{"id":5612,"date":"2025-10-02T16:01:19","date_gmt":"2025-10-02T07:01:19","guid":{"rendered":"https:\/\/www.bold.ne.jp\/engineer-club\/?p=5612"},"modified":"2025-07-02T17:55:10","modified_gmt":"2025-07-02T08:55:10","slug":"sql-create-table","status":"publish","type":"post","link":"https:\/\/www.bold.ne.jp\/engineer-club\/sql-create-table","title":{"rendered":"\u3010SQL\u3011CREATE TABLE\u6587\u3067\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u521d\u5fc3\u8005\u5411\u3051\u306b\u89e3\u8aac"},"content":{"rendered":"<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u65b0\u3057\u3044\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306f\u300c<span>CREATE TABLE<\/span>\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002<br \/>\n\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u308b\u69cb\u6587\u81ea\u4f53\u306f\u305d\u308c\u307b\u3069\u96e3\u3057\u3044\u308f\u3051\u3067\u306f\u306a\u3044\u3067\u3059\u304c\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u904b\u7528\u3067\u4f7f\u3046\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u308b\u5834\u5408\u306f\u7d50\u69cb\u91cd\u8981\u306a\u3053\u3068\u3092\u305f\u304f\u3055\u3093\u6c7a\u3081\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3068\u3066\u3082\u5965\u304c\u6df1\u3044\u3067\u3059\u3002<br \/>\n\u4eca\u56de\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u308a\u65b9\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u30b7\u30f3\u30d7\u30eb\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u969b\u3082\u3001\u4e8b\u524d\u306b\u691c\u8a0e\u3057\u3066\u304a\u304f\u3079\u304d\u9805\u76ee\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u306e\u3067\u9806\u756a\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#CREATE_TABLE\">\uff11\uff0eCREATE TABLE \u3068\u306f<\/a><ul><li><a href=\"#-CREATE_TABLE\">\uff11-\uff11\uff0eCREATE TABLE \u306e\u57fa\u672c\u69cb\u6587<\/a><\/li><li><a href=\"#-CREATE_TABLE-2\">\uff11-\uff12\uff0eCREATE TABLE\u6587\u8a18\u8ff0\u306b\u5fc5\u8981\u306a\u60c5\u5831<\/a><\/li><li><a href=\"#-CREATE_TABLE-3\">\uff11-\uff13\uff0eCREATE TABLE\u6587\u8a18\u8ff0\u306e\u6ce8\u610f\u70b9<\/a><\/li><\/ul><\/li><li><a href=\"#CREATE_TABLE-2\">\uff12\uff0eCREATE TABLE\u6587\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/a><ul><li><a href=\"#i\">\uff12-\uff11\uff0e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff11\u3000\u2015\u57fa\u672c\u7684\u306a\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u2015<\/a><\/li><li><a href=\"#i-2\">\uff12-\uff12\uff0e \u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff12\u3000\u2015\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3059\u308b\u2015<\/a><\/li><\/ul><\/li><li><a href=\"#3\">3 \uff0e\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066<\/a><\/li><li><a href=\"#i-3\">\uff14\uff0e\u307e\u3068\u3081<\/a><\/li><\/ul><\/div>\n<h2><span id=\"CREATE_TABLE\">\uff11\uff0eCREATE TABLE \u3068\u306f<\/span><\/h2>\n<p>CREATE TABLE\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4e0a\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<br \/>\n\u3053\u3053\u3067\u306f\u57fa\u672c\u7684\u306a\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u6210\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<br \/>\n\u524d\u8ff0\u3057\u305f\u3088\u3046\u306b\u3001\u30c6\u30fc\u30d6\u30eb\u540d\u3001\u30ab\u30e9\u30e0\u540d\u3084\u30c7\u30fc\u30bf\u578b\u306a\u3069\u6700\u4f4e\u9650\u6c7a\u3081\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u9805\u76ee\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u306e\u3067\u9806\u3092\u8ffd\u3063\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3><span id=\"-CREATE_TABLE\">\uff11-\uff11\uff0eCREATE TABLE \u306e\u57fa\u672c\u69cb\u6587<\/span><\/h3>\n<p>CREATE TABLE \u306f\u30c6\u30fc\u30d6\u30eb\u306e\u65b0\u898f\u4f5c\u6210\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<br \/>\n\u57fa\u672c\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<div class=\"attention a-2\">\n<p><strong>CREATE TABLE<\/strong><strong>\u306e\u69cb\u6587<\/p>\n<p><\/strong><\/p>\n<p>CREATE TABLE \u00a0\u30c6\u30fc\u30d6\u30eb\u540d <span>(<br \/>\n<\/span>\u30ab\u30e9\u30e0\u540d<span>1 <\/span>\u30c7\u30fc\u30bf\u578b \u30aa\u30d7\u30b7\u30e7\u30f3<br \/>\n\u30ab\u30e9\u30e0\u540d\uff12 \u30c7\u30fc\u30bf\u578b \u30aa\u30d7\u30b7\u30e7\u30f3<br \/>\n\u30ab\u30e9\u30e0\u540d\uff13 \u30c7\u30fc\u30bf\u578b \u30aa\u30d7\u30b7\u30e7\u30f3<br \/>\n);<\/p>\n<\/div>\n<p><span style=\"color: #646464; font-size: 15px;\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u8a73\u7d30\u306f\u8a18\u8ff0\u3057\u307e\u305b\u3093\u304c\u3001\u65e2\u5b58\u306e\u30c6\u30fc\u30d6\u30eb\u60c5\u5831\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<br \/>\n<\/span>\u305d\u306e\u5834\u5408\u306f\u300cALTER TABLE\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<h3><span id=\"-CREATE_TABLE-2\">\uff11-\uff12\uff0eCREATE TABLE\u6587\u8a18\u8ff0\u306b\u5fc5\u8981\u306a\u60c5\u5831<\/span><\/h3>\n<p>\u57fa\u672c\u69cb\u6587\u3092\u898b\u3066\u3044\u305f\u3060\u304f\u3068\u5206\u304b\u308a\u307e\u3059\u304c\u3001\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3059\u308b\u306b\u3042\u305f\u308a\u3001\u6c7a\u3081\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3053\u3068\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002\u6700\u4f4e\u3067\u3082\u4ee5\u4e0b\u306e\uff13\u3064\u306f\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><a href=\"https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2025\/07\/\u3055\u3042.png\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2025\/07\/\u3055\u3042.png\" alt=\"CREATE TABLE\" width=\"800\" height=\"400\" class=\"alignnone size-full wp-image-5615\" srcset=\"https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2025\/07\/\u3055\u3042.png 800w, https:\/\/www.bold.ne.jp\/engineer-club\/wp-content\/uploads\/2025\/07\/\u3055\u3042-768x384.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>\n\u2460\u30c6\u30fc\u30d6\u30eb\u540d<br \/>\n\u3000\u30c6\u30fc\u30d6\u30eb\u306e\u540d\u524d\u3092\u6c7a\u3081\u307e\u3059\u3002<br \/>\n\u3000\u30c6\u30fc\u30d6\u30eb\u540d\u306fDB\u306e\u4e2d\u3067\u30e6\u30cb\u30fc\u30af\uff08\u4e00\u610f\uff09\u306b\u306a\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<br \/>\n\u3000<br \/>\n\u2461\u30ab\u30e9\u30e0\u540d<br \/>\n\u3000\u30ab\u30e9\u30e0\u306e\u540d\u79f0\u306e\u307f\u3067\u306f\u306a\u304f\u3001\u3069\u3093\u306a\u30ab\u30e9\u30e0\u304c\u5fc5\u8981\u306b\u306a\u308b\u304b\u3082\u6c7a\u3081\u3066\u304a\u304d\u307e\u3059\u3002<br \/>\n\u3000\u4f8b\u3048\u3070\u4f4f\u6240\u3092\u767b\u9332\u3059\u308b\u306a\u3089\u3001\u90fd\u9053\u5e9c\u770c\u540d\u3068\u305d\u306e\u7d9a\u304d\u3092\u3059\u3079\u3066\uff11\u30ab\u30e9\u30e0\u306b\u683c\u7d0d\u3059\u308b\u304b\u3001\u30ab\u30e9\u30e0\u3092\u5206\u3051\u308b\u304b\u306a\u3069\u3082\u691c\u8a0e\u4e8b\u9805\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u2462\u30c7\u30fc\u30bf\u578b<br \/>\n\u3000\u30c6\u30fc\u30d6\u30eb\u306e\u30c7\u30fc\u30bf\u306b\u306f\u30c7\u30fc\u30bf\u578b\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\n\u3000\u6587\u5b57\u5217\u3001\u6570\u5024\u3001\u65e5\u4ed8\u306a\u3069\u306e\u7a2e\u5225\u306b\u5f93\u3044\u30c7\u30fc\u30bf\u578b\u3092\u6c7a\u3081\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u578b\u306f\u975e\u5e38\u306b\u305f\u304f\u3055\u3093\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u4f55\u6587\u5b57\u7a0b\u5ea6\u306e\u30c7\u30fc\u30bf\u304c\u5165\u308b\u304b\u3001\u6570\u5024\u306a\u3089\u5c11\u6570\u306f\u6271\u3046\u306e\u304b\u3001\u3000\u65e5\u4ed8\u306b\u306f\u6642\u9593\u307e\u3067\u683c\u7d0d\u3059\u308b\u306e\u304b\u306a\u3069\u767b\u9332\u3057\u305f\u3044\u30c7\u30fc\u30bf\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u306a\u304c\u3089\u3001\u305d\u308c\u305e\u308c\u306e\u30ab\u30e9\u30e0\u306b\u3064\u3044\u3066\u30c7\u30fc\u30bf\u578b\u3092\u6c7a\u3081\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306b\u306f\u3055\u3089\u306b\u69d8\u3005\u306a\u3053\u3068\u3092\u6c7a\u3081\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u304c\u3001\u4eca\u56de\u306f\u57fa\u672c\u306e\uff13\u3064\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n<h3><span id=\"-CREATE_TABLE-3\">\uff11-\uff13\uff0eCREATE TABLE\u6587\u8a18\u8ff0\u306e\u6ce8\u610f\u70b9<\/span><\/h3>\n<p>&nbsp;<\/p>\n<p>\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u306b\u3042\u305f\u308a\u3001\u3044\u304f\u3064\u304b\u6ce8\u610f\u3057\u305f\u307b\u3046\u304c\u826f\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><span class=\"f-marker-y\">\u30c6\u30fc\u30d6\u30eb\u540d\u3084\u30ab\u30e9\u30e0\u540d\u306b\u65e5\u672c\u8a9e\u306f\u4f7f\u308f\u306a\u3044<\/span><\/p>\n<p>\u30c6\u30fc\u30d6\u30eb\u540d\u3084\u5217\u540d\u306b\u306f\u65e5\u672c\u8a9e\u306f\u4f7f\u308f\u305a\u3001\u534a\u89d2\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u30fb\u6570\u5b57\u30fb\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\uff08_\uff09\u306e\u307f\u306b\u3057\u3066\u304a\u3044\u305f\u65b9\u304c\u826f\u3044\u3067\u3059\u3002<br \/>\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u306f\u65e5\u672c\u8a9e\u306e\u30c6\u30fc\u30d6\u30eb\u540d\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u81ea\u4f53\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u9023\u643a\u7b49\u3067\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u65e5\u672c\u8a9e\u306e\u30ab\u30e9\u30e0\u540d\u306f\u907f\u3051\u305f\u307b\u3046\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p><span class=\"f-marker-y\">\u30c7\u30fc\u30bf\u578b\u306f\u6700\u521d\u306b\u304d\u3061\u3093\u3068\u691c\u8a0e\u3059\u308b<\/span><\/p>\n<p>\u307e\u305f\u3001\u8a2d\u5b9a\u3057\u305f\u30c7\u30fc\u30bf\u578b\u3092\u5f8c\u304b\u3089\u5909\u66f4\u3059\u308b\u3053\u3068\u306f\u53ef\u80fd\u3067\u3059\u304c\u3001\u767b\u9332\u6e08\u307f\u306e\u30c7\u30fc\u30bf\u306b\u3082\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u306e\u3067\u6700\u521d\u306b\u3057\u3063\u304b\u308a\u691c\u8a0e\u3057\u3066\u304a\u3044\u305f\u307b\u3046\u304c\u7121\u96e3\u3067\u3059\u3002<\/p>\n<h2><span