{"id":4718,"date":"2018-06-21T02:37:45","date_gmt":"2018-06-20T17:37:45","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=4718"},"modified":"2023-05-27T23:20:21","modified_gmt":"2023-05-27T14:20:21","slug":"sql%e6%96%87%e3%82%92%e6%9b%b8%e3%81%8f%e5%a0%b4%e5%90%88%e3%81%ae%e7%b4%b0%e3%81%8b%e3%81%84%e6%b3%a8%e6%84%8f%e3%83%9d%e3%82%a4%e3%83%b3%e3%83%88","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=4718","title":{"rendered":"\u3010SQL\u3011SELECT\u6587\u306e\u8a55\u4fa1\u9806"},"content":{"rendered":"<p><span style=\"color: #ff0000;\"><strong>SELECT\u6587\u306f\u3001SQL\u6587\u306e\u4e2d\u3067\u3082\u6700\u3082\u57fa\u672c\u7684\u306a\u6587\u306e\u4e00\u3064\u3067\u3059\u304c\u3001<\/strong><strong>\u9006\u306b\u8a00\u3048\u3070\u3001\u958b\u767a\u6642\u306b\u6700\u3082\u8907\u96d1\u306b\u306a\u308a\u3084\u3059\u3044\u6587<\/strong><\/span>\u3067\u3082\u3042\u308a\u307e\u3059\u3002SELECT\u6587\u306e\u8907\u96d1\u3055\u306b\u6bd4\u3079\u308c\u3070\u3001INSERT\u3001UPDATE\u3001DELETE\u7b49\u306e\u6587\u306f\u305d\u3053\u307e\u3067\u8907\u96d1\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u304b\u306a\u308a\u5965\u304c\u6df1\u3044\u3067\u3059\u304c\u3001\u958b\u767a\u6642\u306b\u77e5\u3063\u3066\u3044\u308b\u3068\u77e5\u3063\u3066\u3044\u306a\u3044\u306e\u3067\u306f\u3001SQL\u306e\u4f5c\u6210\u52b9\u7387\u304c\u5168\u7136\u5909\u308f\u3063\u3066\u304f\u308b\u306e\u3067\u3001\u5fc5\u305a\u899a\u3048\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>SELECT\u6587\u306e\u8a55\u4fa1\u9806\u5e8f<\/h2>\n<p>SELECT\u6587\u306f\u3001\u4e0b\u8a18\u306e\u9806\u756a\u3067\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li>FROM\u53e5<\/li>\n<li>ON\u53e5<\/li>\n<li>JOIN\u53e5<\/li>\n<li>WHERE\u53e5<\/li>\n<li>GROUP BY\u53e5<\/li>\n<li>HAVING\u53e5<\/li>\n<li>SELECT\u53e5<\/li>\n<li>DISTINCT\u53e5<\/li>\n<li>ORDER BY\u53e5<\/li>\n<li>TOP\u53e5\uff08LIMIT\uff09<\/li>\n<\/ol>\n<p>\u3053\u308c\u3092\u898b\u308c\u3070\u5206\u304b\u308b\u3068\u304a\u308a\u3001<span style=\"color: #ff0000;\"><strong>SQL\u6587\u306e\u898b\u305f\u76ee\u306e\u901a\u308a\u306e\u5b9f\u884c\u9806\u5e8f\u306b\u306a\u3063\u3066\u3044\u307e\u305b\u3093<\/strong><\/span>\u306d\u3002\u975e\u5e38\u306b\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u3002<\/p>\n<p>\u306a\u306e\u3067\u3001\u4f8b\u3048\u3070\u300cSELECT\u53e5\u3067\u3064\u3051\u305f\u5225\u540d\u300d\u3092\u3001\u300cGROUP BY\u53e5\u300d\u3067\u53c2\u7167\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u3088\u3046\u306b\u3001<span style=\"color: #ff0000;\"><strong>\u5f8c\u306b\u8a55\u4fa1\u3055\u308c\u308b\u53e5\u306e\u5225\u540d\u306f\u53c2\u7167\u3067\u304d\u307e\u305b\u3093\u3002<\/strong><\/span><\/p>\n<h3>\u6ce8\u610f\u70b9<\/h3>\n<p>\u5b9f\u969b\u306eDB\u30a8\u30f3\u30b8\u30f3\u5185\u306e\u51e6\u7406\u624b\u9806\u306f\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u52b9\u7387\u3088\u304f\u7d44\u307f\u76f4\u3059\u305f\u3081\u3053\u306e\u9806\u756a\u306b\u8a55\u4fa1\u3055\u308c\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\uff08\u4f8b