{"id":137399,"date":"2024-10-31T12:21:25","date_gmt":"2024-10-31T04:21:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/137399\/"},"modified":"2024-10-31T12:21:27","modified_gmt":"2024-10-31T04:21:27","slug":"sql-server-identity%e5%88%97%ef%bc%8c%e7%be%8e%e4%b8%ad%e4%b8%8d%e8%b6%b3%e4%b9%8b%e8%99%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/137399\/","title":{"rendered":"SQL Server identity\u5217\uff0c\u7f8e\u4e2d\u4e0d\u8db3\u4e4b\u8655"},"content":{"rendered":"<h1 id=\"sql-server-identity%e5%88%97%ef%bc%8c%e7%be%8e%e4%b8%ad%e4%b8%8d%e8%b6%b3%e4%b9%8b%e8%99%95-MwyEGtvokS\">SQL Server Identity\u5217\uff0c\u7f8e\u4e2d\u4e0d\u8db3\u4e4b\u8655<\/h1>\n<p>\u5728\u4f7f\u7528SQL Server\u9032\u884c\u6578\u64da\u5eab\u8a2d\u8a08\u6642\uff0cIdentity\u5217\u662f\u4e00\u500b\u5e38\u898b\u7684\u9078\u64c7\u3002\u5b83\u80fd\u5920\u81ea\u52d5\u751f\u6210\u552f\u4e00\u7684\u6578\u5b57\uff0c\u901a\u5e38\u7528\u4f5c\u4e3b\u9375\uff0c\u9019\u4f7f\u5f97\u6578\u64da\u7684\u63d2\u5165\u904e\u7a0b\u8b8a\u5f97\u66f4\u52a0\u7c21\u4fbf\u3002\u7136\u800c\uff0c\u96d6\u7136Identity\u5217\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5b83\u4e5f\u5b58\u5728\u4e00\u4e9b\u4e0d\u8db3\u4e4b\u8655\uff0c\u503c\u5f97\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u52a0\u4ee5\u8003\u616e\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afidentity%e5%88%97%ef%bc%9f-MwyEGtvokS\">\u4ec0\u9ebc\u662fIdentity\u5217\uff1f<\/h2>\n<p>Identity\u5217\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5217\u985e\u578b\uff0c\u5141\u8a31SQL Server\u81ea\u52d5\u70ba\u6bcf\u4e00\u884c\u751f\u6210\u552f\u4e00\u7684\u6574\u6578\u503c\u3002\u9019\u4e9b\u503c\u901a\u5e38\u662f\u905e\u589e\u7684\uff0c\u4e26\u4e14\u53ef\u4ee5\u8a2d\u7f6e\u8d77\u59cb\u503c\u548c\u589e\u91cf\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8a9e\u53e5\u5275\u5efa\u4e86\u4e00\u500b\u5305\u542bIdentity\u5217\u7684\u8868\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT IDENTITY(1,1) PRIMARY KEY,\n    UserName NVARCHAR(50)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cUserID\u5217\u5c07\u81ea\u52d5\u5f9e1\u958b\u59cb\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u884c\u6642\u905e\u589e1\u3002<\/p>\n<h2 id=\"identity%e5%88%97%e7%9a%84%e5%84%aa%e9%bb%9e-MwyEGtvokS\">Identity\u5217\u7684\u512a\u9ede<\/h2>\n<ul>\n<li><strong>\u81ea\u52d5\u751f\u6210\u552f\u4e00\u503c\uff1a<\/strong>\u958b\u767c\u8005\u4e0d\u9700\u8981\u624b\u52d5\u7ba1\u7406\u4e3b\u9375\u7684\u552f\u4e00\u6027\uff0c\u6e1b\u5c11\u4e86\u51fa\u932f\u7684\u6a5f\u6703\u3002<\/li>\n<li><strong>\u7c21\u5316\u63d2\u5165\u64cd\u4f5c\uff1a<\/strong>\u5728\u63d2\u5165\u6578\u64da\u6642\uff0c\u958b\u767c\u8005\u7121\u9700\u63d0\u4f9b\u4e3b\u9375\u503c\uff0c\u9019\u4f7f\u5f97\u63d2\u5165\u64cd\u4f5c\u66f4\u52a0\u7c21\u55ae\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u7531\u65bcIdentity\u5217\u662f\u6574\u6578\u985e\u578b\uff0c\u67e5\u8a62\u6027\u80fd\u901a\u5e38\u8f03\u597d\u3002<\/li>\n<\/ul>\n<h2 id=\"identity%e5%88%97%e7%9a%84%e4%b8%8d%e8%b6%b3%e4%b9%8b%e8%99%95-MwyEGtvokS\">Identity\u5217\u7684\u4e0d\u8db3\u4e4b\u8655<\/h2>\n<p>\u5118\u7ba1Identity\u5217\u6709\u5176\u512a\u52e2\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u6f5b\u5728\u7684\u554f\u984c\uff1a<\/p>\n<h3 