{"id":186208,"date":"2024-11-11T04:00:23","date_gmt":"2024-11-10T20:00:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186208\/"},"modified":"2024-11-11T04:00:24","modified_gmt":"2024-11-10T20:00:24","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%83%a8%e5%88%86%e6%9b%bf%e6%8f%9b%e8%aa%9e%e5%8f%a5%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e6%9b%b4%e6%96%b0%ef%bc%88%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186208\/","title":{"rendered":"\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\uff1a\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\u5be6\u73fe\u6578\u64da\u66f4\u65b0\uff08\u6578\u64da\u5eab\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%83%a8%e5%88%86%e6%9b%bf%e6%8f%9b%e8%aa%9e%e5%8f%a5%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e6%9b%b4%e6%96%b0-MFKltsKSma\">\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\uff1a\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\u5be6\u73fe\u6578\u64da\u66f4\u65b0<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7121\u8ad6\u662f\u7db2\u7ad9\u3001\u79fb\u52d5\u61c9\u7528\u9084\u662f\u4f01\u696d\u5167\u90e8\u7cfb\u7d71\uff0c\u6578\u64da\u5eab\u90fd\u626e\u6f14\u8457\u5b58\u5132\u548c\u7ba1\u7406\u6578\u64da\u7684\u91cd\u8981\u89d2\u8272\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\u4f86\u5be6\u73fe\u6578\u64da\u66f4\u65b0\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%e9%83%a8%e5%88%86%e6%9b%bf%e6%8f%9b%e8%aa%9e%e5%8f%a5%ef%bc%9f-MFKltsKSma\">\u4ec0\u9ebc\u662f\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\uff1f<\/h2>\n<p>\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\uff08Partial Update Statement\uff09\u662f\u6307\u5728\u66f4\u65b0\u6578\u64da\u5eab\u4e2d\u7684\u8a18\u9304\u6642\uff0c\u53ea\u66f4\u65b0\u7279\u5b9a\u7684\u5b57\u6bb5\uff0c\u800c\u4e0d\u662f\u6574\u500b\u8a18\u9304\u3002\u9019\u7a2e\u65b9\u6cd5\u5728\u8655\u7406\u5927\u578b\u6578\u64da\u96c6\u6642\u7279\u5225\u6709\u7528\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u7684\u91cf\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-sql-%e9%80%b2%e8%a1%8c%e9%83%a8%e5%88%86%e6%9b%bf%e6%8f%9b-MFKltsKSma\">\u4f7f\u7528 SQL \u9032\u884c\u90e8\u5206\u66ff\u63db<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u66f4\u65b0\u64cd\u4f5c\u901a\u5e38\u4f7f\u7528 <code>UPDATE<\/code> \u8a9e\u53e5\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u66f4\u65b0\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u6b04\u4f4d1 = \u65b0\u503c1, \u6b04\u4f4d2 = \u65b0\u503c2\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u53ea\u60f3\u66f4\u65b0\u67d0\u4e00\u500b\u6b04\u4f4d\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u6b04\u4f4d1 = \u65b0\u503c1\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e6%9b%b4%e6%96%b0%e7%94%a8%e6%88%b6%e4%bf%a1%e6%81%af-MFKltsKSma\">\u793a\u4f8b\uff1a\u66f4\u65b0\u7528\u6236\u4fe1\u606f<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7528\u6236\u8868 <code>users<\/code>\uff0c\u5176\u4e2d\u5305\u542b\u7528\u6236\u7684\u59d3\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u3002\u5982\u679c\u6211\u5011\u53ea\u60f3\u66f4\u65b0\u67d0\u500b\u7528\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE users\nSET email = 'newemail@example.com'\nWHERE id = 1;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u64cd\u4f5c\u4e0d\u50c5\u7c21\u55ae\uff0c\u800c\u4e14\u9ad8\u6548\uff0c\u56e0\u70ba\u5b83\u53ea\u91dd\u5c0d\u9700\u8981\u66f4\u65b0\u7684\u6b04\u4f4d\u9032\u884c\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%a2%9d%e4%bb%b6%e8%aa%9e%e5%8f%a5%e9%80%b2%e8%a1%8c%e7%b2%be%e7%a2%ba%e6%9b%b4%e6%96%b0-MFKltsKSma\">\u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5\u9032\u884c\u7cbe\u78ba\u66f4\u65b0<\/h2>\n<p>\u5728\u9032\u884c\u90e8\u5206\u66ff\u63db\u6642\uff0c\u4f7f\u7528 <code>WHERE<\/code> \u689d\u4ef6\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u7b26\u5408\u689d\u4ef6\u7684\u8a18\u9304\u6703\u88ab\u66f4\u65b0\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u66f4\u65b0\u6240\u6709\u96fb\u5b50\u90f5\u4ef6\u4ee5 &#8216;@example.com&#8217; \u7d50\u5c3e\u7684\u7528\u6236\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>UPDATE users\nSET email = 'updated@example.com'\nWHERE email LIKE '%@example.com';<\/code><\/pre>\n<h3 id=\"%e9%81%bf%e5%85%8d%e5%b8%b8%e8%a6%8b%e9%8c%af%e8%aa%a4-MFKltsKSma\">\u907f\u514d\u5e38\u898b\u932f\u8aa4<\/h3>\n<p>\u5728\u4f7f\u7528\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\u6642\uff0c\u6709\u5e7e\u500b\u5e38\u898b\u7684\u932f\u8aa4\u9700\u8981\u907f\u514d\uff1a<\/p>\n<ul>\n<li><strong>\u672a\u4f7f\u7528 WHERE \u689d\u4ef6\uff1a<\/strong>\u5982\u679c\u4e0d\u52a0 <code>WHERE<\/code> \u689d\u4ef6\uff0c\u5c07\u6703\u66f4\u65b0\u6574\u500b\u8868\u7684\u6240\u6709\u8a18\u9304\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li><strong>\u66f4\u65b0\u4e0d\u5fc5\u8981\u7684\u6b04\u4f4d\uff1a<\/strong>\u53ea\u66f4\u65b0\u9700\u8981\u6539\u8b8a\u7684\u6b04\u4f4d\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u5beb\u5165\u3002<\/li>\n<li><strong>\u672a\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u5927\u898f\u6a21\u66f4\u65b0\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u51fa\u73fe\u610f\u5916\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-MFKltsKSma\">\u7d50\u8ad6<\/h2>\n<p>\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u66f4\u65b0\u65b9\u6cd5\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u63d0\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6027\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528 SQL \u8a9e\u53e5\u548c\u689d\u4ef6\u8a9e\u53e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u7cbe\u78ba\u5730\u63a7\u5236\u6578\u64da\u66f4\u65b0\u7684\u904e\u7a0b\uff0c\u5f9e\u800c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u932f\u8aa4\u548c\u6578\u64da\u640d\u5931\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\uff0c\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528\u90e8\u5206\u66ff\u63db\u8a9e\u53e5\u9ad8\u6548\u5be6\u73fe\u6578\u64da\u66f4\u65b0\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-186208","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186208","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=186208"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186208\/revisions"}],"predecessor-version":[{"id":186209,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186208\/revisions\/186209"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}