{"id":172,"date":"2014-06-27T12:48:53","date_gmt":"2014-06-27T03:48:53","guid":{"rendered":"http:\/\/www.dbsheetclient.jp\/blog\/?p=172"},"modified":"2018-06-27T16:48:49","modified_gmt":"2018-06-27T07:48:49","slug":"select%e3%81%aetop-n%e5%88%86%e6%9e%90%ef%bc%88oracle%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.dbsheetclient.jp\/blog\/?p=172","title":{"rendered":"SELECT\u306eTOP N\u5206\u6790\uff08Oracle\uff09"},"content":{"rendered":"

IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u30b7\u30e5\u30a6\u3067\u3059\u3002<\/p>\n

\"\u516c\u5712_4\"<\/a><\/p>\n

\u30b5\u30c3\u30ab\u30fc\u30ef\u30fc\u30eb\u30c9\u30ab\u30c3\u30d7\u306f\u3001\u65e5\u672c\u306f\u5341\u5206\u529b\u3092\u51fa\u3057\u5207\u308c\u305a\u3001\u4e00\u6b21\u4e88\u9078\u6557\u9000\u3002\u672c\u5f53\u306b\u6b8b\u5ff5\u3067\u3057\u305f\u3002\u6700\u5f8c\u306e\u30b3\u30ed\u30f3\u30d3\u30a2\u6226\u306f\u7d50\u69cb\u9811\u5f35\u3063\u3066\u3044\u305f\u3057\u3001\u524d\u534a\u6700\u5f8c\u306b\u8ffd\u3044\u3064\u3044\u3066\u3001\u3053\u308c\u306f\u3084\u3063\u3066\u304f\u308c\u308b\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u898b\u4e8b\u306b\u6c7a\u3081\u3089\u308c\u3001\u7d42\u308f\u3063\u3066\u307f\u308c\u3070\u5b8c\u6557\u3067\u3057\u305f\u3002\u30a2\u30b8\u30a2\u306e\u30c1\u30fc\u30e0\u306f\u3069\u3053\u30821\u52dd\u3082\u3067\u304d\u305a\u3001\u4e16\u754c\u306e\u58c1\u306f\u3084\u306f\u308a\u539a\u3044\u3067\u3059\u3002<\/p>\n

\u307e\u305f\u3001\u5fd9\u3057\u304b\u3063\u305f\u304a\u5ba2\u69d8\u306e\u958b\u767a\u6848\u4ef6\u3082\u3001\u3044\u3088\u3044\u3088\u904b\u7528\u958b\u59cb\u304c\u8fd1\u304f\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u307e\u3060\u6c17\u304c\u629c\u3051\u307e\u305b\u3093\u3002<\/p>\n

\uff1c\u672c\u65e5\u306e\u984c\u6750\uff1e
<\/strong>SELECT\u306eTOP N\u5206\u6790\u306b\u3064\u3044\u3066<\/p>\n

\u524d\u56de\u3001Microsoft SQL Server\u306eSELECT\u3067\u306eTOP\u53e5\u306b\u3064\u3044\u3066\u898b\u307e\u3057\u305f\u304c\u3001\u4eca\u56de\u306f\u3053\u308c\u3068\u540c\u69d8\u306e\u3053\u3068\u3092Oracle\u3067\u884c\u3046\u5834\u5408\u306b\u3064\u3044\u3066\u8003\u3048\u3066\u307f\u307e\u3059\u3002Oracle\u306e\u5834\u5408\u306b\u306f\u3001ROW_NUMBER\u95a2\u6570\u3092\u4f7f\u3046\u3068\u540c\u69d8\u306a\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

