{"id":566,"date":"2014-12-27T22:59:10","date_gmt":"2014-12-27T13:59:10","guid":{"rendered":"http:\/\/www.dbsheetclient.jp\/blog\/?p=566"},"modified":"2018-06-27T16:21:02","modified_gmt":"2018-06-27T07:21:02","slug":"null%e3%81%ae%e3%82%bd%e3%83%bc%e3%83%88%e9%a0%86","status":"publish","type":"post","link":"https:\/\/www.dbsheetclient.jp\/blog\/?p=566","title":{"rendered":"NULL\u306e\u30bd\u30fc\u30c8\u9806"},"content":{"rendered":"

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

\"IMG_0558_2\"<\/a><\/p>\n

\u3042\u308c\uff01\u3000\u9752\u7a7a\u3060\u3051\u3002\u96f2\u4e00\u3064\u306a\u3044\u6674\u5929\u3067\u3057\u305f\u3002
\u308f\u304b\u308a\u306b\u304f\u5199\u771f\u3067\u3059\u3044\u307e\u305b\u3093(\uff3e\uff3e\uff1b)<\/span><\/p>\n

\u5148\u65e5\u3001\u5927\u5bd2\u6ce2\u3067\u5317\u6d77\u9053\u3084\u6771\u5317\u3001\u5317\u9678\u306a\u3069\u306e\u65e5\u672c\u6d77\u5074\u3067\u306f\u3001\u731b\u5439\u96ea\u3084\u76f8\u5f53\u306a\u96ea\u3082\u7a4d\u3082\u3063\u305f\u3088\u3046\u3067\u3059\u3002\u4e00\u65b9\u3001\u79c1\u306e\u4f4f\u3080\u57fc\u7389\u3067\u306f\u3001\u305d\u306e\u3053\u3068\u304c\u4fe1\u3058\u3089\u308c\u306a\u3044\u3088\u3046\u306a\u6674\u308c\u3084\u304b\u306a\u7a7a\u3067\u3057\u305f\u3002\u79c1\u3082\u65e5\u672c\u6d77\u5074\u3067\u80b2\u3063\u305f\u305f\u3081\u3001\u51ac\u306f\u3069\u3093\u3088\u308a\u3068\u3057\u305f\u7a7a\u3068\u96ea\u306e\u30a4\u30e1\u30fc\u30b8\u3092\u6301\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u3001\u95a2\u6771\u306f\u9055\u3044\u307e\u3059\u306d\u3002\u540c\u3058\u65e5\u672c\u306a\u306e\u306b\u306d\u3048\u3002\u79c1\u306f\u3001\u52ff\u8ad6\u3001\u3059\u3063\u304d\u308a\u3068\u6674\u308c\u6e21\u308b\u95a2\u6771\u306e\u6c17\u5019\u304c\u597d\u304d\u3067\u3059\uff08\u96ea\u3067\u82e6\u3057\u3080\u4eba\u305f\u3061\u306b\u306f\u7533\u3057\u8a33\u306a\u3044\u3067\u3059\u304c\uff09\u3002<\/p>\n

\u305d\u3057\u3066\u3001\u4eca\u65e5\u3082\u3068\u3066\u3082\u826f\u3044\u5929\u6c17\u3067\u3059\u3002\u4eca\u65e5\u306f\u3001\u4f1a\u793e\u306e\u7d0d\u4f1a\u306e\u65e5\u306a\u306e\u3067\u3059\u304c\u3001\u4eca\u5e74\u3082\u3044\u308d\u3044\u308d\u3042\u308a\u307e\u3057\u305f\u3002\u5fc3\u3092\u4eca\u65e5\u306e\u7a7a\u306e\u3088\u3046\u306b\u5168\u3066\u30af\u30ea\u30a2\u3057\u3066\u3001\u6765\u5e74\u306e\u51fa\u767a\u306b\u5099\u3048\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u6765\u5e74\u3082\u3088\u308d\u3057\u304f\u304a\u9858\u3044\u3057\u307e\u3059\u3002

\uff1c\u672c\u65e5\u306e\u984c\u6750\uff1e
NULL\u306e\u30bd\u30fc\u30c8\u9806<\/strong><\/p>\n

\u5148\u65e5\u3001NULL\u3092\u984c\u6750\u306b\u3057\u307e\u3057\u305f\u304c\u3001\u672c\u65e5\u3082\u3001\u3082\u3046\u5c11\u3057NULL\u306b\u3064\u3044\u3066\u53d6\u308a\u4e0a\u3052\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u00a0\u4ee5\u524d\u306b\u30d6\u30ed\u30b0\u3067\u53d6\u308a\u4e0a\u3052\u305f\u5185\u5bb9\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u3082\u3001\u30bd\u30fc\u30c8\u9806\u306b\u304a\u3044\u3066\u3001NULL\u5024\u306e\u7d50\u679c\u304cORACLE\u3068SQL Server\u3067\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u3063\u3066\u3001\u540c\u3058\u306b\u306a\u3089\u306a\u3044\u3082\u306e\u304b\u3068\u8003\u3048\u3066\u3057\u307e\u3046\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3057\u305f\u304c\u3001ORACLE\u3067\u306f\u3001\u30bd\u30fc\u30c8\u9806\u3067\u306eNULL\u5024\u306e\u4f4d\u7f6e\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306d\u3002<\/p>\n

