{"id":168167,"date":"2024-11-06T10:04:25","date_gmt":"2024-11-06T02:04:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168167\/"},"modified":"2024-11-06T10:04:26","modified_gmt":"2024-11-06T02:04:26","slug":"%e5%85%ad%e6%a2%9d%e6%af%94%e8%bc%83%e6%9c%89%e7%94%a8%e7%9a%84mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e7%9a%84sql%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168167\/","title":{"rendered":"\u516d\u689d\u6bd4\u8f03\u6709\u7528\u7684MySQL\u6578\u64da\u5eab\u64cd\u4f5c\u7684SQL\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"%e5%85%ad%e6%a2%9d%e6%af%94%e8%bc%83%e6%9c%89%e7%94%a8%e7%9a%84mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e7%9a%84sql%e8%aa%9e%e5%8f%a5-WoxnVngEGU\">\u516d\u689d\u6bd4\u8f03\u6709\u7528\u7684MySQL\u6578\u64da\u5eab\u64cd\u4f5c\u7684SQL\u8a9e\u53e5<\/h1>\n<p>MySQL\u662f\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7121\u8ad6\u662f\u958b\u767c\u8005\u9084\u662f\u6578\u64da\u5eab\u7ba1\u7406\u54e1\uff0c\u638c\u63e1\u4e00\u4e9b\u57fa\u672c\u7684SQL\u8a9e\u53e5\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u516d\u689d\u6bd4\u8f03\u6709\u7528\u7684MySQL\u6578\u64da\u5eab\u64cd\u4f5c\u7684SQL\u8a9e\u53e5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"1-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-WoxnVngEGU\">1. \u5275\u5efa\u6578\u64da\u5eab<\/h2>\n<p>\u5728\u958b\u59cb\u4f7f\u7528MySQL\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5275\u5efa\u4e00\u500b\u6578\u64da\u5eab\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u5275\u5efa\u4e00\u500b\u65b0\u7684\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>CREATE DATABASE my_database;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cmy_database\u201d\u7684\u6578\u64da\u5eab\u3002\u5275\u5efa\u6578\u64da\u5eab\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528USE\u8a9e\u53e5\u4f86\u9078\u64c7\u8a72\u6578\u64da\u5eab\u9032\u884c\u5f8c\u7e8c\u64cd\u4f5c\uff1a<\/p>\n<pre><code>USE my_database;<\/code><\/pre>\n<h2 id=\"2-%e5%89%b5%e5%bb%ba%e8%a1%a8-WoxnVngEGU\">2. \u5275\u5efa\u8868<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u8868\u662f\u5b58\u5132\u6578\u64da\u7684\u57fa\u672c\u6b65\u9a5f\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\u7684\u793a\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    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5275\u5efa\u4e86\u4e00\u500b\u5305\u542b\u7528\u6236ID\u3001\u7528\u6236\u540d\u3001\u96fb\u5b50\u90f5\u4ef6\u548c\u5275\u5efa\u6642\u9593\u7684\u8868\u3002<\/p>\n<h2 id=\"3-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-WoxnVngEGU\">3. \u63d2\u5165\u6578\u64da<\/h2>\n<p>\u5275\u5efa\u8868\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT\u8a9e\u53e5\u5411\u8868\u4e2d\u63d2\u5165\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>INSERT INTO users (username, email) VALUES ('john_doe', 'john@example.com');<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u4e00\u689d\u65b0\u7528\u6236\u7684\u6578\u64da\u63d2\u5165\u5230\u201cusers\u201d\u8868\u4e2d\u3002<\/p>\n<h2 id=\"4-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-WoxnVngEGU\">4. \u67e5\u8a62\u6578\u64da<\/h2>\n<p>\u67e5\u8a62\u6578\u64da\u662f\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u6700\u5e38\u898b\u7684\u9700\u6c42\u4e4b\u4e00\u3002\u53ef\u4ee5\u4f7f\u7528SELECT\u8a9e\u53e5\u4f86\u67e5\u8a62\u6578\u64da\uff1a<\/p>\n<pre><code>SELECT * FROM users;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u201cusers\u201d\u8868\u4e2d\u7684\u6240\u6709\u8a18\u9304\u3002\u5982\u679c\u53ea\u60f3\u67e5\u8a62\u7279\u5b9a\u7684\u5217\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT username, email FROM users;<\/code><\/pre>\n<h2 id=\"5-%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-WoxnVngEGU\">5. \u66f4\u65b0\u6578\u64da<\/h2>\n<p>\u5982\u679c\u9700\u8981\u66f4\u65b0\u8868\u4e2d\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u7528\u6236\u96fb\u5b50\u90f5\u4ef6\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE users SET email = 'new_email@example.com' WHERE username = 'john_doe';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u7528\u6236\u201cjohn_doe\u201d\u7684\u96fb\u5b50\u90f5\u4ef6\u66f4\u65b0\u70ba\u201cnew_email@example.com\u201d\u3002<\/p>\n<h2 id=\"6-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-WoxnVngEGU\">6. \u522a\u9664\u6578\u64da<\/h2>\n<p>\u6700\u5f8c\uff0c\u7576\u9700\u8981\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528DELETE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u522a\u9664\u7528\u6236\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE username = 'john_doe';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u522a\u9664\u7528\u6236\u540d\u70ba\u201cjohn_doe\u201d\u7684\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WoxnVngEGU\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1\u9019\u516d\u689d\u57fa\u672c\u7684MySQL\u64cd\u4f5cSQL\u8a9e\u53e5\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u3002\u5f9e\u5275\u5efa\u6578\u64da\u5eab\u548c\u8868\uff0c\u5230\u63d2\u5165\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\uff0c\u9019\u4e9b\u64cd\u4f5c\u90fd\u662f\u65e5\u5e38\u5de5\u4f5c\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u7db2\u7ad9\u3002\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u516d\u689d\u5be6\u7528\u7684MySQL\u6578\u64da\u5eab\u64cd\u4f5cSQL\u8a9e\u53e5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u67e5\u8a62\u548c\u6578\u64da\u8655\u7406\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-168167","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168167","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=168167"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168167\/revisions"}],"predecessor-version":[{"id":168168,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168167\/revisions\/168168"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}