{"id":179790,"date":"2024-11-09T04:49:23","date_gmt":"2024-11-08T20:49:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179790\/"},"modified":"2024-11-09T04:49:23","modified_gmt":"2024-11-08T20:49:23","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%e5%88%aa%e9%99%a4%e4%b8%80%e5%88%97%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e4%b8%ad%e5%88%aa%e9%99%a4%e4%b8%80%e5%88%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179790\/","title":{"rendered":"\u5982\u4f55\u5728\u6578\u64da\u5eab\u8868\u4e2d\u522a\u9664\u4e00\u5217\uff1f (\u6578\u64da\u5eab\u8868\u4e2d\u522a\u9664\u4e00\u5217)"},"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%e5%88%aa%e9%99%a4%e4%b8%80%e5%88%97%ef%bc%9f-KszAHCtANh\">\u5982\u4f55\u5728\u6578\u64da\u5eab\u8868\u4e2d\u522a\u9664\u4e00\u5217\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u522a\u9664\u4e00\u5217\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u6578\u64da\u7d50\u69cb\u9700\u8981\u8abf\u6574\u6216\u512a\u5316\u7684\u60c5\u6cc1\u4e0b\u3002\u7121\u8ad6\u662f\u56e0\u70ba\u6578\u64da\u4e0d\u518d\u9700\u8981\uff0c\u9084\u662f\u56e0\u70ba\u9700\u8981\u6539\u8b8a\u6578\u64da\u6a21\u578b\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u5730\u522a\u9664\u6578\u64da\u5eab\u8868\u4e2d\u7684\u4e00\u5217\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5728\u4e0d\u540c\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u522a\u9664\u5217\u7684\u57fa\u672c\u65b9\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e5%88%aa%e9%99%a4%e5%88%97%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-KszAHCtANh\">\u522a\u9664\u5217\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6bcf\u4e00\u5217\u4ee3\u8868\u4e86\u4e00\u500b\u7279\u5b9a\u7684\u6578\u64da\u5c6c\u6027\u3002\u7576\u6211\u5011\u6c7a\u5b9a\u522a\u9664\u4e00\u5217\u6642\uff0c\u9019\u610f\u5473\u8457\u6211\u5011\u5c07\u6c38\u4e45\u6027\u5730\u79fb\u9664\u8a72\u5217\u53ca\u5176\u6240\u6709\u6578\u64da\u3002\u9019\u4e00\u64cd\u4f5c\u901a\u5e38\u662f\u4e0d\u53ef\u9006\u7684\uff0c\u56e0\u6b64\u5728\u57f7\u884c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u6578\u64da\u3002<\/p>\n<h2 id=\"%e5%9c%a8%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b3%bb%e7%b5%b1%e4%b8%ad%e5%88%aa%e9%99%a4%e5%88%97%e7%9a%84%e6%96%b9%e6%b3%95-KszAHCtANh\">\u5728\u4e0d\u540c\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u522a\u9664\u5217\u7684\u65b9\u6cd5<\/h2>\n<h3 id=\"1-mysql-KszAHCtANh\">1. MySQL<\/h3>\n<p>\u5728MySQL\u4e2d\uff0c\u522a\u9664\u5217\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d DROP COLUMN \u5217\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201c\u7528\u6236\u201d\u7684\u8868\uff0c\u4e26\u5e0c\u671b\u522a\u9664\u201c\u5e74\u9f61\u201d\u9019\u4e00\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>ALTER TABLE \u7528\u6236 DROP COLUMN \u5e74\u9f61;<\/code><\/pre>\n<h3 id=\"2-postgresql-KszAHCtANh\">2. PostgreSQL<\/h3>\n<p>PostgreSQL\u7684\u522a\u9664\u5217\u8a9e\u6cd5\u8207MySQL\u76f8\u4f3c\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d DROP COLUMN \u5217\u540d;<\/code><\/pre>\n<p>\u540c\u6a23\u5730\uff0c\u5c0d\u65bc\u201c\u7528\u6236\u201d\u8868\uff0c\u522a\u9664\u201c\u5e74\u9f61\u201d\u5217\u7684\u547d\u4ee4\u70ba\uff1a<\/p>\n<pre><code>ALTER TABLE \u7528\u6236 DROP COLUMN \u5e74\u9f61;<\/code><\/pre>\n<h3 id=\"3-sql-server-KszAHCtANh\">3. SQL Server<\/h3>\n<p>\u5728SQL Server\u4e2d\uff0c\u522a\u9664\u5217\u7684\u8a9e\u6cd5\u4e5f\u76f8\u4f3c\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u522a\u9664\u591a\u5217\u6642\u9700\u8981\u4f7f\u7528\u9017\u865f\u5206\u9694\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d DROP COLUMN \u5217\u540d1, \u5217\u540d2;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u522a\u9664\u201c\u7528\u6236\u201d\u8868\u4e2d\u7684\u201c\u5e74\u9f61\u201d\u548c\u201c\u5730\u5740\u201d\u5217\uff1a<\/p>\n<pre><code>ALTER TABLE \u7528\u6236 DROP COLUMN \u5e74\u9f61, \u5730\u5740;<\/code><\/pre>\n<h3 id=\"4-oracle-KszAHCtANh\">4. Oracle<\/h3>\n<p>\u5728Oracle\u4e2d\uff0c\u522a\u9664\u5217\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d DROP COLUMN \u5217\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u522a\u9664\u201c\u7528\u6236\u201d\u8868\u4e2d\u7684\u201c\u5e74\u9f61\u201d\u5217\uff1a<\/p>\n<pre><code>ALTER TABLE \u7528\u6236 DROP COLUMN \u5e74\u9f61;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-KszAHCtANh\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u522a\u9664\u5217\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u4e1f\u5931\u91cd\u8981\u4fe1\u606f\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u4f9d\u8cf4\u6027\uff1a<\/strong>\u78ba\u4fdd\u8a72\u5217\u4e0d\u88ab\u5176\u4ed6\u8868\u6216\u61c9\u7528\u7a0b\u5e8f\u4f9d\u8cf4\uff0c\u5426\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6027\u80fd\u5f71\u97ff\uff1a<\/strong>\u522a\u9664\u5217\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u5eab\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u8868\u4e2d\uff0c\u5efa\u8b70\u5728\u4f4e\u5cf0\u6642\u6bb5\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KszAHCtANh\">\u7e3d\u7d50<\/h2>\n<p>\u522a\u9664\u6578\u64da\u5eab\u8868\u4e2d\u7684\u4e00\u5217\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u6d89\u53ca\u5230\u591a\u500b\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u7279\u5b9a\u8a9e\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\u3002\u7121\u8ad6\u662fMySQL\u3001PostgreSQL\u3001SQL Server\u9084\u662fOracle\uff0c\u4e86\u89e3\u6b63\u78ba\u7684\u547d\u4ee4\u548c\u64cd\u4f5c\u6b65\u9a5f\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5efa\u8b70\u5728\u9032\u884c\u6b64\u985e\u64cd\u4f5c\u4e4b\u524d\u9032\u884c\u5145\u5206\u7684\u6e96\u5099\u548c\u5099\u4efd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u652f\u6301\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u4e86\u89e3\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u548c\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u8868\u4e2d\u522a\u9664\u4e00\u5217\uff0c\u638c\u63e1\u4f7f\u7528SQL\u8a9e\u53e5\u9032\u884c\u6578\u64da\u7ba1\u7406\u7684\u6280\u5de7\uff0c\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\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-179790","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179790","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=179790"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179790\/revisions"}],"predecessor-version":[{"id":179791,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179790\/revisions\/179791"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179790"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179790"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}