{"id":138475,"date":"2024-10-31T14:47:19","date_gmt":"2024-10-31T06:47:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138475\/"},"modified":"2024-10-31T14:47:19","modified_gmt":"2024-10-31T06:47:19","slug":"sql-server%e5%89%b5%e5%bb%ba%e8%a1%a8%e6%89%80%e8%a6%81%e7%94%a8%e5%88%b0%e7%9a%84%e4%bb%a3%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138475\/","title":{"rendered":"SQL Server\u5275\u5efa\u8868\u6240\u8981\u7528\u5230\u7684\u4ee3\u78bc"},"content":{"rendered":"<h1 id=\"sql-server%e5%89%b5%e5%bb%ba%e8%a1%a8%e6%89%80%e8%a6%81%e7%94%a8%e5%88%b0%e7%9a%84%e4%bb%a3%e7%a2%bc-wAamuPeAAh\">SQL Server\u5275\u5efa\u8868\u6240\u8981\u7528\u5230\u7684\u4ee3\u78bc<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u8868\u662f\u5b58\u5132\u6578\u64da\u7684\u57fa\u672c\u55ae\u4f4d\u3002SQL Server\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5275\u5efa\u548c\u7ba1\u7406\u8868\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5728SQL Server\u4e2d\u5275\u5efa\u8868\u6240\u9700\u7684\u57fa\u672c\u4ee3\u78bc\u548c\u76f8\u95dc\u6982\u5ff5\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-wAamuPeAAh\">\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u5275\u5efa\u8868\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE \u8868\u540d (\n    \u5217\u540d1 \u6578\u64da\u985e\u578b [\u7d04\u675f\u689d\u4ef6],\n    \u5217\u540d2 \u6578\u64da\u985e\u578b [\u7d04\u675f\u689d\u4ef6],\n    ...\n);<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<strong>\u8868\u540d<\/strong>\u662f\u4f60\u8981\u5275\u5efa\u7684\u8868\u7684\u540d\u7a31\uff0c<strong>\u5217\u540d<\/strong>\u662f\u8868\u4e2d\u6bcf\u4e00\u5217\u7684\u540d\u7a31\uff0c<strong id=\"%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-wAamuPeAAh\">\u6578\u64da\u985e\u578b<\/strong>\u5b9a\u7fa9\u4e86\u8a72\u5217\u53ef\u4ee5\u5b58\u5132\u7684\u6578\u64da\u985e\u578b\uff0c\u800c<strong>\u7d04\u675f\u689d\u4ef6<\/strong>\u5247\u7528\u65bc\u9650\u5236\u5217\u4e2d\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-wAamuPeAAh\">\u6578\u64da\u985e\u578b<\/h2>\n<p>SQL Server\u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>INT<\/strong>\uff1a\u6574\u6578\u985e\u578b\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\u3002<\/li>\n<li><strong>VARCHAR(n)<\/strong>\uff1a\u53ef\u8b8a\u9577\u5ea6\u5b57\u7b26\u4e32\uff0cn\u8868\u793a\u6700\u5927\u5b57\u7b26\u6578\u3002<\/li>\n<li><strong>DATETIME<\/strong>\uff1a\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\u3002<\/li>\n<li><strong>DECIMAL(p, s)<\/strong>\uff1a\u7cbe\u78ba\u5c0f\u6578\uff0cp\u8868\u793a\u7e3d\u4f4d\u6578\uff0cs\u8868\u793a\u5c0f\u6578\u4f4d\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e8%a1%a8%e7%9a%84%e7%a4%ba%e4%be%8b-wAamuPeAAh\">\u5275\u5efa\u8868\u7684\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u7528\u6236\u4fe1\u606f\u8868\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY IDENTITY(1,1),\n    UserName VARCHAR(50) NOT NULL,\n    Email VARCHAR(100) NOT NULL UNIQUE,\n    CreatedAt DATETIME DEFAULT