{"id":180312,"date":"2024-11-09T09:10:18","date_gmt":"2024-11-09T01:10:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180312\/"},"modified":"2024-11-09T09:10:19","modified_gmt":"2024-11-09T01:10:19","slug":"%e8%a8%ad%e8%a8%88%e9%ab%98%e6%95%88%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%ba%94%e5%a4%a7%e5%8e%9f%e5%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180312\/","title":{"rendered":"\u8a2d\u8a08\u9ad8\u6548\u6578\u64da\u5eab\u7684\u4e94\u5927\u539f\u5247"},"content":{"rendered":"

\u8a2d\u8a08\u9ad8\u6548\u6578\u64da\u5eab\u7684\u4e94\u5927\u539f\u5247<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u8a2d\u8a08\u4e00\u500b\u9ad8\u6548\u7684\u6578\u64da\u5eab\u90fd\u80fd\u986f\u8457\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u901f\u5ea6\u548c\u6e96\u78ba\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u8a2d\u8a08\u9ad8\u6548\u6578\u64da\u5eab\u7684\u4e94\u5927\u539f\u5247\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u512a\u5316\u5176\u6578\u64da\u5eab\u67b6\u69cb\u3002<\/p>\n

1. \u6b63\u78ba\u7684\u6578\u64da\u5efa\u6a21<\/h2>\n

\u6578\u64da\u5efa\u6a21\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u57fa\u790e\u3002\u6b63\u78ba\u7684\u6578\u64da\u5efa\u6a21\u80fd\u5920\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u9996\u5148\uff0c\u61c9\u8a72\u6839\u64da\u696d\u52d9\u9700\u6c42\u78ba\u5b9a\u5be6\u9ad4\u53ca\u5176\u5c6c\u6027\uff0c\u7136\u5f8c\u4f7f\u7528ER\u5716\uff08\u5be6\u9ad4\u95dc\u4fc2\u5716\uff09\u4f86\u53ef\u8996\u5316\u6578\u64da\u4e4b\u9593\u7684\u95dc\u4fc2\u3002<\/p>\n

