{"id":143991,"date":"2024-11-01T02:57:19","date_gmt":"2024-10-31T18:57:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/143991\/"},"modified":"2024-11-01T02:57:20","modified_gmt":"2024-10-31T18:57:20","slug":"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%bb%ba%e7%ab%8b%ef%bc%9a%e5%be%9e%e9%9b%b6%e9%96%8b%e5%a7%8b%e7%9a%84%e5%85%a8%e9%81%8e%e7%a8%8b%e8%a9%b3%e8%a7%a3-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%bb%ba%e7%ab%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/143991\/","title":{"rendered":"SQL \u6578\u64da\u5eab\u5efa\u7acb\uff1a\u5f9e\u96f6\u958b\u59cb\u7684\u5168\u904e\u7a0b\u8a73\u89e3 (sql \u6578\u64da\u5eab\u5efa\u7acb\u904e\u7a0b)"},"content":{"rendered":"<h1 id=\"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%bb%ba%e7%ab%8b%ef%bc%9a%e5%be%9e%e9%9b%b6%e9%96%8b%e5%a7%8b%e7%9a%84%e5%85%a8%e9%81%8e%e7%a8%8b%e8%a9%b3%e8%a7%a3-WcRjtoUrKR\">SQL \u6578\u64da\u5eab\u5efa\u7acb\uff1a\u5f9e\u96f6\u958b\u59cb\u7684\u5168\u904e\u7a0b\u8a73\u89e3<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u6578\u64da\u5eab\u7684\u5efa\u7acb\u548c\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u6578\u64da\u5eab\u90fd\u662f\u5b58\u5132\u548c\u7ba1\u7406\u6578\u64da\u7684\u6838\u5fc3\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5f9e\u96f6\u958b\u59cb\u5efa\u7acb SQL \u6578\u64da\u5eab\u7684\u5168\u904e\u7a0b\uff0c\u5e6b\u52a9\u8b80\u8005\u638c\u63e1\u57fa\u672c\u6982\u5ff5\u548c\u5be6\u8e10\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"1-%e4%ba%86%e8%a7%a3-sql-%e6%95%b8%e6%93%9a%e5%ba%ab-WcRjtoUrKR\">1. \u4e86\u89e3 SQL \u6578\u64da\u5eab<\/h2>\n<p>SQL \u6578\u64da\u5eab\u662f\u4e00\u7a2e\u4f7f\u7528 SQL \u8a9e\u8a00\u9032\u884c\u6578\u64da\u7ba1\u7406\u7684\u7cfb\u7d71\u3002\u5b83\u5141\u8a31\u7528\u6236\u5275\u5efa\u3001\u8b80\u53d6\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u5e38\u898b\u7684 SQL \u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u5305\u62ec MySQL\u3001PostgreSQL\u3001Microsoft SQL Server \u548c SQLite \u7b49\u3002<\/p>\n<h2 id=\"2-%e5%ae%89%e8%a3%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e7%b3%bb%e7%b5%b1-WcRjtoUrKR\">2. \u5b89\u88dd\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71<\/h2>\n<p>\u5728\u5efa\u7acb SQL \u6578\u64da\u5eab\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5b89\u88dd\u4e00\u500b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u4ee5 MySQL \u70ba\u4f8b\uff0c\u4ee5\u4e0b\u662f\u5b89\u88dd\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u8a2a\u554f MySQL \u5b98\u65b9\u7db2\u7ad9\uff0c\u4e0b\u8f09\u9069\u5408\u60a8\u64cd\u4f5c\u7cfb\u7d71\u7684\u5b89\u88dd\u5305\u3002<\/li>\n<li>\u6839\u64da\u5b89\u88dd\u5411\u5c0e\u9032\u884c\u5b89\u88dd\uff0c\u4e26\u8a2d\u7f6e root \u7528\u6236\u7684\u5bc6\u78bc\u3002<\/li>\n<li>\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0c\u555f\u52d5 MySQL \u670d\u52d9\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e9%80%a3%e6%8e%a5%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-WcRjtoUrKR\">3. \u9023\u63a5\u5230\u6578\u64da\u5eab<\/h2>\n<p>\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u547d\u4ee4\u884c\u6216\u5716\u5f62\u754c\u9762\u5de5\u5177\uff08\u5982 MySQL Workbench\uff09\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u547d\u4ee4\u884c\u9023\u63a5\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>mysql -u root -p<\/code><\/pre>\n<p>\u8f38\u5165\u5bc6\u78bc\u5f8c\uff0c\u60a8\u5c07\u9032\u5165 MySQL \u547d\u4ee4\u884c\u754c\u9762\u3002<\/p>\n<h2 id=\"4-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-WcRjtoUrKR\">4. \u5275\u5efa\u6578\u64da\u5eab<\/h2>\n<p>\u9023\u63a5\u5230\u6578\u64da\u5eab\u5f8c\uff0c\u60a8\u53ef\u4ee5\u958b\u59cb\u5275\u5efa\u6578\u64da\u5eab\u3002\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u5275\u5efa\u4e00\u500b\u540d\u70ba `my_database` \u7684\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>CREATE DATABASE