{"id":161111,"date":"2024-11-04T03:42:27","date_gmt":"2024-11-03T19:42:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161111\/"},"modified":"2024-11-04T03:42:28","modified_gmt":"2024-11-03T19:42:28","slug":"%e7%8d%b2%e5%be%97-sql-server-%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e5%80%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161111\/","title":{"rendered":"\u7372\u5f97 sql server \u81ea\u589e\u5b57\u6bb5\u7684\u503c"},"content":{"rendered":"<h1 id=\"%e7%8d%b2%e5%be%97-sql-server-%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e5%80%bc-dNGpVFdkGb\">\u7372\u5f97 SQL Server \u81ea\u589e\u5b57\u6bb5\u7684\u503c<\/h1>\n<p>\u5728\u4f7f\u7528 SQL Server \u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u81ea\u589e\u5b57\u6bb5\uff08Identity Column\uff09\u662f\u4e00\u500b\u975e\u5e38\u5e38\u898b\u7684\u7279\u6027\u3002\u81ea\u589e\u5b57\u6bb5\u901a\u5e38\u7528\u65bc\u4e3b\u9375\uff0c\u80fd\u5920\u81ea\u52d5\u751f\u6210\u552f\u4e00\u7684\u6578\u503c\uff0c\u9019\u5c0d\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u552f\u4e00\u6027\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 SQL Server \u4e2d\u7372\u5f97\u81ea\u589e\u5b57\u6bb5\u7684\u503c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-dNGpVFdkGb\">\u81ea\u589e\u5b57\u6bb5\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u81ea\u589e\u5b57\u6bb5\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u985e\u578b\uff0c\u7576\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0cSQL Server \u6703\u81ea\u52d5\u70ba\u8a72\u5b57\u6bb5\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u6574\u6578\u503c\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97\u958b\u767c\u8005\u7121\u9700\u624b\u52d5\u7ba1\u7406\u4e3b\u9375\u7684\u503c\uff0c\u5f9e\u800c\u6e1b\u5c11\u4e86\u51fa\u932f\u7684\u6a5f\u6703\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5-dNGpVFdkGb\">\u5982\u4f55\u5275\u5efa\u81ea\u589e\u5b57\u6bb5<\/h2>\n<p>\u5728\u5275\u5efa\u8868\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>IDENTITY<\/code> \u95dc\u9375\u5b57\u4f86\u5b9a\u7fa9\u81ea\u589e\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u81ea\u589e\u5b57\u6bb5\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT IDENTITY(1,1) PRIMARY KEY,\n    UserName NVARCHAR(50),\n    Email NVARCHAR(100)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>UserID<\/code> \u662f\u4e00\u500b\u81ea\u589e\u5b57\u6bb5\uff0c\u5f9e 1 \u958b\u59cb\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u8a18\u9304\u6642\u81ea\u52d5\u589e\u52a0 1\u3002<\/p>\n<h2 id=\"%e7%8d%b2%e5%8f%96%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e5%80%bc-dNGpVFdkGb\">\u7372\u53d6\u81ea\u589e\u5b57\u6bb5\u7684\u503c<\/h2>\n<p>\u5728\u63d2\u5165\u65b0\u8a18\u9304\u5f8c\uff0c\u7372\u53d6\u81ea\u589e\u5b57\u6bb5\u7684\u503c\u53ef\u4ee5\u4f7f\u7528 <code>SCOPE_IDENTITY()<\/code> \u51fd\u6578\u3002\u9019\u500b\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7bc4\u570d\u5167\u6700\u5f8c\u63d2\u5165\u7684\u81ea\u589e\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>INSERT INTO Users (UserName, Email) \nVALUES ('John Doe', 'john@example.com');\n\nDECLARE @NewUserID INT;\nSET @NewUserID = SCOPE_IDENTITY();\n\nSELECT @NewUserID AS NewUserID;<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u9996\u5148\u63d2\u5165\u4e86\u4e00\u689d\u65b0\u8a18\u9304\uff0c\u7136\u5f8c\u4f7f\u7528 <code>SCOPE_IDENTITY()<\/code> \u7372\u53d6\u525b\u63d2\u5165\u7684 <code>UserID<\/code> \u503c\uff0c\u4e26\u5c07\u5176\u5b58\u5132\u5728\u8b8a\u91cf <code>@NewUserID<\/code> \u4e2d\uff0c\u6700\u5f8c\u9078\u64c7\u8a72\u8b8a\u91cf\u4ee5\u986f\u793a\u65b0\u7528\u6236\u7684 ID\u3002<\/p>\n<h2 id=\"%e5%85%b6%e4%bb%96%e7%8d%b2%e5%8f%96%e8%87%aa%e5%a2%9e%e5%80%bc%e7%9a%84%e6%96%b9%e6%b3%95-dNGpVFdkGb\">\u5176\u4ed6\u7372\u53d6\u81ea\u589e\u503c\u7684\u65b9\u6cd5<\/h2>\n<p>\u9664\u4e86 <code>SCOPE_IDENTITY()<\/code>\uff0c\u9084\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u7372\u53d6\u81ea\u589e\u5b57\u6bb5\u7684\u503c\uff1a<\/p>\n<ul>\n<li><code>@@IDENTITY<\/code>\uff1a\u8fd4\u56de\u6700\u5f8c\u63d2\u5165\u7684\u81ea\u589e\u503c\uff0c\u4f46\u4e0d\u5c40\u9650\u65bc\u7576\u524d\u7bc4\u570d\uff0c\u53ef\u80fd\u6703\u53d7\u5230\u89f8\u767c\u5668\u5f71\u97ff\u3002<\/li>\n<li><code>OUTPUT<\/code> \u5b50\u53e5\uff1a\u5728\u63d2\u5165\u6642\u53ef\u4ee5\u76f4\u63a5\u8fd4\u56de\u81ea\u589e\u5b57\u6bb5\u7684\u503c\u3002<\/li>\n<\/ul>\n<h3 id=\"%e4%bd%bf%e7%94%a8-output-%e5%ad%90%e5%8f%a5%e7%9a%84%e7%af%84%e4%be%8b-dNGpVFdkGb\">\u4f7f\u7528 OUTPUT \u5b50\u53e5\u7684\u7bc4\u4f8b<\/h3>\n<pre><code>DECLARE @InsertedUsers TABLE (UserID INT);\n\nINSERT INTO Users (UserName, Email) \nOUTPUT INSERTED.UserID INTO @InsertedUsers\nVALUES ('Jane Doe', 'jane@example.com');\n\nSELECT * FROM @InsertedUsers;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 <code>OUTPUT<\/code> \u5b50\u53e5\u5c07\u63d2\u5165\u7684 <code>UserID<\/code> \u503c\u5b58\u5132\u5230\u4e00\u500b\u81e8\u6642\u8868\u4e2d\uff0c\u7136\u5f8c\u53ef\u4ee5\u8f15\u9b06\u67e5\u8a62\u9019\u4e9b\u503c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-dNGpVFdkGb\">\u7e3d\u7d50<\/h2>\n<p>\u7372\u5f97 SQL Server \u81ea\u589e\u5b57\u6bb5\u7684\u503c\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u8a18\u9304\u3002\u901a\u904e\u4f7f\u7528 <code>SCOPE_IDENTITY()<\/code>\u3001<code>@@IDENTITY<\/code> \u548c <code>OUTPUT<\/code> \u5b50\u53e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9748\u6d3b\u5730\u7372\u53d6\u81ea\u589e\u5b57\u6bb5\u7684\u503c\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u64cd\u4f5c\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\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\u7528\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728 SQL Server \u4e2d\u7372\u53d6\u81ea\u589e\u5b57\u6bb5\u7684\u503c\uff0c\u4f7f\u7528 SCOPE_IDENTITY()\u3001IDENT_CURRENT() \u548c OUTPUT \u5b50\u53e5\u7b49\u65b9\u6cd5\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-161111","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161111","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=161111"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161111\/revisions"}],"predecessor-version":[{"id":161112,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161111\/revisions\/161112"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}