\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\uff0c\u53ef\u4ee5\u8a2d\u8a08\u4ee5\u4e0b\u5be6\u9ad4\uff1a\n- \u7528\u6236\uff08User\uff09\n- \u7522\u54c1\uff08Product\uff09\n- \u8a02\u55ae\uff08Order\uff09\n\n\u9019\u4e9b\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u53ef\u4ee5\u7528ER\u5716\u8868\u793a\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u7406\u89e3\u6578\u64da\u7d50\u69cb\u3002<\/code><\/pre>\n
2. \u6b63\u898f\u5316\u6578\u64da<\/h2>\n
\u6578\u64da\u6b63\u898f\u5316\u662f\u6d88\u9664\u6578\u64da\u5197\u9918\u548c\u63d0\u9ad8\u6578\u64da\u4e00\u81f4\u6027\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u5c07\u6578\u64da\u5206\u89e3\u70ba\u591a\u500b\u8868\u683c\uff0c\u4e26\u4f7f\u7528\u5916\u9375\u4f86\u5efa\u7acb\u95dc\u806f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u6578\u64da\u91cd\u8907\u3002\u6b63\u898f\u5316\u901a\u5e38\u5206\u70ba\u5e7e\u500b\u968e\u6bb5\uff0c\u5f9e\u7b2c\u4e00\u6b63\u898f\u5f62\uff081NF\uff09\u5230\u7b2c\u4e09\u6b63\u898f\u5f62\uff083NF\uff09\u7b49\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5c07\u7528\u6236\u548c\u8a02\u55ae\u4fe1\u606f\u5206\u958b\u5b58\u5132\uff1a\n- \u7528\u6236\u8868\uff08User\uff09\uff1a\u7528\u6236ID\u3001\u59d3\u540d\u3001\u96fb\u5b50\u90f5\u4ef6\n- \u8a02\u55ae\u8868\uff08Order\uff09\uff1a\u8a02\u55aeID\u3001\u7528\u6236ID\u3001\u7522\u54c1ID\u3001\u8a02\u55ae\u65e5\u671f\n\n\u9019\u6a23\u7684\u8a2d\u8a08\u80fd\u5920\u907f\u514d\u5728\u7528\u6236\u4fe1\u606f\u66f4\u65b0\u6642\u51fa\u73fe\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002<\/code><\/pre>\n
3. \u9069\u7576\u7684\u7d22\u5f15<\/h2>\n
\u7d22\u5f15\u662f\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u901f\u5ea6\u7684\u6709\u6548\u5de5\u5177\u3002\u901a\u904e\u5728\u8868\u683c\u7684\u7279\u5b9a\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u3002\u7136\u800c\uff0c\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u6578\u64da\u63d2\u5165\u548c\u66f4\u65b0\u7684\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u67e5\u8a62\u7684\u983b\u7387\u548c\u985e\u578b\u4f86\u5408\u7406\u8a2d\u8a08\u7d22\u5f15\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5c0d\u65bc\u7d93\u5e38\u67e5\u8a62\u7684\u7528\u6236\u96fb\u5b50\u90f5\u4ef6\u5b57\u6bb5\uff0c\u53ef\u4ee5\u5275\u5efa\u7d22\u5f15\uff1a\nCREATE INDEX idx_user_email ON User(email);\n\u9019\u6a23\u5728\u67e5\u8a62\u7528\u6236\u6642\uff0c\u6578\u64da\u5eab\u80fd\u5920\u66f4\u5feb\u5730\u5b9a\u4f4d\u5230\u76f8\u95dc\u8a18\u9304\u3002<\/code><\/pre>\n
4. \u512a\u5316\u67e5\u8a62<\/h2>\n
\u67e5\u8a62\u7684\u6548\u7387\u76f4\u63a5\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u958b\u767c\u8005\u61c9\u8a72\u5b9a\u671f\u6aa2\u67e5\u548c\u512a\u5316SQL\u67e5\u8a62\uff0c\u907f\u514d\u4f7f\u7528\u4e0d\u5fc5\u8981\u7684JOIN\u64cd\u4f5c\u548c\u5b50\u67e5\u8a62\u3002\u4f7f\u7528EXPLAIN\u8a9e\u53e5\u53ef\u4ee5\u5e6b\u52a9\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5f9e\u800c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/p>\n
\u4f8b\u5982\uff0c\u4f7f\u7528EXPLAIN\u4f86\u5206\u6790\u67e5\u8a62\uff1a\nEXPLAIN SELECT * FROM User WHERE email = 'example@example.com';\n\u9019\u6a23\u53ef\u4ee5\u67e5\u770b\u67e5\u8a62\u7684\u57f7\u884c\u8def\u5f91\uff0c\u4e26\u6839\u64da\u7d50\u679c\u9032\u884c\u512a\u5316\u3002<\/code><\/pre>\n
5. \u5b9a\u671f\u5099\u4efd\u548c\u7dad\u8b77<\/h2>\n
\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\u548c\u7a69\u5b9a\u6027\u540c\u6a23\u91cd\u8981\u3002\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u4e1f\u5931\uff0c\u4e26\u78ba\u4fdd\u5728\u7cfb\u7d71\u6545\u969c\u6642\u80fd\u5920\u5feb\u901f\u6062\u5fa9\u3002\u6b64\u5916\uff0c\u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7dad\u8b77\uff0c\u5982\u91cd\u5efa\u7d22\u5f15\u548c\u6e05\u7406\u7121\u7528\u6578\u64da\uff0c\u4e5f\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002<\/p>\n
\u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u9032\u884c\u5099\u4efd\uff1a\nmysqldump -u username -p database_name > backup.sql\n\u9019\u6a23\u53ef\u4ee5\u5c07\u6578\u64da\u5eab\u5c0e\u51fa\u70baSQL\u6587\u4ef6\uff0c\u65b9\u4fbf\u65e5\u5f8c\u6062\u5fa9\u3002<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u9700\u8981\u9075\u5faa\u6b63\u78ba\u7684\u539f\u5247\uff0c\u5305\u62ec\u6b63\u78ba\u7684\u6578\u64da\u5efa\u6a21\u3001\u6578\u64da\u6b63\u898f\u5316\u3001\u9069\u7576\u7684\u7d22\u5f15\u3001\u512a\u5316\u67e5\u8a62\u4ee5\u53ca\u5b9a\u671f\u5099\u4efd\u548c\u7dad\u8b77\u3002\u9019\u4e9b\u539f\u5247\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u4e00\u81f4\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u6216 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u4f86\u652f\u6301\u5176\u696d\u52d9\u904b\u71df\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u8a2d\u8a08\u9ad8\u6548\u6578\u64da\u5eab\u7684\u4e94\u5927\u539f\u5247\uff0c\u63d0\u5347\u6027\u80fd\u3001\u53ef\u64f4\u5c55\u6027\u548c\u6578\u64da\u5b8c\u6574\u6027\uff0c\u52a9\u60a8\u512a\u5316\u6578\u64da\u7ba1\u7406\u7b56\u7565\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-180312","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180312","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=180312"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180312\/revisions"}],"predecessor-version":[{"id":180313,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180312\/revisions\/180313"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180312"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180312"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}