{"id":6648,"date":"2024-11-10T11:12:59","date_gmt":"2024-11-10T02:12:59","guid":{"rendered":"https:\/\/taitan916.info\/blog\/?p=6648"},"modified":"2024-08-09T14:19:48","modified_gmt":"2024-08-09T05:19:48","slug":"post-6648","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/6648","title":{"rendered":"MySQL\u306b\u3066SELECT\u6642\u306bdate\u578b\u306e\u30ab\u30e9\u30e0\u304b\u3089\u5e74\u9f62\u3092\u8a08\u7b97\u3057\u53d6\u5f97\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

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\u5e74\u9f62\u3092\u8a08\u7b97\u3057\u3066\u53d6\u5f97\u3057\u305f\u3044\u3002\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u3063\u3066PHP\u5074\u3067\u8a08\u7b97\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u306e\u304b\u3068\u601d\u3044\u304d\u3084MySQL\u3067\u5b8c\u7d50\u3067\u304d\u308b\u307f\u305f\u3044\u3002\u4ee5\u4e0b\u306b\u5bfe\u5fdc\u65b9\u6cd5\u3092\u30e1\u30e2\u3002<\/p>\n

 <\/p>\n

\u30c6\u30fc\u30d6\u30eb\u69cb\u9020\u3068\u30c7\u30fc\u30bf\u5185\u5bb9<\/h2>\n
mysql> 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> SELECT * FROM `test_table`;\r\n+----+-----------+------------+\r\n| id | name      | birthday   |\r\n+----+-----------+------------+\r\n|  1 | \u5c71\u7530      | 2000-01-01 |\r\n|  2 | \u9234\u6728      | 1990-05-05 |\r\n|  3 | \u4f50\u3005\u6728    | 1980-12-31 |\r\n+----+-----------+------------+<\/pre>\n
 <\/p>\n
\u5bfe\u5fdc\u65b9\u6cd5<\/h2>\n
SQL\u6587<\/h3>\n
SELECT `name`, `birthday`, TIMESTAMPDIFF(YEAR, `birthday`, CURDATE()) AS `age`\r\nFROM `test_table` \r\nORDER BY `age`;<\/pre>\n
\u51fa\u529b\u7d50\u679c<\/h3>\n
+-----------+------------+------+\r\n| name      | birthday   | age  |\r\n+-----------+------------+------+\r\n| \u5c71\u7530      | 2000-01-01 |   24 |\r\n| \u9234\u6728      | 1990-05-05 |   34 |\r\n| \u4f50\u3005\u6728    | 1980-12-31 |   43 |\r\n+-----------+------------+------+<\/pre>\n
\u89e3\u8aac\u7b49<\/h3>\n
CURDATE\u3067\u73fe\u5728\u306e\u5e74\u6708\u65e5\u3092\u53d6\u5f97\u2192TIMESTAMPDIFF\u3067\u73fe\u5728\u65e5\u4ed8\u3068birthday\u306e\u5dee\u5206\u3092\u53d6\u5f97\u2192TIMESTAMPDIFF\u306e\u7b2c1\u5f15\u6570\u3067\u3042\u308bYEAR\u3068\u3057\u3066age\u3092\u51fa\u529b\u3068\u3044\u3046\u6d41\u308c\u307f\u305f\u3044\u3002<\/p>\n
 <\/p>\n
\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/h2>\n
\u65e5\u4ed8\u306e\u8a08\u7b97<\/h3>\n
https:\/\/dev.mysql.com\/doc\/refman\/8.0\/ja\/date-calculations.html<\/a><\/p>\n
TIMESTAMPDIFF<\/h3>\n
https:\/\/dev.mysql.com\/doc\/refman\/8.0\/ja\/date-and-time-functions.html#function_timestampdiff<\/a><\/p>\n
CURDATE<\/h3>\n
https:\/\/dev.mysql.com\/doc\/refman\/8.0\/ja\/date-and-time-functions.html#function_curdate<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
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\u5e74\u9f62\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-6648","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\/6648","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=6648"}],"version-history":[{"count":1,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/6648\/revisions"}],"predecessor-version":[{"id":6649,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/6648\/revisions\/6649"}],"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=6648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/categories?post=6648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/tags?post=6648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}