{"id":66453,"date":"2024-10-14T17:39:50","date_gmt":"2024-10-14T09:39:50","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66453\/"},"modified":"2024-10-14T17:39:50","modified_gmt":"2024-10-14T09:39:50","slug":"mysql-auto_increment%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66453\/","title":{"rendered":"MySQL AUTO_INCREMENT\u5be6\u969b\u64cd\u4f5c\u7528\u6cd5"},"content":{"rendered":"<h1 id=\"mysql-auto_increment%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e7%94%a8%e6%b3%95-xNqGTynOQk\">MySQL AUTO_INCREMENT\u5be6\u969b\u64cd\u4f5c\u7528\u6cd5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u8cc7\u6599\u5eab\uff0c\u7279\u5225\u9069\u5408\u7528\u65bc\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u3002MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662fAUTO_INCREMENT\u5c6c\u6027\u3002\u9019\u500b\u5c6c\u6027\u4f7f\u5f97\u8cc7\u6599\u8868\u4e2d\u7684\u67d0\u4e00\u5217\uff08\u901a\u5e38\u662f\u4e3b\u9375\uff09\u80fd\u5920\u81ea\u52d5\u751f\u6210\u552f\u4e00\u7684\u6574\u6578\u503c\uff0c\u9019\u5c0d\u65bc\u78ba\u4fdd\u8cc7\u6599\u7684\u552f\u4e00\u6027\u548c\u5b8c\u6574\u6027\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h2 id=\"auto_increment%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-xNqGTynOQk\">AUTO_INCREMENT\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>AUTO_INCREMENT\u5c6c\u6027\u901a\u5e38\u7528\u65bc\u6574\u6578\u578b\u5225\u7684\u6b04\u4f4d\uff0c\u7576\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0cMySQL\u6703\u81ea\u52d5\u70ba\u8a72\u6b04\u4f4d\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u6578\u5b57\u3002\u9019\u500b\u6578\u5b57\u901a\u5e38\u662f\u5f9e1\u958b\u59cb\uff0c\u4e26\u4e14\u6bcf\u6b21\u63d2\u5165\u65b0\u8a18\u9304\u6642\u81ea\u52d5\u905e\u589e\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u7c21\u5316\u4e86\u8cc7\u6599\u7684\u7ba1\u7406\uff0c\u9084\u6e1b\u5c11\u4e86\u56e0\u624b\u52d5\u8f38\u5165\u800c\u53ef\u80fd\u51fa\u73fe\u7684\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8auto_increment-xNqGTynOQk\">\u5982\u4f55\u4f7f\u7528AUTO_INCREMENT<\/h2>\n<p>\u5728\u4f7f\u7528AUTO_INCREMENT\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5275\u5efa\u4e00\u500b\u8cc7\u6599\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5275\u5efa\u4e00\u500b\u5305\u542bAUTO_INCREMENT\u6b04\u4f4d\u7684\u8cc7\u6599\u8868\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL,\n    email VARCHAR(100) NOT NULL\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c`id`\u6b04\u4f4d\u88ab\u8a2d\u7f6e\u70baAUTO_INCREMENT\uff0c\u4e26\u4e14\u662f\u4e3b\u9375\u3002\u9019\u610f\u5473\u8457\u6bcf\u7576\u63d2\u5165\u4e00\u689d\u65b0\u8a18\u9304\u6642\uff0c`id`\u6b04\u4f4d\u6703\u81ea\u52d5\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u6574\u6578\u503c\u3002<\/p>\n<h2 id=\"%e6%8f%92%e5%85%a5%e8%b3%87%e6%96%99-xNqGTynOQk\">\u63d2\u5165\u8cc7\u6599<\/h2>\n<p>\u63d2\u5165\u8cc7\u6599\u6642\uff0c\u60a8\u4e0d\u9700\u8981\u70baAUTO_INCREMENT\u6b04\u4f4d\u63d0\u4f9b\u503c\u3002MySQL\u6703\u81ea\u52d5\u8655\u7406\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>INSERT INTO users (username, email) VALUES ('Alice', 'alice@example.com');\nINSERT INTO users (username, email) VALUES ('Bob', 'bob@example.com');<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u63d2\u5165\u8a9e\u53e5\u5f8c\uff0c`users`\u8868\u4e2d\u7684\u8cc7\u6599\u5c07\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>+----+----------+-------------------+\n| id | username | email             |\n+----+----------+-------------------+\n|  1 | Alice    | alice@example.com  |\n|  2 | Bob      | bob@example.com    |\n+----+----------+-------------------+<\/code><\/pre>\n<h2 id=\"%e6%9f%a5%e8%a9%a2auto_increment%e7%9a%84%e7%95%b6%e5%89%8d%e5%80%bc-xNqGTynOQk\">\u67e5\u8a62AUTO_INCREMENT\u7684\u7576\u524d\u503c<\/h2>\n<p>\u5982\u679c\u60a8\u60f3\u67e5\u8a62AUTO_INCREMENT\u6b04\u4f4d\u7684\u7576\u524d\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT AUTO_INCREMENT\nFROM information_schema.TABLES\nWHERE TABLE_SCHEMA = 'your_database_name'\nAND TABLE_NAME = 'users';<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de`users`\u8868\u7684\u4e0b\u4e00\u500bAUTO_INCREMENT\u503c\u3002<\/p>\n<h2 id=\"%e9%87%8d%e7%bd%aeauto_increment%e5%80%bc-xNqGTynOQk\">\u91cd\u7f6eAUTO_INCREMENT\u503c<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u91cd\u7f6eAUTO_INCREMENT\u7684\u503c\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u8a9e\u53e5\u5be6\u73fe\uff1a<\/p>\n<pre><code>ALTER TABLE users AUTO_INCREMENT = 1;<\/code><\/pre>\n<p>\u8acb\u6ce8\u610f\uff0c\u91cd\u7f6eAUTO_INCREMENT\u503c\u53ef\u80fd\u6703\u5c0e\u81f4\u4e3b\u9375\u885d\u7a81\uff0c\u7279\u5225\u662f\u7576\u8868\u4e2d\u5df2\u7d93\u5b58\u5728\u8cc7\u6599\u6642\u3002\u56e0\u6b64\uff0c\u5728\u57f7\u884c\u6b64\u64cd\u4f5c\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u60a8\u4e86\u89e3\u5176\u5f71\u97ff\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-xNqGTynOQk\">\u7d50\u8ad6<\/h2>\n<p>AUTO_INCREMENT\u662f\u4e00\u500b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u7c21\u5316\u8cc7\u6599\u7684\u7ba1\u7406\uff0c\u78ba\u4fdd\u8cc7\u6599\u7684\u552f\u4e00\u6027\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528AUTO_INCREMENT\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6599\u5eab\u4e2d\u7684\u8a18\u9304\uff0c\u4e26\u6e1b\u5c11\u624b\u52d5\u8f38\u5165\u932f\u8aa4\u7684\u98a8\u96aa\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684MySQL\u8cc7\u6599\u5eab\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u5c08\u6848\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u63f4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2dAUTO_INCREMENT\u7684\u5be6\u969b\u64cd\u4f5c\u7528\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u81ea\u52d5\u751f\u6210\u552f\u4e00ID\uff0c\u7c21\u5316\u6578\u64da\u5eab\u7ba1\u7406\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-66453","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=66453"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66453\/revisions"}],"predecessor-version":[{"id":66454,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66453\/revisions\/66454"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}