{"id":164273,"date":"2024-11-05T06:29:26","date_gmt":"2024-11-04T22:29:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/164273\/"},"modified":"2024-11-05T06:29:26","modified_gmt":"2024-11-04T22:29:26","slug":"%e9%87%91%e8%9e%8d%e6%a5%ad%e6%95%b8%e6%93%9a%e5%ba%ab%e8%87%aa%e4%b8%bb%e5%89%b5%e6%96%b0%e4%b9%8b%e8%b7%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/164273\/","title":{"rendered":"\u91d1\u878d\u696d\u6578\u64da\u5eab\u81ea\u4e3b\u5275\u65b0\u4e4b\u8def"},"content":{"rendered":"<h1 id=\"%e9%87%91%e8%9e%8d%e6%a5%ad%e6%95%b8%e6%93%9a%e5%ba%ab%e8%87%aa%e4%b8%bb%e5%89%b5%e6%96%b0%e4%b9%8b%e8%b7%af-MLPjAanMkE\">\u91d1\u878d\u696d\u6578\u64da\u5eab\u81ea\u4e3b\u5275\u65b0\u4e4b\u8def<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u5b57\u5316\u7684\u6642\u4ee3\uff0c\u91d1\u878d\u696d\u7684\u6578\u64da\u5eab\u81ea\u4e3b\u5275\u65b0\u5df2\u6210\u70ba\u63d0\u5347\u7af6\u722d\u529b\u548c\u61c9\u5c0d\u5e02\u5834\u8b8a\u5316\u7684\u91cd\u8981\u624b\u6bb5\u3002\u96a8\u8457\u91d1\u878d\u79d1\u6280\u7684\u8fc5\u901f\u767c\u5c55\uff0c\u50b3\u7d71\u91d1\u878d\u6a5f\u69cb\u9762\u81e8\u8457\u4f86\u81ea\u65b0\u8208\u79d1\u6280\u516c\u53f8\u7684\u6311\u6230\uff0c\u9019\u4fc3\u4f7f\u4ed6\u5011\u5fc5\u9808\u5728\u6578\u64da\u7ba1\u7406\u548c\u5206\u6790\u65b9\u9762\u9032\u884c\u5275\u65b0\uff0c\u4ee5\u6eff\u8db3\u5ba2\u6236\u65e5\u76ca\u589e\u9577\u7684\u9700\u6c42\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%87%aa%e4%b8%bb%e5%89%b5%e6%96%b0%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-MLPjAanMkE\">\u6578\u64da\u5eab\u81ea\u4e3b\u5275\u65b0\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u91d1\u878d\u696d\u7684\u6578\u64da\u5eab\u81ea\u4e3b\u5275\u65b0\u4e3b\u8981\u9ad4\u73fe\u5728\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5b89\u5168\u6027\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u6cc4\u9732\u4e8b\u4ef6\u7684\u983b\u7e41\u767c\u751f\uff0c\u91d1\u878d\u6a5f\u69cb\u5fc5\u9808\u52a0\u5f37\u6578\u64da\u5b89\u5168\u63aa\u65bd\uff0c\u78ba\u4fdd\u5ba2\u6236\u4fe1\u606f\u7684\u5b89\u5168\u3002\u81ea\u4e3b\u5275\u65b0\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u53ef\u4ee5\u6839\u64da\u81ea\u8eab\u9700\u6c42\u8a2d\u8a08\u66f4\u70ba\u56b4\u5bc6\u7684\u5b89\u5168\u9632\u8b77\u6a5f\u5236\u3002<\/li>\n<li><strong>\u6578\u64da\u8655\u7406\u6548\u7387\uff1a<\/strong>\u91d1\u878d\u696d\u9700\u8981\u5feb\u901f\u8655\u7406\u5927\u91cf\u4ea4\u6613\u6578\u64da\uff0c\u81ea\u4e3b\u5275\u65b0\u7684\u6578\u64da\u5eab\u80fd\u5920\u91dd\u5c0d\u7279\u5b9a\u696d\u52d9\u5834\u666f\u9032\u884c\u512a\u5316\uff0c\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u3002<\/li>\n<li><strong>\u5408\u898f\u6027\u8981\u6c42\uff1a<\/strong>\u91d1\u878d\u884c\u696d\u53d7\u5230\u56b4\u683c\u7684\u76e3\u7ba1\uff0c\u81ea\u4e3b\u5275\u65b0\u7684\u6578\u64da\u5eab\u53ef\u4ee5\u66f4\u597d\u5730\u6eff\u8db3\u5408\u898