{"id":7048,"date":"2024-11-14T11:31:07","date_gmt":"2024-11-14T03:31:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7048\/"},"modified":"2024-11-14T11:31:07","modified_gmt":"2024-11-14T03:31:07","slug":"%e5%a6%82%e4%bd%95%e5%b0%86%e8%ae%be%e5%a4%87%e7%b1%bb%e5%88%ab%e8%a1%a8%e6%95%b0%e6%8d%ae%e5%a1%ab%e5%85%85%e8%87%b3%e8%ae%be%e5%a4%87%e8%a1%a8%e4%b8%ad%e7%9a%84-device_category_name-%e5%ad%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7048\/","title":{"rendered":"\u5982\u4f55\u5c06\u8bbe\u5907\u7c7b\u522b\u8868\u6570\u636e\u586b\u5145\u81f3\u8bbe\u5907\u8868\u4e2d\u7684 device_category_name \u5b57\u6bb5\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173035451233020.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u5c06\u8bbe\u5907\u7c7b\u522b\u8868\u6570\u636e\u586b\u5145\u81f3\u8bbe\u5907\u8868\u4e2d\u7684 device_category_name \u5b57\u6bb5\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u5c06\u8bbe\u5907\u7c7b\u522b\u8868\u6570\u636e\u586b\u5145\u81f3\u8bbe\u5907\u8868\u4e2d\u7684 device_category_name \u5b57\u6bb5\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u901a\u8fc7\u4e2d\u95f4\u67e5\u8be2\u7ed3\u679c\u586b\u5145\u6570\u636e<\/strong><\/p>\n<p>\u5728\u5df2\u6709\u7684\u8bbe\u5907\u7c7b\u522b\u8868\u548c\u8bbe\u5907\u8868\u7684\u57fa\u7840\u4e0a\uff0c\u7cfb\u7edf\u9700\u8981\u6dfb\u52a0\u4e00\u4e2a\u5b57\u6bb5 device_category_name \u5230\u8bbe\u5907\u8868\u4e2d\uff0c\u5e76\u4f7f\u7528\u8bbe\u5907\u7c7b\u522b\u8868\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u586b\u5145\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p><strong>1. \u51c6\u5907\u5de5\u4f5c<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u5728\u8bbe\u5907\u8868\u4e2d\u6dfb\u52a0 device_category_name \u5217\uff1a<\/p>\n<pre>alter table device add column device_category_name varchar(100);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>2. \u66f4\u65b0\u6570\u636e<\/strong><\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u4f7f\u7528\u4e2d\u95f4\u67e5\u8be2\u7ed3\u679c\u6765\u66f4\u65b0\u6570\u636e\uff1a<\/p>\n<pre>UPDATE device, device_category AS dc\nSET device.device_category_name = dc.name\nWHERE dc.id = device.device_category_id;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8be5\u67e5\u8be2\u5c06\u9010\u884c\u5339\u914d\u8bbe\u5907\u8868\u548c\u8bbe\u5907\u7c7b\u522b\u8868\u4e2d\u7684\u8bb0\u5f55\uff0c\u5e76\u5c06\u8bbe\u5907\u7c7b\u522b\u8868\u4e2d\u7684 name \u590d\u5236\u5230\u8bbe\u5907\u8868\u4e2d\u7684 device_category_name \u5217\u4e2d\u3002<\/p>\n<p><strong>3. \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<p>\u5728\u6267\u884c\u4e0a\u8ff0\u64cd\u4f5c\u524d\uff0c<strong>\u8bf7\u52a1\u5fc5\u5907\u4efd\u6570\u636e<\/strong>\u3002\u53e6\u5916\uff0c\u8bf7\u786e\u4fdd\u8bbe\u5907\u7c7b\u522b\u8868\u548c\u8bbe\u5907\u8868\u7684 