{"id":201032,"date":"2025-05-06T13:44:53","date_gmt":"2025-05-06T05:44:53","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201032\/"},"modified":"2025-05-06T13:44:53","modified_gmt":"2025-05-06T05:44:53","slug":"%e5%a6%82%e4%bd%95%e5%b0%86%e7%8e%b0%e6%9c%89%e8%a1%a8%e6%95%b0%e6%8d%ae%e6%8e%92%e5%ba%8f%e5%90%8e%e6%8f%92%e5%85%a5%e5%88%b0%e6%96%b0%e8%a1%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201032\/","title":{"rendered":"\u5982\u4f55\u5c06\u73b0\u6709\u8868\u6570\u636e\u6392\u5e8f\u540e\u63d2\u5165\u5230\u65b0\u8868\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u5c06\u73b0\u6709\u8868\u6570\u636e\u6392\u5e8f\u540e\u63d2\u5165\u5230\u65b0\u8868\uff1f<\/h1>\n<p>\u76ee\u524d\u4e3b\u673a\u5b9d\u8d1d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241126\/17326197486745ade4f3bfe.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5c06\u67e5\u8be2\u7ed3\u679c\u63d2\u5165\u65b0\u8868\u7684\u6280\u5de7<\/strong><\/p>\n<p>\u5e0c\u671b\u5c06\u73b0\u6709\u7684\u8868 old \u4e2d\u6392\u5e8f\u540e\u7684\u6570\u636e\u63d2\u5165\u65b0\u7684\u8868 new\uff0c\u4f46\u82e6\u4e8e\u627e\u4e0d\u5230\u6b63\u786e\u7684\u5b9e\u73b0\u65b9\u6cd5\u3002\u4ee5\u4e0b\u65b9\u6cd5\u5c06\u6307\u5bfc\u4f60\u6709\u6548\u5b8c\u6210\u8fd9\u4e00\u64cd\u4f5c\u3002<\/p>\n<p><strong>\u4f7f\u7528 insert into &#8230; select \u8bed\u6cd5<\/strong><\/p>\n<p>insert into &#8230; select \u8bed\u6cd5\u5141\u8bb8\u4f60\u4ece\u73b0\u6709\u8868\u4e2d\u9009\u62e9\u6570\u636e\u5e76\u5c06\u7ed3\u679c\u63d2\u5165\u5230\u65b0\u8868\u4e2d\u3002\u8981\u5c06\u67e5\u8be2\u7ed3\u679c\u63d2\u5165\u5230 new \u8868\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n<pre>INSERT INTO new\u8868\nSELECT null, name\nFROM old\u8868\nORDER BY name ASC;<\/pre>\n<p><strong>\u89e3\u91ca\uff1a<\/strong><\/p>\n<ul>\n<li>insert into new\u8868 \u6307\u5b9a\u8981\u63d2\u5165\u6570\u636e\u7684\u76ee\u6807\u8868\u3002<\/li>\n<li>select null, name \u4ece old \u8868\u4e2d\u9009\u62e9 name \u5b57\u6bb5\uff0c\u5e76\u5728\u524d\u9762\u6dfb\u52a0\u4e00\u4e2a null \u503c\u3002null \u503c\u7528\u4e8e\u63d2\u5165\u5230 new \u8868\u4e2d\u7f3a\u5c11\u81ea\u589e\u4e3b\u952e\u7684\u5217\u3002<\/li>\n<li>from old\u8868 \u6307\u5b9a\u8981\u4ece\u4e2d\u9009\u62e9\u6570\u636e\u7684\u539f\u8868\u3002<\/li>\n<li>order by name asc \u5bf9\u67e5\u8be2\u7ed3\u679c\u6309 name \u5b57\u6bb5\u5347\u5e8f\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<p>\u786e\u4fdd new \u8868\u5177\u6709\u4e0e old \u8868\u4e2d\u9009\u62e9\u5b57\u6bb5\u76f8\u5339\u914d\u7684\u5217\u7ed3\u6784\uff0c\u5305\u62ec\u5b57\u6bb5\u987a\u5e8f\u3002\u5426\u5219\uff0c\u63d2\u5165\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5931\u8d25\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5982\u4f55\u5c06\u73b0\u6709\u8868\u6570\u636e\u6392\u5e8f\u540e\u63d2\u5165\u5230\u65b0\u8868\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6570\u636e\u5e93\u77e5\u8bc6\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5c06\u73b0\u6709\u8868\u6570\u636e\u6392\u5e8f\u540e\u63d2\u5165\u5230\u65b0\u8868&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201032","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201032","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201032"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201032\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}