{"id":18697,"date":"2026-04-04T08:34:04","date_gmt":"2026-04-04T06:34:04","guid":{"rendered":"https:\/\/webhosting.de\/mysql-optimizer-query-hosting-optimierung-serverboost\/"},"modified":"2026-04-04T08:34:04","modified_gmt":"2026-04-04T06:34:04","slug":"mysql-%e3%82%aa%e3%83%97%e3%83%86%e3%82%a3%e3%83%9e%e3%82%a4%e3%82%b6-%e3%82%af%e3%82%a8%e3%83%aa-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e6%9c%80%e9%81%a9%e5%8c%96-serverboost","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/mysql-optimizer-query-hosting-optimierung-serverboost\/","title":{"rendered":"MySQL\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc\u30af\u30a8\u30ea\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308b\u6700\u9069\u5316"},"content":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f <strong>MySQL<\/strong> Optimiser Query\u306f\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u306b\u304a\u3044\u3066\u3088\u308a\u52b9\u679c\u7684\u306a\u5b9f\u884c\u30d7\u30e9\u30f3\u3092\u69cb\u7bc9\u3057\u3001\u8a08\u7b97\u6642\u9593\u3092\u7bc0\u7d04\u3057\u307e\u3059\u3002\u305d\u306e\u4e2d\u3067\u91cd\u8981\u306a\u8a2d\u5b9a\u3001\u30af\u30a8\u30ea\u8a2d\u8a08\u3001\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306b\u7126\u70b9\u3092\u5f53\u3066\u307e\u3059\u3002 <strong>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0<\/strong> \u76f4\u63a5\u7684\u306a\u30ed\u30fc\u30c9\u6642\u9593\u306e\u512a\u4f4d\u6027\u3092\u3082\u305f\u3089\u3059\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<p>\u8a18\u4e8b\u306e\u9aa8\u683c\u3068\u306a\u308b\u91cd\u8981\u306a\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3042\u308b\u3002.<\/p>\n<ul>\n  <li><strong>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc<\/strong> \u7406\u89e3\u3059\u308b\uff1a\u30b3\u30b9\u30c8\u30fb\u30d9\u30fc\u30b9\u306e\u30d7\u30e9\u30f3\u30cb\u30f3\u30b0\u3001\u7d71\u8a08\u3001\u30b8\u30e7\u30a4\u30f3\u30fb\u30b7\u30fc\u30b1\u30f3\u30b9.<\/li>\n  <li><strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210<\/strong> \u30de\u30b9\u30bf\u30fc\uff1a\u6b63\u3057\u3044\u30ad\u30fc\u3001\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u4e0d\u53ef\u8996\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3002.<\/li>\n  <li><strong>\u66f8\u304d\u76f4\u3057<\/strong> \u3092\u9069\u7528\u3059\u308b\uff1aIN\u306e\u4ee3\u308f\u308a\u306bEXISTS\u3001\u30d5\u30a3\u30eb\u30bf\u3092\u65e9\u3081\u306b\u8a2d\u5b9a\u3001\u5fc5\u8981\u306a\u5217\u306e\u307f\u3002.<\/li>\n  <li><strong>\u69cb\u6210<\/strong> \u3092\u5236\u5fa1\u3057\u307e\u3059\uff1aInnoDB \u30d0\u30c3\u30d5\u30a1\u3001\u30ed\u30b0\u30b5\u30a4\u30ba\u3001I\/O\u3001CPU \u3092\u9069\u5207\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u512a\u5148\u9806\u4f4d\u3092\u3064\u3051\u308b\uff1a\u30b9\u30ed\u30fc\u30fb\u30af\u30a8\u30ea\u30fb\u30ed\u30b0\u3001EXPLAIN ANALYZE\u3001\u4e00\u76ee\u3067\u308f\u304b\u308b\u30e1\u30c8\u30ea\u30af\u30b9\u3002.<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/mysql-optimizer-serverraum-7843.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308b\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc\u306e\u6c7a\u5b9a\u65b9\u6cd5<\/h2>\n\n<p>\u304c\u3001\u305d\u306e\u3088\u3046\u306a\u3053\u3068\u306f\u306a\u3044\u3068\u601d\u3046\u3002 <strong>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc<\/strong> \u53ef\u80fd\u306a\u30d7\u30e9\u30f3\u3092\u8a55\u4fa1\u3057\u3001\u30af\u30a8\u30ea\u306b\u6700\u3082\u9069\u3057\u305f\u30d1\u30b9\u3092\u9078\u629e\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u30b8\u30e7\u30a4\u30f3\u30b7\u30fc\u30b1\u30f3\u30b9\u3001\u5229\u7528\u53ef\u80fd\u306a\u30ea\u30bd\u30fc\u30b9\u304c\u8003\u616e\u3055\u308c\u307e\u3059\u3002 <strong>\u5171\u6709<\/strong>- \u307e\u305f\u306fVPS\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u304c\u76f4\u63a5\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002MySQL 8.0\u3067\u306f\u3001\u30d2\u30b9\u30c8\u30b0\u30e9\u30e0\u3068\u3088\u308a\u826f\u3044\u7d71\u8a08\u306b\u3088\u308a\u3001\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u3092\u3088\u308a\u78ba\u5b9f\u306b\u63a8\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u79c1\u306f\u3001\u30d7\u30e9\u30f3\u30ca\u304c\u4fe1\u983c\u3067\u304d\u308b\u6570\u5024\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u7279\u306b\u5927\u304d\u306a\u30c7\u30fc\u30bf\u5909\u66f4\u306e\u5f8c\u3001ANALYZE TABLE\u3067\u7d71\u8a08\u60c5\u5831\u3092\u610f\u56f3\u7684\u306b\u66f4\u65b0\u3057\u3066\u3044\u307e\u3059\u3002\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u6587\u8108\u3067\u306f\u3001\u3053\u308c\u306f\u30d4\u30fc\u30af\u8ca0\u8377\u304c\u767a\u751f\u3059\u308b\u524d\u306b\u305d\u308c\u3092\u9632\u3050\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/p>\n\n<h2>\u7d71\u8a08\u3001\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u3001\u5b89\u5b9a\u3057\u305f\u63a8\u5b9a\u5024<\/h2>\n<p>\u63a8\u5b9a\u5024\u304c\u5b9f\u969b\u306e\u5b9f\u884c\u6642\u9593\u3068\u3069\u306e\u7a0b\u5ea6\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3092\u89b3\u5bdf\u3059\u308b\u3002EXPLAIN ANALYZE\u304b\u3089\u5f97\u3089\u308c\u308b\u884c\u3084\u30d5\u30a3\u30eb\u30bf\u6bd4\u7387\u304c\u5b9f\u969b\u3068\u5927\u304d\u304f\u4e56\u96e2\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u7d71\u8a08\u304c\u53e4\u3044\u304b\u3001\u5206\u5e03\u304c\u4e0d\u7b49\u3067\u3042\u308b\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002Zipf\u5206\u5e03\u307e\u305f\u306fSkew\u5206\u5e03\u3092\u6301\u3064\u5217\u306b\u3064\u3044\u3066\u306f\u3001\u9078\u629e\u6027\u304c\u6b63\u3057\u304f\u8a55\u4fa1\u3055\u308c\u308b\u3088\u3046\u306b\u30d2\u30b9\u30c8\u30b0\u30e9\u30e0\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002\u7279\u306b\u5927\u91cf\u306e\u633f\u5165\u3084\u524a\u9664\u3092\u884c\u3063\u305f\u5f8c\u306e\u30db\u30c3\u30c8\u30ea\u30fc\u30c9\u30fb\u30c6\u30fc\u30d6\u30eb\u3067\u306f\u3001ANALYZE TABLE\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u6c38\u7d9a\u7684\u306a\u7d71\u8a08\u306b\u3088\u308a\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u518d\u8d77\u52d5\u5f8c\u306b\u63a8\u6e2c\u3067\u9752\u304f\u306a\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b63\u7bc0\u7684\u306a\u30d1\u30bf\u30fc\u30f3\uff08\u4f8b\u3048\u3070\u6708\u306e\u5909\u308f\u308a\u76ee\uff09\u304c\u898b\u3048\u305f\u3089\u3001\u8a08\u753b\u306e\u5909\u52d5\u3084\u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u4e8b\u524d\u306b\u66f4\u65b0\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3059\u308b\u3002.