{"id":11418,"date":"2020-08-01T14:44:32","date_gmt":"2020-08-01T05:44:32","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=11418"},"modified":"2023-05-27T21:28:40","modified_gmt":"2023-05-27T12:28:40","slug":"%e3%80%90mysql%e3%80%91%e3%83%87%e3%83%bc%e3%82%bf%e5%9e%8b%e3%81%ae%e7%a8%ae%e9%a1%9e","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=11418","title":{"rendered":"\u3010MySQL\u3011\u30c7\u30fc\u30bf\u578b\u306e\u7a2e\u985e"},"content":{"rendered":"<p>MySQL\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u578b\u306f\u57fa\u672c\u7684\u306b\u4e09\u3064\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u6570\u5024\u578b<\/li>\n<li>\u6587\u5b57\u578b<\/li>\n<li>\u65e5\u4ed8\u578b<\/li>\n<\/ul>\n<h2>\u6570\u5024\u578b<\/h2>\n<h3>\u6574\u6570\u578b<\/h3>\n<p>\u57fa\u672c\u7684\u306b\u306f<span style=\"color: #ff0000;\"><strong>INT\u578b<\/strong><\/span>\u3092\u6291\u3048\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<th><\/th>\n<th>\u30c7\u30fc\u30bf\u578b<\/th>\n<th>\u5024\u306e\u7bc4\u56f2<\/th>\n<th>UNSIGNED<\/th>\n<th>ZEROFILL<\/th>\n<\/tr>\n<tr>\n<td>TYNYINT(m)<\/td>\n<td>\u6574\u6570\u578b(1\u30d0\u30a4\u30c8\uff09<\/td>\n<td>-128\u301c127<\/td>\n<td>0\u301c255<\/td>\n<td>000\u301c255<\/td>\n<\/tr>\n<tr>\n<td>SMALLINT(m)<\/td>\n<td>\u6574\u6570\u578b(2\u30d0\u30a4\u30c8\uff09<\/td>\n<td>-32768\u301c32767<\/td>\n<td>0\u301c65536<\/td>\n<td>00000\u301c65536<\/td>\n<\/tr>\n<tr>\n<td>MEDIUMINT(m)<\/td>\n<td>\u6574\u6570\u578b(3\u30d0\u30a4\u30c8\uff09<\/td>\n<td>-8388608\u301c8388607<\/td>\n<td>0\u301c16777215<\/td>\n<td>0000000\u301c16777215<\/td>\n<\/tr>\n<tr>\n<td>INT(m)<\/td>\n<td>\u6574\u6570\u578b(4\u30d0\u30a4\u30c8\uff09<\/td>\n<td>-2147483648\u301c2147483647<\/td>\n<td>0\u301c4294967295<\/td>\n<td>0000000000\u301c4294967295<\/td>\n<\/tr>\n<tr>\n<td>BIGINT(m)<\/td>\n<td>\u6574\u6570\u578b(8\u30d0\u30a4\u30c8)<\/td>\n<td>-92233720368\u301c92233720367<\/td>\n<td>0\u301c18446744073709551615<\/td>\n<td>00000000000000000000\u301c18446744073709551615<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>UNSIGNED<\/h4>\n<p>\u30de\u30a4\u30ca\u30b9\u65b9\u5411\u306e\u6570\u5024\u7bc4\u56f2\u3092\u30d7\u30e9\u30b9\u65b9\u5411\u306b\u5168\u3066\u6301\u3063\u3066\u3044\u304f\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u3002<\/p>\n<h4>ZEROFILL<\/h4>\n<p>0\u57cb\u3081\u3067\u304d\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u3002UNSIGNED\u3068\u540c\u3058\u3088\u3046\u306b\u30de\u30a4\u30ca\u30b9\u306e\u5024\u306f\u4f7f\u3048\u307e\u305b\u3093\u3002<\/p>\n<h3>\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/h3>\n<p>\u591a\u304f\u306e\u5834\u5408\u306fFLOAT\u578b\u3092\u4f7f\u3063\u3066\u304a\u3051\u3070\u6c4e\u7528\u6027\u304c\u9ad