\u3048\u3070\u3001WHERE\u3067\u7247\u65b9\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u4e0d\u8981\u306e\u5834\u5408\u306fJOIN\u306e\u524d\u306bWHERE\u51e6\u7406\u3092\u304a\u3053\u306a\u3063\u3066\u5148\u306b\u4ef6\u6570\u3092\u6e1b\u3089\u3057\u3066\u304b\u3089JOIN\u3059\u308b\u3068\u3044\u3046\u3088\u3046\u306a\u6319\u52d5\u306b\u3082\u306a\u3063\u305f\u308a\u3059\u308b\u306a\u3069\uff09<\/p>\n<p>\u3053\u308c\u306f\u5b9f\u884c\u8a08\u753b\u3092\u898b\u308c\u3070\u308f\u304b\u3063\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n<h2>SELECT\u6587\u306e\u5404\u53e5\u3092\u8a18\u8ff0\u3059\u308b\u969b\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n<h3>FROM\u53e5<\/h3>\n<p>Oracle\u3067\u306f\u3001FROM\u53e5\u3067\u306f\u5225\u540d(AS\u53e5)\u3092\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u306a\u304a\u3001Oracle\u3067\u306f\u5fc5\u9808\u3067\u3059\u3002<\/p>\n<p>Oracle\u4ee5\u5916\u3060\u3063\u305f\u3089\u4f8b\u3048\u3070\u3001\u300cSELECT 1;\u300d\u306a\u3069\u3068\u56fa\u5b9a\u5024\u306e\u53d6\u5f97\u306a\u3069\u3092\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h3>ORDER BY\u53e5<\/h3>\n<p>ORDER BY\u53e5\u3092\u8a18\u8ff0\u3059\u308b\u5834\u5408\u306e\u30dd\u30a4\u30f3\u30c8\u3084\u3001\u7d30\u304b\u3044\u4ed5\u69d8\u306b\u3064\u3044\u3066\u306f\u4e0b\u8a18\u306e\u8a18\u4e8b\u3067\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"Sghm5jAWHK\"><p><a href=\"http:\/\/www.code-magagine.com\/?p=4811\">\u3010SQL\u3011\u300cORDER BY\u53e5\u300d\u306e\u7d30\u304b\u3044\u6319\u52d5\u306b\u3064\u3044\u3066<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"http:\/\/www.code-magagine.com\/?p=4811&#038;embed=true#?secret=Sghm5jAWHK\" data-secret=\"Sghm5jAWHK\" width=\"500\" height=\"282\" title=\"&#8220;\u3010SQL\u3011\u300cORDER BY\u53e5\u300d\u306e\u7d30\u304b\u3044\u6319\u52d5\u306b\u3064\u3044\u3066&#8221; &#8212; \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30de\u30ac\u30b8\u30f3\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>\u4e0a\u8a18\u8a18\u4e8b\u3067\u3082\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u304c\u3001RDBMS\u306f\u57fa\u672c\u7684\u306b\u30bd\u30fc\u30c8\u304c\u975e\u5e38\u306b\u82e6\u624b\u3067\u975e\u5e38\u306b\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308b\u51e6\u7406\u306b\u306a\u308a\u307e\u3059\u3002\u306a\u306e\u3067\u3001\u51fa\u6765\u308b\u3060\u3051\u30bd\u30fc\u30c8\u81ea\u4f53\u3092\u3057\u306a\u3044\u3088\u3046\u306a\u8a2d\u8a08\u306b\u3057\u305f\u65b9\u304c\u826f\u3044\u3053\u3068\u3082\u542b\u3081\u3066\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>SELECT\u53e5<\/h3>\n<p>\u57fa\u672c\u7684\u306b\u3001<span style=\"color: #ff0000;\"><strong>\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u300d<\/strong><\/span>\u306f\u3053\u306e\u53e5\u3067\u3057\u304b\u4f7f\u3048\u307e\u305b\u3093\u3002<\/p>\n<p>\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u306b\u95a2\u3057\u3066\u306f\u3001\u4e0b\u8a18\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"gRXfYeIP36\"><p><a