{"id":160727,"date":"2024-11-04T00:30:29","date_gmt":"2024-11-03T16:30:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160727\/"},"modified":"2024-11-04T00:30:30","modified_gmt":"2024-11-03T16:30:30","slug":"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-auto_increment%ef%bc%9a%e4%b8%bb%e9%8d%b5%e8%87%aa%e5%a2%9e%e9%95%b7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160727\/","title":{"rendered":"\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL AUTO_INCREMENT\uff1a\u4e3b\u9375\u81ea\u589e\u9577"},"content":{"rendered":"<h1 id=\"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-auto_increment%ef%bc%9a%e4%b8%bb%e9%8d%b5%e8%87%aa%e5%a2%9e%e9%95%b7-MmhdXhQXfz\">\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL AUTO_INCREMENT\uff1a\u4e3b\u9375\u81ea\u589e\u9577<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u689d\u8a18\u9304\u7684\u91cd\u8981\u5143\u7d20\u3002MySQL \u63d0\u4f9b\u4e86\u4e00\u500b\u975e\u5e38\u65b9\u4fbf\u7684\u529f\u80fd\u2014\u2014AUTO_INCREMENT\uff0c\u9019\u4f7f\u5f97\u4e3b\u9375\u7684\u81ea\u589e\u9577\u8b8a\u5f97\u7c21\u55ae\u800c\u9ad8\u6548\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e MySQL \u4e2d\u7684 AUTO_INCREMENT \u7279\u6027\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u4f7f\u7528\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-auto_increment%ef%bc%9f-MmhdXhQXfz\">\u4ec0\u9ebc\u662f AUTO_INCREMENT\uff1f<\/h2>\n<p>AUTO_INCREMENT \u662f MySQL \u4e2d\u7684\u4e00\u500b\u5c6c\u6027\uff0c\u901a\u5e38\u7528\u65bc\u6574\u6578\u985e\u578b\u7684\u4e3b\u9375\u6b04\u4f4d\u3002\u7576\u4e00\u689d\u65b0\u8a18\u9304\u88ab\u63d2\u5165\u5230\u8cc7\u6599\u8868\u4e2d\u6642\uff0c\u8a72\u6b04\u4f4d\u7684\u503c\u6703\u81ea\u52d5\u589e\u52a0\uff0c\u7121\u9700\u624b\u52d5\u6307\u5b9a\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u4e00\u689d\u8a18\u9304\u90fd\u6709\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u5f9e\u800c\u907f\u514d\u91cd\u8907\u7684\u4e3b\u9375\u503c\u3002<\/p>\n<h2 id=\"auto_increment-%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-MmhdXhQXfz\">AUTO_INCREMENT \u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>\u8981\u4f7f\u7528 AUTO_INCREMENT\uff0c\u9996\u5148\u9700\u8981\u5728\u5275\u5efa\u8cc7\u6599\u8868\u6642\u6307\u5b9a\u8a72\u5c6c\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\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\u70ba AUTO_INCREMENT\uff0c\u4e26\u4e14\u662f\u4e3b\u9375\u3002\u7576\u6211\u5011\u63d2\u5165\u65b0\u7528\u6236\u6642\uff0c\u7121\u9700\u70ba `id` \u6b04\u4f4d\u63d0\u4f9b\u503c\uff0cMySQL \u6703\u81ea\u52d5\u70ba\u5176\u5206\u914d\u4e00\u500b\u552f\u4e00\u7684\u6574\u6578\u503c\u3002<\/p>\n<h2 id=\"%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a%e7%a4%ba%e4%be%8b-MmhdXhQXfz\">\u63d2\u5165\u6578\u64da\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5982\u4f55\u63d2\u5165\u6578\u64da\u7684\u7bc4\u4f8b\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\u6578\u64da\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=\"%e5%a6%82%e4%bd%95%e9%87%8d%e7%bd%ae-auto_increment-%e5%80%bc-MmhdXhQXfz\">\u5982\u4f55\u91cd\u7f6e AUTO_INCREMENT \u503c<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u91cd\u7f6e AUTO_INCREMENT \u7684\u503c\u3002\u4f8b\u5982\uff0c\u7576\u60a8\u522a\u9664\u6240\u6709\u8a18\u9304\u5f8c\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5f9e 1 \u958b\u59cb\u91cd\u65b0\u7de8\u865f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u91cd\u7f6e AUTO_INCREMENT \u503c\uff1a<\/p>\n<pre><code>TRUNCATE TABLE users;<\/code><\/pre>\n<p>\u9019\u5c07\u522a\u9664\u6240\u6709\u8a18\u9304\u4e26\u91cd\u7f6e `id` \u6b04\u4f4d\u7684\u81ea\u589e\u503c\u3002\u8acb\u6ce8\u610f\uff0c\u4f7f\u7528 `TRUNCATE` \u8a9e\u53e5\u6703\u6c38\u4e45\u522a\u9664\u8cc7\u6599\uff0c\u7121\u6cd5\u6062\u5fa9\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-MmhdXhQXfz\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\uff0c\u53ea\u6709\u4e00\u500b\u6b04\u4f4d\u53ef\u4ee5\u8a2d\u7f6e\u70ba AUTO_INCREMENT\u3002<\/li>\n<li>AUTO_INCREMENT \u53ea\u80fd\u7528\u65bc\u6574\u6578\u985e\u578b\u7684\u6b04\u4f4d\uff0c\u5982 INT\u3001BIGINT \u7b49\u3002<\/li>\n<li>\u5982\u679c\u60a8\u624b\u52d5\u63d2\u5165\u4e00\u500b\u7279\u5b9a\u7684\u503c\u5230 AUTO_INCREMENT \u6b04\u4f4d\uff0cMySQL \u5c07\u6703\u6839\u64da\u8a72\u503c\u81ea\u52d5\u8abf\u6574\u4e0b\u4e00\u500b\u81ea\u589e\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-MmhdXhQXfz\">\u7d50\u8ad6<\/h2>\n<p>MySQL \u7684 AUTO_INCREMENT \u529f\u80fd\u70ba\u8cc7\u6599\u5eab\u7ba1\u7406\u63d0\u4f9b\u4e86\u6975\u5927\u7684\u4fbf\u5229\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u9700\u8981\u552f\u4e00\u6a19\u8b58\u7b26\u7684\u60c5\u6cc1\u4e0b\u3002\u901a\u904e\u81ea\u52d5\u751f\u6210\u4e3b\u9375\u503c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5c08\u6ce8\u65bc\u5176\u4ed6\u696d\u52d9\u908f\u8f2f\uff0c\u800c\u4e0d\u5fc5\u64d4\u5fc3\u4e3b\u9375\u7684\u552f\u4e00\u6027\u554f\u984c\u3002\u7121\u8ad6\u662f\u5728\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u7cfb\u7d71\u4e2d\uff0c\u5408\u7406\u4f7f\u7528 AUTO_INCREMENT \u90fd\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\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\u90e8\u7f72\u60a8\u7684 MySQL \u8cc7\u6599\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u521d\u5275\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2d\u7684AUTO_INCREMENT\u529f\u80fd\uff0c\u5b78\u7fd2\u5982\u4f55\u8a2d\u7f6e\u4e3b\u9375\u81ea\u589e\u9577\uff0c\u7c21\u5316\u8cc7\u6599\u5eab\u7ba1\u7406\u8207\u6578\u64da\u63d2\u5165\u904e\u7a0b\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-160727","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160727","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=160727"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160727\/revisions"}],"predecessor-version":[{"id":160728,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160727\/revisions\/160728"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}