8\u304f\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<th><\/th>\n<th>\u30c7\u30fc\u30bf\u578b<\/th>\n<th>\u5024\u306e\u7bc4\u56f2<\/th>\n<\/tr>\n<tr>\n<td>FLOAT<\/td>\n<td>\u5358\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/td>\n<td>-3.402823466E+38\u301c3.402823466E+38<\/td>\n<\/tr>\n<tr>\n<td>DOUBLE<\/td>\n<td>\u500d\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/td>\n<td>-1.7976931348623157E+308\u301c1.7976931348623157E+308<\/td>\n<\/tr>\n<tr>\n<td>FLOAT(m,d)<\/td>\n<td>\u5358\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/td>\n<td>m\uff1a\u6574\u6570\u306e\u6841\u6570\u30011\u301c255\u6841\u3001n\uff1a\u5c0f\u6570\u306e\u6841\u6570\u30010\u301c30\u6841\u307e\u3067\u6307\u5b9a\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>DOUBLE(m,d)<\/td>\n<td>\u500d\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/td>\n<td>\u00a0m\uff1a\u6574\u6570\u306e\u6841\u6570\u30011\u301c255\u6841\u3001n\uff1a\u5c0f\u6570\u306e\u6841\u6570\u30010\u301c30\u6841\u307e\u3067\u6307\u5b9a\u53ef\u80fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6587\u5b57\u578b<\/h2>\n<p>\u57fa\u672c\u7684\u306b\u306f\u6587\u5b57\u5217\u3092\u683c\u7d0d\u3059\u308b\u9805\u76ee\u306b\u95a2\u3057\u3066\u306f<span style=\"color: #ff0000;\"><strong>VARCHAR<\/strong><\/span>\u3092\u4f7f\u3048\u3070\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<th><\/th>\n<th>\u30c7\u30fc\u30bf\u578b<\/th>\n<th>\u5024\u306e\u7bc4\u56f2<\/th>\n<\/tr>\n<tr>\n<td>CHAR(m)<\/td>\n<td>\u56fa\u5b9a\u9577\u6587\u5b57\u5217<\/td>\n<td>m(\u6587\u5b57\u6570\u6307\u5b9a)\uff1a0\u301c255\u6587\u5b57<\/td>\n<\/tr>\n<tr>\n<td>VARCHAR(m)<\/td>\n<td>\u53ef\u5909\u9577\u6587\u5b57\u5217<\/td>\n<td>m(\u30d0\u30a4\u30c8\u6570)\uff1a0\u301c65535\u30d0\u30a4\u30c8<\/td>\n<\/tr>\n<tr>\n<td>TYNYTEXT<\/td>\n<td>\u30c6\u30ad\u30b9\u30c8\u578b<\/td>\n<td>0\u301c255\u30d0\u30a4\u30c8\uff08\u56fa\u5b9a\uff09<\/td>\n<\/tr>\n<tr>\n<td>TEXT<\/td>\n<td>\u30c6\u30ad\u30b9\u30c8\u578b<\/td>\n<td>0\u301c65535\u30d0\u30a4\u30c8(\u56fa\u5b9a)<\/td>\n<\/tr>\n<tr>\n<td>MEDIUMTEXT<\/td>\n<td>\u30c6\u30ad\u30b9\u30c8\u578b<\/td>\n<td>0\u301c16777215\u30d0\u30a4\u30c8(\u56fa\u5b9a)<\/td>\n<\/tr>\n<tr>\n<td>LONGTEXT<\/td>\n<td>\u30c6\u30ad\u30b9\u30c8\u578b<\/td>\n<td>0\u301c4294967295\u30d0\u30a4\u30c8(\u56fa\u5b9a)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u65e5\u4ed8\u578b<\/h2>\n<table>\n<tbody>\n<tr>\n<th><\/th>\n<th>\u30c7\u30fc\u30bf\u578b<\/th>\n<th>\u57fa\u672c\u30d5\u30a9\u30fc\u30de\u30c3\u30c8<\/th>\n<th>\u5099\u8003<\/th>\n<\/tr>\n<tr>\n<td>DATE<\/td>\n<td>\u65e5\u4ed8\u578b<\/td>\n<td>'YYYY-MM-DD'<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>DATETIME<\/td>\n<td>\u65e5\u4ed8\u6642\u523b\u578b<\/td>\n<td>'YYYY-MM-DD