{"id":186140,"date":"2024-11-11T03:26:18","date_gmt":"2024-11-10T19:26:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186140\/"},"modified":"2024-11-11T03:26:19","modified_gmt":"2024-11-10T19:26:19","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e8%a8%98%e9%8c%84%e5%ad%98%e5%84%b2%e8%a8%ad%e7%bd%ae%e5%9c%a8%e5%93%aa%e8%a3%a1%ef%bc%9f%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e8%a8%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186140\/","title":{"rendered":"\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u5b58\u5132\u8a2d\u7f6e\u5728\u54ea\u88e1\uff1f\uff08\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u4fdd\u5b58\u5728\u54ea\u88e1\u8a2d\u7f6e\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e8%a8%98%e9%8c%84%e5%ad%98%e5%84%b2%e8%a8%ad%e7%bd%ae%e5%9c%a8%e5%93%aa%e8%a3%a1%ef%bc%9f%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e8%a8%98-wMAPQSQlOg\">\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u5b58\u5132\u8a2d\u7f6e\u5728\u54ea\u88e1\uff1f\uff08\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u4fdd\u5b58\u5728\u54ea\u88e1\u8a2d\u7f6e\uff09<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6578\u64da\u5eab\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u7121\u8ad6\u662f\u7db2\u7ad9\u3001\u79fb\u52d5\u61c9\u7528\u9084\u662f\u4f01\u696d\u7cfb\u7d71\uff0c\u6578\u64da\u5eab\u90fd\u7528\u65bc\u5b58\u5132\u548c\u7ba1\u7406\u5927\u91cf\u7684\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u5b58\u5132\u8a2d\u7f6e\uff0c\u5e6b\u52a9\u8b80\u8005\u7406\u89e3\u6578\u64da\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u88ab\u4fdd\u5b58\u548c\u7ba1\u7406\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-wMAPQSQlOg\">\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\u8868\u683c\u7684\u5f62\u5f0f\u5b58\u5132\u3002\u6bcf\u500b\u8868\u7531\u884c\u548c\u5217\u7d44\u6210\uff0c\u5176\u4e2d\u884c\u4ee3\u8868\u8a18\u9304\uff0c\u5217\u5247\u4ee3\u8868\u5c6c\u6027\u3002\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u8ca0\u8cac\u6578\u64da\u7684\u5b58\u5132\u3001\u6aa2\u7d22\u548c\u7ba1\u7406\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e7%b5%90%e6%a7%8b-wMAPQSQlOg\">\u6578\u64da\u5eab\u8868\u7684\u7d50\u69cb<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u8868\u7684\u7d50\u69cb\u662f\u7531\u6578\u64da\u985e\u578b\u3001\u7d04\u675f\u689d\u4ef6\u548c\u7d22\u5f15\u7b49\u7d44\u6210\u7684\u3002\u4ee5\u4e0b\u662f\u6578\u64da\u5eab\u8868\u7684\u4e00\u4e9b\u57fa\u672c\u7d44\u6210\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><strong>\u5217\uff08Column\uff09<\/strong>\uff1a\u6bcf\u4e00\u5217\u4ee3\u8868\u4e00\u500b\u5c6c\u6027\uff0c\u4f8b\u5982\u7528\u6236\u540d\u3001\u96fb\u5b50\u90f5\u4ef6\u7b49\u3002<\/li>\n<li><strong>\u884c\uff08Row\uff09<\/strong>\uff1a\u6bcf\u4e00\u884c\u4ee3\u8868\u4e00\u689d\u8a18\u9304\uff0c\u5305\u542b\u6240\u6709\u5217\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u4e3b\u9375\uff08Primary Key\uff09<\/strong>\uff1a\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u689d\u8a18\u9304\u7684\u5217\u3002<\/li>\n<li><strong>\u5916\u9375\uff08Foreign