{"id":173367,"date":"2024-11-07T17:26:23","date_gmt":"2024-11-07T09:26:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173367\/"},"modified":"2024-11-07T17:26:24","modified_gmt":"2024-11-07T09:26:24","slug":"%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e5%9c%b0%e5%b0%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%b2%e8%a1%8c%e5%a4%9a%e5%88%97%e4%bf%ae%e6%94%b9-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%ae%e6%94%b9%e5%a4%9a%e5%88%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173367\/","title":{"rendered":"\u5982\u4f55\u9ad8\u6548\u5730\u5c0d\u6578\u64da\u5eab\u9032\u884c\u591a\u5217\u4fee\u6539 (\u6578\u64da\u5eab\u4fee\u6539\u591a\u5217)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e5%9c%b0%e5%b0%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%b2%e8%a1%8c%e5%a4%9a%e5%88%97%e4%bf%ae%e6%94%b9-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%ae%e6%94%b9%e5%a4%9a%e5%88%97-lvgswQASqb\">\u5982\u4f55\u9ad8\u6548\u5730\u5c0d\u6578\u64da\u5eab\u9032\u884c\u591a\u5217\u4fee\u6539 (\u6578\u64da\u5eab\u4fee\u6539\u591a\u5217)<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u5c0d\u6578\u64da\u7684\u4fee\u6539\u662f\u65e5\u5e38\u64cd\u4f5c\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u5c24\u5176\u662f\u5728\u9700\u8981\u540c\u6642\u4fee\u6539\u591a\u5217\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u9ad8\u6548\u5730\u9032\u884c\u9019\u4e9b\u64cd\u4f5c\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u9700\u8981\u9762\u5c0d\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u9ad8\u6548\u5730\u5c0d\u6578\u64da\u5eab\u9032\u884c\u591a\u5217\u4fee\u6539\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u6280\u5de7\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8-sql-%e7%9a%84-update-%e8%aa%9e%e5%8f%a5-lvgswQASqb\">1. \u4f7f\u7528 SQL \u7684 UPDATE \u8a9e\u53e5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u6700\u5e38\u7528\u4f86\u4fee\u6539\u6578\u64da\u7684\u8a9e\u53e5\u662f <code>UPDATE<\/code>\u3002\u9019\u500b\u8a9e\u53e5\u5141\u8a31\u7528\u6236\u540c\u6642\u4fee\u6539\u591a\u500b\u5217\u7684\u6578\u64da\u3002\u57fa\u672c\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u52171 = \u503c1, \u52172 = \u503c2, ...\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u4e26\u4e14\u6211\u5011\u60f3\u8981\u540c\u6642\u66f4\u65b0\u54e1\u5de5\u7684\u59d3\u540d\u548c\u85aa\u6c34\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE employees\nSET name = '\u5f35\u4e09', salary = 50000\nWHERE id = 1;<\/code><\/pre>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8%e4%ba%8b%e5%8b%99%e4%be%86%e7%a2%ba%e4%bf%9d%e6%95%b8%e6%93%9a%e4%b8%80%e8%87%b4%e6%80%a7-lvgswQASqb\">2. \u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027<\/h2>\n<p>\u5728\u9032\u884c\u591a\u5217\u4fee\u6539\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u4e8b\u52d9\u5141\u8a31\u7528\u6236\u5c07\u591a\u500b\u64cd\u4f5c\u5305\u88dd\u5728\u4e00\u8d77\uff0c\u53ea\u6709\u7576\u6240\u6709\u64cd\u4f5c\u90fd\u6210\u529f\u6642\uff0c\u624d\u6703\u63d0\u4ea4\u66f4\u6539\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u90e8\u5206\u66f4\u65b0\u5c0e\u81f4\u7684\u6578\u64da\u4e0d\u4e00\u81f4\u554f\u984c\u3002<\/p>\n<pre><code>BEGIN;\n\nUPDATE employees\nSET name = '\u674e\u56db', salary = 60000\nWHERE id = 2;\n\nUPDATE employees\nSET name = '\u738b\u4e94', salary = 55000\nWHERE id = 