{"id":187916,"date":"2024-11-11T18:15:19","date_gmt":"2024-11-11T10:15:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187916\/"},"modified":"2024-11-11T18:15:20","modified_gmt":"2024-11-11T10:15:20","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b6%9c%e5%90%88%e8%a9%a6%e9%a1%8c%e5%8f%8a%e7%ad%94%e6%a1%88%e5%85%a8%e8%a7%a3%e6%9e%90-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b6%9c%e5%90%88%e8%a9%a6%e9%a1%8c%e5%8f%8a%e7%ad%94","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187916\/","title":{"rendered":"\u6578\u64da\u5eab\u7d9c\u5408\u8a66\u984c\u53ca\u7b54\u6848\u5168\u89e3\u6790 (\u6578\u64da\u5eab\u7d9c\u5408\u8a66\u984c\u53ca\u7b54\u6848)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b6%9c%e5%90%88%e8%a9%a6%e9%a1%8c%e5%8f%8a%e7%ad%94%e6%a1%88%e5%85%a8%e8%a7%a3%e6%9e%90-pYAKtDlrRp\">\u6578\u64da\u5eab\u7d9c\u5408\u8a66\u984c\u53ca\u7b54\u6848\u5168\u89e3\u6790<\/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\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u7406\u89e3\u548c\u61c9\u7528\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u672c\u6587\u5c07\u91dd\u5c0d\u6578\u64da\u5eab\u7684\u7d9c\u5408\u8a66\u984c\u9032\u884c\u89e3\u6790\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5\u3001\u64cd\u4f5c\u53ca\u5176\u61c9\u7528\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-pYAKtDlrRp\">\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\u985e\u578b\u5305\u62ec\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001PostgreSQL\uff09\u548c\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MongoDB\u3001Cassandra\uff09\u3002<\/p>\n<h3 id=\"%e9%97%9c%e4%bf%82%e5%9e%8b%e6%95%b8%e6%93%9a%e5%ba%ab-pYAKtDlrRp\">\u95dc\u4fc2\u578b\u6578\u64da\u5eab<\/h3>\n<p>\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4f7f\u7528\u8868\u683c\u4f86\u5b58\u5132\u6578\u64da\uff0c\u8868\u683c\u4e4b\u9593\u53ef\u4ee5\u901a\u904e\u9375\uff08Key\uff09\u9032\u884c\u95dc\u806f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684 SQL \u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u5275\u5efa\u4e00\u500b\u540d\u70ba users \u7684\u8868\nCREATE TABLE users (\n    id INT PRIMARY KEY AUTO_INCREMENT,\n    username VARCHAR(50) NOT NULL,\n    password VARCHAR(50) NOT NULL\n);\n\n-- \u63d2\u5165\u6578\u64da\nINSERT INTO users (username, password) VALUES ('user1', 'pass1');\n\n-- \u67e5\u8a62\u6578\u64da\nSELECT * FROM users;\n<\/code><\/pre>\n<h3 id=\"%e9%9d%9e%e9%97%9c%e4%bf%82%e5%9e%8b%e6%95%b8%e6%93%9a%e5%ba%ab-pYAKtDlrRp\">\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab<\/h3>\n<p>\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u5247\u4e0d\u4f7f\u7528\u8868\u683c\u7d50\u69cb\uff0c\u800c\u662f\u4ee5\u6587\u6a94\u3001\u9375\u503c\u5c0d\u6216\u5716\u5f62\u7684\u5f62\u5f0f\u5b58\u5132\u6578\u64da\u3002\u9019\u985e\u6578\u64da\u5eab\u901a\u5e38\u66f4\u5177\u9748\u6d3b\u6027\uff0c\u9069\u5408\u8655\u7406\u5927\u898f\u6a21\u7684\u975e\u7d50\u69cb\u5316\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b6%9c%e5%90%88%e8%a9%a6%e9%a1%8c%e7%a4%ba%e4%be%8b-pYAKtDlrRp\">\u6578\u64da\u5eab\u7d9c\u5408\u8a66\u984c\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u5eab\u7d9c\u5408\u8a66\u984c\u53ca\u5176\u89e3\u6790\uff1a<\/p>\n<h3 