{"id":187338,"date":"2024-11-11T13:26:16","date_gmt":"2024-11-11T05:26:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187338\/"},"modified":"2024-11-11T13:26:17","modified_gmt":"2024-11-11T05:26:17","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%96%e7%a2%bc%e5%85%a8%e6%96%b0%e8%a8%ad%e5%ae%9a%ef%bc%8c%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e9%97%9c%e8%81%af%e6%9b%b4%e9%ab%98%e6%95%88-%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187338\/","title":{"rendered":"\u6578\u64da\u5eab\u5916\u78bc\u5168\u65b0\u8a2d\u5b9a\uff0c\u7dad\u8b77\u6578\u64da\u95dc\u806f\u66f4\u9ad8\u6548 (\u6578\u64da\u5eab\u8a2d\u5b9a\u65b0\u5916\u78bc)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%96%e7%a2%bc%e5%85%a8%e6%96%b0%e8%a8%ad%e5%ae%9a%ef%bc%8c%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e9%97%9c%e8%81%af%e6%9b%b4%e9%ab%98%e6%95%88-PbFnlkorpx\">\u6578\u64da\u5eab\u5916\u78bc\u5168\u65b0\u8a2d\u5b9a\uff0c\u7dad\u8b77\u6578\u64da\u95dc\u806f\u66f4\u9ad8\u6548<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u5916\u78bc\uff08Foreign Key\uff09\u4f5c\u70ba\u6578\u64da\u5eab\u4e2d\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\u548c\u95dc\u806f\u6027\u7684\u91cd\u8981\u5de5\u5177\uff0c\u5176\u8a2d\u5b9a\u65b9\u5f0f\u7684\u6539\u9032\u5c0d\u65bc\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\u5177\u6709\u91cd\u8981\u610f\u7fa9\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u5916\u78bc\u7684\u5168\u65b0\u8a2d\u5b9a\u65b9\u6cd5\uff0c\u4e26\u5206\u6790\u5176\u5728\u7dad\u8b77\u6578\u64da\u95dc\u806f\u65b9\u9762\u7684\u9ad8\u6548\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%a4%96%e7%a2%bc%ef%bc%9f-PbFnlkorpx\">\u4ec0\u9ebc\u662f\u5916\u78bc\uff1f<\/h2>\n<p>\u5916\u78bc\u662f\u4e00\u7a2e\u7d04\u675f\u689d\u4ef6\uff0c\u7528\u65bc\u5728\u5169\u500b\u8868\u4e4b\u9593\u5efa\u7acb\u95dc\u806f\u3002\u5b83\u6307\u5411\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u8a02\u55ae\u7cfb\u7d71\u4e2d\uff0c\u8a02\u55ae\u8868\u4e2d\u7684\u5ba2\u6236ID\u53ef\u4ee5\u4f5c\u70ba\u5916\u78bc\uff0c\u6307\u5411\u5ba2\u6236\u8868\u4e2d\u7684\u4e3b\u9375\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u500b\u8a02\u55ae\u90fd\u5c0d\u61c9\u4e00\u500b\u6709\u6548\u7684\u5ba2\u6236\u3002<\/p>\n<h2 id=\"%e5%a4%96%e7%a2%bc%e7%9a%84%e5%82%b3%e7%b5%b1%e8%a8%ad%e5%ae%9a%e6%96%b9%e6%b3%95-PbFnlkorpx\">\u5916\u78bc\u7684\u50b3\u7d71\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n<p>\u50b3\u7d71\u4e0a\uff0c\u5916\u78bc\u7684\u8a2d\u5b9a\u901a\u5e38\u662f\u5728\u5275\u5efa\u8868\u6642\u9032\u884c\u7684\uff0c\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u5b9a\u7fa9\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE TABLE Orders (\n    OrderID int PRIMARY KEY,\n    CustomerID int,\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID)\n);<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u7c21\u55ae\uff0c\u4f46\u5728\u9762\u5c0d\u8907\u96dc\u7684\u6578\u64da\u95dc\u806f\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\u548c\u7dad\u8b77\u56f0\u96e3\u3002<\/p>\n<h2 id=\"%e5%85%a8%e6%96%b0%e5%a4%96%e7%a2%bc%e8%a8%ad%e5%ae%9a%e6%96%b9%e6%b3%95-PbFnlkorpx\">\u5168\u65b0\u5916\u78bc\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n<p>\u96a8\u8457\u6578\u64da\u5eab\u6280\u8853\u7684\u9032\u6b65\uff0c\u65b0\u7684\u5916\u78bc\u8a2d\u5b9a\u65b9\u6cd5\u61c9\u904b\u800c\u751f\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9084\u6539\u5584\u4e86\u67e5\u8a62\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5168\u65b0\u7684\u5916\u78bc\u8a2d\u5b9a\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u5ef6\u9072\u7d04\u675f\uff08Deferred