{"id":1674,"date":"2026-03-27T07:12:07","date_gmt":"2026-03-27T07:12:07","guid":{"rendered":"https:\/\/www.go-diagram.com\/tw\/self-referencing-entities-recursive-relationships-erd\/"},"modified":"2026-03-27T07:12:07","modified_gmt":"2026-03-27T07:12:07","slug":"self-referencing-entities-recursive-relationships-erd","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/tw\/self-referencing-entities-recursive-relationships-erd\/","title":{"rendered":"ERD\u6307\u5357\uff1a\u81ea\u5f15\u7528\u5be6\u9ad4\uff1a\u7406\u89e3ERD\u4e2d\u7684\u905e\u6b78\u95dc\u4fc2"},"content":{"rendered":"<p>\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u8907\u96dc\u67b6\u69cb\u4e2d\uff0c\u5f88\u5c11\u6709\u6982\u5ff5\u6703\u50cf\u81ea\u5f15\u7528\u5be6\u9ad4\u4e00\u6a23\u5c0d\u5de5\u7a0b\u5e2b\u69cb\u6210\u6311\u6230\u3002\u4e5f\u7a31\u70ba\u905e\u6b78\u95dc\u4fc2\uff0c\u9019\u7a2e\u6a21\u5f0f\u5141\u8a31\u4e00\u500b\u8cc7\u6599\u8868\u9023\u7d50\u5230\u81ea\u8eab\uff0c\u5f9e\u800c\u5728\u5e73\u9762\u67b6\u69cb\u4e2d\u6a21\u64ec\u5c64\u6b21\u7d50\u69cb\u548c\u8907\u96dc\u7d50\u69cb\u3002\u6b63\u78ba\u7406\u89e3\u5982\u4f55\u5be6\u73fe\u6b64\u6a21\u5f0f\uff0c\u5c0d\u65bc\u7dad\u6301\u8cc7\u6599\u5b8c\u6574\u6027\u8207\u67e5\u8a62\u6548\u80fd\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5728\u8a2d\u8a08\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u6642\uff0c\u5927\u591a\u6578\u95dc\u4fc2\u9023\u63a5\u5169\u500b\u4e0d\u540c\u7684\u5be6\u9ad4\u3002\u7136\u800c\uff0c\u73fe\u5be6\u4e16\u754c\u7684\u8cc7\u6599\u7d93\u5e38\u8981\u6c42\u55ae\u4e00\u5be6\u9ad4\u8207\u81ea\u8eab\u985e\u578b\u76f8\u95dc\u806f\u3002\u7d93\u7406\u7ba1\u7406\u54e1\u5de5\uff0c\u5206\u985e\u5305\u542b\u5b50\u5206\u985e\uff0c\u7522\u54c1\u53ef\u4ee5\u662f\u5957\u4ef6\u7684\u4e00\u90e8\u5206\u3002\u9019\u4e9b\u60c5\u5883\u9700\u8981\u4f7f\u7528\u905e\u6b78\u95dc\u4fc2\u3002<\/p>\n<p>\u672c\u6307\u5357\u63a2\u8a0e\u8655\u7406\u81ea\u5f15\u7528\u5be6\u9ad4\u7684\u6a5f\u5236\u3001\u8a2d\u8a08\u6a21\u5f0f\u8207\u6700\u4f73\u5be6\u52d9\u3002\u6211\u5011\u5c07\u7814\u7a76\u5982\u4f55\u5728\u4e0d\u4f9d\u8cf4\u7279\u5b9a\u8edf\u9ad4\u5de5\u5177\u7684\u60c5\u6cc1\u4e0b\u69cb\u5efa\u9019\u4e9b\u95dc\u4fc2\uff0c\u5c08\u6ce8\u65bc\u901a\u7528\u7684\u8cc7\u6599\u5eab\u539f\u5247\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Chalkboard-style educational infographic explaining self-referencing entities and recursive relationships in Entity Relationship Diagrams (ERD), featuring hand-drawn employee hierarchy example with manager_id foreign key looping to employee_id primary key, visual use cases for organizational charts category trees bill of materials and comment threads, key implementation rules including nullable foreign keys indexing and cycle prevention, plus query method comparison between self-joins and recursive CTEs\" decoding=\"async\" src=\"https:\/\/www.go-diagram.com\/wp-content\/uploads\/2026\/03\/self-referencing-entities-erd-chalkboard-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83e\uddd0 \u4ec0\u9ebc\u662f\u81ea\u5f15\u7528\u5be6\u9ad4\uff1f<\/h2>\n<p>\u7576\u8cc7\u6599\u8868\u4e2d\u7684\u5916\u9375\u6307\u5411\u540c\u4e00\u8cc7\u6599\u8868\u7684\u4e3b\u9375\u6642\uff0c\u5c31\u6703\u767c\u751f\u81ea\u5f15\u7528\u5be6\u9ad4\u3002\u9019\u6703\u5f62\u6210\u4e00\u500b\u8ff4\u5708\uff0c\u4f7f\u5f97\u55ae\u4e00\u8cc7\u6599\u8868\u4e2d\u7684\u8cc7\u6599\u5217\u53ef\u4ee5\u5f15\u7528\u8a72\u8cc7\u6599\u8868\u5167\u7684\u5176\u4ed6\u8cc7\u6599\u5217\u3002\u9019\u662f\u6a21\u64ec\u5c64\u6b21\u7d50\u69cb\u8cc7\u6599\u7d50\u69cb\u7684\u57fa\u672c\u6280\u8853\u3002