{"id":179320,"date":"2024-11-09T00:50:19","date_gmt":"2024-11-08T16:50:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179320\/"},"modified":"2024-11-09T00:50:19","modified_gmt":"2024-11-08T16:50:19","slug":"%e5%a6%82%e4%bd%95%e7%94%a8-n-r-%e6%9b%bf%e6%8f%9b%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab-n-r-%e6%80%8e%e9%ba%bc%e6%9b%bf%e6%8f%9b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179320\/","title":{"rendered":"\u5982\u4f55\u7528 N R \u66ff\u63db\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff1f (\u6578\u64da\u5eab n r \u600e\u9ebc\u66ff\u63db)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e7%94%a8-n-r-%e6%9b%bf%e6%8f%9b%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab-n-r-%e6%80%8e%e9%ba%bc%e6%9b%bf%e6%8f%9b-QHbYYceshm\">\u5982\u4f55\u7528 N R \u66ff\u63db\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff1f (\u6578\u64da\u5eab n r \u600e\u9ebc\u66ff\u63db)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u7684\u66ff\u63db\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u56e0\u70ba\u6578\u64da\u932f\u8aa4\u3001\u66f4\u65b0\u9700\u6c42\uff0c\u9084\u662f\u6578\u64da\u7d50\u69cb\u7684\u8b8a\u5316\uff0c\u80fd\u5920\u6709\u6548\u5730\u66ff\u63db\u6578\u64da\u662f\u78ba\u4fdd\u6578\u64da\u5eab\u5065\u5eb7\u904b\u884c\u7684\u95dc\u9375\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 N R \u4f86\u66ff\u63db\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"n-r-%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-QHbYYceshm\">N R \u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>N R \u662f\u4e00\u7a2e\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u7c21\u7a31\uff0c\u901a\u5e38\u6307\u7684\u662f\u300c\u66f4\u65b0\u300d\u548c\u300c\u66ff\u63db\u300d\u7684\u904e\u7a0b\u3002\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u9019\u4e9b\u64cd\u4f5c\u53ef\u4ee5\u901a\u904e SQL \u8a9e\u53e5\u4f86\u5be6\u73fe\u3002N R \u7684\u4e3b\u8981\u76ee\u7684\u662f\u5728\u4e0d\u5f71\u97ff\u6578\u64da\u5b8c\u6574\u6027\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u6578\u64da\u9032\u884c\u5fc5\u8981\u7684\u4fee\u6539\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-sql-%e8%aa%9e%e5%8f%a5%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e6%9b%bf%e6%8f%9b-QHbYYceshm\">\u4f7f\u7528 SQL \u8a9e\u53e5\u9032\u884c\u6578\u64da\u66ff\u63db<\/h2>\n<p>\u5728\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u4f7f\u7528 SQL \u8a9e\u53e5\u4f86\u66ff\u63db\u6578\u64da\u662f\u6700\u5e38\u898b\u7684\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684 SQL \u8a9e\u53e5\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u9032\u884c\u6578\u64da\u66ff\u63db\u3002<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-update-%e8%aa%9e%e5%8f%a5-QHbYYceshm\">1. \u4f7f\u7528 UPDATE \u8a9e\u53e5<\/h3>\n<p>UPDATE \u8a9e\u53e5\u662f\u7528\u4f86\u4fee\u6539\u6578\u64da\u5eab\u4e2d\u73fe\u6709\u8a18\u9304\u7684\u4e3b\u8981\u5de5\u5177\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u5217\u540d = \u65b0\u503c\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u300c\u7528\u6236\u300d\u7684\u8868\uff0c\u4e26\u5e0c\u671b\u5c07\u7528\u6236 ID \u70ba 1 \u7684\u7528\u6236\u540d\u7a31\u66f4\u65b0\u70ba\u300c\u5f35\u4e09\u300d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE \u7528\u6236\nSET \u540d\u7a31 = '\u5f35\u4e09'\nWHERE \u7528\u6236ID = 1;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-replace-%e8%aa%9e%e5%8f%a5-QHbYYceshm\">2. \u4f7f\u7528 REPLACE \u8a9e\u53e5<\/h3>\n<p>REPLACE \u8a9e\u53e5\u53ef\u4ee5\u7528\u4f86\u63d2\u5165\u65b0\u8a18\u9304\u6216\u66ff\u63db\u5df2\u5b58\u5728\u7684\u8a18\u9304\u3002\u7576\u6307\u5b9a\u7684\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u5df2\u5b58\u5728\u6642\uff0cREPLACE \u5c07\u522a\u9664\u8a72\u8a18\u9304\u4e26\u63d2\u5165\u65b0\u8a18\u9304\u3002\u4ee5\u4e0b\u662f REPLACE \u8a9e\u53e5\u7684\u57fa\u672c\u683c\u5f0f\uff1a<\/p>\n<pre><code>REPLACE INTO \u8868\u540d (\u52171, \u52172, ...)\nVALUES (\u503c1, \u503c2, ...);<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u8981\u66ff\u63db\u7528\u6236 ID \u70ba 1 \u7684\u7528\u6236\u8cc7\u6599\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>REPLACE INTO \u7528\u6236 (\u7528\u6236ID, \u540d\u7a31, \u96fb\u5b50\u90f5\u4ef6)\nVALUES (1, '\u674e\u56db', 'lisi@example.com');<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-QHbYYceshm\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u66ff\u63db\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u4efb\u4f55\u6578\u64da\u66ff\u63db\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u74b0\u5883\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884c\u66ff\u63db\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9032\u884c\u6e2c\u8a66\uff0c\u4ee5\u78ba\u4fdd\u64cd\u4f5c\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5728\u9032\u884c\u591a\u6b65\u9a5f\u7684\u6578\u64da\u66ff\u63db\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-QHbYYceshm\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528 N R \u66ff\u63db\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u662f\u4e00\u500b\u91cd\u8981\u7684\u6280\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u6709\u6548\u5730\u7dad\u8b77\u548c\u66f4\u65b0\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528 SQL \u7684 UPDATE \u548c REPLACE \u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u9748\u6d3b\u5730\u9032\u884c\u6578\u64da\u66ff\u63db\u64cd\u4f5c\u3002\u5728\u9032\u884c\u9019\u4e9b\u64cd\u4f5c\u6642\uff0c\u52d9\u5fc5\u6ce8\u610f\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u7ba1\u7406\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u66ff\u63db\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528 R \u8a9e\u8a00\u66ff\u63db\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u638c\u63e1\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\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-179320","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179320","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=179320"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179320\/revisions"}],"predecessor-version":[{"id":179321,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179320\/revisions\/179321"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}