{"id":186402,"date":"2024-11-11T05:37:18","date_gmt":"2024-11-10T21:37:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186402\/"},"modified":"2024-11-11T05:37:19","modified_gmt":"2024-11-10T21:37:19","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%97%9c%e9%8d%b5%ef%bc%9a%e4%b8%bb%e9%8d%b5%e8%88%87%e5%a4%96%e9%8d%b5%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%b8%bb%e9%8d%b5%e5%92%8c%e5%a4%96%e9%8d%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186402\/","title":{"rendered":"\u6578\u64da\u5eab\u7684\u95dc\u9375\uff1a\u4e3b\u9375\u8207\u5916\u9375\uff08\u6578\u64da\u5eab\u7684\u4e3b\u9375\u548c\u5916\u9375\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%97%9c%e9%8d%b5%ef%bc%9a%e4%b8%bb%e9%8d%b5%e8%88%87%e5%a4%96%e9%8d%b5-tYxjvzwwWV\">\u6578\u64da\u5eab\u7684\u95dc\u9375\uff1a\u4e3b\u9375\u8207\u5916\u9375<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\uff08Primary Key\uff09\u548c\u5916\u9375\uff08Foreign Key\uff09\u662f\u5169\u500b\u81f3\u95dc\u91cd\u8981\u7684\u6982\u5ff5\u3002\u5b83\u5011\u4e0d\u50c5\u6709\u52a9\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9084\u80fd\u5920\u5efa\u7acb\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u4e3b\u9375\u548c\u5916\u9375\u7684\u5b9a\u7fa9\u3001\u529f\u80fd\u53ca\u5176\u5728\u6578\u64da\u5eab\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%b8%bb%e9%8d%b5%e7%9a%84%e5%ae%9a%e7%be%a9%e8%88%87%e5%8a%9f%e8%83%bd-tYxjvzwwWV\">\u4e3b\u9375\u7684\u5b9a\u7fa9\u8207\u529f\u80fd<\/h2>\n<p>\u4e3b\u9375\u662f\u6578\u64da\u5eab\u8868\u4e2d\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u884c\u6578\u64da\u7684\u5b57\u6bb5\u6216\u5b57\u6bb5\u7d44\u5408\u3002\u4e3b\u9375\u7684\u4e3b\u8981\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u552f\u4e00\u6027\uff1a<\/strong>\u4e3b\u9375\u7684\u503c\u5fc5\u9808\u662f\u552f\u4e00\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u540c\u4e00\u8868\u4e2d\u4e0d\u80fd\u6709\u5169\u884c\u64c1\u6709\u76f8\u540c\u7684\u4e3b\u9375\u503c\u3002<\/li>\n<li><strong>\u975e\u7a7a\u6027\uff1a<\/strong>\u4e3b\u9375\u5b57\u6bb5\u4e0d\u80fd\u5305\u542b\u7a7a\u503c\uff08NULL\uff09\uff0c\u6bcf\u4e00\u884c\u6578\u64da\u90fd\u5fc5\u9808\u6709\u4e00\u500b\u6709\u6548\u7684\u4e3b\u9375\u503c\u3002<\/li>\n<li><strong>\u7a69\u5b9a\u6027\uff1a<\/strong>\u4e3b\u9375\u7684\u503c\u61c9\u8a72\u5728\u6578\u64da\u7684\u751f\u547d\u5468\u671f\u5167\u4fdd\u6301\u4e0d\u8b8a\uff0c\u907f\u514d\u983b\u7e41\u4fee\u6539\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u7528\u6236\u8868\u4e2d\uff0c\u4f7f\u7528\u7528\u6236ID\u4f5c\u70ba\u4e3b\u9375\uff0c\u9019\u6a23\u6bcf\u500b\u7528\u6236\u90fd\u53ef\u4ee5\u88ab\u552f\u4e00\u8b58\u5225\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\n    UserName VARCHAR(100),\n    Email VARCHAR(100)\n);<\/code><\/pre>\n<h2 id=\"%e5%a4%96%e9%8d%b5%e7%9a%84%e5%ae%9a%e7%be%a9%e8%88%87%e5%8a%9f%e8%83%bd-tYxjvzwwWV\">\u5916\u9375\u7684\u5b9a\u7fa9\u8207\u529f\u80fd<\/h2>\n<p>\u5916\u9375\u662f\u6307\u5728\u4e00\u500b\u8868\u4e2d\u5f15\u7528\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\u7684\u5b57\u6bb5\u3002\u5916\u9375\u7684\u4e3b\u8981\u529f\u80fd\u662f\u5efa\u7acb\u8868\u4e4b\u9593\u7684\u95dc\u806f\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u53c3\u7167\u5b8c\u6574\u6027\u3002\u5916\u9375\u7684\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u53c3\u7167\u5b8c\u6574\u6027\uff1a<\/strong>\u5916\u9375\u7684\u503c\u5fc5\u9808\u