<\/p>\n<p>\u975e\u5e38\u306b\u52d5\u7684\u306a\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306e\u5834\u5408\u3001\u79c1\u306f\u5b9f\u904b\u7528\u304b\u3089\u8a08\u6e2c\u3092\u5207\u308a\u96e2\u3057\u307e\u3059\u3002\u4ee3\u8868\u7684\u306a\u30c7\u30fc\u30bf\u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30df\u30e9\u30fc\u30ea\u30f3\u30b0\u3057\u3001\u305d\u3053\u3067EXPLAIN ANALYZE\u3092\u8a08\u6e2c\u3057\u307e\u3059\u3002\u52d5\u4f5c\u304c\u6b63\u3057\u3051\u308c\u3070\u3001\u672c\u756a\u3067\u306e\u8a08\u753b\u304c\u5b89\u5b9a\u3057\u305f\u307e\u307e\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3002\u9593\u9055\u3063\u305f\u30d7\u30e9\u30f3\u306b\u7e70\u308a\u8fd4\u3057\u906d\u9047\u3059\u308b\u5834\u5408\u3001\u79c1\u306f\u4e00\u6642\u7684\u306a\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30d2\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u307e\u3059\u304c\u3001\u6c38\u7d9a\u7684\u306a\u4f9d\u5b58\u95a2\u4fc2\u304c\u306a\u3044\u3088\u3046\u306b\u3001\u305d\u306e\u7406\u7531\u3068\u8a2d\u5b9a\u671f\u9593\u3092\u660e\u78ba\u306b\u6587\u66f8\u5316\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u6709\u52b9\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u6226\u7565<\/h2>\n\n<p>\u983c\u308a\u306b\u3057\u3066\u3044\u308b\u306e\u306f <strong>\u30b3\u30f3\u30dd\u30b8\u30c3\u30c8<\/strong>-\u5178\u578b\u7684\u306aWHERE\u3084JOIN\u6761\u4ef6\u306b\u6cbf\u3063\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f5c\u6210\u3057\u3001\u4e0d\u8981\u306a\u91cd\u8907\u3092\u907f\u3051\u308b\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u591a\u3059\u304e\u308b\u3068\u66f8\u304d\u8fbc\u307f\u64cd\u4f5c\u306e\u305f\u3073\u306b\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308b\u306e\u3067\u3001\u3069\u306e\u30ad\u30fc\u304c\u5b9f\u969b\u306b\u30d2\u30c3\u30c8\u3059\u308b\u304b\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306fMySQL 8.0\u306e\u4e0d\u53ef\u8996\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u3063\u3066\u3001\u524a\u9664\u305b\u305a\u306b\u5b9f\u904b\u7528\u3067\u52b9\u679c\u3092\u30c6\u30b9\u30c8\u3059\u308b\u306e\u304c\u597d\u304d\u3067\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u307e\u305a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5019\u88dc\u3092\u4f7f\u7528\u3057\u3001\u6b21\u306b\u4f7f\u7528\u305b\u305a\u306b\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u3068\u30cf\u30f3\u30c9\u30e9\u6570\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u30ea\u30b9\u30af\u3068\u30e1\u30ea\u30c3\u30c8\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u6df1\u304f\u6398\u308a\u4e0b\u3052\u305f\u3044\u65b9\u306f <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%82%a4%e3%83%b3%e3%83%87%e3%83%83%e3%82%af%e3%82%b9%e3%81%ae%e6%90%8d%e5%ae%b3%e5%88%a9%e7%94%a8mysql%e3%81%ae%e8%90%bd%e3%81%a8%e3%81%97\/\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/a> \u305d\u308c\u4ee5\u4e0a\u306e\u30ad\u30fc\u304c\u751f\u7523\u7684\u306a\u30c6\u30fc\u30d6\u30eb\u306b\u79fb\u52d5\u3059\u308b\u524d\u306b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/mysql_query_meeting_7893.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30af\u30a8\u30ea\u30fc\u306e\u66f8\u304d\u63db\u3048\uff1a\u8a08\u753b\u304b\u3089\u5b9f\u969b\u306e\u30b9\u30d4\u30fc\u30c9\u3078<\/h2>\n\n<p>\u4ea4\u63db\u3059\u308b <strong>\u30a4\u30f3<\/strong>-EXISTS\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u76f8\u95a2\u95a2\u4fc2\u3092\u56de\u907f\u3057\u3001\u691c\u7d22\u30d1\u30b9\u3092\u77ed\u7e2e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3055\u3089\u306b\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u3088\u308a\u5c0f\u3055\u306a\u4e2d\u9593\u30bb\u30c3\u30c8\u3092\u79fb\u52d5\u3055\u305b\u3001\u7d50\u5408\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u3067\u304d\u308b\u3060\u3051\u65e9\u3044\u6bb5\u968e\u3067\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u304b\u3051\u308b\u3002\u5e83\u3044\u884c\u306f\u30e1\u30e2\u30ea\u3068I\/O\u306e\u6d88\u8cbb\u91cf\u3092\u5927\u5e45\u306b\u5897\u52a0\u3055\u305b\u308b\u306e\u3067\u3001\u672c\u5f53\u306b\u5fc5\u8981\u306a\u5217\u3060\u3051\u3092\u30d5\u30a7\u30c3\u30c1\u3059\u308b\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u4f7f\u7528\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u304d\u5217\u306e\u95a2\u6570\u306f\u4f7f\u7528\u3057\u306a\u3044\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u3092\u3001\u3088\u308a\u5c11\u306a\u3044\u30c7\u30fc\u30bf\u30da\u30fc\u30b8\u306b\u89e6\u308c\u308b\u30d7\u30e9\u30f3\u306b\u8a98\u5c0e\u3057\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002.