{"id":171683,"date":"2024-11-07T04:47:26","date_gmt":"2024-11-06T20:47:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171683\/"},"modified":"2024-11-07T04:47:27","modified_gmt":"2024-11-06T20:47:27","slug":"%e8%bc%95%e9%ac%86%e8%ae%80%e5%8f%96mysql%e6%95%b8%e6%93%9a%ef%bc%8c%e5%84%aa%e5%8c%96%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90%e9%81%8e%e7%a8%8b-%e5%be%9emysql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171683\/","title":{"rendered":"\u8f15\u9b06\u8b80\u53d6mysql\u6578\u64da\uff0c\u512a\u5316\u6578\u64da\u5206\u6790\u904e\u7a0b (\u5f9emysql\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u6578\u64da)"},"content":{"rendered":"<h1 id=\"%e8%bc%95%e9%ac%86%e8%ae%80%e5%8f%96mysql%e6%95%b8%e6%93%9a%ef%bc%8c%e5%84%aa%e5%8c%96%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90%e9%81%8e%e7%a8%8b-IAziGlXBCu\">\u8f15\u9b06\u8b80\u53d6MySQL\u6578\u64da\uff0c\u512a\u5316\u6578\u64da\u5206\u6790\u904e\u7a0b<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5206\u6790\u5df2\u6210\u70ba\u4f01\u696d\u6210\u529f\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002MySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u8f15\u9b06\u8b80\u53d6MySQL\u6578\u64da\uff0c\u4e26\u512a\u5316\u6578\u64da\u5206\u6790\u904e\u7a0b\uff0c\u4ee5\u63d0\u9ad8\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87mysql%ef%bc%9f-IAziGlXBCu\">\u70ba\u4ec0\u9ebc\u9078\u64c7MySQL\uff1f<\/h2>\n<p>MySQL\u4ee5\u5176\u9ad8\u6548\u6027\u3001\u53ef\u9760\u6027\u548c\u9748\u6d3b\u6027\u800c\u805e\u540d\u3002\u5b83\u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4e26\u80fd\u5920\u8655\u7406\u5927\u91cf\u6578\u64da\uff0c\u9019\u4f7f\u5f97\u5b83\u6210\u70ba\u8a31\u591a\u4f01\u696d\u7684\u9996\u9078\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u4f01\u696d\u7cfb\u7d71\uff0cMySQL\u90fd\u80fd\u5920\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e8%ae%80%e5%8f%96mysql%e6%95%b8%e6%93%9a%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-IAziGlXBCu\">\u8b80\u53d6MySQL\u6578\u64da\u7684\u57fa\u672c\u6b65\u9a5f<\/h2>\n<p>\u8981\u5f9eMySQL\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u6578\u64da\uff0c\u9996\u5148\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PHP\u8a9e\u8a00\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\n$servername = \"localhost\";\n$username = \"username\";\n$password = \"password\";\n$dbname = \"database_name\";\n\n\/\/ \u5275\u5efa\u9023\u63a5\n$conn = new mysqli($servername, $username, $password, $dbname);\n\n\/\/ \u6aa2\u67e5\u9023\u63a5\nif ($conn-&gt;connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $conn-&gt;connect_error);\n}\n?&gt;<\/code><\/pre>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u8b80\u53d6\u6578\u64da\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u5c07\u5f9e\u540d\u70ba\u201cusers\u201d\u7684\u8868\u4e2d\u9078\u64c7\u6240\u6709\u8a18\u9304\uff1a<\/p>\n<pre><code>$sql = \"SELECT * FROM users\";\n$result = $conn-&gt;query($sql);\n\nif ($result-&gt;num_rows &gt; 0) {\n    \/\/ \u8f38\u51fa\u6578\u64da\n    while($row = $result-&gt;fetch_assoc()) {\n        echo \"id: \" . $row[\"id\"]. \" - Name: \" . $row[\"name\"]. \"&lt;br&gt;\";\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n$conn-&gt;close();\n?