my_database;<\/code><\/pre>\n<p>\u5275\u5efa\u6210\u529f\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u6240\u6709\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>SHOW DATABASES;<\/code><\/pre>\n<h2 id=\"5-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e8%a1%a8-WcRjtoUrKR\">5. \u5275\u5efa\u6578\u64da\u8868<\/h2>\n<p>\u6578\u64da\u5eab\u5275\u5efa\u5b8c\u6210\u5f8c\uff0c\u63a5\u4e0b\u4f86\u9700\u8981\u5275\u5efa\u6578\u64da\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u7528\u6236\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>USE my_database;\n\nCREATE 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\u6bb5\u4ee3\u78bc\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba `users` \u7684\u8868\uff0c\u5305\u542b\u7528\u6236 ID\u3001\u7528\u6236\u540d\u3001\u96fb\u5b50\u90f5\u4ef6\u548c\u5275\u5efa\u6642\u9593\u7b49\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"6-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-WcRjtoUrKR\">6. \u63d2\u5165\u6578\u64da<\/h2>\n<p>\u6578\u64da\u8868\u5275\u5efa\u5b8c\u6210\u5f8c\uff0c\u60a8\u53ef\u4ee5\u958b\u59cb\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>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u8868\u4e2d\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>SELECT * FROM users;<\/code><\/pre>\n<h2 id=\"7-%e6%9b%b4%e6%96%b0%e5%92%8c%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-WcRjtoUrKR\">7. \u66f4\u65b0\u548c\u522a\u9664\u6578\u64da<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u66f4\u65b0\u6216\u522a\u9664\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE users SET email = 'john_doe@example.com' WHERE username = 'john_doe';\n\nDELETE FROM users WHERE username = 'john_doe';<\/code><\/pre>\n<h2 id=\"8-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%82%99%e4%bb%bd%e8%88%87%e6%81%a2%e5%be%a9-WcRjtoUrKR\">8. \u6578\u64da\u5eab\u5099\u4efd\u8207\u6062\u5fa9<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u5099\u4efd\u8207\u6062\u5fa9\u662f\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u5099\u4efd\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>mysqldump -u root -p my_database &gt; my_database_backup.sql<\/code><\/pre>\n<p>\u8981\u6062\u5fa9\u6578\u64da\u5eab\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>mysql -u root -p my_database &lt; my_database_backup.sql<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WcRjtoUrKR\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5f9e\u96f6\u958b\u59cb\u5efa\u7acb SQL \u6578\u64da\u5eab\u7684\u5168\u904e\u7a0b\uff0c\u5305\u62ec\u5b89\u88dd\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3001\u5275\u5efa\u6578\u64da\u5eab\u548c\u6578\u64da\u8868\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\uff0c\u4ee5\u53ca\u6578\u64da\u5eab\u7684\u5099\u4efd\u8207\u6062\u5fa9\u3002\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u6b65\u9a5f\u5f8c\uff0c\u60a8\u5c07\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c SQL \u6578\u64da\u5eab\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\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\u696d\u52d9\u9700\u6c42\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u8207\u7a69\u5b9a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5f9e\u96f6\u958b\u59cb\u5efa\u7acbSQL\u6578\u64da\u5eab\uff0c\u8a73\u7d30\u89e3\u8aaa\u6bcf\u500b\u6b65\u9a5f\uff0c\u52a9\u4f60\u638c\u63e1\u6578\u64da\u5eab\u8a2d\u8a08\u8207\u7ba1\u7406\u7684\u5168\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-143991","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143991","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=143991"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143991\/revisions"}],"predecessor-version":[{"id":143992,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143991\/revisions\/143992"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=143991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=143991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=143991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}