<\/p>\n\n<h2>\u7d50\u5408\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3001\u8ff0\u8a9e\u30d7\u30c3\u30b7\u30e5\u30c0\u30a6\u30f3\u3001\u30e1\u30e2\u30ea\u8fd1\u63a5<\/h2>\n<p>MySQL\u306f\u4e3b\u306b\u30cd\u30b9\u30c8\u3055\u308c\u305f\u30eb\u30fc\u30d7\u306e\u5909\u7a2e\u3092\u4f7f\u7528\u3057\u3001\u6b21\u306e\u3088\u3046\u306a\u5229\u70b9\u304c\u3042\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u3044\u308b\u3002 <strong>\u30d0\u30c3\u30c1\u30ad\u30fc\u30a2\u30af\u30bb\u30b9\uff08BKA\uff09<\/strong> \u305d\u3057\u3066 <strong>\u30de\u30eb\u30c1\u30ec\u30f3\u30b8\u30fb\u30ea\u30fc\u30c9\uff08MRR\uff09<\/strong>, \u3082\u3057\u305d\u308c\u3089\u304c\u30c7\u30fc\u30bf\u72b6\u6cc1\u306b\u30de\u30c3\u30c1\u3059\u308c\u3070\u3002\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306f\u3001\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u30d0\u30f3\u30c9\u30eb\u3057\u3001\u30c7\u30fc\u30bf\u30da\u30fc\u30b8\u3092\u3088\u308a\u9806\u6b21\u306b\u8aad\u307f\u8fbc\u3080\u3053\u3068\u3067\u3001I\/O\u3092\u524a\u6e1b\u3059\u308b\u3002. <strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30fb\u30b3\u30f3\u30c7\u30a3\u30b7\u30e7\u30f3\u30fb\u30d7\u30c3\u30b7\u30e5\u30c0\u30a6\u30f3\uff08ICP\uff09<\/strong> \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5185\u306e\u30d5\u30a3\u30eb\u30bf\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u3067\u3001\u30c6\u30fc\u30d6\u30eb\u306b\u623b\u308b\u4e0d\u8981\u306a\u30b8\u30e3\u30f3\u30d7\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002\u79c1\u306fEXPLAIN\/ANALYZE\u3067\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u8a8d\u8b58\u3057\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3084\u30d5\u30a3\u30eb\u30bf\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u8abf\u6574\u3057\u3066\u30d7\u30c3\u30b7\u30e5\u30c0\u30a6\u30f3\u30b7\u30ca\u30ea\u30aa\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002.<\/p>\n<p>\u6d3e\u751f\u30c6\u30fc\u30d6\u30eb\u3068\u30d3\u30e5\u30fc\u306b\u3064\u3044\u3066\u306f <strong>\u30b3\u30f3\u30c7\u30a3\u30b7\u30e7\u30f3\u30fb\u30d7\u30c3\u30b7\u30e5\u30c0\u30a6\u30f3<\/strong> \u304c\u90e8\u5206\u96c6\u5408\u3067\u53ef\u80fd\u304b\u3069\u3046\u304b\u3001\u3042\u308b\u3044\u306f\u5b9f\u4f53\u5316\u304c\u9ad8\u3059\u304e\u308b\u304b\u3069\u3046\u304b\u3067\u3042\u308b\u3002\u7d50\u5408\u306e\u5e45\u304c\u5e83\u304f\u306a\u308b\u5834\u5408\u306f\u3001OR \u30c1\u30a7\u30fc\u30f3\u3092\u6b21\u306e\u3088\u3046\u306b\u7f6e\u304d\u63db\u3048\u308b\u3002 <strong>\u30e6\u30cb\u30aa\u30f3\u30fb\u30aa\u30fc\u30eb<\/strong> \u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u826f\u3044MRR\/ICP\u30d1\u30b9\u3092\u30d7\u30e9\u30f3\u30ca\u306b\u5c0e\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306b\u4fdd\u3061\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u3068CPU\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308bInnoDB\u306e\u8a2d\u5b9a\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/h2>\n\n<p>\u3092\u4f7f\u3063\u3066\u3044\u308b\u3002 <strong>innodb_buffer_pool_size<\/strong> \u5b9f\u969b\u306b\u306fRAM\u309250-70%\u7a0b\u5ea6\u306b\u3057\u3066\u3001\u983b\u7e41\u306a\u8aad\u307f\u8fbc\u307f\u304c\u30e1\u30e2\u30ea\u304b\u3089\u76f4\u63a5\u6765\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002\u66f8\u304d\u8fbc\u307f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306b\u3064\u3044\u3066\u306f\u3001\u30d5\u30e9\u30c3\u30b7\u30e5\u304c\u8a70\u307e\u3089\u306a\u3044\u3088\u3046\u306b\u3001innodb_log_file_size\u3068\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u306e\u6bd4\u7387\u306b\u6ce8\u610f\u3092\u6255\u3046\u3002\u5c0f\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u591a\u6570\u3042\u308b\u30ce\u30fc\u30c9\u3067\u306f\u3001\u3084\u307f\u304f\u3082\u306b\u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u3092\u30b9\u30b1\u30fc\u30eb\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30da\u30fc\u30b8\u30d2\u30c3\u30c8\u7387\u3001\u30c0\u30fc\u30c6\u30a3\u30da\u30fc\u30b8\u3001I\/O\u5f85\u3061\u6642\u9593\u3092\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002CPU\u306e\u30b3\u30df\u30c3\u30c8\u30e1\u30f3\u30c8\u306f\u591a\u304f\u306e\u5834\u5408\u3001\u4e0d\u5229\u306a\u8a08\u753b\u3084\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u6b20\u843d\u304c\u539f\u56e0\u306a\u306e\u3067\u3001\u30b3\u30a2\u3092\u8ffd\u52a0\u3059\u308b\u524d\u306b\u307e\u305a\u8a08\u6e2c\u3057\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7684\u78ba\u306b\u30b7\u30d5\u30c8\u3055\u305b\u3001CPU\u306e\u4f7f\u7528\u7387\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 <strong>\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc<\/strong> \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u5909\u308f\u3063\u3066\u3082\u3001\u305d\u306e\u8ca0\u8377\u306f\u4f4e\u3044\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/mysql-optimizer-query-hosting-9432.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u4e00\u6642\u7684\u306a\u30c6\u30fc\u30d6\u30eb\u3001\u4e26\u3079\u66ff\u3048\u3001\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u304c\u82e6\u306b\u306a\u3089\u306a\u3044<\/h2>\n<p>\u3059\u3050\u306b\u30c7\u30a3\u30b9\u30af\u306b\u5207\u308a\u66ff\u308f\u308b\u306e\u3067\u3001\u5185\u90e8\u30c6\u30f3\u30dd\u30e9\u30ea\u30fb\u30c6\u30fc\u30d6\u30eb\u306f\u6700\u5c0f\u9650\u306b\u3059\u308b\u3002GROUP BY\u3001DISTINCT\u3001\u304a\u3088\u3073\u5927\u304d\u306aORDER BY\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u3059\u3067\u306b\u76ee\u7684\u306e\u9806\u5e8f\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3002\u4e0a\u4f4dN\u500b\u306e\u30bb\u30c3\u30c8\u3060\u3051\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f <strong>ORDER BY<\/strong> \u3092\u3082\u3063\u3066 <strong>\u30ea\u30df\u30c3\u30c8<\/strong> \u30ef\u30a4\u30c9\u30fb\u30bd\u30fc\u30c8\u3092\u4f7f\u3046\u4ee3\u308f\u308a\u306b\u3001\u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u9ad8\u3044\u30aa\u30d5\u30bb\u30c3\u30c8\u306f\u907f\u3051\u3001\u201eSeek \u201c\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\uff08\u4f8b\u3048\u3070\u3001WHERE id &gt; last_id ORDER BY id\uff09\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u3092O(N+Offset)\u30d1\u30b9\u3067\u306f\u306a\u304fO(N)\u30d1\u30b9\u306b\u5c0e\u304f\u3002.