{"id":179788,"date":"2024-11-09T04:48:19","date_gmt":"2024-11-08T20:48:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179788\/"},"modified":"2024-11-09T04:48:19","modified_gmt":"2024-11-08T20:48:19","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e4%b8%ad%e6%8f%92%e5%85%a5%e6%96%b0%e5%ad%97%e6%ae%b5-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e6%8f%92%e5%85%a5%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179788\/","title":{"rendered":"\u5982\u4f55\u5728\u6578\u64da\u5eab\u8868\u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5 (\u6578\u64da\u5eab\u8868\u63d2\u5165\u5b57\u6bb5)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e4%b8%ad%e6%8f%92%e5%85%a5%e6%96%b0%e5%ad%97%e6%ae%b5-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e6%8f%92%e5%85%a5%e5%ad%97%e6%ae%b5-wkrmVoNbol\">\u5982\u4f55\u5728\u6578\u64da\u5eab\u8868\u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5 (\u6578\u64da\u5eab\u8868\u63d2\u5165\u5b57\u6bb5)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u96a8\u8457\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u7d93\u5e38\u9700\u8981\u5c0d\u6578\u64da\u5eab\u8868\u9032\u884c\u4fee\u6539\uff0c\u5176\u4e2d\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\u5c31\u662f\u5728\u73fe\u6709\u7684\u6578\u64da\u8868\u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5728\u6578\u64da\u5eab\u8868\u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\uff0c\u4ee5\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5%ef%bc%9f-wkrmVoNbol\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u5b57\u6bb5\uff1f<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u5b57\u6bb5\u662f\u8868\u7684\u57fa\u672c\u7d44\u6210\u90e8\u5206\uff0c\u6bcf\u500b\u5b57\u6bb5\u4ee3\u8868\u4e00\u500b\u7279\u5b9a\u7684\u6578\u64da\u985e\u578b\u3002\u5b57\u6bb5\u7684\u5b9a\u7fa9\u5305\u62ec\u5b57\u6bb5\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u7d04\u675f\u689d\u4ef6\u7b49\u3002\u7576\u9700\u8981\u5b58\u5132\u65b0\u7684\u6578\u64da\u985e\u578b\u6216\u4fe1\u606f\u6642\uff0c\u5c31\u9700\u8981\u5728\u8868\u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"%e6%8f%92%e5%85%a5%e6%96%b0%e5%ad%97%e6%ae%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-wkrmVoNbol\">\u63d2\u5165\u65b0\u5b57\u6bb5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u63d2\u5165\u65b0\u5b57\u6bb5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d ADD \u65b0\u5b57\u6bb5\u540d \u6578\u64da\u985e\u578b;<\/code><\/pre>\n<p>\u9019\u88e1\u7684\u201c\u8868\u540d\u201d\u662f\u4f60\u8981\u4fee\u6539\u7684\u8868\u7684\u540d\u7a31\uff0c\u201c\u65b0\u5b57\u6bb5\u540d\u201d\u662f\u4f60\u60f3\u8981\u6dfb\u52a0\u7684\u5b57\u6bb5\u540d\u7a31\uff0c\u800c\u201c\u6578\u64da\u985e\u578b\u201d\u5247\u662f\u8a72\u5b57\u6bb5\u6240\u9700\u7684\u6578\u64da\u985e\u578b\uff0c\u4f8b\u5982 INT\u3001VARCHAR\u3001DATE \u7b49\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%9c%a8-mysql-%e4%b8%ad%e6%8f%92%e5%85%a5%e6%96%b0%e5%ad%97%e6%ae%b5-wkrmVoNbol\">\u793a\u4f8b\uff1a\u5728 MySQL \u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\uff0c\u73fe\u5728\u6211\u5011\u60f3\u8981\u6dfb\u52a0\u4e00\u500b\u540d\u70ba <code>age<\/code> \u7684\u65b0\u5b57\u6bb5\uff0c\u6578\u64da\u985e\u578b\u70ba INT\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE users ADD age INT;<\/code><\/pre>\n<p>\u57f7\u884c\u9019\u689d\u8a9e\u53e5\u5f8c\uff0c<code>users<\/code> \u8868\u4e2d\u5c07\u6703\u65b0\u589e\u4e00\u500b <code>age<\/code> \u5b57\u6bb5\uff0c\u4e26\u4e14\u6240\u6709\u73fe\u6709\u7684\u8a18\u9304\u5728\u9019\u500b\u5b57\u6bb5\u4e2d\u5c07\u6703\u986f\u793a\u70ba NULL\u3002<\/p>\n<h2 id=\"%e6%b7%bb%e5%8a%a0%e5%ad%97%e6%ae%b5%e6%99%82%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-wkrmVoNbol\">\u6dfb\u52a0\u5b57\u6bb5\u6642\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u9078\u64c7\uff1a<\/strong>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u975e\u5e38\u91cd\u8981\uff0c\u9019\u5c07\u5f71\u97ff\u5230\u6578\u64da\u7684\u5b58\u5132\u548c\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li><strong>\u7d04\u675f\u689d\u4ef6\uff1a<\/strong>\u53ef\u4ee5\u5728\u6dfb\u52a0\u5b57\u6bb5\u6642\u8a2d\u7f6e\u7d04\u675f\u689d\u4ef6\uff0c\u4f8b\u5982 NOT NULL\u3001UNIQUE \u7b49\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u7d50\u69cb\u4fee\u6539\u4e4b\u524d\uff0c\u5efa\u8b70\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u60c5\u6cc1\u5c0e\u81f4\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%9c%a8%e5%85%b6%e4%bb%96%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b3%bb%e7%b5%b1%e4%b8%ad%e7%9a%84%e6%8f%92%e5%85%a5%e6%96%b0%e5%ad%97%e6%ae%b5-wkrmVoNbol\">\u5728\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u7684\u63d2\u5165\u65b0\u5b57\u6bb5<\/h2>\n<p>\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5728\u8a9e\u6cd5\u4e0a\u53ef\u80fd\u6703\u6709\u4e9b\u8a31\u5dee\u7570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u63d2\u5165\u65b0\u5b57\u6bb5\u7684\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"postgresql-wkrmVoNbol\">PostgreSQL<\/h3>\n<pre><code>ALTER TABLE users ADD COLUMN age INT;<\/code><\/pre>\n<h3 id=\"sql-server-wkrmVoNbol\">SQL Server<\/h3>\n<pre><code>ALTER TABLE users ADD age INT;<\/code><\/pre>\n<h3 id=\"oracle-wkrmVoNbol\">Oracle<\/h3>\n<pre><code>ALTER TABLE users ADD age NUMBER;<\/code><\/pre>\n<p>\u96d6\u7136\u8a9e\u6cd5\u7565\u6709\u4e0d\u540c\uff0c\u4f46\u57fa\u672c\u6982\u5ff5\u662f\u4e00\u81f4\u7684\uff0c\u90fd\u662f\u901a\u904e <code>ALTER TABLE<\/code> \u8a9e\u53e5\u4f86\u4fee\u6539\u8868\u7d50\u69cb\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wkrmVoNbol\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u8868\u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5\u662f\u4e00\u500b\u5e38\u898b\u4e14\u5fc5\u8981\u7684\u64cd\u4f5c\uff0c\u7121\u8ad6\u662f\u5728 MySQL\u3001PostgreSQL \u9084\u662f\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\uff0c\u9019\u4e00\u904e\u7a0b\u90fd\u76f8\u5c0d\u7c21\u55ae\u3002\u901a\u904e\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u64f4\u5c55\u6578\u64da\u5eab\u7684\u529f\u80fd\uff0c\u6eff\u8db3\u4e0d\u65b7\u8b8a\u5316\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u904b\u884c\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u7ba1\u7406\u63d0\u4f9b\u7a69\u5b9a\u7684\u57fa\u790e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u8868\u4e2d\u63d2\u5165\u65b0\u5b57\u6bb5\uff0c\u638c\u63e1SQL\u8a9e\u6cd5\u548c\u6700\u4f73\u5be6\u8e10\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-179788","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179788","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=179788"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179788\/revisions"}],"predecessor-version":[{"id":179789,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179788\/revisions\/179789"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}