{"id":94592,"date":"2024-10-19T19:32:16","date_gmt":"2024-10-19T11:32:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94592\/"},"modified":"2024-10-19T19:32:16","modified_gmt":"2024-10-19T11:32:16","slug":"oracle-%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e5%a6%82%e4%bd%95%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%80%8b%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94592\/","title":{"rendered":"Oracle \u591a\u8868\u95dc\u806f\u5982\u4f55\u66f4\u65b0\u591a\u500b\u5b57\u6bb5"},"content":{"rendered":"<h1 id=\"oracle-%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e5%a6%82%e4%bd%95%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%80%8b%e5%ad%97%e6%ae%b5-teouJHcOly\">Oracle \u591a\u8868\u95dc\u806f\u5982\u4f55\u66f4\u65b0\u591a\u500b\u5b57\u6bb5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u66f4\u65b0\u591a\u500b\u5b57\u6bb5\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u6d89\u53ca\u591a\u8868\u95dc\u806f\u7684\u60c5\u6cc1\u4e0b\u3002Oracle \u8cc7\u6599\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9019\u4e00\u76ee\u6a19\uff0c\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Oracle \u4e2d\u66f4\u65b0\u591a\u500b\u5b57\u6bb5\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-teouJHcOly\">\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728 Oracle \u4e2d\uff0c\u66f4\u65b0\u591a\u500b\u5b57\u6bb5\u901a\u5e38\u4f7f\u7528 <code>UPDATE<\/code> \u8a9e\u53e5\u3002\u7576\u6d89\u53ca\u591a\u8868\u95dc\u806f\u6642\uff0c\u901a\u5e38\u9700\u8981\u4f7f\u7528 <code>JOIN<\/code> \u4f86\u9023\u63a5\u4e0d\u540c\u7684\u8868\u3002\u9019\u6a23\u53ef\u4ee5\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u4f86\u66f4\u65b0\u7279\u5b9a\u7684\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-join-%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%80%8b%e5%ad%97%e6%ae%b5-teouJHcOly\">\u4f7f\u7528 JOIN \u66f4\u65b0\u591a\u500b\u5b57\u6bb5<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 <code>JOIN<\/code> \u66f4\u65b0\u591a\u500b\u5b57\u6bb5\u7684\u7bc4\u4f8b\u3002\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<code>employees<\/code> \u548c <code>departments<\/code>\uff0c\u6211\u5011\u5e0c\u671b\u6839\u64da\u90e8\u9580\u7684\u540d\u7a31\u4f86\u66f4\u65b0\u54e1\u5de5\u7684\u85aa\u6c34\u548c\u8077\u4f4d\u3002<\/p>\n<pre><code>UPDATE employees e\nSET e.salary = e.salary * 1.1,\n    e.position = 'Senior ' || e.position\nWHERE e.department_id IN (\n    SELECT d.id\n    FROM departments d\n    WHERE d.name = 'Sales'\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5c07\u6240\u6709\u5728\u300cSales\u300d\u90e8\u9580\u7684\u54e1\u5de5\u85aa\u6c34\u63d0\u9ad8 10%\uff0c\u4e26\u5c07\u4ed6\u5011\u7684\u8077\u4f4d\u524d\u52a0\u4e0a\u300cSenior\u300d\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%80%8b%e5%ad%97%e6%ae%b5-teouJHcOly\">\u4f7f\u7528\u5b50\u67e5\u8a62\u66f4\u65b0\u591a\u500b\u5b57\u6bb5<\/h2>\n<p>\u9664\u4e86\u4f7f\u7528 <code>JOIN<\/code>\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8a62\u4f86\u66f4\u65b0\u591a\u500b\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7bc4\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u8981\u6839\u64da\u54e1\u5de5\u7684 ID \u66f4\u65b0\u4ed6\u5011\u7684\u85aa\u6c34\u548c\u8077\u4f4d\u3002<\/p>\n<pre><code>UPDATE employees\nSET salary = (SELECT AVG(salary) FROM employees WHERE department_id = 10),\n    position = 'Manager'\nWHERE id IN (1, 2, 3);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5c07\u54e1\u5de5 ID \u70ba 1\u30012 \u548c 3 \u7684\u85aa\u6c34\u66f4\u65b0\u70ba\u90e8\u9580 ID \u70ba 10 \u7684\u5e73\u5747\u85aa\u6c34\uff0c\u4e26\u5c07\u4ed6\u5011\u7684\u8077\u4f4d\u8a2d\u70ba\u300cManager\u300d\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-teouJHcOly\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u4e8b\u52d9\u7ba1\u7406\uff1a<\/strong>\u5728\u9032\u884c\u591a\u8868\u66f4\u65b0\u6642\uff0c\u5efa\u8b70\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5982\u679c\u66f4\u65b0\u904e\u7a0b\u4e2d\u51fa\u73fe\u932f\u8aa4\uff0c\u53ef\u4ee5\u56de\u6efe\u5230\u4e4b\u524d\u7684\u72c0\u614b\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u5728\u66f4\u65b0\u5927\u91cf\u6578\u64da\u6642\uff0c\u61c9\u8003\u616e\u6027\u80fd\u554f\u984c\u3002\u53ef\u4ee5\u4f7f\u7528\u6279\u91cf\u66f4\u65b0\u6216\u5206\u6279\u8655\u7406\u4f86\u63d0\u9ad8\u6548\u7387\u3002<\/li>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u5728\u66f4\u65b0\u4e4b\u524d\uff0c\u61c9\u6aa2\u67e5\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u78ba\u4fdd\u4e0d\u6703\u56e0\u70ba\u66f4\u65b0\u800c\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-teouJHcOly\">\u7d50\u8ad6<\/h2>\n<p>\u5728 Oracle \u4e2d\u66f4\u65b0\u591a\u500b\u5b57\u6bb5\u7684\u904e\u7a0b\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 <code>JOIN<\/code> \u6216\u5b50\u67e5\u8a62\u4f86\u5be6\u73fe\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u9748\u6d3b\uff0c\u800c\u4e14\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u591a\u8868\u95dc\u806f\u7684\u60c5\u6cc1\u3002\u7121\u8ad6\u662f\u9032\u884c\u7c21\u55ae\u7684\u66f4\u65b0\u9084\u662f\u8907\u96dc\u7684\u6578\u64da\u64cd\u4f5c\uff0c\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u6280\u5de7\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728 Oracle \u4e2d\u9032\u884c\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u4ee5\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Oracle\u4e2d\u4f7f\u7528\u591a\u8868\u95dc\u806f\u66f4\u65b0\u591a\u500b\u5b57\u6bb5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u8907\u96dc\u67e5\u8a62\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-94592","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94592","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=94592"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94592\/revisions"}],"predecessor-version":[{"id":94593,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94592\/revisions\/94593"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}