f\u6027\u8981\u6c42\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u53ef\u8ffd\u6eaf\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%87%aa%e4%b8%bb%e5%89%b5%e6%96%b0%e7%9a%84%e6%8a%80%e8%a1%93%e8%b7%af%e5%be%91-MLPjAanMkE\">\u81ea\u4e3b\u5275\u65b0\u7684\u6280\u8853\u8def\u5f91<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u81ea\u4e3b\u5275\u65b0\u7684\u904e\u7a0b\u4e2d\uff0c\u91d1\u878d\u6a5f\u69cb\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u6280\u8853\u8def\u5f91\uff1a<\/p>\n<h3 id=\"1-%e9%96%8b%e6%ba%90%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%87%89%e7%94%a8-MLPjAanMkE\">1. \u958b\u6e90\u6578\u64da\u5eab\u7684\u61c9\u7528<\/h3>\n<p>\u8a31\u591a\u91d1\u878d\u6a5f\u69cb\u958b\u59cb\u63a1\u7528\u958b\u6e90\u6578\u64da\u5eab\uff0c\u5982PostgreSQL\u548cMySQL\uff0c\u9019\u4e9b\u6578\u64da\u5eab\u4e0d\u50c5\u6210\u672c\u4f4e\u5ec9\uff0c\u9084\u5177\u5099\u9ad8\u5ea6\u7684\u53ef\u5b9a\u5236\u6027\u3002\u901a\u904e\u5c0d\u958b\u6e90\u6578\u64da\u5eab\u7684\u4e8c\u6b21\u958b\u767c\uff0c\u91d1\u878d\u6a5f\u69cb\u53ef\u4ee5\u6839\u64da\u81ea\u8eab\u9700\u6c42\u9032\u884c\u529f\u80fd\u64f4\u5c55\u548c\u6027\u80fd\u512a\u5316\u3002<\/p>\n<pre><code>-- PostgreSQL\u7bc4\u4f8b\uff1a\u5275\u5efa\u4e00\u500b\u5ba2\u6236\u8cc7\u6599\u8868\nCREATE TABLE customers (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(100),\n    email VARCHAR(100),\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\n<\/code><\/pre>\n<h3 id=\"2-%e9%9b%b2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%95%b4%e5%90%88-MLPjAanMkE\">2. \u96f2\u6578\u64da\u5eab\u7684\u6574\u5408<\/h3>\n<p>\u96a8\u8457\u96f2\u8a08\u7b97\u6280\u8853\u7684\u6210\u719f\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u91d1\u878d\u6a5f\u69cb\u9078\u64c7\u5c07\u6578\u64da\u5eab\u9077\u79fb\u81f3\u96f2\u7aef\u3002\u96f2\u6578\u64da\u5eab\u4e0d\u50c5\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u64f4\u5c55\u6027\uff0c\u9084\u80fd\u964d\u4f4e\u57fa\u790e\u8a2d\u65bd\u7684\u904b\u71df\u6210\u672c\u3002\u91d1\u878d\u6a5f\u69cb\u53ef\u4ee5\u5229\u7528\u96f2\u670d\u52d9\u63d0\u4f9b\u5546\u7684\u5b89\u5168\u63aa\u65bd\uff0c\u9032\u4e00\u6b65\u52a0\u5f37\u6578\u64da\u4fdd\u8b77\u3002<\/p>\n<h3 id=\"3-%e4%ba%ba%e5%b7%a5%e6%99%ba%e8%83%bd%e8%88%87%e5%a4%a7%e6%95%b8%e6%93%9a%e6%8a%80%e8%a1%93%e7%9a%84%e8%9e%8d%e5%90%88-MLPjAanMkE\">3. \u4eba\u5de5\u667a\u80fd\u8207\u5927\u6578\u64da\u6280\u8853\u7684\u878d\u5408<\/h3>\n<p>\u4eba\u5de5\u667a\u80fd\u548c\u5927\u6578\u64da\u6280\u8853\u7684\u7d50\u5408\u4f7f\u5f97\u91d1\u878d\u6a5f\u69cb\u80fd\u5920\u5f9e\u6d77\u91cf\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u50f9\u503c\u7684\u4fe1\u606f\u3002\u901a\u904e\u6a5f\u5668\u5b78\u7fd2\u7b97\u6cd5\uff0c\u91d1\u878d\u6a5f\u69cb\u53ef\u4ee5\u5be6\u73fe\u98a8\u96aa\u9810\u6e2c\u3001\u5ba2\u6236\u884c\u70ba\u5206\u6790\u7b49\u529f\u80fd\uff0c\u5f9e\u800c\u63d0\u5347\u696d\u52d9\u6c7a\u7b56\u7684\u6e96\u78ba\u6027\u3002<\/p>\n<pre><code># Python\u7bc4\u4f8b\uff1a\u4f7f\u7528Pandas\u9032\u884c\u6578\u64da\u5206\u6790\nimport