\u4f8b\uff09\u4eca\u65e5\u306e\u53d7\u6ce8\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u53d7\u6ce8\u756a\u53f7\u9806\u306b\u5148\u982d5\u4ef6\u3092\u62bd\u51fa\u3059\u308b\u3002 SELECT * FROM
(SELECT ROW_NUMBER() OVER(ORDER BY \u53d7\u6ce8NO) JNO, \u53d7\u6ce8NO, \u53d7\u6ce8\u65e5, \u9867\u5ba2\u756a\u53f7, \u6c7a\u6e08\u91d1\u984d FROM \u53d7\u6ce8\u30c6\u30fc\u30d6\u30eb)
WHERE JNO <=5 ORDER BY JNO;<\/p>\n

\"Oracle_row_number1\"<\/a><\/p>\n

\u307e\u305f\u3001ROW_NUMBER\u95a2\u6570\u3092\u4f7f\u7528\u305b\u305a\u306b\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u30d3\u30e5\u30fc\u3092\u4f7f\u7528\u3057\u305f\u554f\u3044\u5408\u308f\u305b\u3067\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

SELECT * FROM (
SELECT * FROM \u53d7\u6ce8\u30c6\u30fc\u30d6\u30eb
ORDER BY \u53d7\u6ce8NO
)
WHERE ROWNUM <= 5
ORDER BY \u53d7\u6ce8NO;<\/p>\n

\"Oracle_\u30a4\u30f3\u30e9\u30a4\u30f3\u30d3\u30e5\u30fc1\"<\/a><\/p>\n

\u9867\u5ba2\u756a\u53f7\u9806\u306b\u4e26\u3079\u305f\u6700\u521d\u306e5\u4ef6\u3068\u3044\u3046\u3053\u3068\u306b\u3057\u305f\u3044\u5834\u5408\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

SELECT * FROM (
SELECT * FROM \u53d7\u6ce8\u30c6\u30fc\u30d6\u30eb
ORDER BY \u9867\u5ba2\u756a\u53f7
)
WHERE ROWNUM <= 5
ORDER BY \u9867\u5ba2\u756a\u53f7;<\/p>\n

\"Oracle_\u30a4\u30f3\u30e9\u30a4\u30f3\u30d3\u30e5\u30fc2\"<\/a><\/p>\n

Oracle\u306b\u306fTOP\u53e5\u306f\u306a\u3044\u3067\u3059\u304c\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067\u540c\u69d8\u306e\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306d\u3002
\u203b\u3061\u306a\u307f\u306b\u3001SQL Server\u3067\u3082ROW_NUMBER\u95a2\u6570\u306f\u4f7f\u3048\u307e\u3059\u3002<\/p>\n

\u4eca\u65e5\u306f\u4ee5\u4e0a\u307e\u3067<\/p>\n","protected":false},"excerpt":{"rendered":"

IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u30b7\u30e5\u30a6\u3067\u3059\u3002 \u30b5\u30c3\u30ab\u30fc\u30ef\u30fc\u30eb\u30c9\u30ab\u30c3\u30d7\u306f\u3001\u65e5\u672c\u306f\u5341\u5206\u529b\u3092\u51fa\u3057\u5207\u308c\u305a\u3001\u4e00\u6b21\u4e88\u9078\u6557\u9000\u3002\u672c\u5f53\u306b\u6b8b\u5ff5\u3067\u3057\u305f\u3002\u6700\u5f8c\u306e\u30b3\u30ed\u30f3\u30d3\u30a2\u6226\u306f\u7d50\u69cb\u9811\u5f35\u3063\u3066\u3044\u305f\u3057\u3001\u524d\u534a\u6700\u5f8c\u306b\u8ffd\u3044\u3064\u3044\u3066\u3001\u3053\u308c\u306f\u3084\u3063\u3066\u304f\u308c\u308b\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u305f\u306e […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[21,9],"tags":[],"class_list":["post-172","post","type-post","status-publish","format-standard","hentry","category-select","category-9"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=172"}],"version-history":[{"count":8,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/172\/revisions"}],"predecessor-version":[{"id":1987,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/172\/revisions\/1987"}],"wp:attachment":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}