id=\"%e8%a9%a6%e9%a1%8c%e4%b8%80%ef%bc%9a%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%bb%e9%8d%b5%e5%92%8c%e5%a4%96%e9%8d%b5%ef%bc%9f-pYAKtDlrRp\">\u8a66\u984c\u4e00\uff1a\u4ec0\u9ebc\u662f\u4e3b\u9375\u548c\u5916\u9375\uff1f<\/h3>\n<p>\u4e3b\u9375\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u6bcf\u4e00\u884c\u6578\u64da\u7684\u5b57\u6bb5\uff0c\u800c\u5916\u9375\u5247\u662f\u7528\u4f86\u5efa\u7acb\u8868\u4e4b\u9593\u95dc\u806f\u7684\u5b57\u6bb5\u3002\u4e3b\u9375\u4e0d\u80fd\u70ba\u7a7a\uff0c\u4e14\u5728\u4e00\u500b\u8868\u4e2d\u5fc5\u9808\u552f\u4e00\uff1b\u5916\u9375\u53ef\u4ee5\u70ba\u7a7a\uff0c\u4e14\u53ef\u4ee5\u91cd\u8907\u3002<\/p>\n<h3 id=\"%e8%a9%a6%e9%a1%8c%e4%ba%8c%ef%bc%9a%e5%a6%82%e4%bd%95%e5%84%aa%e5%8c%96-sql-%e6%9f%a5%e8%a9%a2%ef%bc%9f-pYAKtDlrRp\">\u8a66\u984c\u4e8c\uff1a\u5982\u4f55\u512a\u5316 SQL \u67e5\u8a62\uff1f<\/h3>\n<ul>\n<li>\u4f7f\u7528\u7d22\u5f15\uff1a\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528 SELECT *\uff1a\u53ea\u9078\u64c7\u9700\u8981\u7684\u5b57\u6bb5\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<li>\u4f7f\u7528 JOIN \u800c\u4e0d\u662f\u5b50\u67e5\u8a62\uff1a\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0cJOIN \u7684\u6027\u80fd\u6703\u512a\u65bc\u5b50\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h3 id=\"%e8%a9%a6%e9%a1%8c%e4%b8%89%ef%bc%9a%e4%bb%80%e9%ba%bc%e6%98%af%e6%ad%a3%e8%a6%8f%e5%8c%96%ef%bc%9f-pYAKtDlrRp\">\u8a66\u984c\u4e09\uff1a\u4ec0\u9ebc\u662f\u6b63\u898f\u5316\uff1f<\/h3>\n<p>\u6b63\u898f\u5316\u662f\u5c07\u6578\u64da\u5eab\u8a2d\u8a08\u6210\u591a\u500b\u8868\u683c\u7684\u904e\u7a0b\uff0c\u4ee5\u6e1b\u5c11\u6578\u64da\u5197\u9918\u548c\u4f9d\u8cf4\u6027\u3002\u5e38\u898b\u7684\u6b63\u898f\u5316\u5f62\u5f0f\u5305\u62ec\u7b2c\u4e00\u8303\u5f0f\uff081NF\uff09\u3001\u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09\u548c\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-pYAKtDlrRp\">\u6578\u64da\u5eab\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u6578\u64da\u5eab\u5728\u5404\u884c\u5404\u696d\u4e2d\u90fd\u6709\u5ee3\u6cdb\u7684\u61c9\u7528\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u65bc\uff1a<\/p>\n<ul>\n<li>\u96fb\u5b50\u5546\u52d9\uff1a\u7ba1\u7406\u7522\u54c1\u3001\u8a02\u55ae\u548c\u5ba2\u6236\u4fe1\u606f\u3002<\/li>\n<li>\u793e\u4ea4\u5a92\u9ad4\uff1a\u5b58\u5132\u7528\u6236\u8cc7\u6599\u3001\u5e16\u5b50\u548c\u4e92\u52d5\u8a18\u9304\u3002<\/li>\n<li>\u91d1\u878d\u670d\u52d9\uff1a\u8655\u7406\u4ea4\u6613\u3001\u8cec\u6236\u548c\u5ba2\u6236\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-pYAKtDlrRp\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u64cd\u4f5c\u662f\u73fe\u4ee3\u4fe1\u606f\u6280\u8853\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u901a\u904e\u4e86\u89e3\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5e38\u898b\u8a66\u984c\u53ca\u5176\u61c9\u7528\uff0c\u8b80\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u638c\u63e1\u9019\u4e00\u9818\u57df\u7684\u77e5\u8b58\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u4f7f\u7528 <a href=\"https:\/\/server.hk\">VPS<\/a> \u4f86\u642d\u5efa\u548c\u7ba1\u7406\u6578\u64da\u5eab\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5168\u9762\u89e3\u6790\u6578\u64da\u5eab\u7d9c\u5408\u8a66\u984c\u53ca\u7b54\u6848\uff0c\u5e6b\u52a9\u8003\u751f\u6df1\u5165\u7406\u89e3\u95dc\u9375\u6982\u5ff5\uff0c\u63d0\u5347\u8003\u8a66\u6e96\u5099\u6548\u7387\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-187916","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187916","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=187916"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187916\/revisions"}],"predecessor-version":[{"id":187917,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187916\/revisions\/187917"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}