<\/p>\n<p>\u96c6\u8a08\u306e\u30ab\u30e9\u30e0\u306f\u72ed\u304f\u4fdd\u3061\u3001\u30bd\u30fc\u30c8\u306eTEXT\/BLOB\u306f\u3059\u3050\u306b\u30c7\u30a3\u30b9\u30af\u4e0a\u306e\u8ca0\u8377\u306b\u3064\u306a\u304c\u308b\u306e\u3067\u907f\u3051\u3066\u3044\u308b\u3002\u5185\u90e8\u30c6\u30f3\u30dd\u30e9\u30ea\u30c6\u30fc\u30d6\u30eb\u304c\u907f\u3051\u3089\u308c\u306a\u3044\u5834\u5408\u306f\u3001\u30b5\u30a4\u30ba\u3092\u76e3\u8996\u3057\u3001\u5178\u578b\u7684\u306a\u8ca0\u8377\u30d4\u30fc\u30af\u306b\u5bfe\u3057\u3066\u5341\u5206\u306a\u30e1\u30e2\u30ea\u5236\u9650\u304c\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u5b89\u5b9a\u3057\u305f\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u306e\u305f\u3081\u306b\u306f\u3001\u30db\u30c3\u30c8\u30af\u30a8\u30ea\u304c\u30c7\u30a3\u30b9\u30af\u306e\u4e00\u6642\u505c\u6b62\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002.<\/p>\n\n<h2>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3001\u30b9\u30ed\u30fc\u30af\u30a8\u30ea\u30ed\u30b0\u3001EXPLAIN ANALYZE<\/h2>\n\n<p>\u3092\u8d77\u52d5\u3055\u305b\u308b\u3002 <strong>\u9045\u3044<\/strong> \u30af\u30a8\u30ea\u30ed\u30b0\u306b\u9069\u5207\u306a\u95be\u5024\u3092\u8a2d\u5b9a\u3057\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u306a\u3044\u30af\u30a8\u30ea\u3060\u3051\u3067\u306a\u304f\u3001\u591a\u304f\u306eRows_examined\u3092\u6301\u3064\u30af\u30a8\u30ea\u3082\u30ed\u30b0\u306b\u8a18\u9332\u3057\u307e\u3059\u3002\u6b21\u306b\u3001EXPLAIN\u3068EXPLAIN ANALYZE\u3092\u4f7f\u7528\u3057\u3066\u3001\u500b\u3005\u306e\u8a08\u753b\u30b9\u30c6\u30c3\u30d7\u306e\u5b9f\u969b\u306e\u5b9f\u884c\u6642\u9593\u3092\u78ba\u8a8d\u3057\u3001\u6700\u5927\u306e\u30b3\u30b9\u30c8\u30d6\u30ed\u30c3\u30af\u3092\u8a8d\u8b58\u3057\u307e\u3059\u3002\u518d\u73fe\u6027\u306e\u3042\u308b\u7d50\u679c\u3092\u5f97\u308b\u305f\u3081\u306b\u3001\u540c\u4e00\u306e\u30c7\u30fc\u30bf\u72b6\u614b\u3067\u30c6\u30b9\u30c8\u3092\u884c\u3044\u3001\u7af6\u5408\u3059\u308bcron\u30b8\u30e7\u30d6\u306e\u3088\u3046\u306a\u5e72\u6e09\u306e\u539f\u56e0\u3092\u5207\u308a\u5206\u3051\u307e\u3059\u3002\u79c1\u306e <a href=\"https:\/\/webhosting.de\/ja\/mysql%e3%81%ae%e9%81%85%e3%81%84%e3%82%af%e3%82%a8%e3%83%aa%e3%83%ad%e3%82%b0%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%81%afqueryperf%e3%82%92%e5%88%86%e6%9e%90%e3%81%99%e3%82%8b\/\">\u9045\u3044\u30af\u30a8\u30ea\u30ed\u30b0<\/a>, \u3053\u308c\u306f\u6709\u52b9\u5316\u304b\u3089\u8a55\u4fa1\u3078\u3068\u3064\u306a\u304c\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210\u3001\u66f8\u304d\u63db\u3048\u3001\u8a2d\u5b9a\u306e\u3069\u308c\u304c\u305d\u308c\u305e\u308c\u306e\u30af\u30a8\u30ea\u306b\u6700\u5927\u306e\u52b9\u679c\u3092\u3082\u305f\u3089\u3059\u304b\u3092\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n<h2>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3001\u30ed\u30c3\u30af\u3001\u5206\u96e2\u304c\u4e00\u76ee\u3067\u308f\u304b\u308b<\/h2>\n<p>\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u30d7\u30e9\u30f3\u3067\u306f\u306a\u304f\u30ed\u30c3\u30af\u306b\u8d77\u56e0\u3059\u308b\u3082\u306e\u304b\u3069\u3046\u304b\u3092\u5206\u6790\u3059\u308b\u3002\u30a4\u30ceDB <strong>REPEATABLE READ<\/strong> \u306f\u5805\u5b9f\u3060\u304c\u3001\u30ec\u30f3\u30b8\u30b9\u30ad\u30e3\u30f3\u306b\u306f\u554f\u984c\u304c\u3042\u308b\u3002 <strong>\u30ae\u30e3\u30c3\u30d7\u30ed\u30c3\u30af<\/strong> \u3092\u751f\u6210\u3059\u308b\u3002\u7af6\u5408\u3059\u308b\u66f8\u304d\u8fbc\u307f\u304c\u6d3b\u767a\u306a\u3068\u304d\u306f\u3001\u30bb\u30ab\u30f3\u30c0\u30ea\u30fc\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u306e\u5bfe\u8c61\u5916\u306e\u7bc4\u56f2\u691c\u7d22\u3092\u907f\u3051\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4ecb\u3057\u3066\u30a2\u30af\u30bb\u30b9\u30d1\u30b9\u3092\u3088\u308a\u6b63\u78ba\u306b\u5236\u5fa1\u3059\u308b\u3002\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306f\u5c0f\u3055\u304f\u77ed\u6642\u9593\u306b\u3057\u3001\u30ed\u30c3\u30af\u304c\u3059\u3050\u306b\u89e3\u653e\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002\u5927\u91cf\u306e\u5909\u66f4\u306b\u3064\u3044\u3066\u306f\u3001\u30d0\u30c3\u30c1\u3067\u4f5c\u696d\u3057\u3001\u4ee5\u4e0b\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\u3092\u8a55\u4fa1\u3059\u308b\u3002 <strong>innodb_flush_log_at_trx_commit<\/strong> \u305d\u3057\u3066 <strong>sync_binlog<\/strong> \u3092\u3001\u671b\u307e\u3057\u3044\u8010\u4e45\u6027\u3068\u3044\u3046\u6587\u8108\u3067\u5b9a\u7fa9\u3057\u3066\u3044\u308b\u3002\u3053\u3046\u3057\u3066\u79c1\u306f\u3001\u30d7\u30e9\u30f3\u306e\u6700\u9069\u5316\u3068\u30ed\u30c3\u30af\u306e\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3092\u660e\u78ba\u306b\u533a\u5225\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n<h2>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306b\u5f79\u7acb\u3064MySQL 8.0\u306e\u6a5f\u80fd<\/h2>\n\n<p>\u79c1\u306f\u3053\u3046\u3057\u3066\u3044\u308b\u3002 <strong>\u30d2\u30b9\u30c8\u30b0\u30e9\u30e0<\/strong> \u63a8\u5b9a\u30a8\u30e9\u30fc\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u304c\u4e0d\u5747\u7b49\u306b\u5206\u5e03\u3057\u3066\u3044\u308b\u30ab\u30e9\u30e0\u306b\u5bfe\u3057\u3066ANALYZE