<\/p>\n<p><strong>\u4e3b\u8981\u7279\u5fb5\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u55ae\u4e00\u8cc7\u6599\u8868\uff1a<\/strong> \u95dc\u4fc2\u5b8c\u5168\u5b58\u5728\u65bc\u55ae\u4e00\u8cc7\u6599\u8868\u7d50\u69cb\u4e2d\u3002<\/li>\n<li><strong> \u7236-\u5b50\u9023\u7d50\uff1a<\/strong> \u4e00\u5217\u4f5c\u70ba\u7236\u7bc0\u9ede\uff0c\u53e6\u4e00\u5217\u4f5c\u70ba\u5b50\u7bc0\u9ede\u3002<\/li>\n<li><strong> \u7a7a\u503c\u8655\u7406\uff1a<\/strong> \u5c64\u6b21\u7d50\u69cb\u7684\u6839\u7bc0\u9ede\u901a\u5e38\u5728\u5916\u9375\u6b04\u4f4d\u4e2d\u5177\u6709\u7a7a\u503c\u3002<\/li>\n<li><strong> \u908f\u8f2f\u5faa\u74b0\uff1a<\/strong> \u5728\u8cc7\u6599\u6aa2\u7d22\u904e\u7a0b\u4e2d\uff0c\u5fc5\u9808\u5c0f\u5fc3\u907f\u514d\u7121\u9650\u5faa\u74b0\u3002<\/li>\n<\/ul>\n<h2>\ud83c\udfd7\ufe0f \u905e\u6b78\u95dc\u4fc2\u7684\u6838\u5fc3\u7d44\u6210\u90e8\u5206<\/h2>\n<p>\u8981\u6709\u6548\u5be6\u73fe\u6b64\u95dc\u4fc2\uff0c\u5fc5\u9808\u5c0d\u9f4a\u7279\u5b9a\u7684\u8cc7\u6599\u5eab\u5143\u4ef6\u3002\u8cc7\u6599\u5eab\u7d50\u69cb\u8a2d\u8a08\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u4f9d\u8cf4\u65bc\u4e3b\u9375\u8207\u5916\u9375\u4e4b\u9593\u7684\u4e92\u52d5\u3002<\/p>\n<h3>\ud83d\udd11 \u4e3b\u9375<\/h3>\n<p>\u8cc7\u6599\u8868\u4e2d\u7684\u6bcf\u4e00\u5217\u90fd\u5fc5\u9808\u5177\u6709\u552f\u4e00\u7684\u8b58\u5225\u7b26\u3002\u9019\u662f\u9328\u9ede\u3002\u7576\u4e00\u5217\u5f15\u7528\u53e6\u4e00\u5217\u6642\uff0c\u6703\u900f\u904e\u5132\u5b58\u7236\u5217\u7684\u552f\u4e00\u8b58\u5225\u7b26\u4f86\u5be6\u73fe\u3002<\/p>\n<ul>\n<li>\u5b83\u5fc5\u9808\u7a69\u5b9a\u3002\u66f4\u6539\u4e3b\u9375\u662f\u4e00\u9805\u8907\u96dc\u7684\u64cd\u4f5c\u3002<\/li>\n<li>\u61c9\u5efa\u7acb\u7d22\u5f15\u4ee5\u63d0\u5347\u5feb\u901f\u67e5\u627e\u7684\u6548\u80fd\u3002<\/li>\n<li>\u901a\u5e38\uff0c\u9019\u662f\u4e00\u500b\u81ea\u52d5\u905e\u589e\u7684\u6574\u6578\u6216UUID\u3002<\/li>\n<\/ul>\n<h3>\ud83d\udd17 \u5916\u9375<\/h3>\n<p>\u5916\u9375\u6b04\u4f4d\u8207\u4e3b\u9375\u4f4d\u65bc\u540c\u4e00\u8cc7\u6599\u8868\u4e2d\u3002\u5b83\u5132\u5b58\u7236\u5217\u4e3b\u9375\u7684\u503c\u3002\u6b64\u6b04\u4f4d\u5b9a\u7fa9\u4e86\u95dc\u4fc2\u7684\u65b9\u5411\u3002<\/p>\n<ul>\n<li><strong>\u53ef\u70ba\u7a7a\uff1a<\/strong> \u5728\u5c64\u6b21\u7d50\u69cb\u4e2d\uff0c\u9802\u5c64\u9805\u76ee\uff08\u6839\u7bc0\u9ede\uff09\u6c92\u6709\u7236\u7bc0\u9ede\u3002\u56e0\u6b64\uff0c\u6b64\u6b04\u4f4d\u5fc5\u9808\u5141\u8a31\u7a7a\u503c\u3002<\/li>\n<li><strong>\u7d04\u675f\uff1a<\/strong> \u5916\u9375\u7d04\u675f\u78ba\u4fdd\u5132\u5b58\u7684\u503c\u8207\u540c\u4e00\u8cc7\u6599\u8868\u4e2d\u5df2\u5b58\u5728\u7684\u4e3b\u9375\u76f8\u7b26\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff1a<\/strong> \u96d6\u7136\u4e26\u975e\u7e3d\u662f\u5fc5\u8981\uff0c\u4f46\u5c0d\u5916\u9375\u6b04\u4f4d\u5efa\u7acb\u7d22\u5f15\u53ef\u986f\u8457\u52a0\u5feb\u904d\u6b77\u5c64\u6b21\u7d50\u69cb\u7684\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcd0 \u5728\u5be6\u9ad4\u95dc\u4fc2\u5716\u4e2d\u9032\u884c\u53ef\u8996\u5316<\/h2>\n<p>\u5728\u7e6a\u88fdERD\u4ee5\u8868\u793a\u81ea\u6211\u5f15\u7528\u5be6\u9ad4\u6642\uff0c\u7b26\u865f\u53ef\u80fd\u4e00\u958b\u59cb\u6703\u8b93\u4eba\u611f\u5230\u56f0\u60d1\u3002\u6a19\u6e96\u7684ERD\u5de5\u5177\u6703\u4f7f\u7528\u7279\u5b9a\u7684\u7dda\u689d\u4f86\u8868\u793a\u9023\u63a5\u3002<\/p>\n<p><strong>\u8996\u89ba\u7b26\u865f\u898f\u5247\uff1a<\/strong><\/p>\n<ul>\n<li>\u5be6\u9ad4\u65b9\u6846\u50c5\u7e6a\u88fd\u4e00\u6b21\u3002<\/li>\n<li>\u95dc\u4fc2\u7dda\u5c07\u4e3b\u9375\u8207\u540c\u4e00\u65b9\u6846\u5167\u7684\u5916\u9375\u76f8\u9023\u3002<\/li>\n<li>\u9019\u689d\u7dda\u901a\u5e38\u6703\u8ff4\u5708\u56de\u5230\u5be6\u9ad4\uff0c\u5f62\u6210\u4e00\u500b\u8996\u89ba\u4e0a\u7684\u5713\u5708\u3002<\/li>\n<li>\u57fa\u6578\u6a19\u8a18\uff081:1\u30011:M\uff09\u6703\u653e\u7f6e\u5728\u7dda\u689d\u4e0a\uff0c\u4ee5\u8868\u793a\u7236\u7bc0\u9ede\u53ef\u4ee5\u64c1\u6709\u591a\u5c11\u500b\u5b50\u7bc0\u9ede\u3002<\/li>\n<\/ul>\n<p><strong>\u7bc4\u4f8b\uff1a\u7d44\u7e54\u67b6\u69cb<\/strong><\/p>\n<table