{"id":95244,"date":"2024-10-19T23:26:17","date_gmt":"2024-10-19T15:26:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95244\/"},"modified":"2024-10-19T23:26:18","modified_gmt":"2024-10-19T15:26:18","slug":"oracle%e8%a3%a1%e9%80%9a%e9%81%8emerge%e8%aa%9e%e5%8f%a5%e5%88%a4%e6%96%b7%e9%87%8d%e8%a4%87%e6%8f%92%e5%85%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95244\/","title":{"rendered":"Oracle\u88e1\u901a\u904emerge\u8a9e\u53e5\u5224\u65b7\u91cd\u8907\u63d2\u5165"},"content":{"rendered":"<h1 id=\"oracle%e8%a3%a1%e9%80%9a%e9%81%8emerge%e8%aa%9e%e5%8f%a5%e5%88%a4%e6%96%b7%e9%87%8d%e8%a4%87%e6%8f%92%e5%85%a5-NLGRJOetCv\">Oracle\u88e1\u901a\u904eMERGE\u8a9e\u53e5\u5224\u65b7\u91cd\u8907\u63d2\u5165<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u91cd\u8907\u63d2\u5165\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002Oracle\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\u2014\u2014MERGE\u8a9e\u53e5\uff0c\u4f86\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528MERGE\u8a9e\u53e5\u4f86\u5224\u65b7\u91cd\u8907\u63d2\u5165\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmerge%e8%aa%9e%e5%8f%a5%ef%bc%9f-NLGRJOetCv\">\u4ec0\u9ebc\u662fMERGE\u8a9e\u53e5\uff1f<\/h2>\n<p>MERGE\u8a9e\u53e5\u662f\u4e00\u7a2eDML\uff08\u6578\u64da\u64cd\u4f5c\u8a9e\u8a00\uff09\u8a9e\u53e5\uff0c\u5141\u8a31\u7528\u6236\u5728\u4e00\u500b\u64cd\u4f5c\u4e2d\u540c\u6642\u57f7\u884c\u63d2\u5165\u548c\u66f4\u65b0\u3002\u9019\u4f7f\u5f97MERGE\u8a9e\u53e5\u7279\u5225\u9069\u5408\u7528\u65bc\u9700\u8981\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u4f86\u6c7a\u5b9a\u662f\u63d2\u5165\u65b0\u8a18\u9304\u9084\u662f\u66f4\u65b0\u73fe\u6709\u8a18\u9304\u7684\u60c5\u6cc1\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-NLGRJOetCv\">MERGE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<pre><code>\nMERGE INTO target_table USING source_table\nON (target_table.id = source_table.id)\nWHEN MATCHED THEN\n    UPDATE SET target_table.column1 = source_table.column1\nWHEN NOT MATCHED THEN\n    INSERT (id, column1) VALUES (source_table.id, source_table.column1);\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\u7576\u5169\u500b\u8868\u4e2d\u7684ID\u5339\u914d\u6642\uff0c\u5c07\u57f7\u884c\u66f4\u65b0\u64cd\u4f5c\uff1b\u5982\u679c\u6c92\u6709\u5339\u914d\uff0c\u5247\u57f7\u884c\u63d2\u5165\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8merge%e8%aa%9e%e5%8f%a5%e5%88%a4%e6%96%b7%e9%87%8d%e8%a4%87%e6%8f%92%e5%85%a5%e7%9a%84%e5%af%a6%e4%be%8b-NLGRJOetCv\">\u4f7f\u7528MERGE\u8a9e\u53e5\u5224\u65b7\u91cd\u8907\u63d2\u5165\u7684\u5be6\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8868\uff0c\u5305\u542b\u54e1\u5de5\u7684ID\u548c\u59d3\u540d\u3002\u6211\u5011\u5e0c\u671b\u5c07\u4e00\u500b\u65b0\u7684\u54e1\u5de5\u6578\u64da\u63d2\u5165\u5230\u9019\u500b\u8868\u4e2d\uff0c\u4f46\u5982\u679c\u8a72\u54e1\u5de5\u5df2\u7d93\u5b58\u5728\uff0c\u6211\u5011\u5247\u9700\u8981\u66f4\u65b0\u5176\u59d3\u540d\u3002<\/p>\n<pre><code>\nMERGE INTO employees e\nUSING (SELECT 1 AS id, 'John Doe' AS name FROM dual) src\nON (e.id = src.id)\nWHEN MATCHED THEN\n    UPDATE SET e.name = src.name\nWHEN NOT MATCHED THEN\n    INSERT (id, name) VALUES (src.id, src.name);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86<code>dual<\/code>\u8868\u4f86\u6a21\u64ec\u4f86\u6e90\u6578\u64da\u3002\u5982\u679cID\u70ba1\u7684\u54e1\u5de5\u5df2\u7d93\u5b58\u5728\uff0c\u5247\u66f4\u65b0\u5176\u59d3\u540d\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u63d2\u5165\u65b0\u7684\u54e1\u5de5\u8a18\u9304\u3002<\/p>\n<h2 id=\"merge%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%84%aa%e5%8b%a2-NLGRJOetCv\">MERGE\u8a9e\u53e5\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u6548\u7387\u9ad8\uff1a<\/strong>MERGE\u8a9e\u53e5\u53ef\u4ee5\u5728\u55ae\u4e00\u64cd\u4f5c\u4e2d\u5b8c\u6210\u63d2\u5165\u548c\u66f4\u65b0\uff0c\u6e1b\u5c11\u4e86\u591a\u6b21\u67e5\u8a62\u7684\u958b\u92b7\u3002<\/li>\n<li><strong>\u7c21\u5316\u4ee3\u78bc\uff1a<\/strong>\u4f7f\u7528MERGE\u8a9e\u53e5\u53ef\u4ee5\u6e1b\u5c11\u4ee3\u78bc\u7684\u8907\u96dc\u6027\uff0c\u4f7f\u5f97\u7dad\u8b77\u548c\u7406\u89e3\u8b8a\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/li>\n<li><strong>\u539f\u5b50\u6027\uff1a<\/strong>MERGE\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u9019\u610f\u5473\u8457\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\uff0c\u9019\u6709\u52a9\u65bc\u4fdd\u6301\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-NLGRJOetCv\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u4f7f\u7528MERGE\u8a9e\u53e5\u6642\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fddON\u689d\u4ef6\u7684\u552f\u4e00\u6027\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u66f4\u65b0\u3002<\/li>\n<li>\u5728\u9032\u884c\u5927\u898f\u6a21\u6578\u64da\u64cd\u4f5c\u6642\uff0c\u8003\u616e\u4f7f\u7528\u4e8b\u52d9\u4f86\u4fdd\u8b77\u6578\u64da\u5b8c\u6574\u6027\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u548c\u512a\u5316MERGE\u8a9e\u53e5\u7684\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NLGRJOetCv\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Oracle\u7684MERGE\u8a9e\u53e5\u4f86\u5224\u65b7\u91cd\u8907\u63d2\u5165\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u7c21\u55ae\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u65bd\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u7684\u63d2\u5165\u548c\u66f4\u65b0\u64cd\u4f5c\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u89e3\u6c7a\u65b9\u6848\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Oracle\u4e2d\u4f7f\u7528MERGE\u8a9e\u53e5\u5224\u65b7\u91cd\u8907\u63d2\u5165\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u66f4\u65b0\u8207\u63d2\u5165\u64cd\u4f5c\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-95244","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95244","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=95244"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95244\/revisions"}],"predecessor-version":[{"id":95245,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95244\/revisions\/95245"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}