{"id":95096,"date":"2024-10-19T22:12:18","date_gmt":"2024-10-19T14:12:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95096\/"},"modified":"2024-10-19T22:12:19","modified_gmt":"2024-10-19T14:12:19","slug":"oracle%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e4%b8%ad%e7%9a%84update%e8%aa%9e%e5%8f%a5%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95096\/","title":{"rendered":"Oracle\u591a\u8868\u95dc\u806f\u4e2d\u7684UPDATE\u8a9e\u53e5\u5be6\u969b\u61c9\u7528"},"content":{"rendered":"<h1 id=\"oracle%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e4%b8%ad%e7%9a%84update%e8%aa%9e%e5%8f%a5%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8-DzYAMrhNOr\">Oracle\u591a\u8868\u95dc\u806f\u4e2d\u7684UPDATE\u8a9e\u53e5\u5be6\u969b\u61c9\u7528<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cOracle\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u578b\u8cc7\u6599\u5eab\u3002\u7576\u6d89\u53ca\u5230\u591a\u8868\u95dc\u806f\u6642\uff0cUPDATE\u8a9e\u53e5\u7684\u4f7f\u7528\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u4e2d\u591a\u8868\u95dc\u806f\u7684UPDATE\u8a9e\u53e5\u7684\u5be6\u969b\u61c9\u7528\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u793a\u4f8b\u4f86\u5e6b\u52a9\u7406\u89e3\u5176\u7528\u6cd5\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e7%9a%84%e6%a6%82%e5%bf%b5-DzYAMrhNOr\">\u591a\u8868\u95dc\u806f\u7684\u6982\u5ff5<\/h2>\n<p>\u591a\u8868\u95dc\u806f\u662f\u6307\u5728\u4e00\u500b\u67e5\u8a62\u4e2d\u540c\u6642\u6d89\u53ca\u591a\u500b\u8cc7\u6599\u8868\u3002\u9019\u901a\u5e38\u662f\u901a\u904eJOIN\u64cd\u4f5c\u4f86\u5be6\u73fe\u7684\u3002\u5728\u9032\u884cUPDATE\u64cd\u4f5c\u6642\uff0c\u53ef\u80fd\u9700\u8981\u6839\u64da\u5176\u4ed6\u8868\u4e2d\u7684\u6578\u64da\u4f86\u66f4\u65b0\u67d0\u4e00\u8868\u7684\u8a18\u9304\u3002\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u591a\u8868\u95dc\u806f\u7684UPDATE\u8a9e\u53e5\u5c31\u986f\u5f97\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"update%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-DzYAMrhNOr\">UPDATE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0cUPDATE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE table_name\nSET column1 = value1, column2 = value2, ...\nWHERE condition;<\/code><\/pre>\n<p>\u7576\u6d89\u53ca\u5230\u591a\u8868\u95dc\u806f\u6642\uff0c\u8a9e\u6cd5\u6703\u7a0d\u6709\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528JOIN\u7684UPDATE\u8a9e\u53e5\u7684\u57fa\u672c\u7d50\u69cb\uff1a<\/p>\n<pre><code>UPDATE (SELECT a.column1, b.column2\n          FROM table_a a\n          JOIN table_b b ON a.id = b.a_id)\nSET column1 = new_value\nWHERE condition;<\/code><\/pre>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e7%a4%ba%e4%be%8b-DzYAMrhNOr\">\u5be6\u969b\u61c9\u7528\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<strong>employees<\/strong>\uff08\u54e1\u5de5\u8868\uff09\u548c<strong>departments<\/strong>\uff08\u90e8\u9580\u8868\uff09\u3002\u6211\u5011\u5e0c\u671b\u6839\u64da\u90e8\u9580\u7684\u540d\u7a31\u4f86\u66f4\u65b0\u54e1\u5de5\u7684\u85aa\u6c34\u3002\u4ee5\u4e0b\u662f\u5177\u9ad4\u7684\u64cd\u4f5c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%89%b5%e5%bb%ba%e7%a4%ba%e4%be%8b%e8%a1%a8-DzYAMrhNOr\">1. \u5275\u5efa\u793a\u4f8b\u8868<\/h3>\n<pre><code>CREATE TABLE departments (\n    id NUMBER PRIMARY KEY,\n    name VARCHAR2(50)\n);\n\nCREATE TABLE employees (\n    id NUMBER PRIMARY KEY,\n    name VARCHAR2(50),\n    salary NUMBER,\n    department_id NUMBER,\n    FOREIGN KEY (department_id) REFERENCES departments(id)\n);<\/code><\/pre>\n<h3 id=\"2-%e6%8f%92%e5%85%a5%e7%a4%ba%e4%be%8b%e6%95%b8%e6%93%9a-DzYAMrhNOr\">2. \u63d2\u5165\u793a\u4f8b\u6578\u64da<\/h3>\n<pre><code>INSERT INTO departments (id, name) VALUES (1, 'HR');\nINSERT INTO departments (id, name) VALUES (2, 'IT');\n\nINSERT INTO employees (id, name, salary, department_id) VALUES (1, 'Alice', 50000, 1);\nINSERT INTO employees (id, name, salary, department_id) VALUES (2, 'Bob', 60000, 2);<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8update%e8%aa%9e%e5%8f%a5%e6%9b%b4%e6%96%b0%e8%96%aa%e6%b0%b4-DzYAMrhNOr\">3. \u4f7f\u7528UPDATE\u8a9e\u53e5\u66f4\u65b0\u85aa\u6c34<\/h3>\n<p>\u73fe\u5728\uff0c\u6211\u5011\u5e0c\u671b\u5c07\u6240\u6709IT\u90e8\u9580\u7684\u54e1\u5de5\u85aa\u6c34\u63d0\u9ad810%\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bUPDATE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE employees e\nSET e.salary = e.salary * 1.1\nWHERE e.department_id = (SELECT d.id FROM departments d WHERE d.name = 'IT');<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-DzYAMrhNOr\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u4f7f\u7528\u591a\u8868\u95dc\u806f\u7684UPDATE\u8a9e\u53e5\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u5b50\u67e5\u8a62\u8fd4\u56de\u7684\u7d50\u679c\u662f\u552f\u4e00\u7684\uff0c\u5426\u5247\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<li>\u5728\u9032\u884c\u5927\u898f\u6a21\u66f4\u65b0\u6642\uff0c\u5efa\u8b70\u5148\u9032\u884c\u5099\u4efd\uff0c\u4ee5\u9632\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li>\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-DzYAMrhNOr\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u4e2d\u7684\u591a\u8868\u95dc\u806fUPDATE\u8a9e\u53e5\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u6839\u64da\u5176\u4ed6\u8868\u7684\u6578\u64da\u4f86\u66f4\u65b0\u8a18\u9304\u3002\u901a\u904e\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u793a\u4f8b\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u66f4\u65b0\u8cc7\u6599\u5eab\u4e2d\u7684\u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u8cc7\u6599\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u6216<code><a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a><\/code>\u6709\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u591a\u8868\u95dc\u806f\u4e2d\u7684UPDATE\u8a9e\u53e5\u7684\u5be6\u969b\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u66f4\u65b0\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u5eab\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-95096","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95096","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=95096"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95096\/revisions"}],"predecessor-version":[{"id":95097,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95096\/revisions\/95097"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}