href=\"http:\/\/www.code-magagine.com\/?p=4892\">\u3010SQL\u3011\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u300d(OLAP\u95a2\u6570)\u306b\u3064\u3044\u3066<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"http:\/\/www.code-magagine.com\/?p=4892&#038;embed=true#?secret=gRXfYeIP36\" data-secret=\"gRXfYeIP36\" width=\"500\" height=\"282\" title=\"&#8220;\u3010SQL\u3011\u300c\u30a6\u30a3\u30f3\u30c9\u30a6\u95a2\u6570\u300d(OLAP\u95a2\u6570)\u306b\u3064\u3044\u3066&#8221; &#8212; \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30de\u30ac\u30b8\u30f3\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<h3>ON\u53e5<\/h3>\n<p>JOIN\u306eON\u53e5\u306f\u5358\u7d14\u306b\u30c6\u30fc\u30d6\u30eb\u540c\u58eb\u3092\u7d50\u5408\u3059\u308b\u305f\u3081\u306e\u6761\u4ef6\u3092\u8a18\u8ff0\u3059\u308b\u3060\u3051\u306e\u6d3b\u7528\u6cd5\u304c\u3088\u304f\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"RdHuBgzZDj\"><p><a href=\"http:\/\/www.code-magagine.com\/?p=14748\">\u3010SQL\u3011\u300cON\u53e5\u300d\u306e\u610f\u5916\u3068\u77e5\u3089\u306a\u3044\u6d3b\u7528\u6cd5<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"http:\/\/www.code-magagine.com\/?p=14748&#038;embed=true#?secret=RdHuBgzZDj\" data-secret=\"RdHuBgzZDj\" width=\"500\" height=\"282\" title=\"&#8220;\u3010SQL\u3011\u300cON\u53e5\u300d\u306e\u610f\u5916\u3068\u77e5\u3089\u306a\u3044\u6d3b\u7528\u6cd5&#8221; &#8212; \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30de\u30ac\u30b8\u30f3\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>\u305f\u3060\u3001\u4e0a\u8a18\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u66f8\u304d\u65b9\u306b\u3088\u3063\u3066\u306f\u610f\u5916\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u304b\u306a\u308a\u5909\u308f\u3063\u3066\u304f\u308b\u53e5\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u3063\u304b\u308a\u52c9\u5f37\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"SELECT\u6587\u306f\u3001SQL\u6587\u306e\u4e2d\u3067\u3082\u6700\u3082\u57fa\u672c\u7684\u306a\u6587\u306e\u4e00\u3064\u3067\u3059\u304c\u3001\u9006\u306b\u8a00\u3048\u3070\u3001\u958b\u767a\u6642\u306b\u6700\u3082\u8907\u96d1\u306b\u306a\u308a\u3084\u3059\u3044\u6587\u3067\u3082\u3042\u308a\u307e\u3059\u3002SELECT\u6587\u306e\u8907\u96d1\u3055\u306b\u6bd4\u3079\u308c\u3070\u3001INSERT\u3001UPDATE\u3001DELETE\u7b49\u306e\u6587\u306f\u305d\u3053\u307e\u3067\u8907\u96d1\u306b\u306f\u306a\u308a [&hellip;]","protected":false},"author":1,"featured_media":4823,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[24],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/4718"}],"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=4718"}],"version-history":[{"count":14,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/4718\/revisions"}],"predecessor-version":[{"id":20595,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/4718\/revisions\/20595"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/media\/4823"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4718"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}