{"id":14675,"date":"2021-10-03T18:37:07","date_gmt":"2021-10-03T09:37:07","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=14675"},"modified":"2023-05-28T08:27:35","modified_gmt":"2023-05-27T23:27:35","slug":"%e3%80%90%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%80%91%e3%82%a2%e3%83%b3%e3%83%81%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3%e3%80%8ceav%e3%80%8d","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=14675","title":{"rendered":"\u3010\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3011\u30c6\u30fc\u30d6\u30eb\u8a2d\u8a08\uff1a\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u300cEAV\u300d"},"content":{"rendered":"<h2>EAV(\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30fb\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u30fb\u30d0\u30ea\u30e5\u30fc\uff09<\/h2>\n<p><span style=\"color: #ff0000;\"><strong>\u8907\u6570\u306e\u76ee\u7684\u306b\u4f7f\u308f\u308c\u308b\u30ab\u30e9\u30e0\u3092\u7528\u610f\u3059\u308b\u8a2d<\/strong><strong>\u8a08<\/strong><\/span>\u3067\u3059\u3002\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c6\u30fc\u30d6\u30eb\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u5c5e\u6027\u540d<\/th>\n<th>\u5024<\/th>\n<\/tr>\n<tr>\n<td>\u5e74\u9f62<\/td>\n<td>32<\/td>\n<\/tr>\n<tr>\n<td>\u8da3\u5473<\/td>\n<td>\u30b2\u30fc\u30e0<\/td>\n<\/tr>\n<tr>\n<td>\u7279\u6280<\/td>\n<td>\u91ce\u7403<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7d50\u8ad6\u304b\u3089\u7533\u3057\u307e\u3059\u3068\u3001\u6c4e\u7528\u6027\u306f\u9ad8\u3044\u3067\u3059\u304c\u3001RDB\u304c\u672c\u6765\u6301\u3063\u3066\u3044\u308b\u591a\u304f\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u640d\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002RDB\u306e\u8cac\u52d9\u3067\u3042\u308b\u30c7\u30fc\u30bf\u3092\u5b88\u308b\u3053\u3068\u304c\u96e3\u3057\u3044\u3067\u3059\u3002<\/p>\n<h2>\u30e1\u30ea\u30c3\u30c8<\/h2>\n<p>\u3053\u306e\u8a2d\u8a08\u3067\u306f\u3069\u306e\u3088\u3046\u306a\u5c5e\u6027\u540d\u3084\u5024\u3067\u3082\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u3082\u6b63\u898f\u5316\u3082\u5fc5\u8981\u306a\u3044\u306e\u3067\u8a2d\u8a08\u6642\u306b\u4f59\u8a08\u306a\u624b\u9593\u304c\u4e0d\u8981\u3067\u3059\u3002\uff08DB\u8a2d\u8a08\u66f8\u306a\u3069\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306a\u3069\u3082\u6700\u4f4e\u9650\u3067\u6e08\u307f\u307e\u3059\u3002\u8a2d\u8a08\u601d\u60f3\u306e\u89e3\u8aac\u66f8\u304f\u3089\u3044\u306f\u3042\u3063\u305f\u65b9\u304c\u826f\u3044\u304b\u3082\u3067\u3059\u304c\u3002\uff09<\/p>\n<h2>\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n<h3>\u5024\u3092\u53d6\u308a\u51fa\u3059\u307e\u3067\u4ee5\u4e0b\u306e\u72b6\u614b\u306f\u308f\u304b\u3089\u306a\u3044\u70b9<\/h3>\n<ul>\n<li>\u305d\u3082\u305d\u3082\u610f\u56f3\u3057\u305f\u5c5e\u6027\u540d\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u304c\u308f\u304b\u3089\u306a\u3044\u3002<\/li>\n<li>\u305d\u306e\u5c5e\u6027\u540d\u306b\u5bfe\u3057\u3066\u5024\u304c\u3042\u308b\u304b<\/li>\n<li>\u5c5e\u6027\u540d\u3068\u5024\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u6b63\u3057\u3044\u304b\u3002<\/li>\n<li>\u5c5e\u6027\u540d\u4e00\u89a7<\/li>\n<\/ul>\n<h3>\u8a2d\u8a08\u306b\u554f\u984c\u304c\u3042\u308b\u3002<\/h3>\n<h4>\u5fc5\u9808\u5c5e\u6027(NOT 