border=\"1\" cellpadding=\"5\" cellspacing=\"0\">\n<thead>\n<tr>\n<th>\u6982\u5ff5<\/th>\n<th>\u63cf\u8ff0<\/th>\n<th>ERD\u7b26\u865f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u54e1\u5de5<\/td>\n<td>\u88ab\u5efa\u6a21\u7684\u5be6\u9ad4<\/td>\n<td>\u6a19\u7c64\u70ba\u300c\u54e1\u5de5\u300d\u7684\u65b9\u6846<\/td>\n<\/tr>\n<tr>\n<td>\u7d93\u7406<\/td>\n<td>\u5f15\u7528\u540c\u4e00\u5f35\u8868\u683c\u7684\u89d2\u8272<\/td>\n<td>\u5f9e\u7d93\u7406ID\u5230\u54e1\u5de5ID\u7684\u7dda\u689d<\/td>\n<\/tr>\n<tr>\n<td>\u5831\u544a\u95dc\u4fc2<\/td>\n<td>\u905e\u6b78\u95dc\u4fc2<\/td>\n<td>\u8ff4\u5708\u7bad\u982d<\/td>\n<\/tr>\n<tr>\n<td>\u6839\u7bc0\u9ede<\/td>\n<td>\u57f7\u884c\u9577\u6216\u6700\u9ad8\u5c64\u4e3b\u7ba1<\/td>\n<td>\u7d93\u7406ID\u70ba\u7a7a\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\ud83c\udf33 \u905e\u6b78\u8cc7\u6599\u7684\u5e38\u898b\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u905e\u6b78\u95dc\u4fc2\u4e26\u975e\u7d14\u7406\u8ad6\uff1b\u5b83\u5011\u5728\u8cc7\u6599\u5efa\u6a21\u4e2d\u89e3\u6c7a\u5be6\u969b\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u6b64\u6a21\u5f0f\u6700\u5e38\u898b\u7684\u61c9\u7528\u60c5\u5883\u3002<\/p>\n<h3>1\ufe0f\u20e3 \u7d44\u7e54\u5c64\u7d1a\u7d50\u69cb<\/h3>\n<p>\u6bcf\u5bb6\u516c\u53f8\u90fd\u6709\u5176\u7d50\u69cb\u3002\u54e1\u5de5\u5411\u7d93\u7406\u5831\u544a\uff0c\u7d93\u7406\u5411\u4e3b\u7ba1\u5831\u544a\uff0c\u4e3b\u7ba1\u5411\u526f\u7e3d\u88c1\u5831\u544a\u3002\u9019\u689d\u93c8\u662f\u5178\u578b\u7684\u6a39\u72c0\u7d50\u69cb\u3002<\/p>\n<ul>\n<li><strong>\u8cc7\u6599\u6a21\u578b\uff1a<\/strong> \u4e00\u5f35\u547d\u540d\u70ba\u300c\u54e1\u5de5\u300d\u7684\u8868\u683c\u3002<\/li>\n<li><strong> \u6b04\u4f4d\uff1a<\/strong> <code>\u54e1\u5de5\u7de8\u865f<\/code>, <code>\u540d\u7a31<\/code>, <code>\u4e3b\u7ba1\u7de8\u865f<\/code>.<\/li>\n<li><strong>\u908f\u8f2f\uff1a<\/strong> \u9019 <code>\u4e3b\u7ba1\u7de8\u865f<\/code> \u6b04\u4f4d\u53c3\u8003 <code>\u54e1\u5de5\u7de8\u865f<\/code>.<\/li>\n<li><strong>\u512a\u52e2\uff1a<\/strong> \u65b0\u589e\u4e00\u540d\u54e1\u5de5\u53ea\u9700\u63d2\u5165\u4e00\u884c\u8cc7\u6599\u3002\u7121\u9700\u70ba\u6bcf\u500b\u90e8\u9580\u5efa\u7acb\u65b0\u7684\u8cc7\u6599\u8868\u3002<\/li>\n<\/ul>\n<h3>2\ufe0f\u20e3 \u5206\u985e\u6a39<\/h3>\n<p>\u96fb\u5546\u5e73\u53f0\u901a\u5e38\u5c07\u7522\u54c1\u7d44\u7e54\u6210\u5d4c\u5957\u7684\u5206\u985e\u3002\u96fb\u5b50\u7522\u54c1 &gt; \u96fb\u8166 &gt; \u96fb\u8166\u7b46\u96fb\u3002<\/p>\n<ul>\n<li><strong>\u8cc7\u6599\u6a21\u578b\uff1a<\/strong> \u4e00\u5f35\u547d\u540d\u70ba\u300c\u5206\u985e\u300d\u7684\u8cc7\u6599\u8868\u3002<\/li>\n<li><strong>\u6b04\u4f4d\uff1a<\/strong> <code>\u5206\u985e\u7de8\u865f<\/code>, <code>\u540d\u7a31<\/code>, <code>\u7236\u5206\u985e\u7de8\u865f<\/code>.