id=\"1-%e7%84%a1%e6%b3%95%e9%87%8d%e7%94%a8%e5%b7%b2%e5%88%aa%e9%99%a4%e7%9a%84%e5%80%bc-MwyEGtvokS\">1. \u7121\u6cd5\u91cd\u7528\u5df2\u522a\u9664\u7684\u503c<\/h3>\n<p>\u7576\u4e00\u884c\u6578\u64da\u88ab\u522a\u9664\u5f8c\uff0c\u8a72\u884c\u7684Identity\u503c\u5c07\u4e0d\u6703\u88ab\u91cd\u7528\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u7528\u6236\u7684UserID\u70ba5\uff0c\u7136\u5f8c\u8a72\u7528\u6236\u88ab\u522a\u9664\uff0c\u4e0b\u4e00\u500b\u63d2\u5165\u7684\u7528\u6236\u5c07\u6703\u7372\u5f97UserID\u70ba6\uff0c\u800c\u4e0d\u662f5\u3002\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u7684\u4e0d\u9023\u7e8c\u6027\uff0c\u5c0d\u65bc\u67d0\u4e9b\u61c9\u7528\u5834\u666f\u4f86\u8aaa\uff0c\u9019\u53ef\u80fd\u4e0d\u662f\u7406\u60f3\u7684\u3002<\/p>\n<h3 id=\"2-%e5%8f%af%e8%83%bd%e5%b0%8e%e8%87%b4%e6%95%b8%e6%93%9a%e4%b8%8d%e4%b8%80%e8%87%b4-MwyEGtvokS\">2. \u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4<\/h3>\n<p>\u5728\u9ad8\u4f75\u767c\u74b0\u5883\u4e2d\uff0cIdentity\u5217\u7684\u751f\u6210\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5169\u500b\u7528\u6236\u540c\u6642\u63d2\u5165\u6578\u64da\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u91cd\u8907\u7684\u4e3b\u9375\u503c\uff0c\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/p>\n<h3 id=\"3-%e9%9b%a3%e4%bb%a5%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e9%81%b7%e7%a7%bb-MwyEGtvokS\">3. \u96e3\u4ee5\u9032\u884c\u6578\u64da\u9077\u79fb<\/h3>\n<p>\u5728\u9032\u884c\u6578\u64da\u9077\u79fb\u6642\uff0cIdentity\u5217\u7684\u503c\u53ef\u80fd\u6703\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u7531\u65bcIdentity\u5217\u7684\u81ea\u52d5\u751f\u6210\u7279\u6027\uff0c\u5c07\u6578\u64da\u5f9e\u4e00\u500b\u6578\u64da\u5eab\u9077\u79fb\u5230\u53e6\u4e00\u500b\u6578\u64da\u5eab\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u4e3b\u9375\u885d\u7a81\u3002<\/p>\n<h3 id=\"4-%e4%b8%8d%e6%94%af%e6%8c%81%e8%a4%87%e5%90%88%e4%b8%bb%e9%8d%b5-MwyEGtvokS\">4. \u4e0d\u652f\u6301\u8907\u5408\u4e3b\u9375<\/h3>\n<p>\u5982\u679c\u9700\u8981\u4f7f\u7528\u8907\u5408\u4e3b\u9375\uff0cIdentity\u5217\u5c31\u7121\u6cd5\u6eff\u8db3\u9700\u6c42\u3002\u9019\u610f\u5473\u8457\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u9700\u8981\u5c0b\u627e\u5176\u4ed6\u89e3\u6c7a\u65b9\u6848\u4f86\u751f\u6210\u552f\u4e00\u7684\u4e3b\u9375\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-MwyEGtvokS\">\u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0cSQL Server\u7684Identity\u5217\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u90fd\u662f\u4e00\u500b\u65b9\u4fbf\u7684\u9078\u64c7\uff0c\u4f46\u958b\u767c\u8005\u5728\u4f7f\u7528\u6642\u61c9\u8a72\u5145\u5206\u8003\u616e\u5176\u4e0d\u8db3\u4e4b\u8655\u3002\u4e86\u89e3\u9019\u4e9b\u6f5b\u5728\u7684\u554f\u984c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u90e8\u7f72\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22SQL Server\u8eab\u4efd\u5217\u7684\u4e0d\u8db3\u4e4b\u8655\uff0c\u5305\u62ec\u81ea\u589e\u9650\u5236\u3001\u6027\u80fd\u5f71\u97ff\u53ca\u5b89\u5168\u6027\u554f\u984c\uff0c\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u5eab\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-137399","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/137399","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=137399"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/137399\/revisions"}],"predecessor-version":[{"id":137400,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/137399\/revisions\/137400"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=137399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=137399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=137399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}