{"id":205022,"date":"2025-05-29T16:44:48","date_gmt":"2025-05-29T08:44:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205022\/"},"modified":"2025-05-29T16:44:48","modified_gmt":"2025-05-29T08:44:48","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8sqlalchemy%e9%ab%98%e6%95%88%e7%ae%a1%e7%90%86%e6%95%b0%e6%8d%ae%e5%ba%93%e8%a1%a8%e5%ad%97%e6%ae%b5%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205022\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528SQLAlchemy\u9ad8\u6548\u7ba1\u7406\u6570\u636e\u5e93\u8868\u5b57\u6bb5\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

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IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u5982\u4f55\u4f7f\u7528SQLAlchemy\u9ad8\u6548\u7ba1\u7406\u6570\u636e\u5e93\u8868\u5b57\u6bb5\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

<\/p>\n

SQLAlchemy \u5bf9\u8868\u5b57\u6bb5\u7684\u7ba1\u7406<\/strong><\/p>\n

SQLAlchemy \u662f\u4e00\u6b3e\u529f\u80fd\u5f3a\u5927\u7684 ORM \u5de5\u5177\uff0c\u7528\u4e8e Python \u4e2d\u4e0e\u6570\u636e\u5e93\u7684\u4ea4\u4e92\u3002\u867d\u7136\u5b83\u63d0\u4f9b\u4e86\u76f4\u89c2\u7684\u8868\u521b\u5efa\u529f\u80fd\uff0c\u4f46\u4fee\u6539\u8868\u7ed3\u6784\u7684 API \u53ef\u80fd\u4f1a\u8ba9\u4eba\u8ff7\u60d1\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u5728 SQLAlchemy \u4e2d\u5bf9\u8868\u5b57\u6bb5\u8fdb\u884c\u6dfb\u52a0\u3001\u4fee\u6539\u548c\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n

\u6dfb\u52a0\u5b57\u6bb5<\/strong><\/p>\n

\u9664\u4e86\u7f16\u5199\u539f\u751f SQL\uff0cSQLAlchemy \u65e0\u6cd5\u76f4\u63a5\u5bf9\u8868\u6dfb\u52a0\u5b57\u6bb5\u3002\u7136\u800c\uff0c\u6709\u4e00\u79cd\u89e3\u51b3\u65b9\u6cd5\uff1a\u4f7f\u7528 Alembic \u7b49\u6570\u636e\u5e93\u8fc1\u79fb\u6846\u67b6\u3002\u8fd9\u4e9b\u6846\u67b6\u5141\u8bb8\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u53ef\u63a7\u5730\u4fee\u6539\u6570\u636e\u5e93\u7ed3\u6784\uff0c\u800c\u65e0\u9700\u7f16\u5199\u624b\u52a8 SQL\u3002<\/p>\n

\u4fee\u6539\u5b57\u6bb5<\/strong><\/p>\n

\u4fee\u6539\u8868\u5b57\u6bb5\u7684\u64cd\u4f5c\u4e0e\u6dfb\u52a0\u5b57\u6bb5\u7c7b\u4f3c\u3002\u518d\u6b21\u5f3a\u8c03\uff0cSQLAlchemy \u672c\u8eab\u4e0d\u63d0\u4f9b\u5bf9\u5b57\u6bb5\u8fdb\u884c\u4fee\u6539\u7684 API\u3002\u4e0d\u8fc7\uff0c\u60a8\u53ef\u4ee5\u7ed3\u5408\u4f7f\u7528\u8fc1\u79fb\u6846\u67b6\u548c SQLAlchemy Core API \u7684 ALTER TABLE \u8bed\u53e5\u6765\u5b9e\u73b0\u6240\u9700\u8981\u7684\u4fee\u6539\u3002<\/p>\n

\u5220\u9664\u5b57\u6bb5<\/strong><\/p>\n

\u4e0e\u6dfb\u52a0\u548c\u4fee\u6539\u7c7b\u4f3c\uff0c\u5220\u9664\u5b57\u6bb5\u4e5f\u9700\u8981\u8fc1\u79fb\u6846\u67b6\u548c SQLAlchemy Core API\u3002ALTER TABLE \u8bed\u53e5\u4e2d\u7684 DROP COLUMN \u547d\u4ee4\u7528\u4e8e\u5b9e\u73b0\u8fd9\u4e00\u76ee\u7684\u3002<\/p>\n

\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n

\u5f00\u53d1\u9636\u6bb5\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u6e05\u9664\u6240\u6709\u8868\u5e76\u91cd\u65b0\u521b\u5efa\u5b83\u4eec\u3002\u7136\u800c\uff0c\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u8fd9\u901a\u5e38\u4e0d\u53ef\u884c\u3002\u76f8\u53cd\uff0c\u60a8\u5e94\u8be5\u901a\u8fc7 SQL \u5ba1\u6838\u548c\u517c\u5bb9\u6027\u6d4b\u8bd5\u6765\u6267\u884c\u53d8\u66f4\u3002\u53e6\u5916\uff0c\u91cd\u8981\u7684\u662f\u5c06 SQLAlchemy \u4ec5\u7528\u4f5c ORM\uff0c\u5e76\u5229\u7528\u5176\u4e0e\u5176\u4ed6\u5de5\u5177\uff08\u5982\u6570\u636e\u5e93\u8fc1\u79fb\u6846\u67b6\uff09\u7684\u96c6\u6210\u6765\u5904\u7406\u6570\u636e\u5e93\u7ed3\u6784\u7684\u53d8\u66f4\u3002<\/p>\n

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\u5982\u4f55\u4f7f\u7528SQLAlchemy\u9ad8\u6548...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205022","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205022","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=205022"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205022\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}