{"id":6650,"date":"2024-11-12T10:56:02","date_gmt":"2024-11-12T01:56:02","guid":{"rendered":"https:\/\/taitan916.info\/blog\/?p=6650"},"modified":"2024-08-09T15:04:33","modified_gmt":"2024-08-09T06:04:33","slug":"post-6650","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/6650","title":{"rendered":"MySQL\u306b\u3066SELECT\u6642\u306bdate\u578b\u306e\u30ab\u30e9\u30e0\u304b\u3089\u548c\u66a6\u3092\u8a08\u7b97\u3057\u8868\u793a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>MySQL\u306bdate\u578b\u306e\u30ab\u30e9\u30e0\u306b\u8a95\u751f\u5e74\u6708\u65e5\u304c\u683c\u7d0d\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u3053\u304b\u3089\u548c\u66a6\u3092\u8a08\u7b97\u3057\u3066\u53d6\u5f97\u3057\u305f\u3044\u3002\u307e\u305f\u3001date\u578b\u3060\u3068\u57fa\u672c\u7684\u306b\u306f\u300cYYYY-MM-DD\u300d\u3082\u3057\u304f\u306f\u300cYYYY\/MM\/DD\u300d\u5f62\u5f0f\u3060\u3068\u601d\u3046\u304c\u3001\u3053\u308c\u3092\u300c\u3007\u3007Y\u5e74M\u6708D\u65e5\u300d\u306b\u6574\u5f62\u3057\u3066\u8868\u793a\u3057\u305f\u3044\u3002\u4ee5\u4e0b\u306b\u5bfe\u5fdc\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2><span id=\"i\">\u30c6\u30fc\u30d6\u30eb\u69cb\u9020\u3068\u30c7\u30fc\u30bf\u5185\u5bb9<\/span><\/h2>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">mysql&gt; SHOW COLUMNS FROM `test_table`;\r\n+----------+--------------+------+-----+---------+----------------+\r\n| Field    | Type         | Null | Key | Default | Extra          |\r\n+----------+--------------+------+-----+---------+----------------+\r\n| id       | int          | NO   | PRI | NULL    | auto_increment |\r\n| name     | varchar(255) | NO   |     | NULL    |                |\r\n| birthday | date         | NO   |     | NULL    |                |\r\n+----------+--------------+------+-----+---------+----------------+\r\n\r\nmysql&gt; SELECT * FROM `test_table`;\r\n+----+-----------+------------+\r\n| id | name      | birthday   |\r\n+----+-----------+------------+\r\n|  1 | \u5c71\u7530      | 2020-01-01 |\r\n|  2 | \u9234\u6728      | 1990-05-05 |\r\n|  3 | \u4f50\u3005\u6728    | 1980-12-31 |\r\n+----+-----------+------------+<\/pre>\n<p>&nbsp;<\/p>\n<h2><span id=\"i-2\">\u5bfe\u5fdc\u65b9\u6cd5<\/span><\/h2>\n<h3><span id=\"SQL\">SQL\u6587<\/span><\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">SELECT `birthday`, \r\n    CASE \r\n        WHEN `birthday` &gt; '2019-04-30' THEN CONCAT('\u4ee4\u548c', YEAR(`birthday`) - 2018, date_format(`birthday`, '\u5e74%c\u6708%e\u65e5'))\r\n        WHEN `birthday` &gt; '1989-01-07' THEN CONCAT('\u5e73\u6210', YEAR(`birthday`) - 1988, date_format(`birthday`, '\u5e74%c\u6708%e\u65e5'))\r\n        WHEN `birthday` &gt; '1926-12-24' THEN CONCAT('\u662d\u548c', YEAR(`birthday`) - 1925, date_format(`birthday`, '\u5e74%c\u6708%e\u65e5'))\r\n        WHEN `birthday` &gt; '1912-07-29' THEN CONCAT('\u5927\u6b63', YEAR(`birthday`) - 1911, date_format(`birthday`, '\u5e74%c\u6708%e\u65e5'))\r\n        WHEN `birthday` &gt; '1868-01-24' THEN CONCAT('\u660e\u6cbb', YEAR(`birthday`) - 1867, date_format(`birthday`, '\u5e74%c\u6708%e\u65e5'))\r\n    END AS `birthday_wareki`\r\nFROM `test_table`;<\/pre>\n<h3>\u51fa\u529b\u7d50\u679c<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">+------------+-----------------------+\r\n| birthday   | birthday_wareki       |\r\n+------------+-----------------------+\r\n| 2020-01-01 | \u4ee4\u548c2\u5e741\u67081\u65e5         |\r\n| 1990-05-05 | \u5e73\u62102\u5e745\u67085\u65e5         |\r\n| 1980-12-31 | \u662d\u548c55\u5e7412\u670831\u65e5      |\r\n+------------+-----------------------+<\/pre>\n<p>&nbsp;<\/p>\n<h2>\u53c2\u8003\u30b5\u30a4\u30c8<\/h2>\n<p><a href=\"https:\/\/note.com\/maiyamashita\/n\/n2c6d5f319a64\" target=\"_blank\" rel=\"noopener\">https:\/\/note.com\/maiyamashita\/n\/n2c6d5f319a64<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u306bdate\u578b\u306e\u30ab\u30e9\u30e0\u306b\u8a95\u751f\u5e74\u6708\u65e5\u304c\u683c\u7d0d\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u3053\u304b\u3089\u548c\u66a6\u3092\u8a08\u7b97\u3057 ... <\/p>\n","protected":false},"author":1,"featured_media":1072,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5,66],"tags":[],"class_list":["post-6650","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql","category-database"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/6650","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/comments?post=6650"}],"version-history":[{"count":5,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/6650\/revisions"}],"predecessor-version":[{"id":6656,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/6650\/revisions\/6656"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media\/1072"}],"wp:attachment":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media?parent=6650"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/categories?post=6650"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/tags?post=6650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}