TABLE\u3092\u4f7f\u7528\u3057\u3066\u66f4\u65b0\u3057\u307e\u3059\u3002JOIN_FIXED_ORDER\u306e\u3088\u3046\u306a\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306e\u30d2\u30f3\u30c8\u306f\u3001\u30d2\u30e5\u30fc\u30ea\u30b9\u30c6\u30a3\u30c3\u30af\u304c\u9593\u9055\u3063\u3066\u3044\u3066\u3001\u6e2c\u5b9a\u5f8c\u306b\u305d\u308c\u3092\u660e\u78ba\u306b\u8a3c\u660e\u3067\u304d\u308b\u5834\u5408\u306b\u306e\u307f\u4f7f\u7528\u3057\u307e\u3059\u3002CTE\u306f\u79c1\u306b\u3068\u3063\u3066\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u30af\u30a8\u30ea\u8a2d\u8a08\u3092\u5bb9\u6613\u306b\u3057\u3066\u304f\u308c\u307e\u3059\u304c\u3001\u30de\u30c6\u30ea\u30a2\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u304c\u6b63\u3057\u3044\u9078\u629e\u306a\u306e\u304b\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u304c\u6709\u52b9\u306a\u306e\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u30a2\u30c8\u30df\u30c3\u30afDDL\u3068InnoDB 8\u30b7\u30ea\u30fc\u30ba\u306e\u6539\u826f\u306f\u3001\u9577\u3044\u4e2d\u65ad\u306e\u30ea\u30b9\u30af\u3092\u5192\u3059\u3053\u3068\u306a\u304f\u3001\u8ca0\u8377\u304c\u304b\u304b\u3063\u305f\u72b6\u614b\u3067\u5909\u66f4\u3092\u52a0\u3048\u308b\u306e\u306b\u5f79\u7acb\u3063\u3066\u3044\u307e\u3059\u3002dev.mysql.com\u306b\u3088\u308b\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30fb\u30b9\u30ad\u30fc\u30de\u306b\u3082\u5229\u70b9\u304c\u3042\u308b\u3002 <strong>\u6307\u6a19<\/strong> \u5f15\u3063\u5f35\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/mysql_query_optimization_tech_4821.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u660e\u7d30\u66f8\u4f5c\u6210\u3001\u30d0\u30c3\u30c1\u51e6\u7406\u3001\u30d0\u30eb\u30af\u51e6\u7406<\/h2>\n<p>\u79c1\u306f\u3053\u3046\u3057\u3066\u3044\u308b\u3002 <strong>\u6e96\u5099\u3055\u308c\u305f\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8<\/strong> \u30d1\u30fc\u30b9\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u524a\u6e1b\u3057\u3001\u30d7\u30e9\u30f3\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u3001\u7e70\u308a\u8fd4\u3057\u30af\u30a8\u30ea\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002\u66f8\u304d\u8fbc\u307f\u8ca0\u8377\u306b\u3064\u3044\u3066\u306f\u3001\u30a4\u30f3\u30b5\u30fc\u30c8\u3092\u8907\u6570\u884c\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306b\u96c6\u7d04\u3057\u3066 <strong>\u30a4\u30f3\u30b5\u30fc\u30c8 ... \u91cd\u8907\u30ad\u30fc\u66f4\u65b0\u6642<\/strong>, \u30b3\u30f3\u30d5\u30ea\u30af\u30c8\u304c\u983b\u767a\u3059\u308b\u5834\u5408\u5927\u898f\u6a21\u306a\u30a4\u30f3\u30dd\u30fc\u30c8\u306b\u306f <strong>\u30ed\u30fc\u30c9\u30c7\u30fc\u30bf<\/strong> \u305d\u3057\u3066\u3001\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8\u3068REDO\u30ed\u30b0\u30d5\u30e9\u30c3\u30b7\u30e5\u304c\u540c\u671f\u3092\u4fdd\u3064\u3088\u3046\u306b\u3001\u7ba1\u7406\u53ef\u80fd\u306a\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306b\u30d7\u30ed\u30bb\u30b9\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u3067\u306f\u3001\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u304c\u9577\u7d9a\u304d\u3059\u308b\u3088\u3046\u306b\u3057\u3001\u3059\u3079\u3066\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8\u3067\u65b0\u3057\u3044\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u751f\u6210\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306b\u5b89\u5b9a\u3057\u305f\u3001\u3088\u304f\u30d1\u30e9\u30e1\u30fc\u30bf\u5316\u3055\u308c\u305f\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3092\u63d0\u4f9b\u3059\u308b\u3002.<\/p>\n\n<h2>\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\uff1a\u30ea\u30fc\u30c9\u30fb\u30ec\u30d7\u30ea\u30ab\u3001\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u30ad\u30e3\u30c3\u30b7\u30f3\u30b0<\/h2>\n\n<p>\u914d\u5e03\u3059\u308b <strong>\u8aad\u307f\u7269<\/strong> \u500b\u3005\u306e\u30ce\u30fc\u30c9\u304c\u9ad8\u3044\u8aad\u307f\u8fbc\u307f\u8ca0\u8377\u3067\u6c57\u3092\u304b\u304d\u59cb\u3081\u308b\u3068\u3001\u3059\u3050\u306b\u30ec\u30d7\u30ea\u30ab\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u304c\u5c0f\u3055\u304f\u306a\u308b\u3088\u3046\u306b\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5225\u3001\u5730\u57df\u5225\u3001\u6642\u9593\u5225\u306b\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u884c\u3044\u3001\u66f8\u304d\u8fbc\u307f\u8ca0\u8377\u3092\u5747\u7b49\u306b\u3057\u307e\u3059\u3002\u30af\u30a8\u30ea\u30fb\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304c\u8a31\u3059\u9650\u308a\u3001\u30af\u30a8\u30ea\u30fb\u30d9\u30fc\u30b9\u30fb\u30ad\u30e3\u30c3\u30b7\u30e5\u30fb\u30b7\u30b9\u30c6\u30e0\u306b\u5207\u308a\u66ff\u3048\u3066\u3001\u7e70\u308a\u8fd4\u3057\u7d50\u679c\u304c\u3088\u308a\u65e9\u304f\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u91cd\u8981\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001TTL\u3092\u77ed\u304f\u8a2d\u5b9a\u3057\u3001\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u306b\u7121\u52b9\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u4e00\u8cab\u6027\u3092\u4fdd\u3061\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u5229\u76ca\u3092\u751f\u3080\u3088\u3046\u306b\u3059\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc\u3060\u3051\u306b\u3059\u3079\u3066\u306e\u554f\u984c\u3092\u88dc\u308f\u305b\u308b\u3053\u3068\u306a\u304f\u3001\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u30d1\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3044\u308b\u3002 <strong>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2<\/strong> \u9ad8\u3044\u3002.