{"id":200384,"date":"2025-05-06T11:22:13","date_gmt":"2025-05-06T03:22:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200384\/"},"modified":"2025-05-06T11:22:13","modified_gmt":"2025-05-06T03:22:13","slug":"%e5%a6%82%e4%bd%95%e5%b0%86%e4%b9%b1%e5%ba%8f%e6%95%b0%e6%8d%ae%e4%bb%8e-old-%e8%a1%a8%e6%8e%92%e5%ba%8f%e5%90%8e%e6%8f%92%e5%85%a5-new-%e8%a1%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200384\/","title":{"rendered":"\u5982\u4f55\u5c06\u4e71\u5e8f\u6570\u636e\u4ece old \u8868\u6392\u5e8f\u540e\u63d2\u5165 new \u8868\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u5c06\u4e71\u5e8f\u6570\u636e\u4ece old \u8868\u6392\u5e8f\u540e\u63d2\u5165 new \u8868\uff1f<\/h1>\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241103\/173063704667276cf6acabf.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5c06\u67e5\u8be2\u7ed3\u679c\u63d2\u5165\u65b0\u8868<\/strong><\/p>\n<p>\u5bf9\u4e8e\u6307\u5b9a\u7684\u4e24\u5f20\u8868 old \u548c new\uff0cold \u8868\u4e2d\u6709\u6570\u636e\uff0c\u800c new \u8868\u4e2d\u6ca1\u6709\uff0c\u4e14\u4e24\u8005\u7684\u8868\u7ed3\u6784\u76f8\u540c\u3002\u73b0\u9700\u8981\u5bf9 old \u8868\u4e2d\u7684\u4e00\u7cfb\u5217\u4e71\u5e8f\u6570\u636e\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u5c06\u6392\u5e8f\u7ed3\u679c\u63d2\u5165\u5230 new \u8868\u4e2d\u3002<\/p>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b sql \u8bed\u53e5\uff1a<\/p>\n<pre>INSERT INTO new\u8868\nSELECT null, name\nFROM old\u8868\nORDER BY name ASC;<\/pre>\n<p>\u5728\u6b64\u8bed\u53e5\u4e2d\uff1a<\/p>\n<ul>\n<li>insert into: \u6307\u5b9a\u5c06\u6570\u636e\u63d2\u5165\u5230 new \u8868\u4e2d\u3002<\/li>\n<li>new\u8868: \u6307\u5b9a\u8981\u63d2\u5165\u6570\u636e\u7684\u8868\u540d\u79f0\u3002<\/li>\n<li>select: \u6307\u5b9a\u8981\u4ece old \u8868\u4e2d\u9009\u62e9\u7684\u5217\u3002<\/li>\n<li>null: \u4f5c\u4e3a new \u8868\u4e2d\u81ea\u589e\u5217\uff08\u901a\u5e38\u4e3a id \u5217\uff09\u7684\u5360\u4f4d\u7b26\u3002<\/li>\n<li>name: \u6307\u5b9a\u8981\u6392\u5e8f\u7684\u5b57\u6bb5\u3002<\/li>\n<li>order by: \u6307\u5b9a\u5bf9 name \u5b57\u6bb5\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u4f7f\u7528 insert into &#8230; select \u8bed\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06 old \u8868\u4e2d\u6309 name \u5b57\u6bb5\u5347\u5e8f\u6392\u5e8f\u540e\u7684\u7ed3\u679c\u63d2\u5165\u5230 new \u8868\u4e2d\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e24\u5f20\u8868\u7684\u5b57\u6bb5\u987a\u5e8f\u5fc5\u987b\u5bf9\u5e94\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u63d2\u5165\u9519\u8bef\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5982\u4f55\u5c06\u4e71\u5e8f\u6570\u636e\u4ece old \u8868\u6392\u5e8f\u540e\u63d2\u5165 new \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\u4e71\u5e8f\u6570\u636e\u4ece old \u8868\u6392\u5e8f&#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-200384","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200384","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=200384"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200384\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}