<\/li>\n<li><strong>\u908f\u8f2f\uff1a<\/strong> \u4e00\u500b\u5206\u985e\u53ef\u4ee5\u6709\u7236\u5206\u985e\uff0c\u4e5f\u53ef\u4ee5\u662f\u6839\u5206\u985e\uff08\u7236\u5206\u985e\u7de8\u865f\u70ba\u7a7a\uff09\u3002<\/li>\n<li><strong>\u512a\u52e2\uff1a<\/strong> \u53ef\u4ee5\u9748\u6d3b\u5730\u65b0\u589e\u4efb\u610f\u6578\u91cf\u7684\u5b50\u5206\u985e\uff0c\u800c\u7121\u9700\u66f4\u6539\u8cc7\u6599\u7d50\u69cb\u3002<\/li>\n<\/ul>\n<h3>3\ufe0f\u20e3 \u7269\u6599\u6e05\u55ae\uff08BOM\uff09<\/h3>\n<p>\u88fd\u9020\u901a\u5e38\u9700\u8981\u8907\u96dc\u7684\u96f6\u4ef6\u6e05\u55ae\u3002\u4e00\u8f1b\u6c7d\u8eca\u7531\u5f15\u64ce\u7d44\u6210\uff0c\u800c\u5f15\u64ce\u53c8\u7531\u6d3b\u585e\u7d44\u6210\u3002\u6709\u6642\u4e00\u500b\u6d3b\u585e\u6703\u662f\u53e6\u4e00\u7a2e\u5f15\u64ce\u985e\u578b\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<ul>\n<li><strong>\u8cc7\u6599\u6a21\u578b\uff1a<\/strong> \u4e00\u5f35\u547d\u540d\u70ba\u300c\u96f6\u4ef6\u300d\u7684\u8868\u683c\u3002<\/li>\n<li><strong>\u6b04\u4f4d\uff1a<\/strong> <code>\u96f6\u4ef6\u7de8\u865f<\/code>, <code>\u63cf\u8ff0<\/code>, <code>\u7d44\u88dd\u7de8\u865f<\/code>.<\/li>\n<li><strong>\u908f\u8f2f\uff1a<\/strong> \u4e00\u500b\u96f6\u4ef6\u672c\u8eab\u4e5f\u53ef\u4ee5\u662f\u7d44\u88dd\u4ef6\uff0c\u5305\u542b\u5176\u4ed6\u96f6\u4ef6\u3002<\/li>\n<li><strong> \u512a\u52e2\uff1a<\/strong> \u652f\u63f4\u591a\u5c64\u7d1a\u7684\u88fd\u9020\u7d50\u69cb\u3002<\/li>\n<\/ul>\n<h3>4\ufe0f\u20e3 \u8a55\u8ad6\u4e32<\/h3>\n<p>\u8ad6\u58c7\u548c\u90e8\u843d\u683c\u5141\u8a31\u4f7f\u7528\u8005\u56de\u8986\u8a55\u8ad6\u3002\u8a55\u8ad6\u53ef\u4ee5\u6709\u4e00\u500b\u7236\u8a55\u8ad6\uff0c\u8868\u793a\u6b63\u5728\u56de\u8986\u8a72\u8a55\u8ad6\uff0c\u4e5f\u53ef\u4ee5\u662f\u7368\u7acb\u7684\u8a55\u8ad6\u3002<\/p>\n<ul>\n<li><strong>\u8cc7\u6599\u6a21\u578b\uff1a<\/strong> \u4e00\u5f35\u547d\u540d\u70ba\u300c\u8a55\u8ad6\u300d\u7684\u8868\u683c\u3002<\/li>\n<li><strong>\u6b04\u4f4d\uff1a<\/strong> <code>\u8a55\u8ad6\u7de8\u865f<\/code>, <code>\u4f7f\u7528\u8005\u7de8\u865f<\/code>, <code>\u5167\u5bb9<\/code>, <code>\u7236\u8a55\u8ad6\u7de8\u865f<\/code>.<\/li>\n<li><strong>\u908f\u8f2f\uff1a<\/strong> \u56de\u8986\u6703\u9023\u7d50\u56de\u539f\u59cb\u8a55\u8ad6\u7684\u7de8\u865f\u3002<\/li>\n<li><strong> \u512a\u52e2\uff1a<\/strong> \u652f\u63f4\u7121\u9650\u5c64\u6b21\u7684\u8a0e\u8ad6\u3002<\/li>\n<\/ul>\n<h2>\u2699\ufe0f \u5be6\u4f5c\u8003\u91cf<\/h2>\n<p>\u8a2d\u8a08\u8cc7\u6599\u7d50\u69cb\u53ea\u662f\u7b2c\u4e00\u6b65\u3002\u78ba\u4fdd\u8cc7\u6599\u5728\u5404\u7a2e\u689d\u4ef6\u4e0b\u90fd\u80fd\u6b63\u78ba\u904b\u4f5c\uff0c\u9700\u8981\u4ed4\u7d30\u898f\u5283\u3002<\/p>\n<h3>\ud83d\uded1 \u9632\u6b62\u5faa\u74b0\u5f15\u7528<\/h3>\n<p>\u905e\u8ff4\u95dc\u4fc2\u4e2d\u7684\u4e00\u500b\u95dc\u9375\u98a8\u96aa\u662f\u5f62\u6210\u5faa\u74b0\u3002\u4f8b\u5982\uff0c\u54e1\u5de5A\u7ba1\u7406\u54e1\u5de5B\uff0c\u800c\u54e1\u5de5B\u53c8\u7ba1\u7406\u54e1\u5de5A\uff0c\u9019\u6703\u9020\u6210\u7121\u9650\u5faa\u74b0\u3002<\/p>\n<ul>\n<li><strong>\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\uff1a<\/strong> \u5728\u63d2\u5165\u6216\u66f4\u65b0\u8cc7\u6599\u6642\uff0c\u61c9\u7528\u7a0b\u5f0f\u61c9\u9a57\u8b49\u5c64\u7d1a\u6df1\u5ea6\uff0c\u4ee5\u78ba\u4fdd\u4e0d\u6703\u5f62\u6210\u5faa\u74b0\u3002<\/li>\n<li><strong>\u8cc7\u6599\u5eab\u7d04\u675f\uff1a<\/strong> \u96d6\u7136\u6a19\u6e96SQL\u7d04\u675f\u7121\u6cd5\u8f15\u6613\u9632\u6b62\u5faa\u74b0\uff08\u56e0\u70ba\u5b83\u5011\u53ea\u6aa2\u67e5\u7576\u524d\u72c0\u614b\uff0c\u800c\u975e\u7d50\u679c\u72c0\u614b\uff09\uff0c\u4f46\u5728\u67d0\u4e9b\u7cfb\u7d71\u4e2d\u53ef\u4ee5\u4f7f\u7528\u89f8\u767c\u5668\u5728\u5beb\u5165\u524d\u9a57\u8b49\u8def\u5f91\u3002<\/li>\n<li><strong>\u6839\u7bc0\u9ede\u8b58\u5225\uff1a<\/strong> \u78ba\u4fdd\u6bcf\u500b\u6709\u6548\u7684\u6a39\u72c0\u7d50\u69cb\u90fd\u6070\u597d\u6709\u4e00\u500b\u6839\u7bc0\u9ede\uff08\u5916\u9375\u70ba\u7a7a\u503c\uff09\u3002<\/li>\n<\/ul>\n<h3>\ud83d\udcc9 \u8655\u7406\u7a7a\u503c<\/h3>\n<p>\u5c64\u7d1a\u7d50\u69cb\u7684\u6839\u662f\u8d77\u9ede\u3002\u5728\u6a19\u6e96\u7684\u905e\u8ff4\u95dc\u4fc2\u4e2d\uff0c\u6839\u8cc7\u6599\u5217\u5728\u5916\u9375\u6b04\u4f4d\u4e2d\u5177\u6709\u7a7a\u503c\u3002<\/p>\n<ul>\n<li><strong>\u67e5\u8a62\uff1a<\/strong> \u82e5\u8981\u627e\u51fa\u6240\u6709\u6839\u7bc0\u9ede\uff0c\u8acb\u67e5\u8a62\u5916\u9375\u70ba\u7a7a\u503c\u7684\u8cc7\u6599\u5217\u3002<\/li>\n<li><strong>\u9810\u8a2d\u503c\uff1a<\/strong> \u5982\u679c\u9810\u8a2d\u503c\u6697\u793a\u4e86\u7236\u7bc0\u9ede\uff0c\u5247\u4e0d\u8981\u70ba\u5916\u9375\u8a2d\u5b9a\u9810\u8a2d\u503c\u30020\u6216-1\u7684\u9810\u8a2d\u503c\u53ef\u80fd\u5177\u6709\u8aa4\u5c0e\u6027\uff0c\u4e26\u5c0e\u81f4\u8cc7\u6599\u5b8c\u6574\u6027\u554f\u984c\u3002<\/li>\n<li><strong>\u5b8c\u6574\u6027\uff1a<\/strong> \u78ba\u4fdd\u8cc7\u6599\u5eab\u5f15\u64ce\u5141\u8a31\u5916\u9375\u6b04\u4f4d\u70ba\u7a7a\u503c\u3002NOT NULL\u7d04\u675f\u5c07\u7834\u58de\u5c64\u7d1a\u6a21\u578b\u3002<\/li>\n<\/ul>\n<h3>\ud83d\udcc8 \u6027\u80fd\u8207\u7d22\u5f15<\/h3>\n<p>\u96a8\u8457\u8cc7\u6599\u91cf\u589e\u52a0\uff0c\u67e5\u8a62\u905e\u8ff4\u7d50\u69cb\u53ef\u80fd\u8b8a\u5f97\u7de9\u6162\u3002\u8981\u627e\u51fa\u7279\u5b9a\u7bc0\u9ede\u7684\u6240\u6709\u5f8c\u4ee3\uff0c\u7c21\u55ae\u7684\u67e5\u8a62\u53ef\u80fd\u9700\u8981\u5927\u91cf\u9023\u63a5\u6216\u905e\u8ff4\u67e5\u8a62\u3002<\/p>\n<p><strong>\u512a\u5316\u7b56\u7565\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u7d22\u5f15\u5916\u9375\uff1a<\/strong> \u5728\u5132\u5b58\u7236\u7bc0\u9ede\u53c3\u8003\u7684\u6b04\u4f4d\u4e0a\u5efa\u7acb\u7d22\u5f15\u3002\u9019\u80fd\u52a0\u5feb\u5c0b\u627e\u5b50\u7bc0\u9ede\u7684\u901f\u5ea6\u3002<\/li>\n<li><strong>\u7269\u5316\u8def\u5f91\uff1a<\/strong> \u67d0\u4e9b\u7cfb\u7d71\u6703\u5c07\u5c64\u7d1a\u7d50\u69cb\u7684\u5b8c\u6574\u8def\u5f91\u5132\u5b58\u5728\u53e6\u4e00\u500b\u6b04\u4f4d\u4e2d\uff08\u4f8b\u5982\u300c\/1\/5\/12\/20\u300d\uff09\u3002\u9019\u80fd\u5be6\u73fe\u66f4\u5feb\u7684\u5b57\u4e32\u904e\u6ffe\uff0c\u4f46\u6bcf\u6b21\u63d2\u5165\u90fd\u9700\u8981\u66f4\u65b0\u3002<\/li>\n<li><strong>\u5de2\u72c0\u96c6\u5408\uff1a<\/strong> \u4e00\u7a2e\u66ff\u4ee3\u6f14\u7b97\u6cd5\uff0c\u4f7f\u7528\u5de6\u503c\u548c\u53f3\u503c\u4f86\u8868\u793a\u6df1\u5ea6\u3002\u9019\u5c0d\u65bc\u6aa2\u7d22\u8f03\u5feb\uff0c\u4f46\u63d2\u5165\u8f03\u6162\u3002<\/li>\n<li><strong>\u67e5\u8a62\u6df1\u5ea6\uff1a<\/strong> \u9650\u5236\u67e5\u8a62\u4e2d\u7684\u905e\u8ff4\u6df1\u5ea6\u3002\u82e5\u672a\u8a2d\u9650\uff0c\u7121\u9650\u5faa\u74b0\u53ef\u80fd\u5c0e\u81f4\u8cc7\u6599\u5eab\u5f15\u64ce\u7576\u6a5f\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udd0d \u67e5\u8a62\u905e\u8ff4\u8cc7\u6599<\/h2>\n<p>\u53d6\u5f97\u5c64\u6b21\u8cc7\u6599\u6bd4\u53d6\u5f97\u5e73\u9762\u8cc7\u6599\u66f4\u8907\u96dc\u3002\u6a19\u6e96\u7684 JOIN \u9069\u7528\u65bc\u55ae\u4e00\u5c64\u7d1a\uff0c\u4f46\u591a\u5c64\u7d1a\u5247\u9700\u8981\u7279\u6b8a\u7684\u908f\u8f2f\u3002<\/p>\n<h3>\ud83d\udd04 \u81ea\u9023\u63a5<\/h3>\n<p>\u6700\u5e38\u898b\u7684\u65b9\u6cd5\u662f\u5c07\u8868\u683c\u8207\u81ea\u8eab\u9032\u884c\u9023\u63a5\u3002\u60a8\u9700\u5c07\u8868\u683c\u5225\u540d\u4e00\u6b21\u8a2d\u70ba\u7236\u7bc0\u9ede\uff0c\u4e00\u6b21\u8a2d\u70ba\u5b50\u7bc0\u9ede\u3002<\/p>\n<ul>\n<li><strong>\u55ae\u4e00\u5c64\u7d1a\uff1a<\/strong> \u5c07\u8868\u683c\u8207\u81ea\u8eab\u9023\u63a5\u4e00\u6b21\uff0c\u4ee5\u53d6\u5f97\u76f4\u63a5\u7684\u7236\u7bc0\u9ede\u3002<\/li>\n<li><strong>\u591a\u5c64\u7d1a\uff1a<\/strong> \u9700\u8981\u591a\u6b21\u9023\u63a5\uff0c\u5f88\u5feb\u5c31\u6703\u8b8a\u5f97\u96e3\u4ee5\u8655\u7406\u3002<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong> \u6240\u9700\u7684\u9023\u63a5\u6b21\u6578\u7b49\u65bc\u5c64\u6b21\u7684\u6df1\u5ea6\u3002<\/li>\n<\/ul>\n<h3>\ud83d\udd01 \u905e\u8ff4\u5e38\u898b\u8868\u683c\u8868\u9054\u5f0f (CTEs)<\/h3>\n<p>\u73fe\u4ee3\u8cc7\u6599\u5eab\u5f15\u64ce\u652f\u63f4\u905e\u8ff4 CTE\u3002\u9019\u5141\u8a31\u67e5\u8a62\u5c0d\u81ea\u8eab\u57f7\u884c UNION ALL\uff0c\u76f4\u5230\u627e\u4e0d\u5230\u66f4\u591a\u8cc7\u6599\u5217\u70ba\u6b62\u3002<\/p>\n<ul>\n<li><strong>\u8d77\u59cb\u6210\u54e1\uff1a<\/strong> \u905e\u8ff4\u7684\u8d77\u59cb\u9ede\uff08\u901a\u5e38\u662f\u6839\u7bc0\u9ede\uff09\u3002<\/li>\n<li><strong>\u905e\u8ff4\u6210\u54e1\uff1a<\/strong> \u67e5\u8a62\u4e2d\u5c07\u7d50\u679c\u91cd\u65b0\u9023\u63a5\u5230\u8868\u683c\u4ee5\u5c0b\u627e\u4e0b\u4e00\u5c64\u7684\u90e8\u5206\u3002<\/li>\n<li><strong>\u7d42\u6b62\uff1a<\/strong> \u7576\u627e\u4e0d\u5230\u66f4\u591a\u76f8\u7b26\u7684\u8cc7\u6599\u5217\u6642\uff0c\u67e5\u8a62\u505c\u6b62\u3002<\/li>\n<li><strong>\u512a\u9ede\uff1a<\/strong> \u7121\u9700\u4e8b\u5148\u77e5\u9053\u5c64\u6b21\u6df1\u5ea6\uff0c\u5373\u53ef\u8655\u7406\u4efb\u4f55\u6df1\u5ea6\u7684\u5c64\u6b21\u7d50\u69cb\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udee1\ufe0f \u8cc7\u6599\u5b8c\u6574\u6027\u8207\u7d04\u675f<\/h2>\n<p>\u7dad\u6301\u81ea\u5f15\u7528\u8868\u683c\u7684\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u522a\u9664\u7236\u7bc0\u9ede\uff0c\u5b50\u7bc0\u9ede\u6703\u600e\u9ebc\u6a23\uff1f<\/p>\n<h3>\ud83d\uddd1\ufe0f \u522a\u9664\u7d1a\u806f<\/h3>\n<p>\u7576\u522a\u9664\u7236\u8cc7\u6599\u5217\u6642\uff0c\u8cc7\u6599\u5eab\u5fc5\u9808\u6c7a\u5b9a\u5982\u4f55\u8655\u7406\u5b50\u8cc7\u6599\u5217\u3002<\/p>\n<ul>\n<li><strong>RESTRICT\uff1a<\/strong> \u5982\u679c\u5b58\u5728\u5b50\u7bc0\u9ede\uff0c\u5247\u963b\u6b62\u7236\u7bc0\u9ede\u7684\u522a\u9664\u3002\u9019\u53ef\u4fdd\u7559\u8cc7\u6599\uff0c\u4f46\u53ef\u80fd\u963b\u7919\u5fc5\u8981\u7684\u6e05\u7406\u5de5\u4f5c\u3002<\/li>\n<li><strong>CASCADE\uff1a<\/strong> \u7576\u7236\u7bc0\u9ede\u88ab\u522a\u9664\u6642\uff0c\u6703\u522a\u9664\u6240\u6709\u5b50\u8cc7\u6599\u5217\u3002\u5728\u6df1\u5c64\u7d1a\u7d50\u69cb\u4e2d\u9019\u5f88\u5371\u96aa\uff0c\u53ef\u80fd\u610f\u5916\u6e05\u9664\u5927\u91cf\u8cc7\u6599\u3002<\/li>\n<li><strong>SET NULL\uff1a<\/strong> \u5c07\u5b50\u7bc0\u9ede\u7684\u5916\u9375\u8a2d\u70ba NULL\uff0c\u4f7f\u5176\u6210\u70ba\u65b0\u7684\u6839\u7bc0\u9ede\u3002\u9019\u901a\u5e38\u662f\u4fdd\u7559\u8cc7\u6599\u7d50\u69cb\u6700\u5b89\u5168\u7684\u9078\u9805\u3002<\/li>\n<li><strong>\u8a2d\u70ba\u9810\u8a2d\u503c\uff1a<\/strong> \u5c07\u5916\u9375\u8a2d\u70ba\u9810\u8a2d\u503c\uff08\u4f8b\u5982\uff0c\u67d0\u500b\u7279\u5b9a\u7684\u5b64\u5152\u985e\u5225\uff09\u3002<\/li>\n<\/ul>\n<h3>\ud83d\udd12 \u66f4\u65b0\u9650\u5236<\/h3>\n<p>\u8b8a\u66f4\u7236\u884c\u7684\u4e3b\u9375\u5177\u6709\u98a8\u96aa\u3002\u5982\u679c\u4f60\u66f4\u6539\u4e86\u7d93\u7406\u7684 ID\uff0c\u5247\u5fc5\u9808\u5728\u6240\u6709\u5f15\u7528\u8a72\u7d93\u7406\u7684\u54e1\u5de5\u8a18\u9304\u4e2d\u66f4\u65b0\u8a72 ID\u3002<\/p>\n<ul>\n<li><strong>\u61c9\u7528\u5c64\uff1a<\/strong> \u4ee5\u4ea4\u6613\u65b9\u5f0f\u8655\u7406\u66f4\u65b0\uff0c\u4ee5\u78ba\u4fdd\u6240\u6709\u53c3\u8003\u9805\u76ee\u540c\u6642\u66f4\u65b0\u3002<\/li>\n<li><strong>\u8cc7\u6599\u5eab\u89f8\u767c\u5668\uff1a<\/strong> \u53ef\u4ee5\u81ea\u52d5\u5316 ID \u8b8a\u66f4\u7684\u50b3\u64ad\uff0c\u4f46\u9019\u6703\u589e\u52a0\u8907\u96dc\u6027\u3002<\/li>\n<li><strong> \u6700\u4f73\u5be6\u52d9\uff1a<\/strong> \u61c9\u76e1\u53ef\u80fd\u907f\u514d\u66f4\u65b0\u905e\u8ff4\u7d50\u69cb\u4e2d\u7684\u4e3b\u9375\u3002\u61c9\u4f7f\u7528\u4ee3\u7406\u9375\uff08\u81ea\u52d5\u905e\u589e\u7684\u6574\u6578\uff09\u800c\u975e\u81ea\u7136\u9375\uff08\u5982\u54e1\u5de5\u4ee3\u78bc\uff09\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udea7 \u6392\u9664\u5e38\u898b\u554f\u984c<\/h2>\n<p>\u5373\u4f7f\u8a2d\u8a08\u8b39\u614e\uff0c\u958b\u767c\u548c\u7dad\u8b77\u904e\u7a0b\u4e2d\u4ecd\u53ef\u80fd\u51fa\u73fe\u554f\u984c\u3002<\/p>\n<h3>\u2753 \u5982\u4f55\u627e\u51fa\u6a39\u7684\u6df1\u5ea6\uff1f<\/h3>\n<p>\u8981\u78ba\u5b9a\u7279\u5b9a\u8cc7\u6599\u5217\u7684\u5c64\u7d1a\uff0c\u5fc5\u9808\u5f9e\u8a72\u8cc7\u6599\u5217\u5411\u4e0a travers \u5230\u6839\u7bc0\u9ede\u3002\u8a08\u7b97\u7d93\u904e\u7684\u8df3\u6578\u3002<\/p>\n<ul>\n<li><strong>\u67e5\u8a62\u65b9\u6cd5\uff1a<\/strong> \u4f7f\u7528\u905e\u8ff4\u67e5\u8a62\uff0c\u96a8\u8457\u5411\u4e0a\u79fb\u52d5\u800c\u8a08\u7b97\u8cc7\u6599\u5217\u6578\u91cf\u3002<\/li>\n<li><strong>\u61c9\u7528\u7a0b\u5f0f\u65b9\u6cd5\uff1a<\/strong> \u5728\u63d2\u5165\u6642\u5c07\u6df1\u5ea6\u5132\u5b58\u5728\u6b04\u4f4d\u4e2d\u3002\u9019\u53ef\u7bc0\u7701\u67e5\u8a62\u6642\u9593\uff0c\u4f46\u9700\u8981\u7dad\u8b77\u3002<\/li>\n<\/ul>\n<h3>\u2753 \u5982\u4f55\u8655\u7406\u5b64\u5152\u7bc0\u9ede\uff1f<\/h3>\n<p>\u5b64\u5152\u7bc0\u9ede\u662f\u6307\u5916\u9375\u6307\u5411\u4e0d\u5b58\u5728\u7684\u7236\u7bc0\u9ede\u7684\u8cc7\u6599\u5217\u3002\u9019\u901a\u5e38\u662f\u7531\u65bc\u932f\u8aa4\u6216\u624b\u52d5\u8cc7\u6599\u8f38\u5165\u932f\u8aa4\u6240\u81f4\u3002<\/p>\n<ul>\n<li><strong>\u9a57\u8b49\uff1a<\/strong> \u5b9a\u671f\u57f7\u884c\u5b8c\u6574\u6027\u6aa2\u67e5\uff0c\u4ee5\u627e\u51fa\u5916\u9375\u8207\u4efb\u4f55\u4e3b\u9375\u90fd\u4e0d\u5339\u914d\u7684\u8cc7\u6599\u5217\u3002<\/li>\n<li><strong>\u5fa9\u539f\uff1a<\/strong> \u6c7a\u5b9a\u8655\u7406\u653f\u7b56\uff1a\u5c07\u5176\u79fb\u81f3\u6839\u985e\u5225\u3001\u522a\u9664\uff0c\u6216\u6a19\u8a18\u4ee5\u4f9b\u5be9\u6838\u3002<\/li>\n<\/ul>\n<h3>\u2753 \u96a8\u6642\u9593\u63a8\u79fb\u7684\u6548\u80fd\u4e0b\u964d<\/h3>\n<p>\u96a8\u8457\u6a39\u7684\u589e\u9577\uff0c\u6383\u63cf\u6574\u500b\u6a39\u7684\u67e5\u8a62\u6703\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u6162\u3002<\/p>\n<ul>\n<li><strong>\u5feb\u53d6\uff1a<\/strong> \u5c07\u61c9\u7528\u7a0b\u5f0f\u8a18\u61b6\u9ad4\u4e2d\u7d93\u5e38\u5b58\u53d6\u7684\u5c64\u7d1a\u7d50\u69cb\u5feb\u53d6\u8d77\u4f86\u3002<\/li>\n<li><strong>\u6b78\u6a94\uff1a<\/strong> \u5c07\u5c64\u7d1a\u7d50\u69cb\u4e2d\u7684\u6b77\u53f2\u6216\u4e0d\u6d3b\u8e8d\u90e8\u5206\u79fb\u81f3\u6b78\u6a94\u8cc7\u6599\u8868\u3002<\/li>\n<li><strong>\u5206\u5272\uff1a<\/strong> \u5982\u679c\u8cc7\u6599\u91cf\u9f90\u5927\uff0c\u8acb\u6839\u64da\u6839\u985e\u5225\u5206\u5272\u8868\u683c\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcdd \u6700\u4f73\u5be6\u52d9\u7e3d\u7d50<\/h2>\n<p>\u70ba\u78ba\u4fdd\u81ea\u6211\u5f15\u7528\u5be6\u9ad4\u7684\u7a69\u5065\u5be6\u4f5c\uff0c\u8acb\u9075\u5faa\u4ee5\u4e0b\u6307\u5f15\u3002<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u4ee3\u7406\u91d1\u9470\uff1a<\/strong> \u512a\u5148\u4f7f\u7528\u81ea\u52d5\u905e\u589e\u7684\u6574\u6578\u800c\u975e\u696d\u52d9\u91d1\u9470\u4f5c\u70ba\u4e3b\u9375\u3002<\/li>\n<li><strong>\u5141\u8a31\u7a7a\u503c\uff1a<\/strong> \u78ba\u4fdd\u5916\u9375\u6b04\u4f4d\u5141\u8a31\u6839\u7bc0\u9ede\u7684\u7a7a\u503c\u3002<\/li>\n<li><strong>\u70ba\u5916\u9375\u5efa\u7acb\u7d22\u5f15\uff1a<\/strong> \u59cb\u7d42\u70ba\u5132\u5b58\u7236\u7bc0\u9ede\u53c3\u8003\u7684\u6b04\u4f4d\u5efa\u7acb\u7d22\u5f15\u3002<\/li>\n<li><strong>\u9a57\u8b49\u5faa\u74b0\uff1a<\/strong> \u5be6\u4f5c\u6aa2\u67e5\u4ee5\u9632\u6b62\u5faa\u74b0\u5f15\u7528\uff08A -&gt; B -&gt; A\uff09\u3002<\/li>\n<li><strong>\u9650\u5236\u905e\u8ff4\uff1a<\/strong> \u9650\u5236\u67e5\u8a62\u4e2d\u7684\u905e\u8ff4\u6df1\u5ea6\uff0c\u4ee5\u9632\u6b62\u5806\u758a\u6ea2\u51fa\u3002<\/li>\n<li><strong>\u8a18\u9304\u8cc7\u6599\u7d50\u69cb\uff1a<\/strong> \u5728\u60a8\u7684\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u6587\u4ef6\u4e2d\u660e\u78ba\u6a19\u793a\u54ea\u4e9b\u6b04\u4f4d\u662f\u81ea\u6211\u5f15\u7528\u7684\u3002<\/li>\n<li><strong>\u898f\u5283\u522a\u9664\uff1a<\/strong> \u5b9a\u7fa9\u660e\u78ba\u7684\u898f\u5247\uff0c\u7528\u65bc\u5728\u522a\u9664\u7236\u7bc0\u9ede\u6642\u9032\u884c\u7d1a\u806f\u522a\u9664\u6216\u8a2d\u70ba\u7a7a\u503c\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u6df1\u5ea6\u5c64\u6b21\u7d50\u69cb\uff1a<\/strong> \u4f7f\u7528\u81f3\u5c11 10 \u5c64\u6df1\u5ea6\u6e2c\u8a66\u60a8\u7684\u67e5\u8a62\uff0c\u4ee5\u78ba\u4fdd\u6548\u80fd\u7a69\u5b9a\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udd2e \u672a\u4f86\u8003\u91cf<\/h2>\n<p>\u8cc7\u6599\u5eab\u6280\u8853\u6301\u7e8c\u6f14\u9032\u3002\u5118\u7ba1\u81ea\u6211\u5f15\u7528\u5be6\u9ad4\u7684\u6982\u5ff5\u4fdd\u6301\u4e0d\u8b8a\uff0c\u4f46\u7ba1\u7406\u5b83\u7684\u5de5\u5177\u6b63\u5728\u4e0d\u65b7\u6539\u5584\u3002<\/p>\n<ul>\n<li><strong>\u5716\u8cc7\u6599\u5eab\uff1a<\/strong> \u67d0\u4e9b\u73fe\u4ee3\u7cfb\u7d71\u5c07\u95dc\u4fc2\u8996\u70ba\u4e00\u7b49\u516c\u6c11\u3002\u5b83\u5011\u80fd\u539f\u751f\u8655\u7406\u905e\u8ff4\u8def\u5f91\uff0c\u7121\u9700 SQL \u7684\u8907\u96dc\u6027\u3002<\/li>\n<li><strong>JSON \u652f\u63f4\uff1a<\/strong> \u65b0\u578b\u8cc7\u6599\u5eab\u5f15\u64ce\u5141\u8a31\u5c07\u5c64\u6b21\u7d50\u69cb\u8cc7\u6599\u5132\u5b58\u5728 JSON \u6b04\u4f4d\u4e2d\uff0c\u9019\u53ef\u7c21\u5316\u6df1\u5ea6\u5d4c\u5957\u7d50\u69cb\u7684\u8cc7\u6599\u7d50\u69cb\u8a2d\u8a08\u3002<\/li>\n<li><strong>ORM \u6539\u9032\uff1a<\/strong> \u7269\u4ef6\u95dc\u4fc2\u5c0d\u6620\u5de5\u5177\uff08ORM\uff09\u6b63\u8b8a\u5f97\u66f4\u80fd\u81ea\u52d5\u8655\u7406\u905e\u8ff4\u95dc\u4fc2\uff0c\u5f9e\u800c\u6e1b\u5c11\u91cd\u8907\u7a0b\u5f0f\u78bc\u3002<\/li>\n<\/ul>\n<p>\u5118\u7ba1\u6709\u9019\u4e9b\u9032\u6b65\uff0c\u905e\u8ff4\u95dc\u4fc2\u7684\u6838\u5fc3\u908f\u8f2f\u4ecd\u4fdd\u6301\u4e0d\u8b8a\u3002\u7406\u89e3\u4e3b\u9375\u3001\u5916\u9375\u8207\u8868\u683c\u95dc\u4fc2\u7684\u5e95\u5c64\u6a5f\u5236\uff0c\u5c0d\u4efb\u4f55\u5f9e\u4e8b\u8cc7\u6599\u7d50\u69cb\u7684\u6280\u8853\u5c08\u696d\u4eba\u54e1\u800c\u8a00\u90fd\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u9075\u5faa\u9019\u4e9b\u539f\u5247\uff0c\u60a8\u5c31\u80fd\u5efa\u69cb\u51fa\u8db3\u5920\u9748\u6d3b\u4ee5\u8655\u7406\u8907\u96dc\u5c64\u6b21\u7d50\u69cb\uff0c\u540c\u6642\u4fdd\u6301\u9ad8\u6548\u80fd\u8207\u53ef\u7dad\u8b77\u6027\u7684\u7cfb\u7d71\u3002\u81ea\u6211\u5f15\u7528\u5be6\u9ad4\u662f\u60a8\u8cc7\u6599\u6a21\u578b\u5de5\u5177\u7bb1\u4e2d\u7684\u4e00\u9805\u5f37\u5927\u5de5\u5177\uff0c\u53ea\u8981\u4f7f\u7528\u6642\u7cbe\u78ba\u4e14\u8b39\u614e\u5373\u53ef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u8907\u96dc\u67b6\u69cb\u4e2d\uff0c\u5f88\u5c11\u6709\u6982\u5ff5\u6703\u50cf\u81ea\u5f15\u7528\u5be6\u9ad4\u4e00\u6a23\u5c0d\u5de5\u7a0b&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1675,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"ERD 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