id=\"CREATE_TABLE-2\">\uff12\uff0eCREATE TABLE\u6587\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/span><\/h2>\n<p>\u305d\u308c\u3067\u306f\u5b9f\u969b\u306e\u66f8\u304d\u65b9\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3><span id=\"i\">\uff12-\uff11\uff0e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff11\u3000\u2015\u57fa\u672c\u7684\u306a\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u2015<\/span><\/h3>\n<p>\u4eca\u56de\u306f\u6b21\u306e\u3088\u3046\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u308a\u307e\u3059\u3002<br \/>\n\u6587\u5b57\u5217\u578b\u3001\u6570\u5024\u578b\u3001\u65e5\u4ed8\u578b\u3068\uff13\u7a2e\u985e\u306e\u30ab\u30e9\u30e0\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u3053\u3067\u306f\u7279\u306b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u30c6\u30fc\u30d6\u30eb\u540d\uff1aFruits<\/p>\n<table style=\"border-collapse: collapse; width: 79.2327%; height: 198px;\">\n<tbody>\n<tr style=\"height: 24px;\">\n<td style=\"width: 14.0097%; height: 24px;\">\u5217\u540d<\/td>\n<td style=\"width: 95.857%; height: 24px;\">\u683c\u7d0d\u3059\u308b\u30c7\u30fc\u30bf<\/td>\n<\/tr>\n<tr style=\"height: 58px;\">\n<td width=\"145\" style=\"width: 14.0097%; height: 58px;\">\n<p>Fruits<\/p>\n<\/td>\n<td width=\"236\" style=\"width: 95.857%;\">\n<p>\u30d5\u30eb\u30fc\u30c4\u306e\u540d\u524d\uff08\u6587\u5b57\u5217\u578b\uff09<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 58px;\">\n<td width=\"145\" style=\"width: 14.0097%; height: 58px;\">\n<p>Favorite_Rank<\/p>\n<\/td>\n<td width=\"236\" style=\"width: 95.857%;\">\n<p>\u9806\u4f4d\uff08\u6574\u6570\uff09<\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 58px;\">\n<td width=\"145\" style=\"width: 14.0097%; height: 58px;\">\n<p>Input_date<\/p>\n<\/td>\n<td width=\"236\" style=\"width: 95.857%;\">\n<p>\u5165\u529b\u65e5\uff08\u65e5\u4ed8\uff09<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre class=\"prettyprint lang:default decode:true\">CREATE TABLE Fruits(\r\n    Fruits Varchar(100),\r\n    Favorite_Rank int,\r\n    Input_date date\r\n);\r\n\r\n<\/pre>\n<p>\u30b7\u30f3\u30d7\u30eb\u306a\u30c6\u30fc\u30d6\u30eb\u304c\u4f5c\u6210\u3067\u304d\u307e\u3057\u305f\u3002<br \/>\nVarchar(100) \u306f Varchar\u3068\u3044\u3046\u6587\u5b57\u5217\u578b\u3092\u6307\u5b9a\u3001\uff08\uff09\u5185\u306f\u30d0\u30a4\u30c8\u6570\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u305f\u306e\u3067\u30c7\u30fc\u30bf\u3092\u5165\u308c\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">INSERT INTO Fruits (Fruits, Favorite_Rank, Input_date) VALUES\r\n('\u308a\u3093\u3054', 1, '2025-04-13'),\r\n('\u30d0\u30ca\u30ca', 2, '2025-04-12'),\r\n('\u307f\u304b\u3093', 3, '2025-04-11');\r\n<\/pre>\n<p>&nbsp;<\/p>\n<p>SELECT\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<br \/>\n\u30c6\u30fc\u30d6\u30ebFruits\u304c\u4f5c\u6210\u3055\u308c\u3001\u30c7\u30fc\u30bf\u304c\u30a4\u30f3\u30b5\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\n\u3010SELECT\u7d50\u679c\u3011<br \/>\n==========================================================<br \/>\nmysql&gt; SELECT * FROM Fruits;<br \/>\n+&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;&#8212;+<br \/>\n| Fruits | Favorite_Rank | Input_date |<br \/>\n+&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;&#8212;+<br \/>\n| \u308a\u3093\u3054 | 1 | 2025-04-13 |<br \/>\n| \u30d0\u30ca\u30ca | 2 | 2025-04-12 |<br \/>\n| \u307f\u304b\u3093 | 3 | 2025-04-11 |<br \/>\n+&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;&#8212;+<br \/>\n3 rows in set (0.00 sec)<br \/>\n==========================================================<\/p>\n<h3><span id=\"i-2\">\uff12-\uff12\uff0e \u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff12\u3000\u2015\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3059\u308b\u2015<\/span><\/h3>\n<p>\u524d\u9805\u3067\u306f\u57fa\u672c\u7684\u306a\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u3092\u3057\u307e\u3057\u305f\u3002 \u5b9f\u969b\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u308b\u969b\u306f\u30b7\u30b9\u30c6\u30e0\u306b\u5fdc\u3058\u3066\u8272\u3005\u3068\u8003\u616e\u3059\u3079\u304d\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001ID\u306a\u3069\u767b\u9332\u5fc5\u9808\u306e\u30ab\u30e9\u30e0\u306b\u306f\u300cPRIMARY KEY\u300d\u8a2d\u5b9a\u3092\u3059\u308b\u3001\u300cNOT NULL\u300d\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4ed8\u3051\u308b\u306a\u3069\u306e\u65b9\u6cd5\u3067NULL\u5024\u3092\u767b\u9332\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<br \/>\n\u3000\u203bNULL \u3068\u306f\u4f55\u3082\u767b\u9332\u3055\u308c\u3066\u3044\u306a\u3044\u72b6\u614b\u306e\u3053\u3068<\/p>\n<p>\u4ed6\u306b\u3082\u3001PRIMARY KEY (\u4e3b\u30ad\u30fc)\u306e\u8a2d\u5b9a\u3084\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\uff08\u5024\u304c\u4f55\u3082\u8a2d\u5b9a\u3055\u308c\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u5165\u529b\u3059\u308b\u5024\uff09\u306e\u8a2d\u5b9a\u306a\u3069\u7528\u9014\u306b\u5fdc\u3058\u3066\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306eSQL\u3067\u306f\u5e7e\u3064\u304b\u6761\u4ef6\u3092\u8a2d\u3051\u3066Fruits2\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\u30bd\u30fc\u30b9\u5185\u306e\u30b3\u30e1\u30f3\u30c8\u306e\u901a\u308a\u3067\u3059\u304c\u6b21\u306e\u3088\u3046\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u8a2d\u5b9a\u3092\u3057\u307e\u3057\u305f\u3002<\/p>\n<p><strong>Fruit_ID\uff1a<br \/>\n<\/strong><strong>\u3000\u4e3b\u30ad\u30fc\uff08\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u30ad\u30fc\uff09\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u30ad\u30fc\u306f\u91cd\u8907\u3068NULL\u304c\u8a31\u53ef\u3055\u308c\u307e\u305b\u3093\u3002<\/strong> <strong>\u3000Fruits\uff1a<br \/>\n<\/strong><strong>\u3000NOT NULL \u5236\u7d04\u3092\u8a2d\u3051\u305f\u305f\u3081\u5165\u529b\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\n<\/strong><strong>\u00a0Favorite_Rank\uff1a<br \/>\n<\/strong> <strong>\u3000\u4f55\u3082\u8a2d\u5b9a\u3057\u307e\u305b\u3093\u3002<br \/>\n<\/strong><strong>\u00a0Input_date\uff1a<br \/>\n<\/strong><strong>\u3000NOT NULL \u5236\u7d04\u306a\u306e\u3067\u5165\u529b\u5fc5\u9808\u3067\u3059\u3002<\/strong><\/p>\n<pre class=\"prettyprint lang:default decode:true\">CREATE TABLE Fruits2 (\r\n    Fruit_ID INT PRIMARY KEY,         -- \u4e3b\u30ad\u30fc\uff08\u91cd\u8907\u4e0d\u53ef\u30fbNULL\u4e0d\u53ef\uff09\r\n    Fruits VARCHAR(100) NOT NULL,     -- \u30d5\u30eb\u30fc\u30c4\u306e\u540d\u524d\uff08\u5fc5\u9808\uff09\r\n    Favorite_Rank INT,                -- \u9806\u4f4d\uff08\u4efb\u610f\uff09\r\n    Input_date DATE NOT NULL          -- \u5165\u529b\u65e5\uff08\u5fc5\u9808\uff09\r\n);<\/pre>\n<p>\u30c6\u30fc\u30d6\u30eb\u304c\u4f5c\u6210\u3067\u304d\u307e\u3057\u305f\u3002\u3053\u3061\u3089\u306b\u3082\u6b21\u306eINSERT\u6587\u3067\u30c7\u30fc\u30bf\u3092\u5165\u308c\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">INSERT INTO Fruits2 (Fruit_ID, Fruits, Favorite_Rank, Input_date) VALUES\r\n(1, '\u3044\u3061\u3054', 1, '2025-04-13'),\r\n(2, '\u308a\u3093\u3054', 3, '2025-04-13'),\r\n(3, '\u30d0\u30ca\u30ca', 5, '2025-04-13'),\r\n(4, '\u307f\u304b\u3093', 2, '2025-04-13'),\r\n(5, '\u3076\u3069\u3046', 4, '2025-04-13');<\/pre>\n<p>&nbsp;<\/p>\n<p>\u3010SELECT\u7d50\u679c\u3011<\/p>\n<p>==========================================================<br \/>\nmysql&gt; SELECT * FROM Fruits2;<br \/>\n+&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;&#8212;+<br \/>\n| Fruit_ID | Fruits | Favorite_Rank | Input_date |<br \/>\n+&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;&#8212;+<br \/>\n| 1 | \u3044\u3061\u3054 | 1 | 2025-04-13 |<br \/>\n| 2 | \u308a\u3093\u3054 | 3 | 2025-04-13 |<br \/>\n| 3 | \u30d0\u30ca\u30ca | 5 | 2025-04-13 |<br \/>\n| 4 | \u307f\u304b\u3093 | 2 | 2025-04-13 |<br \/>\n| 5 | \u3076\u3069\u3046 | 4 | 2025-04-13 |<br \/>\n+&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8212;&#8212;+<br \/>\n5 rows in set (0.01 sec)<br \/>\n==========================================================<\/p>\n<p>\u305d\u308c\u3067\u306f\u30c6\u30fc\u30d6\u30eb\u306e\u6761\u4ef6\u306b\u5408\u308f\u306a\u3044\u30c7\u30fc\u30bf\u3092INSERT\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>Fruits \u306f\u5165\u529b\u5fc5\u9808\u3067\u3059\u304c\u3001 NULL \u3068\u306a\u3063\u3066\u3044\u308bINSERT\u6587\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>==========================================================<br \/>\nmysql&gt; INSERT INTO Fruits2 (Fruit_ID, Fruits, Favorite_Rank, Input_date) VALUES<br \/>\n-&gt; (6, NULL, 6, &#8216;2025-04-13&#8217;);<br \/>\nERROR 1048 (23000): Column &#8216;Fruits&#8217; cannot be null<br \/>\nmysql&gt;<br \/>\n==========================================================<\/p>\n<p>\u300cColumn &#8216;Fruits&#8217; cannot be null\u300d\u3068\u30a8\u30e9\u30fc\u304c\u51fa\u529b\u3057INSERT\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<h2><span id=\"3\">\n3 \uff0e\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066<\/span><\/h2>\n<p>\u524d\u9805\u307e\u3067\u306b\u3082\u5c11\u3057\u89e6\u308c\u307e\u3057\u305f\u304c\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3059\u308b\u306b\u3042\u305f\u308a\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u7d30\u304b\u306a\u6761\u4ef6\u3092\u4ed8\u4e0e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u5148\u307b\u3069\u7d39\u4ecb\u3057\u305f\u3082\u306e\u306b\u52a0\u3048\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u7528\u9014\u306b\u3042\u308f\u305b\u3066\u8a2d\u5b9a\u3092\u304a\u3053\u306a\u3044\u307e\u3059\u3002<\/p>\n<p>\u3000\u2022 