pandas as pd\n\n# \u8b80\u53d6\u5ba2\u6236\u6578\u64da\ndata = pd.read_csv('customers.csv')\n\n# \u8a08\u7b97\u5ba2\u6236\u6578\u91cf\ncustomer_count = data['id'].count()\nprint(f'\u5ba2\u6236\u6578\u91cf: {customer_count}')\n<\/code><\/pre>\n<h2 id=\"%e6%a1%88%e4%be%8b%e5%88%86%e6%9e%90-MLPjAanMkE\">\u6848\u4f8b\u5206\u6790<\/h2>\n<p>\u4ee5\u67d0\u5927\u578b\u9280\u884c\u70ba\u4f8b\uff0c\u8a72\u9280\u884c\u5728\u9762\u5c0d\u6fc0\u70c8\u7684\u5e02\u5834\u7af6\u722d\u6642\uff0c\u6c7a\u5b9a\u81ea\u4e3b\u958b\u767c\u4e00\u5957\u57fa\u65bc\u96f2\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u901a\u904e\u6574\u5408\u958b\u6e90\u6280\u8853\u548c\u4eba\u5de5\u667a\u80fd\u7b97\u6cd5\uff0c\u8a72\u9280\u884c\u6210\u529f\u5be6\u73fe\u4e86\u5ba2\u6236\u6578\u64da\u7684\u5be6\u6642\u5206\u6790\uff0c\u4e26\u80fd\u5920\u6839\u64da\u5ba2\u6236\u7684\u9700\u6c42\u63d0\u4f9b\u500b\u6027\u5316\u7684\u91d1\u878d\u7522\u54c1\u3002\u9019\u4e00\u5275\u65b0\u4e0d\u50c5\u63d0\u5347\u4e86\u5ba2\u6236\u6eff\u610f\u5ea6\uff0c\u9084\u986f\u8457\u63d0\u9ad8\u4e86\u9280\u884c\u7684\u5e02\u5834\u4efd\u984d\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-MLPjAanMkE\">\u7d50\u8ad6<\/h2>\n<p>\u91d1\u878d\u696d\u7684\u6578\u64da\u5eab\u81ea\u4e3b\u5275\u65b0\u662f\u4e00\u500b\u6301\u7e8c\u7684\u904e\u7a0b\uff0c\u96a8\u8457\u6280\u8853\u7684\u9032\u6b65\u548c\u5e02\u5834\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u91d1\u878d\u6a5f\u69cb\u5fc5\u9808\u4e0d\u65b7\u8abf\u6574\u548c\u512a\u5316\u5176\u6578\u64da\u7ba1\u7406\u7b56\u7565\u3002\u901a\u904e\u958b\u6e90\u6280\u8853\u3001\u96f2\u8a08\u7b97\u548c\u4eba\u5de5\u667a\u80fd\u7684\u61c9\u7528\uff0c\u91d1\u878d\u6a5f\u69cb\u80fd\u5920\u5728\u6fc0\u70c8\u7684\u7af6\u722d\u4e2d\u4fdd\u6301\u512a\u52e2\uff0c\u5be6\u73fe\u53ef\u6301\u7e8c\u767c\u5c55\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u91d1\u878d\u696d\u6578\u64da\u5eab\u7684\u81ea\u4e3b\u5275\u65b0\u4e4b\u8def\uff0c\u63ed\u793a\u5982\u4f55\u63d0\u5347\u6578\u64da\u7ba1\u7406\u8207\u5206\u6790\uff0c\u63a8\u52d5\u884c\u696d\u8f49\u578b\u8207\u589e\u9577\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-164273","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164273","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=164273"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164273\/revisions"}],"predecessor-version":[{"id":164274,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164273\/revisions\/164274"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=164273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=164273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=164273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}