{"id":1990,"date":"2022-03-18T00:00:00","date_gmt":"2022-03-17T15:00:00","guid":{"rendered":"https:\/\/www.ishikawasekkei.com\/?p=1990"},"modified":"2026-04-07T13:44:30","modified_gmt":"2026-04-07T04:44:30","slug":"oracle-change-column-definition-order-in-table","status":"publish","type":"post","link":"https:\/\/www.ishikawasekkei.com\/index.php\/2022\/03\/18\/oracle-change-column-definition-order-in-table\/","title":{"rendered":"Oralce \u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u306e\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u308b"},"content":{"rendered":"\n<p>\u3000\u4eca\u65e5\u3082\u898b\u306b\u6765\u3066\u304f\u3060\u3055\u3063\u3066\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002\u77f3\u5ddd\u3055\u3093\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3000\u4eca\u65e5\u306f\u3001Oracle\u306b\u304a\u3044\u3066\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u306e\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u66f8\u3044\u3066\u304a\u304d\u307e\u3059\u3002\u6614\u3060\u3068\u3001\u30c6\u30fc\u30d6\u30eb\u518d\u4f5c\u6210\u3057\u3066\u30c7\u30fc\u30bf\u3092\u5165\u308c\u76f4\u3059\u3001\u3068\u3044\u3046\u65b9\u6cd5\u3057\u304b\u306a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u5225\u306e\u3084\u308a\u65b9\u3082\u3042\u308a\u307e\u3059\u3001\u3068\u3044\u3046\u304a\u8a71\u3067\u3059\u3002Google\u5148\u751f\u306b\u805e\u3044\u305f\u3089\u3001\u65b0\u3057\u3044\u3084\u308a\u65b9\u306b\u3064\u3044\u3066\u306f\u7c21\u5358\u306b\u51fa\u3066\u3053\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u5468\u77e5\u3057\u306a\u3051\u308c\u3070\u3001\u3068\u3044\u3046\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002\uff08\u7b11\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Invisible\u306b\u3057\u3066\u3001Visible\u306b\u3059\u308b<\/h2>\n\n\n\n<p>\u3000\u7d50\u8ad6\u3092\u5148\u306b\u77e5\u308a\u305f\u3044\u4eba\u306e\u305f\u3081\u306b\u3001\u9805\u76ee\u3092Invisible\u306b\u3057\u3066\u3001visible\u306b\u8a2d\u5b9a\u3057\u76f4\u3059\u3068\u3001\u9805\u76ee\u304c\u30c6\u30fc\u30d6\u30eb\u306e\u6700\u5f8c\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002\u3053\u306e\u7279\u6027\u3092\u4f7f\u3063\u3066\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">-- \u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002POI\u306b\u610f\u5473\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30ad\u30fc\u30dc\u30fc\u30c9\u4e0a\u306b\u4e26\u3093\u3067\u3044\u3066\u3001\u300c\u30dd\u30a4\u300d\u3068\u3044\u3046\u611f\u3058\u304c\u6c17\u306b\u5165\u3063\u3066\u3044\u3066\u30c6\u30b9\u30c8\u306e\u3068\u304d\u306b\u3088\u304f\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002\nSQL> create table poi (\n  2    a number,\n  3    b number,\n  4    e number,\n  5    d number\n  6  );\n\n\u8868\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002\n\n-- \u300cC\u300d\u5217\u3092\u8ffd\u52a0\u3057\u5fd8\u308c\u307e\u3057\u305f\u3002\u3088\u304f\u898b\u308b\u3068\u300cE\u300d\u300cD\u300d\u306e\u5217\u306e\u9806\u756a\u3082\u9593\u9055\u3063\u3066\u3044\u307e\u3057\u305f\u3002\nSQL> desc poi\n \u540d\u524d                                      NULL?    \u578b\n ----------------------------------------- -------- ----------------------------\n A                                                  NUMBER\n B                                                  NUMBER\n E                                                  NUMBER\n D                                                  NUMBER\n\n-- \u300cC\u300d\u5217\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\nSQL> alter table poi add (c number);\n\n\u8868\u304c\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002\n\n-- \u78ba\u8a8d\u3059\u308b\u3068\u3001\u6700\u5f8c\u306b\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002\nSQL> desc poi\n \u540d\u524d                                      NULL?    \u578b\n ----------------------------------------- -------- ----------------------------\n A                                                  NUMBER\n B                                                  NUMBER\n E                                                  NUMBER\n D                                                  NUMBER\n C                                                  NUMBER\n\n-- \u300cE\u300d\u300cD\u300d\u5217\u3092\u300cinvisible\u300d\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002\nSQL> alter table poi modify ( e invisible, d invisible );\n\n\u8868\u304c\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002\n\n-- \u78ba\u8a8d\u3059\u308b\u3068\u3001\u78ba\u304b\u306b\u300cE\u300d\u300cD\u300d\u5217\u304c\u898b\u3048\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u3053\u306e\u72b6\u614b\u3067INSERT INTO POI VALUES ( 1, 2, 3 );\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u898b\u3048\u306a\u3044\u5217\u306fNULL\u306b\u306a\u308a\u307e\u3057\u305f\u3002\nSQL> desc poi\n \u540d\u524d                                      NULL?    \u578b\n ----------------------------------------- -------- ----------------------------\n A                                                  NUMBER\n B                                                  NUMBER\n C                                                  NUMBER\n\n-- \u9806\u756a\u304c\u5927\u4e8b\u3067\u3059\u306e\u3067\u3001\u307e\u305a\u306f\u300cD\u300d\u5217\u3092\u898b\u3048\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\nSQL> alter table poi modify ( d visible );\n\n\u8868\u304c\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002\n\n-- \u305d\u3057\u3066\u3001\u6b21\u306b\u300cE\u300d\u5217\u3092\u898b\u3048\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\nSQL> alter table poi modify ( e visible );\n\n\u8868\u304c\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002\n\n-- \u78ba\u8a8d\u3059\u308b\u3068\u3001\u9806\u756a\u304c\u6b63\u3057\u304f\u5165\u308c\u66ff\u308f\u308a\u307e\u3057\u305f\u3002\nSQL> desc poi\n \u540d\u524d                                      NULL?    \u578b\n ----------------------------------------- -------- ----------------------------\n A                                                  NUMBER\n B                                                  NUMBER\n C                                                  NUMBER\n D                                                  NUMBER\n E                                                  NUMBER\n\nSQL> insert into poi values ( 1, 2, 3, 4, 5 );\n\n1\u884c\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002\n\n-- INSERT\u6587\u3092\u5b9f\u884c\u3059\u308b\u3068\u304d\u306b\u9805\u76ee\u3092\u7701\u7565\u3057\u3066\u307f\u307e\u3057\u305f\u304c\u3001\u5165\u308c\u66ff\u308f\u3063\u305f\u9806\u756a\u3069\u304a\u308a\u5024\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u307e\u3057\u305f\uff01\nSQL> select * from poi;\n\n         A          B          C          D          E\n---------- ---------- ---------- ---------- ----------\n         1          2          3          4          5\n\n\u7d4c\u904e: 00:00:00.01\nSQL><\/pre>\n\n\n\n<p>\u3000\u30c6\u30fc\u30d6\u30eb\u306e\u9805\u76ee\u3092Invisible\u306b\u8a2d\u5b9a\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u304c\u3001Oracle 12c\u304b\u3089\u767b\u5834\u3057\u305f\u3088\u3046\u3067\u3059\u3002\u3053\u308c\u3092\u5b9f\u884c\u3059\u308b\u3068\u6587\u5b57\u901a\u308a\u898b\u3048\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8ffd\u8a18\uff1a\u958b\u767a\u4e2d\u306e\u30c6\u30fc\u30d6\u30eb\u3067\u5b9f\u969b\u306b\u9805\u76ee\u8ffd\u52a0\u304c\u5fc5\u8981\u306b\u306a\u3063\u3066\u3084\u3063\u3066\u307f\u307e\u3057\u305f\u304c\u3001VISIBLE\u306b\u8a2d\u5b9a\u3059\u308b\u306e\u306f\u624b\u629c\u304d\u3057\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4e00\u6c17\u306b\u3084\u3063\u3066\u3082\u9806\u756a\u901a\u308a\u306b\u623b\u308a\u307e\u3057\u305f\u3002<br>\u518d\u8ffd\u8a18\uff1a\u3082\u3063\u3068\u624b\u629c\u304d\u3057\u306610\u500b\u306e\u9805\u76ee\u3092\u540c\u6642\u306b\u3084\u3063\u305f\u3068\u3053\u308d\u3001\u601d\u3063\u305f\u901a\u308a\u306b\u306f\u306a\u3089\u304b\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u5076\u7136\u3060\u3063\u305f\u3001\u3068\u3044\u3046\u611f\u3058\u3067\u3059\u306d\u3002\u3072\u3068\u3064\u305a\u3064\u5b9f\u884c\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"oracledb\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">alter table poi modify ( e visible, d visible );<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u3000Oracle\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u5b9a\u7fa9\u306e\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u308b\u306e\u306b\u3001\u304b\u3064\u3066\u306f\u518d\u4f5c\u6210\u3068\u30c7\u30fc\u30bf\u6295\u5165\u304c\u5fc5\u8981\u3067\u3057\u305f\u304c\u3001ALTER TABLE\u6587\u3060\u3051\u3067\u9805\u76ee\u304c\u5165\u308c\u66ff\u3048\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3057\u305f\uff01\u6a29\u9650\u3084\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3001\u30c7\u30fc\u30bf\u6295\u5165\u306a\u3069\u3001\u5fc5\u8981\u306a\u624b\u9593\u3092\u8003\u3048\u308b\u3068\u5727\u5012\u7684\u306b\u3053\u3061\u3089\u306e\u307b\u3046\u304c\u826f\u3044\u6c17\u304c\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000\u4eca\u65e5\u3082\u898b\u306b\u6765\u3066\u304f\u3060\u3055\u3063\u3066\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002\u77f3\u5ddd\u3055\u3093\u3067\u3059\u3002 \u3000\u4eca\u65e5\u306f\u3001Oracle\u306b\u304a\u3044\u3066\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u306e\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u66f8\u3044\u3066\u304a\u304d\u307e\u3059\u3002\u6614\u3060\u3068\u3001\u30c6\u30fc\u30d6\u30eb\u518d\u4f5c\u6210\u3057\u3066\u30c7\u30fc\u30bf\u3092\u5165\u308c\u76f4\u3059\u3001\u3068\u3044\u3046\u65b9\u6cd5\u3057\u304b\u306a\u304b &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.ishikawasekkei.com\/index.php\/2022\/03\/18\/oracle-change-column-definition-order-in-table\/\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;Oralce \u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u306e\u9806\u756a\u3092\u5165\u308c\u66ff\u3048\u308b&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,2],"tags":[],"class_list":["post-1990","post","type-post","status-publish","format-standard","hentry","category-program","category-blog"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts\/1990","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/comments?post=1990"}],"version-history":[{"count":5,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts\/1990\/revisions"}],"predecessor-version":[{"id":2242,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/posts\/1990\/revisions\/2242"}],"wp:attachment":[{"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/media?parent=1990"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/categories?post=1990"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ishikawasekkei.com\/index.php\/wp-json\/wp\/v2\/tags?post=1990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}