5b58\u5728\u65bc\u88ab\u5f15\u7528\u7684\u4e3b\u9375\u8868\u4e2d\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u51fa\u73fe\u5b64\u7acb\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u591a\u5c0d\u4e00\u95dc\u4fc2\uff1a<\/strong>\u4e00\u500b\u5916\u9375\u53ef\u4ee5\u5c0d\u61c9\u5230\u591a\u500b\u4e3b\u9375\uff0c\u9019\u6a23\u53ef\u4ee5\u5be6\u73fe\u591a\u5c0d\u4e00\u7684\u6578\u64da\u95dc\u806f\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u8a02\u55ae\u8868\u4e2d\uff0c\u4f7f\u7528\u7528\u6236ID\u4f5c\u70ba\u5916\u9375\u4f86\u5f15\u7528\u7528\u6236\u8868\u7684\u4e3b\u9375\uff1a<\/p>\n<pre><code>CREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    UserID INT,\n    OrderDate DATE,\n    FOREIGN KEY (UserID) REFERENCES Users(UserID)\n);<\/code><\/pre>\n<h2 id=\"%e4%b8%bb%e9%8d%b5%e8%88%87%e5%a4%96%e9%8d%b5%e7%9a%84%e6%87%89%e7%94%a8-tYxjvzwwWV\">\u4e3b\u9375\u8207\u5916\u9375\u7684\u61c9\u7528<\/h2>\n<p>\u5728\u5be6\u969b\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\u548c\u5916\u9375\u7684\u4f7f\u7528\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u66f4\u597d\u5730\u7d44\u7e54\u548c\u7ba1\u7406\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u61c9\u7528\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u901a\u904e\u4f7f\u7528\u4e3b\u9375\u548c\u5916\u9375\uff0c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u907f\u514d\u51fa\u73fe\u91cd\u8907\u6216\u5b64\u7acb\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u67e5\u8a62\uff1a<\/strong>\u4e3b\u9375\u548c\u5916\u9375\u7684\u95dc\u806f\u4f7f\u5f97\u8907\u96dc\u67e5\u8a62\u8b8a\u5f97\u66f4\u52a0\u9ad8\u6548\uff0c\u901a\u904eJOIN\u64cd\u4f5c\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u591a\u500b\u8868\u4e2d\u6aa2\u7d22\u76f8\u95dc\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u8a2d\u8a08\uff1a<\/strong>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u5408\u7406\u5730\u9078\u64c7\u4e3b\u9375\u548c\u5916\u9375\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-tYxjvzwwWV\">\u7d50\u8ad6<\/h2>\n<p>\u4e3b\u9375\u548c\u5916\u9375\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u5143\u7d20\uff0c\u5b83\u5011\u4e0d\u50c5\u78ba\u4fdd\u4e86\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9084\u4fc3\u9032\u4e86\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002\u7406\u89e3\u9019\u4e9b\u6982\u5ff5\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u4e14\u53ef\u9760\u7684\u6578\u64da\u5eab\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\u9084\u662f\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u638c\u63e1\u4e3b\u9375\u548c\u5916\u9375\u7684\u4f7f\u7528\u90fd\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u66f4\u597d\u5730\u7ba1\u7406\u548c\u5229\u7528\u6578\u64da\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u6578\u64da\u5eab\u4e2d\u7684\u4e3b\u9375\u8207\u5916\u9375\uff0c\u638c\u63e1\u6578\u64da\u95dc\u806f\u6027\u8207\u5b8c\u6574\u6027\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u8207\u6e96\u78ba\u6027\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-186402","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186402","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=186402"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186402\/revisions"}],"predecessor-version":[{"id":186403,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186402\/revisions\/186403"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}