3;\n\nCOMMIT;<\/code><\/pre>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0-lvgswQASqb\">3. \u4f7f\u7528\u6279\u91cf\u66f4\u65b0<\/h2>\n<p>\u5982\u679c\u9700\u8981\u5c0d\u591a\u689d\u8a18\u9304\u9032\u884c\u66f4\u65b0\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u6279\u91cf\u66f4\u65b0\u7684\u65b9\u5f0f\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u8207\u6578\u64da\u5eab\u7684\u4ea4\u4e92\u6b21\u6578\uff0c\u63d0\u9ad8\u6548\u7387\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE employees\nSET salary = CASE id\n    WHEN 1 THEN 50000\n    WHEN 2 THEN 60000\n    WHEN 3 THEN 55000\nEND\nWHERE id IN (1, 2, 3);<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u5beb\u6cd5\u4e0d\u50c5\u7c21\u6f54\uff0c\u9084\u80fd\u6709\u6548\u5730\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u64d4\u3002<\/p>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b-lvgswQASqb\">4. \u4f7f\u7528\u5b58\u5132\u904e\u7a0b<\/h2>\n<p>\u5c0d\u65bc\u9700\u8981\u983b\u7e41\u57f7\u884c\u7684\u591a\u5217\u4fee\u6539\u64cd\u4f5c\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5b58\u5132\u904e\u7a0b\u3002\u5b58\u5132\u904e\u7a0b\u662f\u4e00\u7d44\u9810\u7de8\u8b6f\u7684 SQL \u8a9e\u53e5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u57f7\u884c\u6548\u7387\u4e26\u6e1b\u5c11\u7db2\u7d61\u6d41\u91cf\u3002<\/p>\n<pre><code>CREATE PROCEDURE UpdateEmployeeSalary(IN emp_id INT, IN new_salary DECIMAL)\nBEGIN\n    UPDATE employees\n    SET salary = new_salary\n    WHERE id = emp_id;\nEND;<\/code><\/pre>\n<p>\u8abf\u7528\u5b58\u5132\u904e\u7a0b\u7684\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n<pre><code>CALL UpdateEmployeeSalary(1, 50000);<\/code><\/pre>\n<h2 id=\"5-%e6%b3%a8%e6%84%8f%e6%80%a7%e8%83%bd%e5%95%8f%e9%a1%8c-lvgswQASqb\">5. \u6ce8\u610f\u6027\u80fd\u554f\u984c<\/h2>\n<p>\u5728\u9032\u884c\u591a\u5217\u4fee\u6539\u6642\uff0c\u6027\u80fd\u662f\u9700\u8981\u8003\u616e\u7684\u91cd\u8981\u56e0\u7d20\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd WHERE \u689d\u4ef6\u80fd\u6709\u6548\u5229\u7528\u7d22\u5f15\uff0c\u6e1b\u5c11\u5168\u8868\u6383\u63cf\u3002<\/li>\n<li>\u907f\u514d\u5728 UPDATE \u8a9e\u53e5\u4e2d\u4f7f\u7528\u904e\u591a\u7684\u5217\uff0c\u50c5\u66f4\u65b0\u5fc5\u8981\u7684\u5217\u3002<\/li>\n<li>\u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7684\u7dad\u8b77\uff0c\u5982\u91cd\u5efa\u7d22\u5f15\u548c\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-lvgswQASqb\">\u7e3d\u7d50<\/h2>\n<p>\u9ad8\u6548\u5730\u5c0d\u6578\u64da\u5eab\u9032\u884c\u591a\u5217\u4fee\u6539\u9700\u8981\u638c\u63e1 SQL \u8a9e\u53e5\u7684\u4f7f\u7528\u3001\u4e8b\u52d9\u7684\u7ba1\u7406\u3001\u6279\u91cf\u66f4\u65b0\u7684\u6280\u5de7\u4ee5\u53ca\u5b58\u5132\u904e\u7a0b\u7684\u61c9\u7528\u3002\u901a\u904e\u9019\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u9ad8\u6548\u5730\u5c0d\u6578\u64da\u5eab\u9032\u884c\u591a\u5217\u4fee\u6539\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u64cd\u4f5c\u6b65\u9a5f\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u6e96\u78ba\u6027\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-173367","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173367","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=173367"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173367\/revisions"}],"predecessor-version":[{"id":173368,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173367\/revisions\/173368"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}