<\/p>\n\n<h2>\u5b89\u5b9a\u6027\u3001\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3001\u56de\u5e30\u9632\u6b62\u3092\u8a08\u753b\u3059\u308b<\/h2>\n<p>MySQL\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306f\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30a4\u30d9\u30f3\u30c8\u3068\u3057\u3066\u6271\u3046\uff1a\u65b0\u3057\u3044\u30d2\u30e5\u30fc\u30ea\u30b9\u30c6\u30a3\u30c3\u30af\u306f\u3001\u30af\u30a8\u30ea\u3092\u9ad8\u901f\u5316\u3059\u308b\u3053\u3068\u3082\u3042\u308b\u304c\u3001\u4f4e\u901f\u5316\u3059\u308b\u3053\u3068\u3082\u3042\u308b\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u5909\u66f4\u306e\u524d\u306b\u3001\u4ee3\u8868\u7684\u306aEXPLAIN\u3068EXPLAIN-ANALYZE\u306e\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3092\u4fdd\u5b58\u3057\u3001\u30af\u30ed\u30fc\u30f3\u4e0a\u3067\u8a08\u6e2c\u3057\u3001\u6700\u3082\u30b3\u30b9\u30c8\u306e\u304b\u304b\u308b\u30d1\u30b9\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u65e9\u3044\u6bb5\u968e\u3067\u30ea\u30b0\u30ec\u30c3\u30b7\u30e7\u30f3\u306e\u5019\u88dc\u3092\u898b\u3064\u3051\u308b\u3002\u79c1\u306f\u610f\u8b58\u7684\u306b <strong>\u4e0d\u53ef\u8996\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/strong> \u3068\u9078\u629e\u7684 <strong>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc<\/strong> \u4e00\u6642\u7684\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u6e96\u5099\u306f\u3067\u304d\u3066\u3044\u308b\u304c\u3001\u9038\u8131\u306f\u3059\u3079\u3066\u6587\u66f8\u5316\u3059\u308b\u3053\u3068\u3002\u305d\u306e\u76ee\u7684\u306f\u3001\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc\u306b\u826f\u597d\u306a\u7d71\u8a08\u3068\u30af\u30ea\u30fc\u30f3\u306a\u30b9\u30ad\u30fc\u30e0\u3067\u4ed5\u4e8b\u3092\u3055\u305b\u308b\u3053\u3068\u3067\u3042\u308a\u3001\u6c38\u4e45\u306b \u201e\u5f37\u5236 \u201c\u3059\u308b\u3053\u3068\u3067\u306f\u306a\u3044\u3002.<\/p>\n\n<h2>\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\uff1a\u79c1\u304c\u4e00\u8cab\u3057\u3066\u907f\u3051\u3066\u3044\u308b\u3053\u3068<\/h2>\n\n<p>\u3092\u4f7f\u3046\u3053\u3068\u306f\u306a\u3044\u3002 <strong>\u30bb\u30ec\u30af\u30c8<\/strong> * \u4e0d\u5fc5\u8981\u306a\u30ab\u30e9\u30e0\u306f\u30e1\u30e2\u30ea\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u3044\u3063\u3071\u3044\u306b\u3057\u3066\u3057\u307e\u3046\u304b\u3089\u3060\u3002WHERE\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u304d\u30ab\u30e9\u30e0\u3067\u306f\u3001LOWER()\u306e\u3088\u3046\u306a\u95a2\u6570\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6d88\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u4f7f\u308f\u306a\u3044\u3002\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u30d5\u30a3\u30eb\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u3001\u5927\u304d\u306aOR\u30c1\u30a7\u30a4\u30f3\u3092UNION ALL\u306b\u5206\u5272\u3057\u3001\u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3002\u5927\u304d\u306a\u30c6\u30fc\u30d6\u30eb\u3067\u306fORDER BY RAND()\u306f\u4f7f\u308f\u306a\u3044\u3002\u30e9\u30f3\u30c0\u30e0\u306aID\u3001\u30aa\u30d5\u30bb\u30c3\u30c8\u3001\u3042\u308b\u3044\u306f\u4e8b\u524d\u306b\u8a08\u7b97\u3057\u305f\u30bb\u30c3\u30c8\u3092\u4f7f\u3046\u3002\u307e\u305f\u3001\u30af\u30a8\u30ea\u5185\u3067JOIN\u304c\u591a\u3059\u304e\u306a\u3044\u3088\u3046\u306b\u3057\u3001\u5fc5\u8981\u3067\u3042\u308c\u3070\u3001\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3055\u308c\u305f <strong>\u7d50\u679c<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/mysql_opt_hosting_2973.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30b9\u30ad\u30fc\u30de\u8a2d\u8a08\u306e\u5fae\u8abf\u6574\uff1a\u30c7\u30fc\u30bf\u578b\u3001\u30ab\u30d0\u30fc\u30ea\u30f3\u30b0\u30fb\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u751f\u6210\u30ab\u30e9\u30e0<\/h2>\n<p>\u30c7\u30fc\u30bf\u578b\u306f\u3067\u304d\u308b\u3060\u3051\u5c0f\u3055\u304f\u3001\u5fc5\u8981\u306a\u3060\u3051\u5927\u304d\u304f\u3059\u308b\uff1a\u3082\u3057\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u304c\u8a31\u3059\u306a\u3089\u3001BIGINT\u306e\u4ee3\u308f\u308a\u306bINT\u3092\u3001\u305d\u3057\u3066CHAR\u306f\u56fa\u5b9a\u9577\u306e\u3082\u306e\u3060\u3051\u3092\u4f7f\u3046\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u591a\u304f\u306e\u30ad\u30fc\u304c\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30fb\u30da\u30fc\u30b8\u306b\u53ce\u307e\u308a\u3001\u30d0\u30c3\u30d5\u30a1\u30fb\u30d7\u30fc\u30eb\u304c\u7d99\u7d9a\u3059\u308b\u3002\u9577\u3044VARCHAR\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5834\u5408\u3001\u79c1\u306f <strong>\u63a5\u982d\u8f9e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/strong> \u307e\u305f\u3001\u7167\u5408\u9806\u5e8f\u3092\u6587\u66f8\u5316\u3057\u3001\u6bd4\u8f03\u304c\u5b89\u5b9a\u3059\u308b\u3088\u3046\u306b\u3059\u308b\u3002\u30af\u30a8\u30ea\u304c\u6570\u30ab\u30e9\u30e0\u3057\u304b\u8aad\u307f\u8fbc\u307e\u306a\u3044\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a08\u753b\u3057\u307e\u3059\u3002 <strong>\u30ab\u30d0\u30fc\u30ea\u30f3\u30b0\u6307\u6570<\/strong>, \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001MySQL \u304c\u305d\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u307e\u3063\u305f\u304f\u89e6\u308c\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7279\u306b\u5171\u6709\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3067\u306f\u3001\u5f85\u3061\u6642\u9593\u304c\u8457\u3057\u304f\u77ed\u7e2e\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u8a08\u7b97\u3055\u308c\u305f\u691c\u7d22\u30ad\u30fc\uff08\u6b63\u898f\u5316\u3055\u308c\u305f\u96fb\u5b50\u30e1\u30fc\u30eb\u3084\u62bd\u51fa\u3055\u308c\u305fJSON\u5c5e\u6027\u306a\u3069\uff09\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u3059\u308b\u3002 <strong>\u751f\u6210\u3055\u308c\u305f\u5217<\/strong> \u3092\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u3059\u308b\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001WHERE\u5185\u306e\u95a2\u6570\u3092\u907f\u3051\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u53ef\u80fd\u306a\u30a2\u30af\u30bb\u30b9\u3092\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u308b\u3002JSON\/LOB\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u672c\u5f53\u306b\u8aad\u307f\u53d6\u308a\u30d1\u30b9\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002\u3082\u3057\u305d\u3046\u306a\u3089\u3001\u91cd\u8981\u306a\u5c5e\u6027\u3092\u578b\u4ed8\u3051\u3055\u308c\u305f\u5225\u306e\u30ab\u30e9\u30e0\u306b\u30b3\u30a2\u5316\u3059\u308b\u3002\u6700\u7d42\u7684\u306b\u306f\u3001\u660e\u78ba\u306b\u578b\u4ed8\u3051\u3055\u308c\u305f\u72ed\u3044\u30b9\u30ad\u30fc\u30de\u3067\u306f\u3001\u5e38\u306b\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u52dd\u5229\u3059\u308b\u3002.