{"id":191762,"date":"2024-11-12T17:07:22","date_gmt":"2024-11-12T09:07:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/191762\/"},"modified":"2024-11-12T17:07:23","modified_gmt":"2024-11-12T09:07:23","slug":"%e8%a9%b3%e8%a7%a3sql-server-2008%e4%b8%ad%e7%9a%84merge%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/191762\/","title":{"rendered":"\u8a73\u89e3SQL Server 2008\u4e2d\u7684MERGE\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"%e8%a9%b3%e8%a7%a3sql-server-2008%e4%b8%ad%e7%9a%84merge%e8%aa%9e%e5%8f%a5-byNgSbPcYc\">\u8a73\u89e3SQL Server 2008\u4e2d\u7684MERGE\u8a9e\u53e5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cSQL Server 2008\u5f15\u5165\u4e86\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u8a9e\u53e5\u2014\u2014MERGE\u3002\u9019\u500b\u8a9e\u53e5\u7684\u4e3b\u8981\u529f\u80fd\u662f\u5c07\u591a\u500b\u64cd\u4f5c\uff08\u5982INSERT\u3001UPDATE\u548cDELETE\uff09\u5408\u4f75\u70ba\u4e00\u500b\u55ae\u4e00\u7684\u64cd\u4f5c\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u8cc7\u6599\u8655\u7406\u7684\u6548\u7387\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMERGE\u8a9e\u53e5\u7684\u8a9e\u6cd5\u3001\u4f7f\u7528\u60c5\u5883\u53ca\u5176\u512a\u52e2\u3002<\/p>\n<h2 id=\"merge%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-byNgSbPcYc\">MERGE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>MERGE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>\nMERGE INTO target_table AS target\nUSING source_table AS source\nON target.key_column = source.key_column\nWHEN MATCHED THEN\n    UPDATE SET target.column1 = source.column1, target.column2 = source.column2\nWHEN NOT MATCHED THEN\n    INSERT (column1, column2) VALUES (source.column1, source.column2)\nWHEN NOT MATCHED BY SOURCE THEN\n    DELETE;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u8a9e\u6cd5\u4e2d\uff0c<code>target_table<\/code>\u662f\u76ee\u6a19\u8868\uff0c<code>source_table<\/code>\u662f\u4f86\u6e90\u8868\u3002<code>ON<\/code>\u5b50\u53e5\u7528\u65bc\u6307\u5b9a\u5339\u914d\u7684\u689d\u4ef6\uff0c\u7136\u5f8c\u6839\u64da\u5339\u914d\u7684\u7d50\u679c\u57f7\u884c\u76f8\u61c9\u7684\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%83%85%e5%a2%83-byNgSbPcYc\">\u4f7f\u7528\u60c5\u5883<\/h2>\n<p>MERGE\u8a9e\u53e5\u7279\u5225\u9069\u5408\u65bc\u9700\u8981\u6839\u64da\u4f86\u6e90\u8cc7\u6599\u66f4\u65b0\u76ee\u6a19\u8cc7\u6599\u7684\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4f7f\u7528\u60c5\u5883\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u540c\u6b65\uff1a<\/strong>\u7576\u9700\u8981\u5c07\u4e00\u500b\u8868\u7684\u6578\u64da\u8207\u53e6\u4e00\u500b\u8868\u9032\u884c\u540c\u6b65\u6642\uff0cMERGE\u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u5730\u8655\u7406\u9019\u4e00\u9700\u6c42\u3002<\/li>\n<li><strong>\u6279\u91cf\u66f4\u65b0\uff1a<\/strong>\u5728\u9032\u884c\u6279\u91cf\u66f4\u65b0\u6642\uff0c\u4f7f\u7528MERGE\u8a9e\u53e5\u53ef\u4ee5\u6e1b\u5c11\u591a\u6b21\u67e5\u8a62\u7684\u958b\u92b7\u3002<\/li>\n<li><strong>\u6578\u64da\u6e05\u7406\uff1a<\/strong>\u7576\u9700\u8981\u522a\u9664\u4e0d\u518d\u5b58\u5728\u65bc\u4f86\u6e90\u8868\u4e2d\u7684\u6578\u64da\u6642\uff0cMERGE\u8a9e\u53e5\u7684DELETE\u64cd\u4f5c\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u3002<\/li>\n<\/ul>\n<h2 