GETDATE()\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff1a<\/p>\n<ul>\n<li><strong>UserID<\/strong>\u662f\u4e3b\u9375\uff0c\u4e26\u4e14\u4f7f\u7528IDENTITY\u5c6c\u6027\u81ea\u52d5\u751f\u6210\u552f\u4e00\u503c\u3002<\/li>\n<li><strong>UserName<\/strong>\u548c<strong>Email<\/strong>\u5217\u8a2d\u7f6e\u70ba\u4e0d\u5141\u8a31\u7a7a\u503c\u3002<\/li>\n<li><strong>Email<\/strong>\u5217\u8a2d\u7f6e\u70ba\u552f\u4e00\uff0c\u4ee5\u9632\u6b62\u91cd\u8907\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u3002<\/li>\n<li><strong>CreatedAt<\/strong>\u5217\u7684\u9ed8\u8a8d\u503c\u70ba\u7576\u524d\u65e5\u671f\u548c\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b7%bb%e5%8a%a0%e7%b4%84%e6%9d%9f%e6%a2%9d%e4%bb%b6-wAamuPeAAh\">\u6dfb\u52a0\u7d04\u675f\u689d\u4ef6<\/h2>\n<p>\u5728\u5275\u5efa\u8868\u6642\uff0c\u53ef\u4ee5\u6dfb\u52a0\u591a\u7a2e\u7d04\u675f\u689d\u4ef6\u4f86\u4fdd\u8b49\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u5e38\u898b\u7684\u7d04\u675f\u689d\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>PRIMARY KEY<\/strong>\uff1a\u4e3b\u9375\u7d04\u675f\uff0c\u78ba\u4fdd\u5217\u4e2d\u7684\u6bcf\u500b\u503c\u90fd\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>FOREIGN KEY<\/strong>\uff1a\u5916\u9375\u7d04\u675f\uff0c\u7528\u65bc\u5efa\u7acb\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002<\/li>\n<li><strong>UNIQUE<\/strong>\uff1a\u552f\u4e00\u7d04\u675f\uff0c\u78ba\u4fdd\u5217\u4e2d\u7684\u6240\u6709\u503c\u90fd\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><strong>CHECK<\/strong>\uff1a\u6aa2\u67e5\u7d04\u675f\uff0c\u78ba\u4fdd\u5217\u4e2d\u7684\u6578\u64da\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bf%ae%e6%94%b9%e5%92%8c%e5%88%aa%e9%99%a4%e8%a1%a8-wAamuPeAAh\">\u4fee\u6539\u548c\u522a\u9664\u8868<\/h2>\n<p>\u5982\u679c\u9700\u8981\u4fee\u6539\u5df2\u5275\u5efa\u7684\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u3002\u4f8b\u5982\uff0c\u6dfb\u52a0\u4e00\u5217\uff1a<\/p>\n<pre><code>ALTER TABLE Users\nADD Age INT;<\/code><\/pre>\n<p>\u8981\u522a\u9664\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528DROP TABLE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DROP TABLE Users;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wAamuPeAAh\">\u7e3d\u7d50<\/h2>\n<p>\u5728SQL Server\u4e2d\u5275\u5efa\u8868\u662f\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u638c\u63e1\u5176\u8a9e\u6cd5\u548c\u4f7f\u7528\u65b9\u6cd5\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5408\u7406\u8a2d\u8a08\u8868\u7d50\u69cb\u548c\u7d04\u675f\u689d\u4ef6\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u4fdd\u8b77\u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5982<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL Server\u5275\u5efa\u8868\u7684\u4ee3\u78bc\uff0c\u5305\u62ec\u57fa\u672c\u8a9e\u6cd5\u548c\u793a\u4f8b\uff0c\u5e6b\u52a9\u60a8\u5feb\u901f\u5efa\u7acb\u6578\u64da\u5eab\u8868\u683c\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-138475","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138475","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=138475"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138475\/revisions"}],"predecessor-version":[{"id":138476,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138475\/revisions\/138476"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}