PRIMARY KEY\uff1a\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u30ad\u30fc\u3092\u8a2d\u5b9a\u3059\u308b<br \/>\n\u3000\u2022 NOT NULL\uff1aNULL\u3092\u8a31\u53ef\u3057\u306a\u3044<br \/>\n\u3000\u2022 IF NOT EXISTS\uff1a\u30c6\u30fc\u30d6\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306b\u306e\u307f\u4f5c\u6210\u3059\u308b<br \/>\n\u3000\u2022 UNIQUE\uff1a\u30e6\u30cb\u30fc\u30af\u30ad\u30fc\u3092\u8a2d\u5b9a\u3059\u308b<br \/>\n\u3000\u2022 AUTO_INCREMENT\uff1a\u9023\u756a\u3092\u8a2d\u5b9a\u3059\u308b<br \/>\n\u3000\u2022 DEFAULT\uff1a\u30ab\u30e9\u30e0\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3059\u308b<br \/>\n\u3000\u2022 \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff1a\u30ab\u30e9\u30e0\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a2d\u5b9a\u3059\u308b<br \/>\n\u3000\u3000\u203b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3000\u7d22\u5f15\u306e\u3088\u3046\u306a\u3082\u306e\u3002\u30c7\u30fc\u30bf\u306e\u691c\u7d22\u3092\u9ad8\u901f\u5316\u3059\u308b\u76ee\u7684\u3067\u4f5c\u6210\u3059\u308b\u3002<\/p>\n<h2><span id=\"i-3\">\uff14\uff0e\u307e\u3068\u3081<\/span><\/h2>\n<p><span class=\"f-marker-y\">\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u306e\u57fa\u672c\u69cb\u6587<\/span><\/p>\n<p>CREATE TABLE \u30c6\u30fc\u30d6\u30eb\u540d (<br \/>\n\u30ab\u30e9\u30e0\u540d1 \u30c7\u30fc\u30bf\u578b \u30aa\u30d7\u30b7\u30e7\u30f3<br \/>\n\u30ab\u30e9\u30e0\u540d\uff12 \u30c7\u30fc\u30bf\u578b \u30aa\u30d7\u30b7\u30e7\u30f3<br \/>\n);<\/p>\n<p><span class=\"f-marker-y\">\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u306b\u3064\u3044\u3066\u307e\u3068\u3081<\/span><\/p>\n<p>\u30fb\u30c6\u30fc\u30d6\u30eb\u540d\u306fDB\u306e\u4e2d\u3067\u30e6\u30cb\u30fc\u30af\u306b\u3059\u308b<br \/>\n\u30fb\u30ab\u30e9\u30e0\u306b\u306f\u9069\u5207\u306a\u30c7\u30fc\u30bf\u578b\u3092\u8a2d\u5b9a\u3059\u308b<br \/>\n\u30fb\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308a\u3001\u8a73\u7d30\u306a\u8a2d\u5b9a\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b<br \/>\n\u30fb\u30c6\u30fc\u30d6\u30eb\u306e\u8a2d\u8a08\u306f\u30b7\u30b9\u30c6\u30e0\u904b\u7528\u3067\u3068\u3066\u3082\u5927\u5207<\/p>\n<p>\n\u30c6\u30fc\u30d6\u30eb\u306e\u57fa\u672c\u7684\u306a\u4f5c\u6210\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0a\u3067\u3059\u3002<br \/>\n\u5b9f\u969b\u306b\u30b7\u30b9\u30c6\u30e0\u3067\u4f7f\u3046\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u308b\u969b\u306b\u306f\u8003\u616e\u3059\u3079\u304d\u3053\u3068\u304c\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u306e\u57fa\u672c\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u6700\u5f8c\u307e\u3067\u304a\u8aad\u307f\u3044\u305f\u3060\u304d\u307e\u3057\u3066\u3001\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u3010\u53c2\u8003\u30b5\u30a4\u30c8\u3011<br \/>\nhttps:\/\/dev.mysql.com\/doc\/refman\/8.0\/ja\/create-table.html<\/p>\n<p>\u3010\u52d5\u4f5c\u691c\u8a3cDB\u3011<br \/>\nmySQL 8.0.39<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u65b0\u3057\u3044\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3068\u304d\u306f\u300cCREATE TABLE\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002 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