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NULL\u5236\u7d04\u3092\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h4>\u30c7\u30fc\u30bf\u578b\u304c\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002<\/h4>\n<p>\u65e5\u4ed8\u3001\u6570\u5024\u3001\u6587\u5b57\u306a\u3069\u69d8\u3005\u306a\u30c7\u30fc\u30bf\u578b\u306e\u5024\u304c\u5165\u3063\u3066\u304f\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u3067\u3001\u30c7\u30fc\u30bf\u578b\u306f\u6307\u5b9a\u3067\u304d\u307e\u305b\u3093\u3002\uff08\u4f8b\u3048\u3070\u3001\u65e5\u4ed8\u3068\u304b\u3067\u3042\u308c\u3070\u901a\u5e38\u306fDATETIME\u578b\u306a\u3069\u3067\u65e5\u6642\u306e\u8a2d\u5b9a\u3067\u7e1b\u308b\u306e\u304c\u666e\u901a\u3067\u3059\u3002\uff09<\/p>\n<p>\u30c7\u30fc\u30bf\u306e\u5236\u7d04\u3082\u3067\u304d\u306a\u3044\u4e0a\u3001\u30c7\u30fc\u30bf\u304c\u4e00\u5b9a\u3067\u306f\u306a\u3044\u306e\u3067\u691c\u7d22\u7bc4\u56f2\u306e\u6307\u5b9a\u3092\u59cb\u3081SELECT\u6587\u3067\u306e\u30c7\u30fc\u30bf\u306e\u691c\u7d22\u4e0a\u304b\u306a\u308a\u4e0d\u5229\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\uff08EAV\u30d1\u30fc\u30bf\u30f3\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u691c\u7d22\u306e\u8a2d\u8a08\u306f\u307b\u307c\u7121\u7406\u3067\u3057\u3087\u3046\u3002\uff09<\/p>\n<h4>\u6b63\u898f\u5316\u3067\u304d\u3066\u306a\u3044\u306e\u3067\u5916\u90e8\u30ad\u30fc\u5236\u7d04\u3092\u5f37\u5236\u3067\u304d\u306a\u3044\u3002<\/h4>\n<p>\u540c\u3058\u610f\u5473\u3067\u3082\u8868\u8a18\u9055\u3044\u306a\u3069\u304c\u767a\u751f\u3057\u3046\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\uff08\u8868\u8a18\u63fa\u308c\uff09\u3001\u672c\u6765\u3067\u4f8b\u3048\u3070\u3001\u300c\u90fd\u9053\u5e9c\u770c\u30c6\u30fc\u30d6\u30eb\u300d\u3068\u300c\u90fd\u9053\u5e9c\u770cID\u300d\u3067\u5916\u90e8\u30ad\u30fc\u7d4c\u7531\u3067\u6b63\u898f\u5316\u3055\u308c\u3066\u3044\u3066\u8868\u8a18\u306e\u9055\u3046\u5024\u304c\u5165\u3063\u3066\u304f\u308b\u3053\u3068\u306f\u306a\u3044\u3067\u3059\u304c\u540c\u3058\u610f\u5473\u306e\u5024\u3067\u3082\u8868\u8a18\u63fa\u308c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h4>\u5c5e\u6027\u540d\u3092\u88dc\u3046\u5fc5\u8981\u304c\u3042\u308b\u3002<\/h4>\n<p>\u5c5e\u6027\u540d\u81ea\u4f53\u3082\u30bf\u30a4\u30dd\u306a\u3069\u3067\u9593\u9055\u3063\u305f\u8868\u8a18\u306a\u3069\u304c\u5165\u3063\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u5e74\u9f62\u3068\u3044\u3046\u5c5e\u6027\u540d\u306b\u3057\u305f\u3044\u306e\u306b\u5e74\u6708\u307f\u305f\u3044\u306a\u5c5e\u6027\u540d\u306b\u30bf\u30a4\u30dd\u3067\u8aa4\u3063\u3066\u5165\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u3088\u3063\u3066\u5f8c\u3067\u898b\u305f\u6642\u306b\u4f55\u306e\u30ab\u30e9\u30e0\u304b\u3069\u3046\u304b\u308f\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<h2>EAV\u306e\u4ee3\u66ff<\/h2>\n<p>EAV\u306e\u4ee3\u66ff\u3068\u3057\u3066JSON\u578b\u304c\u51fa\u3066\u304d\u307e\u3057\u305f\u3002(MySQL5.7\u3001PostgreSQL9.3\u306a\u3069\uff09<\/p>\n<p>\u3053\u308c\u306a\u3089JSON\u30c7\u30fc\u30bf\u3092\u305d\u306e\u307e\u307eDB\u306b\u4fdd\u5b58\u3067\u304d\u308b\u306e\u3067EAV\u3092\u4f7f\u3046\u3088\u308a\u306f\u30de\u30b7\u306b\u306a\u3063\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002\u305f\u3060\u3001\u305d\u308c\u3067\u3082\u30e1\u30ea\u30c7\u30e1\u304c\u3042\u308a\u307e\u3059\u3002\u8a73\u3057\u304f\u306f\u4e0b\u8a18\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote 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[&hellip;]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[14],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/14675"}],"collection":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14675"}],"version-history":[{"count":5,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/14675\/revisions"}],"predecessor-version":[{"id":20748,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/14675\/revisions\/20748"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14675"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}