<\/p>\n\n<h2>\u8868\uff1a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30b7\u30ca\u30ea\u30aa\u306b\u5fdc\u3058\u305f\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u5bfe\u7b56<\/h2>\n\n<p>\u79c1\u306f\u4ee5\u4e0b\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u6982\u8981<\/strong>, \u65e5\u3005\u306e\u30d3\u30b8\u30cd\u30b9\u306b\u304a\u3044\u3066\u8fc5\u901f\u306a\u610f\u601d\u6c7a\u5b9a\u3068\u512a\u5148\u9806\u4f4d\u306e\u8a2d\u5b9a\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u5bfe\u7b56\u306f\u3001\u5171\u6709\u3001VPS\u3001\u5c02\u7528\u306a\u3069\u306e\u5178\u578b\u7684\u306a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3092\u5bfe\u8c61\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306f\u30e1\u30ea\u30c3\u30c8\u3068\u52b4\u529b\u3092\u8a55\u4fa1\u3057\u3001\u6295\u8cc7\u3057\u305f\u6642\u9593\u3042\u305f\u308a\u306e\u30a4\u30f3\u30d1\u30af\u30c8\u306b\u57fa\u3065\u3044\u3066\u6c7a\u5b9a\u3092\u4e0b\u3057\u307e\u3059\u3002\u3053\u306e\u8868\u306f\u3001\u30ec\u30d3\u30e5\u30fc\u306e\u969b\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3068\u3057\u3066\u3001\u307e\u305f\u958b\u767a\u30c1\u30fc\u30e0\u3068\u306e\u30c7\u30a3\u30b9\u30ab\u30c3\u30b7\u30e7\u30f3\u306e\u57fa\u790e\u3068\u3057\u3066\u4f7f\u7528\u3057\u3066\u3044\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u79c1\u306f\u5b9a\u671f\u7684\u306a\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u30fb\u30b9\u30c6\u30c3\u30d7\u3092\u81ea\u5206\u306e <strong>\u30d7\u30ed\u30bb\u30b9<\/strong>.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u5bfe\u7b56<\/th>\n      <th>\u76f4\u63a5\u5229\u76ca<\/th>\n      <th>\u3053\u3093\u306a\u4eba\u306b\u5411\u3044\u3066\u3044\u308b<\/th>\n      <th>\u7df4\u7fd2\u304b\u3089\u306e\u6ce8\u610f\u4e8b\u9805<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>innodb_buffer_pool_size<\/td>\n      <td>\u30c7\u30a3\u30b9\u30af\u306e\u8aad\u307f\u53d6\u308a\u56de\u6570\u304c\u6e1b\u308b<\/td>\n      <td>VPS\/\u5c02\u7528<\/td>\n      <td>50-70%\u306eRAM\u306b\u30bb\u30c3\u30c8\u3057\u3001\u30d2\u30c3\u30c8\u30ec\u30fc\u30c8\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/td>\n    <\/tr>\n    <tr>\n      <td>\u76ee\u306b\u898b\u3048\u306a\u3044\u6307\u6a19<\/td>\n      <td>\u30ea\u30b9\u30af\u306e\u306a\u3044\u30c6\u30b9\u30c8<\/td>\n      <td>\u88fd\u9020<\/td>\n      <td>\u524a\u9664\u3059\u308b\u524d\u306b\u52b9\u679c\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>EXPLAIN ANALYZE<\/td>\n      <td>\u73fe\u5b9f\u7684\u306a\u8a08\u753b\u671f\u9593<\/td>\n      <td>\u3059\u3079\u3066\u306e<\/td>\n      <td>\u9ad8\u4fa1\u306a\u30b9\u30c6\u30c3\u30d7\u306b\u96c6\u4e2d<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30af\u30a8\u30ea\u30fc\u306e\u66f8\u304d\u63db\u3048<\/td>\n      <td>\u5c11\u91cf\u306e\u4e2d\u9593\u91cf<\/td>\n      <td>\u5171\u6709\/VPS<\/td>\n      <td>EXISTS\u3001\u30b5\u30d6\u30bb\u30c3\u30c8\u3001WHERE\u306b\u95a2\u6570\u306a\u3057<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30ec\u30d7\u30ea\u30ab\u3092\u8aad\u3080<\/td>\n      <td>\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u30fb\u30ea\u30fc\u30c9<\/td>\n      <td>VPS\/\u5c02\u7528<\/td>\n      <td>\u30dd\u30b8\u30b7\u30e7\u30f3\u3068\u4e00\u8cab\u6027\u3092\u304d\u308c\u3044\u306b\u8ffd\u8de1<\/td>\n    <\/tr>\n    <tr>\n      <td>OPTIMIZE TABLE (InnoDB)<\/td>\n      <td>\u65ad\u7247\u5316\u306e\u6e1b\u5c11<\/td>\n      <td>\u8a08\u753b\u7684\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9<\/td>\n      <td>\u6e2c\u5b9a\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u30fb\u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u5f8c\u306e\u307f<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>\u7df4\u7fd2\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\uff1a\u6e2c\u5b9a\u304b\u3089\u30af\u30ea\u30fc\u30f3\u30d7\u30e9\u30f3\u307e\u3067<\/h2>\n\n<p>\u79c1\u306f\u6bce\u56de\u3001\u6b21\u306e\u3088\u3046\u306b\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3092\u59cb\u3081\u308b\u3002 <strong>\u898b\u672c\u5e02<\/strong>, \u30af\u30a8\u30ea\u30ed\u30b0\u3092\u9045\u304f\u3057\u3001\u30d4\u30fc\u30af\u3092\u7279\u5b9a\u3057\u3001\u30e1\u30c8\u30ea\u30af\u30b9\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002\u6b21\u306b\u3001EXPLAIN