id \u5217\u5177\u6709\u552f\u4e00\u7ea6\u675f\uff0c\u4ee5\u907f\u514d\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n<p><strong>4. \u5728\u7ebf\u6d4b\u8bd5<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 [sql fiddle](http:\/\/sqlfiddle.com\/#!9\/628d9f\/1) \u5728\u7ebf\u6d4b\u8bd5\u4e0a\u8ff0\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5c06\u8bbe\u5907\u7c7b\u522b\u8868\u6570\u636e\u586b\u5145\u81f3\u8bbe\u5907\u8868\u4e2d\u7684 device_category_name \u5b57\u6bb5\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u901a\u8fc7\u4e2d\u95f4\u67e5\u8be2\u7ed3\u679c\u586b\u5145\u6570\u636e \u5728\u5df2\u6709\u7684\u8bbe\u5907\u7c7b\u522b\u8868\u548c\u8bbe\u5907\u8868\u7684\u57fa\u7840\u4e0a\uff0c\u7cfb\u7edf\u9700\u8981\u6dfb\u52a0\u4e00\u4e2a\u5b57\u6bb5 device_category_name \u5230\u8bbe\u5907\u8868\u4e2d\uff0c\u5e76\u4f7f\u7528\u8bbe\u5907\u7c7b\u522b\u8868\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u586b\u5145\u3002 \u89e3\u51b3\u65b9\u6848 1. \u51c6\u5907\u5de5\u4f5c \u9996\u5148\uff0c\u5728\u8bbe\u5907\u8868\u4e2d\u6dfb\u52a0 device_category_name \u5217\uff1a alter table device add column device_category_name varchar(100); \u767b\u5f55\u540e\u590d\u5236 2. \u66f4\u65b0\u6570\u636e \u63a5\u4e0b\u6765\uff0c\u4f7f\u7528\u4e2d\u95f4\u67e5\u8be2\u7ed3\u679c\u6765\u66f4\u65b0\u6570\u636e\uff1a UPDATE device, device_category AS dc SET device.device_category_name = dc.name WHERE dc.id = device.device_category_id; \u767b\u5f55\u540e\u590d\u5236 \u8be5\u67e5\u8be2\u5c06\u9010\u884c\u5339\u914d\u8bbe\u5907\u8868\u548c\u8bbe\u5907\u7c7b\u522b\u8868\u4e2d\u7684\u8bb0\u5f55\uff0c\u5e76\u5c06\u8bbe\u5907\u7c7b\u522b\u8868\u4e2d\u7684 name \u590d\u5236\u5230\u8bbe\u5907\u8868\u4e2d\u7684 device_category_name \u5217\u4e2d\u3002 3. \u6ce8\u610f\u4e8b\u9879 \u5728\u6267\u884c\u4e0a\u8ff0\u64cd\u4f5c\u524d\uff0c\u8bf7\u52a1\u5fc5\u5907\u4efd\u6570\u636e\u3002\u53e6\u5916\uff0c\u8bf7\u786e\u4fdd\u8bbe\u5907\u7c7b\u522b\u8868\u548c\u8bbe\u5907\u8868\u7684 id \u5217\u5177\u6709\u552f\u4e00\u7ea6\u675f\uff0c\u4ee5\u907f\u514d\u6570\u636e\u4e0d\u4e00\u81f4\u3002 4. \u5728\u7ebf\u6d4b\u8bd5 \u53ef\u4ee5\u4f7f\u7528 [sql fiddle](http:\/\/sqlfiddle.com\/#!9\/628d9f\/1) \u5728\u7ebf\u6d4b\u8bd5\u4e0a\u8ff0\u89e3\u51b3\u65b9\u6848\u3002 \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5c06\u8bbe\u5907\u7c7b\u522b\u8868\u6570\u636e\u586b\u5145\u81f3\u8bbe\u5907\u8868\u4e2d\u7684 device_category_name \u5b57\u6bb5\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7048","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=7048"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7048\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}