{"id":190476,"date":"2024-11-12T12:54:59","date_gmt":"2024-11-12T04:54:59","guid":{"rendered":"https:\/\/server.hk\/cnblog\/190476\/"},"modified":"2024-11-12T12:55:00","modified_gmt":"2024-11-12T04:55:00","slug":"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-%e6%95%b8%e6%93%9a%e7%82%ba%e4%bb%80%e9%ba%bc%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/190476\/","title":{"rendered":"\u70ba\u4ec0\u9ebc\u9700\u8981\u6578\u64da\u5eab\uff1f (\u6578\u64da\u70ba\u4ec0\u9ebc\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-%e6%95%b8%e6%93%9a%e7%82%ba%e4%bb%80%e9%ba%bc%e6%95%b8%e6%93%9a%e5%ba%ab-EXXgFIsaOa\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6578\u64da\u5eab\uff1f (\u6578\u64da\u70ba\u4ec0\u9ebc\u6578\u64da\u5eab)<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u5b57\u5316\u7684\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u5df2\u6210\u70ba\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u548c\u7db2\u7ad9\u7684\u6838\u5fc3\u7d44\u4ef6\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u90fd\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u5b58\u5132\u5927\u91cf\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u7684\u91cd\u8981\u6027\u53ca\u5176\u5728\u73fe\u4ee3\u5546\u696d\u4e2d\u7684\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-EXXgFIsaOa\">\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<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-EXXgFIsaOa\">\u6578\u64da\u5eab\u7684\u5fc5\u8981\u6027<\/h2>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e7%9a%84%e7%b5%84%e7%b9%94%e8%88%87%e7%ae%a1%e7%90%86-EXXgFIsaOa\">1. \u6578\u64da\u7684\u7d44\u7e54\u8207\u7ba1\u7406<\/h3>\n<p>\u6578\u64da\u5eab\u80fd\u5920\u6709\u6548\u5730\u7d44\u7e54\u548c\u7ba1\u7406\u6578\u64da\uff0c\u4f7f\u5f97\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u5730\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u900f\u904e\u7d50\u69cb\u5316\u7684\u6578\u64da\u5b58\u5132\uff0c\u6578\u64da\u5eab\u80fd\u5920\u63d0\u4f9b\u9ad8\u6548\u7684\u6578\u64da\u6aa2\u7d22\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 SQL \u8a9e\u8a00\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u57f7\u884c\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE age &gt; 18;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u80fd\u5920\u5feb\u901f\u8fd4\u56de\u6240\u6709\u5e74\u9f61\u5927\u65bc 18 \u6b72\u7684\u7528\u6236\u8cc7\u6599\u3002<\/p>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e7%9a%84%e5%ae%89%e5%85%a8%e6%80%a7-EXXgFIsaOa\">2. \u6578\u64da\u7684\u5b89\u5168\u6027<\/h3>\n<p>\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u5c64\u6b21\u7684\u5b89\u5168\u6027\u63aa\u65bd\uff0c\u4ee5\u4fdd\u8b77\u6578\u64da\u4e0d\u88ab\u672a\u7d93\u6388\u6b0a\u7684\u8a2a\u554f\u3002\u901a\u904e\u7528\u6236\u8eab\u4efd\u9a57\u8b49\u548c\u6b0a\u9650\u7ba1\u7406\uff0c\u6578\u64da\u5eab\u80fd\u5920\u78ba\u4fdd\u53ea\u6709\u6388\u6b0a\u7528\u6236\u624d\u80fd\u8a2a\u554f\u654f\u611f\u6578\u64da\u3002\u6b64\u5916\uff0c\u6578\u64da\u5eab\u9084\u652f\u6301\u6578\u64da\u52a0\u5bc6\uff0c\u9032\u4e00\u6b65\u589e\u5f37\u6578\u64da\u7684\u5b89\u5168\u6027\u3002<\/p>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e7%9a%84%e5%ae%8c%e6%95%b4%e6%80%a7%e8%88%87%e4%b8%80%e8%87%b4%e6%80%a7-EXXgFIsaOa\">3. \u6578\u64da\u7684\u5b8c\u6574\u6027\u8207\u4e00\u81f4\u6027<\/h3>\n<p>\u6578\u64da\u5eab\u7cfb\u7d71\u80fd\u5920\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u900f\u904e\u7d04\u675f\u689d\u4ef6\uff08\u5982\u4e3b\u9375\u3001\u5916\u9375\uff09\uff0c\u6578\u64da\u5eab\u80fd\u5920\u9632\u6b62\u4e0d\u6b63\u78ba\u6216\u4e0d\u4e00\u81f4\u7684\u6578\u64da\u9032\u5165\u7cfb\u7d71\u3002\u4f8b\u5982\uff0c\u82e5\u4e00\u500b\u7528\u6236\u7684\u8a02\u55ae\u5fc5\u9808\u8207\u8a72\u7528\u6236\u7684\u8cc7\u6599\u76f8\u5339\u914d\uff0c\u6578\u64da\u5eab\u53ef\u4ee5\u901a\u904e\u5916\u9375\u7d04\u675f\u4f86\u5f37\u5236\u57f7\u884c\u9019\u4e00\u898f\u5247\u3002<\/p>\n<h3 id=\"4-%e6%95%b8%e6%93%9a%e7%9a%84%e5%8f%af%e6%93%b4%e5%b1%95%e6%80%a7-EXXgFIsaOa\">4. \u6578\u64da\u7684\u53ef\u64f4\u5c55\u6027<\/h3>\n<p>\u96a8\u8457\u696d\u52d9\u7684\u589e\u9577\uff0c\u6578\u64da\u91cf\u4e5f\u6703\u96a8\u4e4b\u589e\u52a0\u3002\u6578\u64da\u5eab\u7cfb\u7d71\u901a\u5e38\u5177\u5099\u826f\u597d\u7684\u53ef\u64f4\u5c55\u6027\uff0c\u80fd\u5920\u8f15\u9b06\u5730\u8655\u7406\u5927\u91cf\u6578\u64da\u3002\u7121\u8ad6\u662f\u901a\u904e\u5782\u76f4\u64f4\u5c55\uff08\u589e\u52a0\u786c\u4ef6\u8cc7\u6e90\uff09\u9084\u662f\u6c34\u5e73\u64f4\u5c55\uff08\u589e\u52a0\u66f4\u591a\u4f3a\u670d\u5668\uff09\uff0c\u6578\u64da\u5eab\u90fd\u80fd\u5920\u9069\u61c9\u4e0d\u65b7\u589e\u9577\u7684\u9700\u6c42\u3002<\/p>\n<h3 id=\"5-%e6%95%b8%e6%93%9a%e7%9a%84%e5%82%99%e4%bb%bd%e8%88%87%e6%81%a2%e5%be%a9-EXXgFIsaOa\">5. 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id=\"%e7%b5%90%e8%ab%96-EXXgFIsaOa\">\u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0c\u6578\u64da\u5eab\u5728\u73fe\u4ee3\u5546\u696d\u4e2d\u626e\u6f14\u8457\u4e0d\u53ef\u6216\u7f3a\u7684\u89d2\u8272\u3002\u5b83\u4e0d\u50c5\u80fd\u5920\u6709\u6548\u5730\u7d44\u7e54\u548c\u7ba1\u7406\u6578\u64da\uff0c\u9084\u80fd\u63d0\u4f9b\u5b89\u5168\u6027\u3001\u5b8c\u6574\u6027\u3001\u4e00\u81f4\u6027\u548c\u53ef\u64f4\u5c55\u6027\u7b49\u591a\u7a2e\u512a\u52e2\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u6301\u7e8c\u589e\u9577\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u5c07\u6210\u70ba\u4f01\u696d\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0cServer.HK 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