ANALYZE\u3092\u8aad\u307f\u3001Rows_examined\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u52b9\u679c\u3001\u7d50\u5408\u6226\u7565\u3092\u8abf\u3079\u3001\u6700\u3082\u30b3\u30b9\u30c8\u306e\u304b\u304b\u308b\u30a8\u30c3\u30b8\u3092\u8a18\u9332\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u5177\u4f53\u7684\u306a\u5bfe\u7b56\u3092\u7df4\u308a\u307e\u3059\uff1a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u8ffd\u52a0\u3084\u8abf\u6574\u3001\u30af\u30a8\u30ea\u306e\u66f8\u304d\u63db\u3048\u3001\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u8abf\u6574\u3001\u305d\u3057\u3066A\/B\u6e2c\u5b9a\u3002\u6e2c\u5b9a\u3067\u5229\u76ca\u304c\u51fa\u305f\u5834\u5408\u306f\u3001\u305d\u306e\u5909\u66f4\u3092\u5b9f\u65bd\u3057\u3001\u5b9f\u969b\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u6642\u9593\u5e2f\u3067\u306e\u30d5\u30a9\u30ed\u30fc\u30a2\u30c3\u30d7\u6e2c\u5b9a\u3092\u8a08\u753b\u3057\u307e\u3059\u3002\u826f\u3044\u8a08\u753b\u3092\u7acb\u3066\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u920d\u3044\u3088\u3046\u3067\u3042\u308c\u3070\u3001\u30db\u30b9\u30c8\u4ee5\u5916\u306e\u53ef\u80fd\u6027\u306e\u3042\u308b\u539f\u56e0\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u624b\u304c\u304b\u308a\u3092\u3082\u3068\u306b\u4f5c\u696d\u3057\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%81%aa%e3%81%9c%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ae%e3%83%ac%e3%82%a4%e3%83%86%e3%83%b3%e3%82%b7%e3%83%bc%e3%81%8c%e9%ab%98%e3%81%84%e3%81%ae%e3%81%af%e3%83%9b%e3%82%b9\/\">\u9ad8\u3044\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u9045\u5ef6<\/a>, \u8a2d\u8a08\u30df\u30b9\u3092\u898b\u3064\u3051\u308b\u305f\u3081\u306b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/hosting-optimierung-8371.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fb\u30c8\u30ec\u30fc\u30b9\u3068EXPLAIN JSON\u306e\u7684\u3092\u7d5e\u3063\u305f\u4f7f\u7528<\/h2>\n<p>\u30c8\u30ea\u30c3\u30ad\u30fc\u306a\u30b1\u30fc\u30b9\u306b\u306f <strong>\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc\u30fb\u30c8\u30ec\u30fc\u30b9<\/strong> \u305d\u3057\u3066\u3001\u3069\u306e\u4ee3\u66ff\u6848\u304c\u5374\u4e0b\u3055\u308c\u305f\u306e\u304b\u3001\u306a\u305c\u5374\u4e0b\u3055\u308c\u305f\u306e\u304b\u3092\u8aad\u3080\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30b9\u30c8\u306e\u4eee\u5b9a\uff08\u4f8b\uff1a\u9078\u629e\u6027\uff09\u3084\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u6b20\u843d\u304c\u3001\u4e0d\u5229\u306a\u6c7a\u5b9a\u306b\u3064\u306a\u304c\u3063\u305f\u304b\u3069\u3046\u304b\u304c\u308f\u304b\u308b\u3002JSON\u5f62\u5f0f\u306eEXPLAIN\u306f\u3001\u201ecost_info\u201c\u3001\u201eused_key_parts\u201c\u3001\u30c6\u30f3\u30dd\u30e9\u30ea\u30c6\u30fc\u30d6\u30eb\u3068\u30d5\u30a1\u30a4\u30eb\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d5\u30e9\u30b0\u306a\u3069\u306e\u8ffd\u52a0\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4e0e\u3048\u3066\u304f\u308c\u308b\u3002\u3053\u308c\u3089\u306e\u51fa\u529b\u3092\u5909\u66f4\u524d\u3068\u5909\u66f4\u5f8c\u3067\u6bd4\u8f03\u3057\u3001\u30b3\u30b9\u30c8\u30fb\u30d1\u30b9\u304c\u6539\u5584\u3055\u308c\u305f\u3053\u3068\u3092\u793a\u3059\u3002\u65e5\u3005\u306e\u6982\u8981\u306b\u3064\u3044\u3066\u306f\u3001\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u30fb\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u304b\u3089\u8981\u7d04\u3057\u305f\u30e1\u30c8\u30ea\u30af\u30b9\u3082\u4f7f\u7528\u3057\u3066\u3001\u65e9\u671f\u306b\u7570\u5e38\u5024\u3092\u7279\u5b9a\u3057\u3001\u30af\u30a8\u30ea\u30fb\u30d1\u30bf\u30fc\u30f3\u3054\u3068\u306b\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u30ef\u30fc\u30c9\u30d7\u30ec\u30b9\u3068\u30a2\u30d7\u30ea\u306e\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\uff1a\u65e5\u5e38\u751f\u6d3b\u306b\u304a\u3051\u308b\u4ed5\u69d8<\/h2>\n\n<p>\u3067\u30b9\u30a4\u30c3\u30c1\u3092\u5165\u308c\u308b\u3002 <strong>\u30ef\u30fc\u30c9\u30d7\u30ec\u30b9<\/strong> \u30a2\u30d7\u30ea\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u30c7\u30fc\u30bf\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u3067\u5927\u304d\u304f\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3001\u30c8\u30e9\u30f3\u30b8\u30a7\u30f3\u30c8\u3092\u77ed\u304f\u4fdd\u3064\u3053\u3068\u3002\u5e83\u3044JSON\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u96c6\u8a08\u3092\u9045\u304f\u3059\u308b\u306e\u3067\u30011\u884c\u306b\u591a\u304f\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u683c\u7d0d\u3059\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7279\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306fInnoDB\u306b\u5207\u308a\u66ff\u3048\u3001\u4e00\u8cab\u3057\u3066\u30aa\u30fc\u30c8\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\u306ePK\u3092\u4f7f\u7528\u3057\u3001\u975e\u5e38\u306b\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u30ea\u30fc\u30c9\u30fb\u30ec\u30d7\u30ea\u30ab\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u691c\u8a0e\u3059\u308b\u3002\u30b7\u30e7\u30c3\u30d7\u3084API\u306e\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3067\u306f\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u30d5\u30a3\u30eb\u30bf\u30fc\u3084\u30bd\u30fc\u30c8\u53ef\u80fd\u306a\u30ab\u30e9\u30e0\u306b\u6cbf\u3063\u305f\u7d30\u304b\u3044\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u6ce8\u610f\u3092\u6255\u3046\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u3092\u76ee\u306b\u898b\u3048\u3066\u77ed\u304f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 <strong>\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0<\/strong> \u306f\u3084\u308a\u3059\u304e\u3060\u3002.<\/p>\n\n<h2>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068<\/h2>\n\n<p>\u3092\u4f7f\u3046\u3068\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3067\u5f37\u3044\u52b9\u679c\u304c\u5f97\u3089\u308c\u308b\u3093\u3060\u3002 <strong>MySQL<\/strong> \u304d\u308c\u3044\u306a\u30b9\u30ad\u30fc\u30de\u3001\u512a\u308c\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u660e\u78ba\u306a\u30af\u30a8\u30ea\u3092\u6301\u3064\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u30fc\u30af\u30a8\u30ea\u3002\u7d71\u8a08\u306f\u5e38\u306b\u65b0\u9bae\u306b\u4fdd\u3061\u3001EXPLAIN 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