{"id":2735,"date":"2017-03-15T02:13:56","date_gmt":"2017-03-14T17:13:56","guid":{"rendered":"http:\/\/taitan916.info\/blog\/?p=2735"},"modified":"2024-01-13T14:43:10","modified_gmt":"2024-01-13T05:43:10","slug":"post-2735","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/2735","title":{"rendered":"MySQL\u3067\u7d4c\u5ea6\u7def\u5ea6\u304b\u3089\u534a\u5f84\u25cbKm\u306e\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u7d4c\u5ea6\u3068\u7def\u5ea6\u3092text\u578b\u3068\u3057\u3066\u683c\u7d0d\u3057\u3066\u3044\u308bMySQL\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u308a\u3001\u6307\u5b9a\u3057\u305f\u7d4c\u5ea6\u7def\u5ea6\u304b\u3089\u534a\u5f84\u25cbkm\u306e\u30c7\u30fc\u30bf\u4e00\u89a7\u3092\u62bd\u51fa\u3057\u305f\u304b\u3063\u305f\u3002\u4ee5\u4e0b\u306b\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u30bd\u30fc\u30b9<\/h2>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">$km = 1; \/\/\u534a\u5f84km\u3002\u534a\u5f84500m\u3092\u51fa\u3057\u305f\u3044\u5834\u5408\u306f0.5\u306b\u3059\u308b\r\n$sql = '\r\n    SELECT\r\n    *, \r\n    (6371 * ACOS(\r\n        COS(RADIANS(\u7def\u5ea6))\r\n        * COS(RADIANS(lat))\r\n        * COS(RADIANS(`long`) - RADIANS(\u7d4c\u5ea6))\r\n        + SIN(RADIANS(\u7def\u5ea6))\r\n        * SIN(RADIANS(lat))\r\n    )) AS distance\r\n    FROM\r\n        table\r\n    WHERE status = 1 \r\n    HAVING\r\n        distance &lt;= ' . $km . ' \r\n    ORDER BY\r\n        distance\r\n';<\/pre>\n<p>SQL\u6587\u5185\u306elong\u3092`(\u30a2\u30af\u30b5\u30f3\u30b0\u30e9\u30fc\u30d6)\u3067\u56f2\u3093\u3067\u3044\u308b\u306e\u306f\u4e88\u7d04\u8a9e\u306b\u5f53\u305f\u308b\u305f\u3081\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u305d\u306e\u4ed6<\/h2>\n<p>\u6700\u521d\u306f\u7d4c\u5ea6\u3068\u7def\u5ea6\u304b\u30890.001\u305a\u3064\u3050\u3089\u3044\u5f15\u3044\u305f\u308a\u8db3\u3057\u305f\u308a\u3057\u3066\u62bd\u51fa\u3057\u305f\u3051\u3069\u304b\u306a\u308a\u4f4d\u7f6e\u60c5\u5831\u304c\u504f\u3063\u305f\u3002\u4eca\u56de\u306e\u65b9\u6cd5\u306f\u304d\u3063\u3061\u308a\u3068\u6307\u5b9a\u3057\u305f\u7d4c\u5ea6\u7def\u5ea6\u3092\u4e2d\u5fc3\u306b\u62bd\u51fa\u3067\u304d\u305f\u3002<\/p>\n<p>\u5c1a\u3001\u7d4c\u5ea6\u7def\u5ea6\u3092MySQL\u3067\u6271\u3046\u5834\u5408\u306ffloat\u3084text\u3067\u306f\u306a\u304fgeometry\u3092\u4f7f\u3046\u306e\u304c\u826f\u3044\u3063\u307d\u3044\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>\u53c2\u8003\u30b5\u30a4\u30c8<\/strong><\/h2>\n<p><a href=\"https:\/\/www.firstlogic.co.jp\/blog\/lab\/raku\/71\" target=\"_blank\" rel=\"noopener\">https:\/\/www.firstlogic.co.jp\/blog\/lab\/raku\/71<\/a><\/p>\n<p><a href=\"http:\/\/blog.asial.co.jp\/473\" target=\"_blank\" rel=\"noopener\">http:\/\/blog.asial.co.jp\/473<\/a><\/p>\n<p>&nbsp;<\/p>\n<h2><strong>\u4e88\u7d04\u8a9e<\/strong><\/h2>\n<p><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/5.6\/ja\/reserved-words.html\" target=\"_blank\" rel=\"noopener\">https:\/\/dev.mysql.com\/doc\/refman\/5.6\/ja\/reserved-words.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7d4c\u5ea6\u3068\u7def\u5ea6\u3092text\u578b\u3068\u3057\u3066\u683c\u7d0d\u3057\u3066\u3044\u308bMySQL\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u308a\u3001\u6307\u5b9a\u3057\u305f\u7d4c\u5ea6 ... <\/p>\n","protected":false},"author":1,"featured_media":1072,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-2735","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/2735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/comments?post=2735"}],"version-history":[{"count":0,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/2735\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media\/1072"}],"wp:attachment":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media?parent=2735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/categories?post=2735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/tags?post=2735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}