{"id":95190,"date":"2024-10-19T22:59:17","date_gmt":"2024-10-19T14:59:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95190\/"},"modified":"2024-10-19T22:59:17","modified_gmt":"2024-10-19T14:59:17","slug":"oracle%e5%9f%ba%e7%a4%8e%e6%95%99%e7%a8%8b%e4%b9%8bmerge-into","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95190\/","title":{"rendered":"Oracle\u57fa\u790e\u6559\u7a0b\u4e4bMerge into"},"content":{"rendered":"<h1 id=\"oracle%e5%9f%ba%e7%a4%8e%e6%95%99%e7%a8%8b%e4%b9%8bmerge-into-dVFjnfSQiX\">Oracle\u57fa\u790e\u6559\u7a0b\u4e4bMerge into<\/h1>\n<p>\u5728Oracle\u8cc7\u6599\u5eab\u4e2d\uff0c<code>MERGE INTO<\/code>\u8a9e\u53e5\u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684\u5de5\u5177\uff0c\u5141\u8a31\u7528\u6236\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u5c07\u6578\u64da\u63d2\u5165\u6216\u66f4\u65b0\u5230\u76ee\u6a19\u8868\u4e2d\u3002\u9019\u7a2e\u8a9e\u53e5\u7279\u5225\u9069\u5408\u7528\u65bc\u9700\u8981\u6839\u64da\u4f86\u6e90\u8868\u7684\u6578\u64da\u4f86\u66f4\u65b0\u76ee\u6a19\u8868\u7684\u60c5\u6cc1\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e<code>MERGE INTO<\/code>\u7684\u57fa\u672c\u7528\u6cd5\u3001\u8a9e\u6cd5\u7d50\u69cb\u4ee5\u53ca\u5be6\u969b\u61c9\u7528\u793a\u4f8b\u3002<\/p>\n<h2 id=\"merge-into%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-dVFjnfSQiX\">MERGE INTO\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p><code>MERGE INTO<\/code>\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>\nMERGE INTO target_table USING source_table\nON (condition)\nWHEN MATCHED THEN\n    UPDATE SET column1 = value1, column2 = value2, ...\nWHEN NOT MATCHED THEN\n    INSERT (column1, column2, ...) VALUES (value1, value2, ...);\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>target_table<\/code>\u662f\u6211\u5011\u5e0c\u671b\u66f4\u65b0\u6216\u63d2\u5165\u6578\u64da\u7684\u76ee\u6a19\u8868\uff0c\u800c<code>source_table<\/code>\u662f\u63d0\u4f9b\u6578\u64da\u7684\u4f86\u6e90\u8868\u3002<code>ON<\/code>\u5b50\u53e5\u7528\u65bc\u6307\u5b9a\u5339\u914d\u689d\u4ef6\uff0c\u7576\u689d\u4ef6\u6210\u7acb\u6642\uff0c\u5c07\u57f7\u884c<code>UPDATE<\/code>\u64cd\u4f5c\uff1b\u5982\u679c\u689d\u4ef6\u4e0d\u6210\u7acb\uff0c\u5247\u57f7\u884c<code>INSERT<\/code>\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"merge-into%e7%9a%84%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-dVFjnfSQiX\">MERGE INTO\u7684\u4f7f\u7528\u5834\u666f<\/h2>\n<p>\u4f7f\u7528<code>MERGE INTO<\/code>\u8a9e\u53e5\u7684\u5834\u666f\u901a\u5e38\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u540c\u6b65\uff1a\u5c07\u4f86\u6e90\u8868\u4e2d\u7684\u6578\u64da\u540c\u6b65\u5230\u76ee\u6a19\u8868\u4e2d\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u6279\u91cf\u66f4\u65b0\uff1a\u5728\u4e00\u6b21\u64cd\u4f5c\u4e2d\u540c\u6642\u9032\u884c\u66f4\u65b0\u548c\u63d2\u5165\uff0c\u6e1b\u5c11\u591a\u6b21\u67e5\u8a62\u7684\u958b\u92b7\u3002<\/li>\n<li>\u6578\u64da\u6e05\u7406\uff1a\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u66f4\u65b0\u6216\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e7%a4%ba%e4%be%8b-dVFjnfSQiX\">\u5be6\u969b\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528<code>MERGE INTO<\/code>\u7684\u5be6\u969b\u793a\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u76ee\u6a19\u8868\u548c\u4e00\u500b\u540d\u70ba<code>new_employees<\/code>\u7684\u4f86\u6e90\u8868\u3002<\/p>\n<pre><code>\nMERGE INTO employees e\nUSING new_employees ne\nON (e.employee_id = ne.employee_id)\nWHEN MATCHED THEN\n    UPDATE SET e.salary = ne.salary, e.department = ne.department\nWHEN NOT MATCHED THEN\n    INSERT (employee_id, name, salary, department)\n    VALUES (ne.employee_id, ne.name, ne.salary, ne.department);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u7576<code>employees<\/code>\u8868\u4e2d\u5b58\u5728\u76f8\u540c\u7684<code>employee_id<\/code>\u6642\uff0c\u5c07\u66f4\u65b0\u8a72\u54e1\u5de5\u7684\u85aa\u6c34\u548c\u90e8\u9580\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u5c07\u65b0\u54e1\u5de5\u7684\u6578\u64da\u63d2\u5165\u5230<code>employees<\/code>\u8868\u4e2d\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-dVFjnfSQiX\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528<code>MERGE INTO<\/code>\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd<code>ON<\/code>\u689d\u4ef6\u7684\u6b63\u78ba\u6027\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u66f4\u65b0\u6216\u63d2\u5165\u3002<\/li>\n<li>\u5728\u5927\u6578\u64da\u91cf\u7684\u60c5\u6cc1\u4e0b\uff0c<code>MERGE INTO<\/code>\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u5efa\u8b70\u9032\u884c\u6027\u80fd\u6e2c\u8a66\u3002<\/li>\n<li>\u5728\u9032\u884c\u6578\u64da\u64cd\u4f5c\u524d\uff0c\u6700\u597d\u5148\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u640d\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-dVFjnfSQiX\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0c<code>MERGE INTO<\/code>\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684SQL\u8a9e\u53e5\uff0c\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u6578\u64da\u7684\u66f4\u65b0\u548c\u63d2\u5165\u64cd\u4f5c\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u6b64\u8a9e\u53e5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9032\u884c\u6578\u64da\u7ba1\u7406\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u638c\u63e1<code>MERGE INTO<\/code>\u7684\u7528\u6cd5\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\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\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u9084\u662f\u5176\u4ed6\u985e\u578b\u7684<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Oracle\u57fa\u790e\u6559\u7a0b\u4e2d\u7684Merge into\u8a9e\u53e5\uff0c\u5b78\u7fd2\u5982\u4f55\u9ad8\u6548\u5408\u4f75\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u80fd\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-95190","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95190","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=95190"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95190\/revisions"}],"predecessor-version":[{"id":95191,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95190\/revisions\/95191"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}