Key\uff09<\/strong>\uff1a\u7528\u65bc\u5efa\u7acb\u8868\u4e4b\u9593\u95dc\u806f\u7684\u5217\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a8%98%e9%8c%84%e7%9a%84%e5%ad%98%e5%84%b2%e8%a8%ad%e7%bd%ae-wMAPQSQlOg\">\u8a18\u9304\u7684\u5b58\u5132\u8a2d\u7f6e<\/h2>\n<p>\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u5b58\u5132\u8a2d\u7f6e\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-wMAPQSQlOg\">1. \u6578\u64da\u985e\u578b<\/h3>\n<p>\u6bcf\u4e00\u5217\u7684\u6578\u64da\u985e\u578b\u6c7a\u5b9a\u4e86\u8a72\u5217\u53ef\u4ee5\u5b58\u5132\u7684\u6578\u64da\u985e\u578b\uff0c\u4f8b\u5982\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u4e32\u7b49\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4e0d\u50c5\u80fd\u63d0\u9ad8\u5b58\u5132\u6548\u7387\uff0c\u9084\u80fd\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\n    UserName VARCHAR(100),\n    Email VARCHAR(100)\n);<\/code><\/pre>\n<h3 id=\"2-%e7%b4%84%e6%9d%9f%e6%a2%9d%e4%bb%b6-wMAPQSQlOg\">2. \u7d04\u675f\u689d\u4ef6<\/h3>\n<p>\u7d04\u675f\u689d\u4ef6\u7528\u65bc\u9650\u5236\u6578\u64da\u7684\u8f38\u5165\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u67d0\u4e00\u5217\u70ba\u975e\u7a7a\uff08NOT NULL\uff09\uff0c\u6216\u8a2d\u7f6e\u552f\u4e00\u6027\uff08UNIQUE\uff09\u7d04\u675f\u3002<\/p>\n<pre><code>CREATE TABLE Products (\n    ProductID INT PRIMARY KEY,\n    ProductName VARCHAR(100) NOT NULL,\n    Price DECIMAL(10, 2) CHECK (Price &gt; 0)\n);<\/code><\/pre>\n<h3 id=\"3-%e7%b4%a2%e5%bc%95-wMAPQSQlOg\">3. \u7d22\u5f15<\/h3>\n<p>\u7d22\u5f15\u662f\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u7684\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\u3002\u901a\u904e\u5728\u8868\u7684\u67d0\u4e9b\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<pre><code>CREATE INDEX idx_user_email ON Users (Email);<\/code><\/pre>\n<h2 id=\"%e6%95%b8%e6%93%9a%e7%9a%84%e6%8c%81%e4%b9%85%e5%8c%96%e5%ad%98%e5%84%b2-wMAPQSQlOg\">\u6578\u64da\u7684\u6301\u4e45\u5316\u5b58\u5132<\/h2>\n<p>\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u901a\u5e38\u5b58\u5132\u5728\u78c1\u789f\u4e0a\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u6301\u4e45\u6027\u3002\u7576\u6578\u64da\u88ab\u5beb\u5165\u6578\u64da\u5eab\u6642\uff0cDBMS\u6703\u5c07\u5176\u8f49\u63db\u70ba\u7279\u5b9a\u7684\u683c\u5f0f\u4e26\u5b58\u5132\u5728\u78c1\u789f\u4e2d\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u7cfb\u7d71\u91cd\u555f\u6216\u767c\u751f\u6545\u969c\uff0c\u6578\u64da\u4ecd\u7136\u53ef\u4ee5\u88ab\u6062\u5fa9\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-wMAPQSQlOg\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u5b58\u5132\u8a2d\u7f6e\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u65b9\u9762\u3002\u901a\u904e\u5408\u7406\u7684\u6578\u64da\u985e\u578b\u9078\u64c7\u3001\u7d04\u675f\u689d\u4ef6\u8a2d\u7f6e\u548c\u7d22\u5f15\u4f7f\u7528\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u6578\u64da\u7684\u5b58\u5132\u6548\u7387\u548c\u67e5\u8a62\u6027\u80fd\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u5c0d\u65bc\u958b\u767c\u548c\u7ba1\u7406\u6578\u64da\u5eab\u61c9\u7528\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4ee5\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u6578\u64da\u5eab\u8868\u7684\u8a18\u9304\u5b58\u5132\u8a2d\u7f6e\uff0c\u63a2\u7d22\u5982\u4f55\u914d\u7f6e\u548c\u7ba1\u7406\u6578\u64da\u7684\u4fdd\u5b58\u4f4d\u7f6e\u4ee5\u512a\u5316\u6027\u80fd\u548c\u5b89\u5168\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-186140","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186140","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=186140"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186140\/revisions"}],"predecessor-version":[{"id":186141,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186140\/revisions\/186141"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}