04\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30ea\u30bd\u30fc\u30b9\u3092\u3088\u308a\u52b9\u7387\u7684\u306b\u5272\u308a\u5f53\u3066\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u9593\u3067\u306e\u516c\u5e73\u306a\u4f7f\u7528\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n

            3. \n

              \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5206\u6790:<\/strong> \u96c6\u8a08\u6a5f\u80fd\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u304c\u30e6\u30fc\u30b6\u30fc\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u5206\u6790\u3057\u3001\u30d1\u30bf\u30fc\u30f3\u3092\u691c\u51fa\u3057\u3001\u6f5c\u5728\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8105\u5a01\u3092\u8b58\u5225\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

              \u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n

              \u96c6\u8a08\u95a2\u6570\u3068\u305d\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

                \n
              1. SQL \u96c6\u8a08\u95a2\u6570<\/a><\/li>\n
              2. \u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3068\u30c7\u30fc\u30bf\u96c6\u7d04<\/a><\/li>\n
              3. \u96c6\u8a08\u95a2\u6570\u306b\u3088\u308b\u30d3\u30c3\u30b0\u30c7\u30fc\u30bf\u51e6\u7406<\/a><\/li>\n<\/ol>\n

                Aggregate \u6a5f\u80fd\u306e\u30d1\u30ef\u30fc\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001OneProxy \u306a\u3069\u306e\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u52b9\u7387\u7684\u306a\u30b5\u30fc\u30d3\u30b9\u3092\u7d99\u7d9a\u7684\u306b\u63d0\u4f9b\u3057\u3001\u52d5\u7684\u3067\u30c7\u30fc\u30bf\u4e3b\u5c0e\u306e\u30c7\u30b8\u30bf\u30eb\u74b0\u5883\u306e\u8981\u6c42\u306b\u5fdc\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>","protected":false},"featured_media":467511,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-475830","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Aggregate Function: Enhancing Proxy Server Performance<\/mark>","faq_items":[{"question":"What is an Aggregate function and how does it benefit proxy servers?","answer":"

                An Aggregate function is a mathematical operation that combines a set of values and returns a single, concise result. It plays a crucial role in optimizing performance and enhancing user experience for proxy servers. By aggregating data, proxy servers can reduce redundant information and optimize bandwidth usage, leading to improved performance and faster response times.<\/p>"},{"question":"Where did the concept of Aggregate functions originate?","answer":"

                The concept of aggregation dates back to early database systems and data processing. The origins of the Aggregate function can be traced to the development of Structured Query Language (SQL) in the 1970s. The first mention of the Aggregate function can be found in the documentation of the pioneering relational database system, System R, created by IBM researchers.<\/p>"},{"question":"What are the key features of Aggregate functions?","answer":"

                Aggregate functions offer several key features that make them powerful tools for data processing and analysis. These features include efficiency, data summarization, statistical insights, and real-time monitoring. Proxy servers can utilize these features to track user activities, monitor network activities in real-time, and optimize bandwidth usage.<\/p>"},{"question":"What types of Aggregate functions exist?","answer":"

                Aggregate functions come in various types, each serving specific purposes. Common types include Numerical Aggregates (e.g., SUM, AVG), Textual Aggregates (e.g., CONCATENATE), Temporal Aggregates (e.g., DAY, WEEK), and Conditional Aggregates (e.g., COUNTIF).<\/p>"},{"question":"How do proxy servers use Aggregate functions?","answer":"

                Proxy server providers like OneProxy employ Aggregate functions in various ways to improve their services. They utilize Aggregate functions to optimize bandwidth usage, perform traffic analysis, and efficiently allocate server resources among clients.<\/p>"},{"question":"What are the challenges related to using Aggregate functions?","answer":"

                While Aggregate functions offer numerous benefits, there are some challenges associated with their usage. These challenges include ensuring data accuracy, addressing potential performance impact on large datasets, and implementing data privacy measures to protect sensitive information.<\/p>"},{"question":"How does the future look for Aggregate functions and proxy servers?","answer":"

                As technology evolves, the role of Aggregate functions in proxy servers is expected to expand. Future developments may include the integration of machine learning algorithms for optimized aggregation strategies and real-time predictive analytics for personalized services.<\/p>"},{"question":"How do proxy servers benefit from using Aggregate functions?","answer":"

                Proxy servers benefit from using Aggregate functions in various ways, such as enhancing performance optimization, resource management, and traffic analysis. By aggregating data, proxy servers can deliver efficient and reliable services to users.<\/p>"},{"question":"Where can I find more information about Aggregate functions?","answer":"

                For more information about Aggregate functions and their applications, you can refer to the following resources:<\/p>

                1. SQL Aggregate Functions (link: https:\/\/www.w3schools.com\/sql\/sql_functions.asp<\/a>)<\/li>
                2. Proxy Servers and Data Aggregation (link: [provide URL])<\/li>
                3. Big Data Processing with Aggregate Functions (link: [provide URL])<\/li><\/ol>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/475830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/475830\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/467511"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=475830"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}