\u524d\u56de\u306e\u793e\u54e1\u30de\u30b9\u30bf\u3092\u30b5\u30f3\u30d7\u30eb\u3067\u898b\u3066\u307f\u307e\u3059\u3002
SELECT * FROM \u793e\u54e1\u30de\u30b9\u30bf
ORDER BY \u6b69\u5408\u7d66, \u793e\u54e1\u756a\u53f7;
\"\u793e\u54e1\u30de\u30b9\u30bf_null\u30bd\u30fc\u30c8\u30c7\u30d5\u30a9\u30eb\u30c8\"<\/p>\n

<\/a>\u6b69\u5408\u7d66\u304cNULL\u306e\u65b9\u306f\u3001\u4e00\u756a\u4e0b\u306e\u307b\u3046\u306b\u51fa\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001ORACLE\u3067\u306f\u30bd\u30fc\u30c8\u306b\u304a\u3044\u3066\u306fNULL\u306f\u7121\u9650\u5927\u3068\u540c\u3058\u6271\u3044\u3068\u306a\u308b\u305f\u3081\u3067\u3059\u3002
\u9006\u306b\u3001SQL Server\u3067\u306f\u3001\u540c\u3058SQL\u3067\u3082NULL\u306f\u4e00\u756a\u4e0a\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n

SQL Server\u3067\u306e\u7d50\u679c\u306f\u4ee5\u4e0b\uff1a
\"\u793e\u54e1\u30de\u30b9\u30bf_null\u30bd\u30fc\u30c8sqlserver\"
<\/a>ORACLE\u3068\u306f\u53cd\u5bfe\u3067\u3059\u3002<\/p>\n

ORACLE\u3067\u306f\u3001ORDER BY\u53e5\u3067 NULLS FIRST\u3001NULLS LAST\uff08\u6607\u9806\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\uff09\u3068\u3044\u3046\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067NULL\u306e\u4f4d\u7f6e\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001
SELECT * FROM \u793e\u54e1\u30de\u30b9\u30bf
ORDER BY \u6b69\u5408\u7d66 NULLS FIRST, \u793e\u54e1\u756a\u53f7;
\"\u793e\u54e1\u30de\u30b9\u30bf_null\u30bd\u30fc\u30c8first\"<\/p>\n

<\/a>SQL Server\u306e\u7d50\u679c\u3068\u540c\u69d8\u306b\u3001NULL\u3092\u5148\u982d\u306b\u8868\u793a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u9006\u306b\u3001SQL Server\u306e\u5834\u5408\u306b\u306f\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306a\u8a2d\u5b9a\u304c\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u5c11\u3057\u5de5\u592b\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u3088\u304f\u3042\u308b\u4f8b\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5bfe\u8c61\u306e\u5217\u306e\u5024\u304c NULL \u306e\u5834\u5408\u306b\u306f\u300c1\u300d\u3001NULL\u3067\u306a\u3044\u5834\u5408\u306b\u306f\u300c0\u300d\u3092\u8fd4\u3057\u3066\u3001\u8fd4\u3055\u308c\u305f\u5024\u3092\u6607\u9806\u306b\u3059\u308b\u304b\u964d\u9806\u306b\u3059\u308b\u304b\u3067\u5207\u308a\u66ff\u3048\u308b\u3068\u3044\u3046\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n

SELECT *
\u00a0 FROM \u793e\u54e1\u30de\u30b9\u30bf
ORDER BY CASE WHEN \u6b69\u5408\u7d66 IS NULL THEN 1 ELSE 0 END
\u00a0 \u00a0 \u00a0 \u00a0, \u6b69\u5408\u7d66, \u793e\u54e1\u756a\u53f7;
\"\u793e\u54e1\u30de\u30b9\u30bf_null\u30bd\u30fc\u30c8sqlserver_kufu\"<\/p>\n

<\/a>NULL\u30c7\u30fc\u30bf\u3092\u4e00\u756a\u4e0b\u306b\u6301\u3063\u3066\u304f\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n

\u4eca\u65e5\u306f\u4ee5\u4e0a\u307e\u3067<\/p>\n

\u00a0<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u30b7\u30e5\u30a6\u3067\u3059\u3002 \u3042\u308c\uff01\u3000\u9752\u7a7a\u3060\u3051\u3002\u96f2\u4e00\u3064\u306a\u3044\u6674\u5929\u3067\u3057\u305f\u3002\u308f\u304b\u308a\u306b\u304f\u5199\u771f\u3067\u3059\u3044\u307e\u305b\u3093(\uff3e\uff3e\uff1b) \u5148\u65e5\u3001\u5927\u5bd2\u6ce2\u3067\u5317\u6d77\u9053\u3084\u6771\u5317\u3001\u5317\u9678\u306a\u3069\u306e\u65e5\u672c\u6d77\u5074\u3067\u306f\u3001\u731b\u5439\u96ea\u3084\u76f8\u5f53\u306a\u96ea\u3082\u7a4d\u3082\u3063\u305f\u3088\u3046\u3067\u3059\u3002\u4e00\u65b9\u3001\u79c1\u306e\u4f4f\u3080\u57fc\u7389\u3067 […]<\/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":[17],"tags":[],"class_list":["post-566","post","type-post","status-publish","format-standard","hentry","category-null"],"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\/566","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=566"}],"version-history":[{"count":5,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/566\/revisions"}],"predecessor-version":[{"id":1964,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/566\/revisions\/1964"}],"wp:attachment":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}