{"id":21411,"date":"2024-01-02T08:56:19","date_gmt":"2024-01-02T08:56:19","guid":{"rendered":"https:\/\/server.hk\/blog\/21411\/"},"modified":"2024-11-14T10:34:55","modified_gmt":"2024-11-14T02:34:55","slug":"how-to-fix-postgresql-error-code-428c9-generated_always","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21411\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a428C9 &#8211; generated_always"},"content":{"rendered":"<h1>\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a428C9 &#8211; generated_always<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u88ab\u958b\u767c\u4eba\u54e1\u548c\u4f01\u696d\u4f7f\u7528\u3002\u7136\u800c\uff0c\u50cf\u4efb\u4f55\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u4e5f\u53ef\u80fd\u9047\u5230\u53ef\u80fd\u59a8\u7919\u5176\u5e73\u7a69\u904b\u884c\u7684\u932f\u8aa4\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a428C9 &#8211; generated_always\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u6210\u56e0\uff0c\u4e26\u63d0\u4f9b\u9010\u6b65\u89e3\u6c7a\u65b9\u6848\u4f86\u4fee\u5fa9\u5b83\u3002<\/p>\n<h2>\u7406\u89e3 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a428C9 &#8211; generated_always<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a428C9 &#8211; generated_always \u767c\u751f\u5728\u5617\u8a66\u4fee\u6539\u6a19\u8a18\u70ba\u300cgenerated always\u300d\u7684\u5217\u6642\u3002\u9019\u610f\u5473\u8457\u8a72\u5217\u7684\u503c\u662f\u57fa\u65bc\u8868\u9054\u5f0f\u6216\u51fd\u6578\u81ea\u52d5\u751f\u6210\u7684\uff0c\u4e26\u4e14\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u3002\u6b64\u932f\u8aa4\u7684\u767c\u751f\u662f\u70ba\u4e86\u9632\u6b62\u610f\u5916\u4fee\u6539\u53ef\u80fd\u5f71\u97ff\u6578\u64da\u5b8c\u6574\u6027\u7684\u60c5\u6cc1\u3002<\/p>\n<h2>\u932f\u8aa4\u7684\u6210\u56e0<\/h2>\n<ol>\n<li>\u5617\u8a66\u66f4\u65b0\u6216\u63d2\u5165\u503c\u5230 generated always \u5217\u3002<\/li>\n<li>\u4fee\u6539 generated always \u5217\u7684\u5b9a\u7fa9\u3002<\/li>\n<li>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e0d\u6b63\u78ba\u7684\u8a9e\u6cd5\u6216\u932f\u8aa4\u5f15\u7528 generated always \u5217\u3002<\/li>\n<\/ol>\n<h2>\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a428C9 &#8211; generated_always \u7684\u89e3\u6c7a\u65b9\u6848<\/h2>\n<ol>\n<li>\u907f\u514d\u66f4\u65b0\u6216\u63d2\u5165\u503c\u5230 generated always \u5217\uff1a\n<ul>\n<li>\u6aa2\u67e5\u60a8\u7684 SQL \u8a9e\u53e5\uff0c\u78ba\u4fdd\u60a8\u6c92\u6709\u5617\u8a66\u4fee\u6539 generated always \u5217\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u66f4\u65b0\u5217\u7684\u503c\uff0c\u8acb\u78ba\u5b9a\u751f\u6210\u8a72\u503c\u7684\u5e95\u5c64\u8868\u9054\u5f0f\u6216\u51fd\u6578\uff0c\u4e26\u76f8\u61c9\u5730\u9032\u884c\u4fee\u6539\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u4fee\u6539 generated always \u5217\u7684\u5b9a\u7fa9\uff1a\n<ul>\n<li>\u5982\u679c\u9700\u8981\u66f4\u6539 generated always \u5217\u7684\u5b9a\u7fa9\uff0c\u5fc5\u9808\u5148\u522a\u9664\u73fe\u6709\u5217\uff0c\u7136\u5f8c\u518d\u4f7f\u7528\u6240\u9700\u7684\u66f4\u6539\u91cd\u65b0\u5275\u5efa\u5b83\u3002<\/li>\n<li>\u4f7f\u7528 ALTER TABLE \u8a9e\u53e5\uff0c\u7d50\u5408 DROP COLUMN \u548c ADD COLUMN \u5b50\u53e5\u4f86\u5be6\u73fe\u3002<\/li>\n<li>\u8a18\u5f97\u7528\u6b63\u78ba\u7684\u8868\u9054\u5f0f\u6216\u51fd\u6578\u91cd\u65b0\u5275\u5efa\u8a72\u5217\u4ee5\u751f\u6210\u503c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u9a57\u8b49\u6b63\u78ba\u7684\u8a9e\u6cd5\u548c\u5f15\u7528\uff1a\n<ul>\n<li>\u4ed4\u7d30\u6aa2\u67e5\u60a8\u7684 SQL \u8a9e\u53e5\uff0c\u67e5\u627e\u4efb\u4f55\u8a9e\u6cd5\u932f\u8aa4\u6216\u5c0d generated always \u5217\u7684\u932f\u8aa4\u5f15\u7528\u3002<\/li>\n<li>\u78ba\u4fdd\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u6b63\u78ba\u7684\u5217\u540d\u548c\u5225\u540d\u3002<\/li>\n<li>\u67e5\u770b PostgreSQL \u6587\u6a94\u4ee5\u7372\u53d6 generated always \u5217\u7684\u6b63\u78ba\u8a9e\u6cd5\u548c\u7528\u6cd5\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>\u7e3d\u7d50<\/h2>\n<p>\u7576\u5617\u8a66\u4fee\u6539\u6a19\u8a18\u70ba\u300cgenerated always\u300d\u7684\u5217\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a428C9 &#8211; generated_always\u3002\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u81f3\u95dc\u91cd\u8981\u7684\u662f\u8981\u907f\u514d\u66f4\u65b0\u6216\u63d2\u5165\u503c\u5230 generated always \u5217\uff0c\u6b63\u78ba\u4fee\u6539\u5217\u7684\u5b9a\u7fa9\uff0c\u4ee5\u53ca\u9a57\u8b49\u67e5\u8a62\u4e2d\u7684\u8a9e\u6cd5\u548c\u5f15\u7528\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u89e3\u6c7a\u932f\u8aa4\uff0c\u78ba\u4fdd PostgreSQL \u6578\u64da\u5eab\u7684\u5e73\u7a69\u904b\u884c\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u6709\u95dc VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6211\u5011\u53ef\u9760\u4e14\u5b89\u5168\u7684 VPS \u8a17\u7ba1\u670d\u52d9\u65e8\u5728\u6eff\u8db3\u60a8\u7684\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4fee\u5fa9 PostgreSQL &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-21411","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21411","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=21411"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21411\/revisions"}],"predecessor-version":[{"id":24081,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21411\/revisions\/24081"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}