Constraints\uff09<\/strong>: \u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u9078\u64c7\u5ef6\u9072\u5916\u78bc\u7d04\u675f\u7684\u6aa2\u67e5\uff0c\u76f4\u5230\u4e8b\u52d9\u7d50\u675f\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u6279\u91cf\u63d2\u5165\u6578\u64da\u6642\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u5206\u5340\u8868\uff08Partitioned Tables\uff09<\/strong>: \u5c07\u5927\u578b\u8868\u5206\u5340\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4e26\u4f7f\u5916\u78bc\u7684\u7ba1\u7406\u66f4\u52a0\u9ad8\u6548\u3002\u6bcf\u500b\u5206\u5340\u53ef\u4ee5\u7368\u7acb\u7ba1\u7406\u5916\u78bc\u7d04\u675f\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff08Indexed Foreign Keys\uff09<\/strong>: \u70ba\u5916\u78bc\u5b57\u6bb5\u5275\u5efa\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u806f\u63a5\u64cd\u4f5c\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a4%96%e7%a2%bc%e8%a8%ad%e5%ae%9a%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-PbFnlkorpx\">\u5916\u78bc\u8a2d\u5b9a\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u8a2d\u5b9a\u5916\u78bc\u6642\uff0c\u9075\u5faa\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u5408\u7406\u8a2d\u8a08\u6578\u64da\u6a21\u578b<\/strong>: \u5728\u8a2d\u8a08\u6578\u64da\u6a21\u578b\u6642\uff0c\u61c9\u8003\u616e\u6578\u64da\u4e4b\u9593\u7684\u95dc\u806f\u6027\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5916\u78bc\u7d04\u675f\u3002<\/li>\n<li><strong>\u5b9a\u671f\u6aa2\u67e5\u548c\u512a\u5316<\/strong>: \u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5b9a\u671f\u6aa2\u67e5\u5916\u78bc\u7684\u6027\u80fd\u4e26\u9032\u884c\u512a\u5316\u662f\u5fc5\u8981\u7684\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u985e\u578b<\/strong>: \u78ba\u4fdd\u5916\u78bc\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u8207\u4e3b\u9375\u5b57\u6bb5\u4e00\u81f4\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8f49\u63db\u958b\u92b7\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-PbFnlkorpx\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u5916\u78bc\u7684\u5168\u65b0\u8a2d\u5b9a\u65b9\u6cd5\u70ba\u7dad\u8b77\u6578\u64da\u95dc\u806f\u63d0\u4f9b\u4e86\u66f4\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u6301\u7e8c\u95dc\u6ce8\u6578\u64da\u5eab\u7684\u6700\u4f73\u5be6\u8e10\u5c07\u6709\u52a9\u65bc\u4f01\u696d\u5728\u6578\u64da\u7ba1\u7406\u4e0a\u4fdd\u6301\u7af6\u722d\u512a\u52e2\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5168\u65b0\u8a2d\u5b9a\u7684\u6578\u64da\u5eab\u5916\u78bc\u63d0\u5347\u6578\u64da\u95dc\u806f\u7dad\u8b77\u6548\u7387\uff0c\u7c21\u5316\u7ba1\u7406\u6d41\u7a0b\uff0c\u52a9\u529b\u4f01\u696d\u6578\u64da\u6574\u5408\u8207\u5206\u6790\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-187338","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187338","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=187338"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187338\/revisions"}],"predecessor-version":[{"id":187339,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187338\/revisions\/187339"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}