{"id":166863,"date":"2024-11-05T20:15:20","date_gmt":"2024-11-05T12:15:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166863\/"},"modified":"2024-11-05T20:15:21","modified_gmt":"2024-11-05T12:15:21","slug":"%e4%ba%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e8%99%95%e7%90%86%e7%9a%84%e4%b8%bb%e8%a6%81%e5%91%bd%e4%bb%a4%ef%bc%8c%e8%bc%95%e9%ac%86%e6%93%8d%e6%8e%a7%e6%95%b8%e6%93%9a%e6%b5%81-%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166863\/","title":{"rendered":"\u4e86\u89e3\u6578\u64da\u5eab\u8655\u7406\u7684\u4e3b\u8981\u547d\u4ee4\uff0c\u8f15\u9b06\u64cd\u63a7\u6578\u64da\u6d41 (\u6578\u64da\u5eab\u8655\u7406\u4e3b\u8981\u547d\u4ee4\u6709\u54ea\u4e9b)"},"content":{"rendered":"<h1 id=\"%e4%ba%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e8%99%95%e7%90%86%e7%9a%84%e4%b8%bb%e8%a6%81%e5%91%bd%e4%bb%a4%ef%bc%8c%e8%bc%95%e9%ac%86%e6%93%8d%e6%8e%a7%e6%95%b8%e6%93%9a%e6%b5%81-QILKWpFJKl\">\u4e86\u89e3\u6578\u64da\u5eab\u8655\u7406\u7684\u4e3b\u8981\u547d\u4ee4\uff0c\u8f15\u9b06\u64cd\u63a7\u6578\u64da\u6d41<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u64cd\u4f5c\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7121\u8ad6\u662f\u4f01\u696d\u9084\u662f\u500b\u4eba\uff0c\u638c\u63e1\u6578\u64da\u5eab\u7684\u57fa\u672c\u547d\u4ee4\u90fd\u80fd\u5e6b\u52a9\u6211\u5011\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u6d41\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u6578\u64da\u5eab\u8655\u7406\u7684\u4e3b\u8981\u547d\u4ee4\uff0c\u5e6b\u52a9\u8b80\u8005\u8f15\u9b06\u64cd\u63a7\u6578\u64da\u6d41\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-QILKWpFJKl\">\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u6709\u7d44\u7e54\u7684\u6578\u64da\u96c6\u5408\uff0c\u901a\u5e38\u4ee5\u96fb\u5b50\u65b9\u5f0f\u5b58\u5132\u5728\u8a08\u7b97\u6a5f\u7cfb\u7d71\u4e2d\u3002\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u662f\u7528\u4f86\u5275\u5efa\u3001\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u7684\u8edf\u4ef6\u3002\u5e38\u898b\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5305\u62ec MySQL\u3001PostgreSQL\u3001Oracle \u548c Microsoft SQL Server \u7b49\u3002<\/p>\n<h2 id=\"%e4%b8%bb%e8%a6%81%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e5%91%bd%e4%bb%a4-QILKWpFJKl\">\u4e3b\u8981\u7684\u6578\u64da\u5eab\u547d\u4ee4<\/h2>\n<p>\u6578\u64da\u5eab\u64cd\u4f5c\u4e3b\u8981\u4f9d\u8cf4\u65bc\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff08SQL\uff09\u3002SQL \u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u547d\u4ee4\u4f86\u57f7\u884c\u6578\u64da\u5eab\u7684\u5404\u7a2e\u64cd\u4f5c\uff0c\u9019\u4e9b\u547d\u4ee4\u53ef\u4ee5\u5206\u70ba\u5e7e\u500b\u4e3b\u8981\u985e\u5225\uff1a<\/p>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e5%ae%9a%e7%be%a9%e8%aa%9e%e8%a8%80%ef%bc%88ddl%ef%bc%89-QILKWpFJKl\">1. \u6578\u64da\u5b9a\u7fa9\u8a9e\u8a00\uff08DDL\uff09<\/h3>\n<p>DDL \u7528\u65bc\u5b9a\u7fa9\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u5305\u62ec\u5275\u5efa\u3001\u4fee\u6539\u548c\u522a\u9664\u6578\u64da\u5eab\u53ca\u5176\u8868\u3002\u5e38\u898b\u7684 DDL \u547d\u4ee4\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>CREATE<\/code>\uff1a\u7528\u65bc\u5275\u5efa\u65b0\u7684\u6578\u64da\u5eab\u6216\u8868\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>CREATE TABLE users (\n        id INT PRIMARY KEY,\n        name VARCHAR(100),\n        email VARCHAR(100)\n    );<\/code><\/pre>\n<li><code>ALTER<\/code>\uff1a\u7528\u65bc\u4fee\u6539\u73fe\u6709\u7684\u6578\u64da\u5eab\u6216\u8868\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>ALTER TABLE users ADD COLUMN age INT;<\/code><\/pre>\n<li><code>DROP<\/code>\uff1a\u7528\u65bc\u522a\u9664\u6578\u64da\u5eab\u6216\u8868\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>DROP