{"id":166583,"date":"2024-11-05T17:27:26","date_gmt":"2024-11-05T09:27:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166583\/"},"modified":"2024-11-05T17:27:27","modified_gmt":"2024-11-05T09:27:27","slug":"%e5%bf%ab%e9%80%9f%e4%bf%ae%e6%94%b9%e8%a1%a8%e6%a0%bc%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%8c%e6%89%b9%e9%87%8f%e8%99%95%e7%90%86%e6%8a%80%e5%b7%a7%ef%bc%81-%e6%80%8e%e9%ba%bc%e6%89%b9%e9%87%8f%e4%bf%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166583\/","title":{"rendered":"\u5feb\u901f\u4fee\u6539\u8868\u683c\u6578\u64da\u5eab\uff0c\u6279\u91cf\u8655\u7406\u6280\u5de7\uff01 (\u600e\u9ebc\u6279\u91cf\u4fee\u6539\u8868\u683c\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e4%bf%ae%e6%94%b9%e8%a1%a8%e6%a0%bc%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%8c%e6%89%b9%e9%87%8f%e8%99%95%e7%90%86%e6%8a%80%e5%b7%a7%ef%bc%81-RjLrGyNQEs\">\u5feb\u901f\u4fee\u6539\u8868\u683c\u6578\u64da\u5eab\uff0c\u6279\u91cf\u8655\u7406\u6280\u5de7\uff01<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u7dad\u8b77\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u5c24\u5176\u662f\u5728\u9700\u8981\u5feb\u901f\u4fee\u6539\u5927\u91cf\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\uff0c\u638c\u63e1\u6279\u91cf\u8655\u7406\u7684\u6280\u5de7\u986f\u5f97\u5c24\u70ba\u95dc\u9375\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u5730\u6279\u91cf\u4fee\u6539\u8868\u683c\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u6280\u5de7\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%89%b9%e9%87%8f%e8%99%95%e7%90%86%ef%bc%9f-RjLrGyNQEs\">\u4ec0\u9ebc\u662f\u6279\u91cf\u8655\u7406\uff1f<\/h2>\n<p>\u6279\u91cf\u8655\u7406\u662f\u6307\u4e00\u6b21\u6027\u5c0d\u591a\u689d\u6578\u64da\u9032\u884c\u64cd\u4f5c\u7684\u904e\u7a0b\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6548\u7387\uff0c\u9084\u80fd\u6e1b\u5c11\u624b\u52d5\u64cd\u4f5c\u7684\u932f\u8aa4\u3002\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6279\u91cf\u8655\u7406\u901a\u5e38\u7528\u65bc\u66f4\u65b0\u3001\u522a\u9664\u6216\u63d2\u5165\u591a\u689d\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9%ef%bc%9f-RjLrGyNQEs\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6279\u91cf\u4fee\u6539\uff1f<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u6548\u7387\uff1a<\/strong>\u624b\u52d5\u4fee\u6539\u6578\u64da\u4e0d\u50c5\u8017\u6642\uff0c\u9084\u5bb9\u6613\u51fa\u932f\u3002\u6279\u91cf\u8655\u7406\u53ef\u4ee5\u5728\u77ed\u6642\u9593\u5167\u5b8c\u6210\u5927\u91cf\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u932f\u8aa4\uff1a<\/strong>\u901a\u904e\u4f7f\u7528\u81ea\u52d5\u5316\u8173\u672c\u6216SQL\u8a9e\u53e5\uff0c\u53ef\u4ee5\u6e1b\u5c11\u56e0\u624b\u52d5\u64cd\u4f5c\u800c\u7522\u751f\u7684\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4fbf\u65bc\u7ba1\u7406\uff1a<\/strong>\u5728\u6578\u64da\u91cf\u9f90\u5927\u7684\u60c5\u6cc1\u4e0b\uff0c\u6279\u91cf\u4fee\u6539\u53ef\u4ee5\u5e6b\u52a9\u7ba1\u7406\u8005\u66f4\u597d\u5730\u63a7\u5236\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9%e8%a1%a8%e6%a0%bc%e6%95%b8%e6%93%9a%e5%ba%ab-RjLrGyNQEs\">\u5982\u4f55\u6279\u91cf\u4fee\u6539\u8868\u683c\u6578\u64da\u5eab<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6279\u91cf\u4fee\u6539\u65b9\u6cd5\uff0c\u4e3b\u8981\u4ee5SQL\u8a9e\u53e5\u70ba\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8update%e8%aa%9e%e5%8f%a5-RjLrGyNQEs\">1. \u4f7f\u7528UPDATE\u8a9e\u53e5<\/h3>\n<p>UPDATE\u8a9e\u53e5\u662f\u6700\u5e38\u7528\u7684\u6279\u91cf\u4fee\u6539\u65b9\u6cd5\u3002\u901a\u904eWHERE\u5b50\u53e5\uff0c\u53ef\u4ee5\u6307\u5b9a\u9700\u8981\u4fee\u6539\u7684\u8a18\u9304\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\u683c\uff0c\u4e26\u5e0c\u671b\u5c07\u6240\u6709\u5e74\u9f61\u5927\u65bc30\u6b72\u7684\u7528\u6236\u7684\u72c0\u614b\u8a2d\u7f6e\u70ba\u201cinactive\u201d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE users\nSET status = 'inactive'\nWHERE age &gt; 