{"id":179882,"date":"2024-11-09T05:35:17","date_gmt":"2024-11-08T21:35:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179882\/"},"modified":"2024-11-09T05:35:18","modified_gmt":"2024-11-08T21:35:18","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%b7%bb%e5%8a%a0%e6%96%b0%e7%9a%84%e5%88%97%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%9c%a8%e6%8c%87%e5%ae%9a%e5%9c%b0%e6%96%b9%e5%a2%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179882\/","title":{"rendered":"\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u6dfb\u52a0\u65b0\u7684\u5217\uff1f (\u6578\u64da\u5eab\u5728\u6307\u5b9a\u5730\u65b9\u589e\u52a0\u5217)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%b7%bb%e5%8a%a0%e6%96%b0%e7%9a%84%e5%88%97%ef%bc%9f-iyrdTWXJuf\">\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u6dfb\u52a0\u65b0\u7684\u5217\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6dfb\u52a0\u65b0\u7684\u5217\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u64f4\u5c55\u6578\u64da\u7d50\u69cb\u4ee5\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u6dfb\u52a0\u65b0\u7684\u5217\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%97%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-iyrdTWXJuf\">\u6578\u64da\u5eab\u5217\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u8868\u7531\u884c\u548c\u5217\u7d44\u6210\u3002\u6bcf\u4e00\u5217\u4ee3\u8868\u4e00\u500b\u7279\u5b9a\u7684\u6578\u64da\u5c6c\u6027\uff0c\u800c\u6bcf\u4e00\u884c\u5247\u4ee3\u8868\u4e00\u500b\u6578\u64da\u5be6\u4f8b\u3002\u7576\u696d\u52d9\u9700\u6c42\u8b8a\u5316\u6642\uff0c\u53ef\u80fd\u9700\u8981\u5728\u73fe\u6709\u7684\u8868\u4e2d\u6dfb\u52a0\u65b0\u7684\u5217\uff0c\u4ee5\u5b58\u5132\u984d\u5916\u7684\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-sql-%e8%aa%9e%e5%8f%a5%e6%b7%bb%e5%8a%a0%e5%88%97-iyrdTWXJuf\">\u4f7f\u7528 SQL \u8a9e\u53e5\u6dfb\u52a0\u5217<\/h2>\n<p>\u5728\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 SQL \u7684 ALTER TABLE \u8a9e\u53e5\u4f86\u6dfb\u52a0\u65b0\u7684\u5217\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d ADD \u5217\u540d \u6578\u64da\u985e\u578b;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\uff0c\u4e26\u5e0c\u671b\u6dfb\u52a0\u4e00\u500b\u540d\u70ba <code>age<\/code> \u7684\u6574\u6578\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE users ADD age INT;<\/code><\/pre>\n<h2 id=\"%e6%8c%87%e5%ae%9a%e5%88%97%e7%9a%84%e4%bd%8d%e7%bd%ae-iyrdTWXJuf\">\u6307\u5b9a\u5217\u7684\u4f4d\u7f6e<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5728\u7279\u5b9a\u4f4d\u7f6e\u6dfb\u52a0\u65b0\u5217\u3002\u96d6\u7136 SQL \u6a19\u6e96\u4e0d\u652f\u6301\u76f4\u63a5\u5728\u6307\u5b9a\u4f4d\u7f6e\u6dfb\u52a0\u5217\uff0c\u4f46\u67d0\u4e9b\u6578\u64da\u5eab\u7cfb\u7d71\uff08\u5982 MySQL\uff09\u63d0\u4f9b\u4e86\u9019\u7a2e\u529f\u80fd\u3002\u4ee5\u4e0b\u662f MySQL \u7684\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d ADD \u5217\u540d \u6578\u64da\u985e\u578b [AFTER \u5217\u540d] [FIRST];<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5e0c\u671b\u5728 <code>users<\/code> \u8868\u4e2d\u7684 <code>name<\/code> \u5217\u4e4b\u5f8c\u6dfb\u52a0 <code>age<\/code> \u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>ALTER TABLE users ADD age INT AFTER name;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-iyrdTWXJuf\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u9078\u64c7\uff1a<\/strong>\u5728\u6dfb\u52a0\u65b0\u5217\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u975e\u5e38\u91cd\u8981\u3002\u78ba\u4fdd\u6240\u9078\u6578\u64da\u985e\u578b\u80fd\u5920\u6b63\u78ba\u5b58\u5132\u9810\u671f\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u9ed8\u8a8d\u503c\uff1a<\/strong>\u5982\u679c\u65b0\u5217\u4e0d\u5141\u8a31\u7a7a\u503c\uff0c\u5247\u9700\u8981\u70ba\u5176\u8a2d\u7f6e\u9ed8\u8a8d\u503c\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728\u6dfb\u52a0\u5217\u6642\u51fa\u73fe\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5f71\u97ff\u6027\u80fd\uff1a<\/strong>\u5728\u5927\u578b\u8868\u4e2d\u6dfb\u52a0\u5217\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9ad8\u6d41\u91cf\u7684\u751f\u7522\u74b0\u5883\u4e2d\u3002\u56e0\u6b64\uff0c\u5efa\u8b70\u5728\u4f4e\u5cf0\u6642\u6bb5\u9032\u884c\u6b64\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u4efb\u4f55\u7d50\u69cb\u66f4\u6539\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e6%b7%bb%e5%8a%a0%e5%a4%9a%e5%80%8b%e5%88%97-iyrdTWXJuf\">\u793a\u4f8b\uff1a\u6dfb\u52a0\u591a\u500b\u5217<\/h2>\n<p>\u5982\u679c\u9700\u8981\u4e00\u6b21\u6027\u6dfb\u52a0\u591a\u500b\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d \nADD \u5217\u540d1 \u6578\u64da\u985e\u578b1,\nADD \u5217\u540d2 \u6578\u64da\u985e\u578b2;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5728 <code>users<\/code> \u8868\u4e2d\u540c\u6642\u6dfb\u52a0 <code>age<\/code> \u548c <code>email<\/code> \u5217\uff0c\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>ALTER TABLE users \nADD age INT,\nADD email VARCHAR(255);<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-iyrdTWXJuf\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u6dfb\u52a0\u65b0\u7684\u5217\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u4f46\u9700\u8981\u8b39\u614e\u64cd\u4f5c\u4ee5\u907f\u514d\u5f71\u97ff\u73fe\u6709\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528 <code>ALTER TABLE<\/code> \u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u9748\u6d3b\u5730\u64f4\u5c55\u6578\u64da\u7d50\u69cb\u4ee5\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6dfb\u52a0\u55ae\u500b\u5217\u9084\u662f\u591a\u500b\u5217\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u57f7\u884c\u9019\u4e9b\u64cd\u4f5c\u90fd\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u91cd\u8981\u6280\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u548c\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u6307\u5b9a\u4f4d\u7f6e\u6dfb\u52a0\u65b0\u5217\uff0c\u7c21\u55ae\u6b65\u9a5f\u6559\u4f60\u8f15\u9b06\u5b8c\u6210\u6578\u64da\u7d50\u69cb\u7684\u8abf\u6574\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-179882","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179882","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=179882"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179882\/revisions"}],"predecessor-version":[{"id":179883,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179882\/revisions\/179883"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179882"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}