&gt;<\/code><\/pre>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90%e9%81%8e%e7%a8%8b-IAziGlXBCu\">\u512a\u5316\u6578\u64da\u5206\u6790\u904e\u7a0b<\/h2>\n<p>\u5728\u8b80\u53d6\u6578\u64da\u7684\u904e\u7a0b\u4e2d\uff0c\u512a\u5316\u6578\u64da\u5206\u6790\u7684\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u5b57\u6bb5\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u9650\u5236\u67e5\u8a62\u7d50\u679c\uff1a<\/strong>\u4f7f\u7528LIMIT\u8a9e\u53e5\u4f86\u9650\u5236\u8fd4\u56de\u7684\u8a18\u9304\u6578\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u7684\u8ca0\u64d4\u3002<\/li>\n<li><strong>\u9078\u64c7\u6027\u67e5\u8a62\uff1a<\/strong>\u53ea\u9078\u64c7\u9700\u8981\u7684\u5b57\u6bb5\uff0c\u800c\u4e0d\u662f\u4f7f\u7528SELECT *\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u91cf\u3002<\/li>\n<li><strong>\u4f7f\u7528JOIN\u512a\u5316\u67e5\u8a62\uff1a<\/strong>\u5728\u591a\u500b\u8868\u4e4b\u9593\u9032\u884cJOIN\u64cd\u4f5c\u6642\uff0c\u78ba\u4fdd\u4f7f\u7528\u6b63\u78ba\u7684\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90%e5%b7%a5%e5%85%b7%e7%9a%84%e9%81%b8%e6%93%87-IAziGlXBCu\">\u6578\u64da\u5206\u6790\u5de5\u5177\u7684\u9078\u64c7<\/h2>\n<p>\u9664\u4e86\u76f4\u63a5\u5f9eMySQL\u8b80\u53d6\u6578\u64da\u5916\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528\u5404\u7a2e\u6578\u64da\u5206\u6790\u5de5\u5177\u4f86\u9032\u884c\u66f4\u6df1\u5165\u7684\u5206\u6790\u3002\u4f8b\u5982\uff0c\u4f7f\u7528Python\u7684Pandas\u5eab\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9eMySQL\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u6578\u64da\u4e26\u9032\u884c\u5206\u6790\uff1a<\/p>\n<pre><code>import pandas as pd\nimport mysql.connector\n\n# \u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\nconn = mysql.connector.connect(\n    host=\"localhost\",\n    user=\"username\",\n    password=\"password\",\n    database=\"database_name\"\n)\n\n# \u4f7f\u7528Pandas\u8b80\u53d6\u6578\u64da\ndf = pd.read_sql(\"SELECT * FROM users\", conn)\nprint(df)\nconn.close()\n?&gt;<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-IAziGlXBCu\">\u7d50\u8ad6<\/h2>\n<p>\u8f15\u9b06\u8b80\u53d6MySQL\u6578\u64da\u4e26\u512a\u5316\u6578\u64da\u5206\u6790\u904e\u7a0b\u662f\u6bcf\u500b\u6578\u64da\u5206\u6790\u5e2b\u548c\u958b\u767c\u8005\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002\u901a\u904e\u6b63\u78ba\u7684\u9023\u63a5\u65b9\u5f0f\u3001\u6709\u6548\u7684\u67e5\u8a62\u548c\u9069\u7576\u7684\u5de5\u5177\u9078\u64c7\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528PHP\u9084\u662fPython\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u6280\u5de7\u90fd\u80fd\u5e6b\u52a9\u60a8\u5728\u6578\u64da\u5206\u6790\u7684\u9053\u8def\u4e0a\u8d70\u5f97\u66f4\u9060\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u696d\u52d9\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8f15\u9b06\u8b80\u53d6MySQL\u6578\u64da\uff0c\u512a\u5316\u6578\u64da\u5206\u6790\u904e\u7a0b\uff0c\u63d0\u5347\u6548\u7387\uff0c\u52a9\u60a8\u5feb\u901f\u7372\u53d6\u95dc\u9375\u8cc7\u8a0a\uff0c\u505a\u51fa\u660e\u667a\u6c7a\u7b56\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-171683","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171683","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=171683"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171683\/revisions"}],"predecessor-version":[{"id":171684,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171683\/revisions\/171684"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}