id=\"merge%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%84%aa%e5%8b%a2-byNgSbPcYc\">MERGE\u8a9e\u53e5\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528MERGE\u8a9e\u53e5\u6709\u591a\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u63d0\u5347\uff1a<\/strong>\u901a\u904e\u5c07\u591a\u500b\u64cd\u4f5c\u5408\u4f75\u70ba\u4e00\u500b\uff0cMERGE\u8a9e\u53e5\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li><strong>\u4ee3\u78bc\u7c21\u6f54\uff1a<\/strong>MERGE\u8a9e\u53e5\u4f7f\u5f97\u4ee3\u78bc\u66f4\u52a0\u7c21\u6f54\uff0c\u6e1b\u5c11\u4e86\u91cd\u8907\u7684\u67e5\u8a62\u548c\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u6613\u65bc\u7dad\u8b77\uff1a<\/strong>\u7531\u65bcMERGE\u8a9e\u53e5\u7684\u7d50\u69cb\u6e05\u6670\uff0c\u7dad\u8b77\u548c\u7406\u89e3\u8d77\u4f86\u76f8\u5c0d\u5bb9\u6613\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%af%84%e4%be%8b-byNgSbPcYc\">\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528MERGE\u8a9e\u53e5\u7684\u7bc4\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>Employees<\/code>\u7684\u76ee\u6a19\u8868\u548c\u4e00\u500b\u540d\u70ba<code>NewEmployees<\/code>\u7684\u4f86\u6e90\u8868\uff1a<\/p>\n<pre><code>\nMERGE INTO Employees AS target\nUSING NewEmployees AS source\nON target.EmployeeID = source.EmployeeID\nWHEN MATCHED THEN\n    UPDATE SET target.Name = source.Name, target.Salary = source.Salary\nWHEN NOT MATCHED THEN\n    INSERT (EmployeeID, Name, Salary) VALUES (source.EmployeeID, source.Name, source.Salary)\nWHEN NOT MATCHED BY SOURCE THEN\n    DELETE;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u7576<code>EmployeeID<\/code>\u5339\u914d\u6642\uff0c\u5c07\u66f4\u65b0\u76ee\u6a19\u8868\u4e2d\u7684\u59d3\u540d\u548c\u85aa\u6c34\uff1b\u5982\u679c\u4f86\u6e90\u8868\u4e2d\u6709\u65b0\u7684\u54e1\u5de5\uff0c\u5247\u5c07\u5176\u63d2\u5165\u5230\u76ee\u6a19\u8868\u4e2d\uff1b\u5982\u679c\u4f86\u6e90\u8868\u4e2d\u4e0d\u518d\u5b58\u5728\u7684\u54e1\u5de5\uff0c\u5247\u5c07\u5176\u5f9e\u76ee\u6a19\u8868\u4e2d\u522a\u9664\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-byNgSbPcYc\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0cSQL Server 2008\u4e2d\u7684MERGE\u8a9e\u53e5\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u7c21\u5316\u6578\u64da\u64cd\u4f5c\u4e26\u63d0\u9ad8\u6027\u80fd\u3002\u7121\u8ad6\u662f\u5728\u6578\u64da\u540c\u6b65\u3001\u6279\u91cf\u66f4\u65b0\u9084\u662f\u6578\u64da\u6e05\u7406\u65b9\u9762\uff0cMERGE\u8a9e\u53e5\u90fd\u80fd\u63d0\u4f9b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u638c\u63e1MERGE\u8a9e\u53e5\u7684\u4f7f\u7528\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u96f2\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eSQL Server 2008\u4e2d\u7684MERGE\u8a9e\u53e5\uff0c\u4e86\u89e3\u5176\u7528\u6cd5\u3001\u512a\u52e2\u53ca\u5be6\u969b\u61c9\u7528\u7bc4\u4f8b\uff0c\u63d0\u5347\u6578\u64da\u64cd\u4f5c\u6548\u7387\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-191762","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191762","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=191762"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191762\/revisions"}],"predecessor-version":[{"id":191763,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191762\/revisions\/191763"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=191762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=191762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=191762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}