30;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8case%e8%aa%9e%e5%8f%a5%e9%80%b2%e8%a1%8c%e6%a2%9d%e4%bb%b6%e6%9b%b4%e6%96%b0-RjLrGyNQEs\">2. \u4f7f\u7528CASE\u8a9e\u53e5\u9032\u884c\u689d\u4ef6\u66f4\u65b0<\/h3>\n<p>\u5982\u679c\u9700\u8981\u6839\u64da\u4e0d\u540c\u7684\u689d\u4ef6\u5c0d\u4e0d\u540c\u7684\u8a18\u9304\u9032\u884c\u66f4\u65b0\uff0c\u53ef\u4ee5\u4f7f\u7528CASE\u8a9e\u53e5\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u5e0c\u671b\u6839\u64da\u7528\u6236\u7684\u5e74\u9f61\u4f86\u8a2d\u7f6e\u4e0d\u540c\u7684\u72c0\u614b\uff1a<\/p>\n<pre><code>UPDATE users\nSET status = CASE\n    WHEN age &lt; 18 THEN 'minor'\n    WHEN age BETWEEN 18 AND 30 THEN 'young'\n    ELSE 'adult'\nEND;<\/code><\/pre>\n<h3 id=\"3-%e6%89%b9%e9%87%8f%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-RjLrGyNQEs\">3. \u6279\u91cf\u63d2\u5165\u6578\u64da<\/h3>\n<p>\u9664\u4e86\u66f4\u65b0\uff0c\u6279\u91cf\u63d2\u5165\u6578\u64da\u4e5f\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u53ef\u4ee5\u4f7f\u7528INSERT INTO\u8a9e\u53e5\u4f86\u4e00\u6b21\u6027\u63d2\u5165\u591a\u689d\u8a18\u9304\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>INSERT INTO users (name, age, status)\nVALUES \n    ('Alice', 25, 'active'),\n    ('Bob', 32, 'inactive'),\n    ('Charlie', 28, 'active');<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b-RjLrGyNQEs\">4. \u4f7f\u7528\u5b58\u5132\u904e\u7a0b<\/h3>\n<p>\u5c0d\u65bc\u66f4\u8907\u96dc\u7684\u6279\u91cf\u8655\u7406\u9700\u6c42\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5b58\u5132\u904e\u7a0b\u3002\u5b58\u5132\u904e\u7a0b\u5141\u8a31\u7528\u6236\u5c07\u591a\u689dSQL\u8a9e\u53e5\u5c01\u88dd\u5728\u4e00\u8d77\uff0c\u4e26\u901a\u904e\u4e00\u500b\u8abf\u7528\u4f86\u57f7\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE PROCEDURE UpdateUserStatus()\nBEGIN\n    UPDATE users SET status = 'inactive' WHERE age &gt; 30;\n    UPDATE users SET status = 'young' WHERE age BETWEEN 18 AND 30;\nEND;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-RjLrGyNQEs\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u6279\u91cf\u4fee\u6539\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u51fa\u73fe\u610f\u5916\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u4fee\u6539\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884c\u6279\u91cf\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9032\u884c\u9a57\u8b49\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u5eab\uff0c\u6279\u91cf\u64cd\u4f5c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u61c9\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9032\u884c\u8abf\u6574\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RjLrGyNQEs\">\u7e3d\u7d50<\/h2>\n<p>\u6279\u91cf\u4fee\u6539\u8868\u683c\u6578\u64da\u5eab\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u7ba1\u7406\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002\u901a\u904e\u4f7f\u7528SQL\u8a9e\u53e5\u3001\u5b58\u5132\u904e\u7a0b\u7b49\u65b9\u6cd5\uff0c\u7ba1\u7406\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5c0d\u5927\u91cf\u6578\u64da\u9032\u884c\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u66f4\u65b0\u3001\u63d2\u5165\u9084\u662f\u522a\u9664\uff0c\u638c\u63e1\u9019\u4e9b\u6280\u5de7\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u5eab\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5b58\u5132\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u80fd\u5920\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u7a69\u5b9a\u7684\u57fa\u790e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u4fee\u6539\u8868\u683c\u6578\u64da\u5eab\u7684\u6280\u5de7\uff0c\u5b78\u7fd2\u5982\u4f55\u6279\u91cf\u8655\u7406\u6578\u64da\uff0c\u63d0\u5347\u6548\u7387\uff0c\u7c21\u5316\u5de5\u4f5c\u6d41\u7a0b\uff0c\u8b93\u6578\u64da\u7ba1\u7406\u66f4\u8f15\u9b06\uff01<\/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-166583","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166583","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=166583"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166583\/revisions"}],"predecessor-version":[{"id":166584,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166583\/revisions\/166584"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}