TABLE users;<\/code><\/pre>\n<\/ul>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e6%93%8d%e4%bd%9c%e8%aa%9e%e8%a8%80%ef%bc%88dml%ef%bc%89-QILKWpFJKl\">2. \u6578\u64da\u64cd\u4f5c\u8a9e\u8a00\uff08DML\uff09<\/h3>\n<p>DML \u7528\u65bc\u64cd\u4f5c\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u5305\u62ec\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u5e38\u898b\u7684 DML \u547d\u4ee4\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>INSERT<\/code>\uff1a\u7528\u65bc\u5411\u8868\u4e2d\u63d2\u5165\u65b0\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>INSERT INTO users (name, email) VALUES ('John Doe', 'john@example.com');<\/code><\/pre>\n<li><code>UPDATE<\/code>\uff1a\u7528\u65bc\u66f4\u65b0\u8868\u4e2d\u7684\u73fe\u6709\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>UPDATE users SET email = 'john.doe@example.com' WHERE id = 1;<\/code><\/pre>\n<li><code>DELETE<\/code>\uff1a\u7528\u65bc\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>DELETE FROM users WHERE id = 1;<\/code><\/pre>\n<\/ul>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e6%9f%a5%e8%a9%a2%e8%aa%9e%e8%a8%80%ef%bc%88dql%ef%bc%89-QILKWpFJKl\">3. \u6578\u64da\u67e5\u8a62\u8a9e\u8a00\uff08DQL\uff09<\/h3>\n<p>DQL \u7528\u65bc\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u6700\u5e38\u7528\u7684\u547d\u4ee4\u662f\uff1a<\/p>\n<ul>\n<li><code>SELECT<\/code>\uff1a\u7528\u65bc\u5f9e\u8868\u4e2d\u6aa2\u7d22\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>SELECT * FROM users;<\/code><\/pre>\n<\/ul>\n<h3 id=\"4-%e6%95%b8%e6%93%9a%e6%8e%a7%e5%88%b6%e8%aa%9e%e8%a8%80%ef%bc%88dcl%ef%bc%89-QILKWpFJKl\">4. \u6578\u64da\u63a7\u5236\u8a9e\u8a00\uff08DCL\uff09<\/h3>\n<p>DCL \u7528\u65bc\u63a7\u5236\u5c0d\u6578\u64da\u5eab\u7684\u8a2a\u554f\u6b0a\u9650\u3002\u5e38\u898b\u7684 DCL \u547d\u4ee4\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>GRANT<\/code>\uff1a\u7528\u65bc\u6388\u4e88\u7528\u6236\u6b0a\u9650\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>GRANT SELECT ON users TO 'username';<\/code><\/pre>\n<li><code>REVOKE<\/code>\uff1a\u7528\u65bc\u64a4\u92b7\u7528\u6236\u6b0a\u9650\u3002\u4f8b\u5982\uff1a<\/li>\n<pre><code>REVOKE SELECT ON users FROM 'username';<\/code><\/pre>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-QILKWpFJKl\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1\u6578\u64da\u5eab\u7684\u4e3b\u8981\u547d\u4ee4\u662f\u6709\u6548\u7ba1\u7406\u6578\u64da\u6d41\u7684\u95dc\u9375\u3002\u7121\u8ad6\u662f\u5275\u5efa\u8868\u3001\u63d2\u5165\u6578\u64da\u9084\u662f\u67e5\u8a62\u4fe1\u606f\uff0c\u9019\u4e9b\u57fa\u672c\u547d\u4ee4\u90fd\u80fd\u5e6b\u52a9\u7528\u6236\u8f15\u9b06\u64cd\u63a7\u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u900f\u904e\u5c08\u696d\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\uff0c\u4f01\u696d\u80fd\u5920\u66f4\u597d\u5730\u7ba1\u7406\u548c\u904b\u7528\u5176\u6578\u64da\u8cc7\u6e90\uff0c\u63d0\u5347\u696d\u52d9\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u6578\u64da\u5eab\u8655\u7406\u7684\u4e3b\u8981\u547d\u4ee4\uff0c\u8f15\u9b06\u64cd\u63a7\u6578\u64da\u6d41\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u8b93\u6578\u64da\u64cd\u4f5c\u8b8a\u5f97\u7c21\u55ae\u6613\u61c2\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-166863","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166863","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=166863"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166863\/revisions"}],"predecessor-version":[{"id":166864,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166863\/revisions\/166864"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}