HH:MM:SS'<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>TIMESTAMP<\/td>\n<td>\u65e5\u4ed8\u6642\u523b\u578b<\/td>\n<td>'YYYY-MM-DD HH:MM:SS'<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>TIME<\/td>\n<td>\u6642\u523b\u578b<\/td>\n<td>'HH:MM:SS'<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>YEAR[4]<\/td>\n<td>\u65e5\u4ed8\u578b(4\u6841\u5e74)<\/td>\n<td>'YYYY'<\/td>\n<td>1901\u301c2155\u307e\u305f\u306f0000\u304c\u8a2d\u5b9a\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>YEAR[2]<\/td>\n<td>\u65e5\u4ed8\u578b(2\u6841\u5e74)<\/td>\n<td>'YY'<\/td>\n<td>70\u301c69\u304c\u8a2d\u5b9a\u53ef\u80fd(1970\u301c2069\u3092\u6307\u3059)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>DATETIME\u578b<\/h3>\n<h4>\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u308b\u6642\u9593\u306e\u7bc4\u56f2<\/h4>\n<pre class=\"lang:default decode:true\">'1000-01-01 00:00:00' \uff5e '9999-12-31 23:59:59'<\/pre>\n<h4>create\u6587<\/h4>\n<pre class=\"lang:default decode:true\">CREATE TABLE datetime_tb (\r\n    id int NOT NULL AUTO_INCREMENT,\r\n    insertDate datetime DEFAULT NULL,\r\n    PRIMARY KEY (id)\r\n);<\/pre>\n<h4>insert\u6587<\/h4>\n<pre class=\"lang:default decode:true \">INSERT INTO datetime_tb (insertDate) VALUE ('2021-10-23 19:16:30');\r\nINSERT INTO datetime_tb (insertDate) VALUE (NOW()); \/\/ \u73fe\u5728\u306e\u65e5\u4ed8<\/pre>\n<h3>TIMESTAMP\u578b<\/h3>\n<h4>\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u6642\u9593\u306e\u7bc4\u56f2<\/h4>\n<p>UNIX\u6642\u9593\u3057\u304b\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u3002<\/p>\n<pre class=\"lang:default decode:true  \">'1970-01-01 00:00:01' UTC \uff5e '2038-01-19 03:14:07' UTC<\/pre>\n","protected":false},"excerpt":{"rendered":"MySQL\u306b\u304a\u3051\u308b\u30c7\u30fc\u30bf\u578b\u306f\u57fa\u672c\u7684\u306b\u4e09\u3064\u3067\u3059\u3002 \u6570\u5024\u578b \u6587\u5b57\u578b \u65e5\u4ed8\u578b \u6570\u5024\u578b \u6574\u6570\u578b \u57fa\u672c\u7684\u306b\u306fINT\u578b\u3092\u6291\u3048\u3066\u304a\u304f\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002 \u30c7\u30fc\u30bf\u578b \u5024\u306e\u7bc4\u56f2 UNSIGNED ZEROFILL TYNYINT(m) \u6574\u6570\u578b [&hellip;]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[95],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/11418"}],"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=11418"}],"version-history":[{"count":9,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/11418\/revisions"}],"predecessor-version":[{"id":20363,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/11418\/revisions\/20363"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11418"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}