{"id":21314,"date":"2024-01-02T07:19:28","date_gmt":"2024-01-02T07:19:28","guid":{"rendered":"https:\/\/server.hk\/blog\/21314\/"},"modified":"2024-11-14T10:36:56","modified_gmt":"2024-11-14T02:36:56","slug":"how-to-fix-postgresql-error-code-2200f-zero_length_character_string","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21314\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a2200F &#8211; zero_length_character_string"},"content":{"rendered":"<h1 id=\"how-to-fix-postgresql-error-code-2200f-zero_length_character_string-QssvknzpWU\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a2200F &#8211; zero_length_character_string<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5f0f\u4e2d\u3002\u7136\u800c\uff0c\u50cf\u4efb\u4f55\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u932f\u8aa4\uff0c\u5f9e\u800c\u5f71\u97ff\u5176\u6b63\u5e38\u904b\u884c\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a2200F &#8211; zero_length_character_string\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u539f\u56e0\uff0c\u4e26\u63d0\u4f9b\u9010\u6b65\u89e3\u6c7a\u65b9\u6848\u4f86\u4fee\u5fa9\u5b83\u3002<\/p>\n<h2 id=\"understanding-the-error-QssvknzpWU\">\u4e86\u89e3\u932f\u8aa4<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a2200F &#8211; zero_length_character_string \u767c\u751f\u65bc\u5617\u8a66\u5411\u8868\u4e2d\u7684\u67d0\u5217\u63d2\u5165\u6216\u66f4\u65b0\u96f6\u9577\u5ea6\u5b57\u5143\u4e32\uff08\u5373\u7a7a\u5b57\u4e32\uff09\uff0c\u800c\u8a72\u5217\u4e0d\u5141\u8a31\u6b64\u985e\u503c\u6642\u3002\u6b64\u932f\u8aa4\u901a\u5e38\u7531\u9055\u53cd\u7d04\u675f\u89f8\u767c\uff0c\u7279\u5225\u662f NOT NULL \u7d04\u675f\u3002<\/p>\n<h2 id=\"possible-causes-QssvknzpWU\">\u53ef\u80fd\u7684\u539f\u56e0<\/h2>\n<p>\u5c0e\u81f4\u6b64\u932f\u8aa4\u7684\u6f5b\u5728\u539f\u56e0\u6709\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u8f38\u5165\u932f\u8aa4\uff1a<\/strong> \u5982\u679c\u60a8\u4e0d\u5c0f\u5fc3\u5728\u4e0d\u5141\u8a31\u7a7a\u5b57\u4e32\u7684\u5217\u4e2d\u8f38\u5165\u4e86\u7a7a\u5b57\u4e32\uff0c\u5247\u53ef\u80fd\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u61c9\u7528\u7a0b\u5f0f\u932f\u8aa4\uff1a<\/strong> \u61c9\u7528\u7a0b\u5f0f\u4ee3\u78bc\u4e2d\u7684\u932f\u8aa4\u53ef\u80fd\u5c0e\u81f4\u5728\u4e0d\u61c9\u5305\u542b\u7a7a\u5b57\u4e32\u7684\u5217\u4e2d\u63d2\u5165\u6216\u66f4\u65b0\u7a7a\u5b57\u4e32\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u67b6\u69cb\u554f\u984c\uff1a<\/strong> \u8868\u7684\u67b6\u69cb\u53ef\u80fd\u5b9a\u7fa9\u4e0d\u6b63\u78ba\uff0c\u5141\u8a31\u5728\u61c9\u53d7\u9650\u5236\u7684\u5217\u4e2d\u4f7f\u7528\u7a7a\u5b57\u4e32\u3002<\/li>\n<\/ul>\n<h2 id=\"fixing-the-error-QssvknzpWU\">\u4fee\u5fa9\u932f\u8aa4<\/h2>\n<p>\u8981\u89e3\u6c7a PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a2200F &#8211; zero_length_character_string\uff0c\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u64cd\u4f5c\uff1a<\/p>\n<h3 id=\"step-1-identify-the-affected-table-and-column-QssvknzpWU\">\u6b65\u9a5f 1\uff1a\u8b58\u5225\u53d7\u5f71\u97ff\u7684\u8868\u548c\u5217<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u8b58\u5225\u5f15\u767c\u932f\u8aa4\u7684\u8868\u548c\u5217\u3002\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u932f\u8aa4\u8a0a\u606f\u6216\u89f8\u767c\u932f\u8aa4\u7684\u61c9\u7528\u7a0b\u5f0f\u4ee3\u78bc\u4f86\u5b8c\u6210\u9019\u4e00\u64cd\u4f5c\u3002\u8b58\u5225\u51fa\u8868\u548c\u5217\u5f8c\uff0c\u9032\u5165\u4e0b\u4e00\u6b65\u3002<\/p>\n<h3 id=\"step-2-check-the-column-definition-QssvknzpWU\">\u6b65\u9a5f 2\uff1a\u6aa2\u67e5\u5217\u7684\u5b9a\u7fa9<\/h3>\n<p>\u67e5\u770b\u8868\u67b6\u69cb\u4e2d\u7684\u5217\u5b9a\u7fa9\uff0c\u78ba\u4fdd\u8a72\u5217\u4e0d\u5141\u8a31\u7a7a\u5b57\u4e32\u3002\u6aa2\u67e5\u662f\u5426\u6709 NOT NULL \u7d04\u675f\u6216\u5176\u4ed6\u9650\u5236\u7a7a\u503c\u7684\u7d04\u675f\u3002\u5982\u679c\u8a72\u5217\u4e0d\u61c9\u5141\u8a31\u7a7a\u5b57\u4e32\uff0c\u8acb\u7e7c\u7e8c\u4e0b\u4e00\u6b65\u3002<\/p>\n<h3 id=\"step-3-validate-data-entry-QssvknzpWU\">\u6b65\u9a5f 3\uff1a\u9a57\u8b49\u6578\u64da\u8f38\u5165<\/h3>\n<p>\u5982\u679c\u8a72\u5217\u4e0d\u61c9\u5141\u8a31\u7a7a\u5b57\u4e32\uff0c\u8acb\u9a57\u8b49\u63d2\u5165\u6216\u66f4\u65b0\u7684\u6578\u64da\u3002\u6aa2\u67e5\u8ca0\u8cac\u6578\u64da\u8f38\u5165\u7684\u61c9\u7528\u7a0b\u5f0f\u4ee3\u78bc\uff0c\u78ba\u4fdd\u5b83\u4e0d\u6703\u932f\u8aa4\u5730\u63d2\u5165\u7a7a\u5b57\u4e32\u3002\u9a57\u8b49\u7528\u6236\u8f38\u5165\uff0c\u4e26\u8655\u7406\u53ef\u80fd\u8f38\u5165\u7a7a\u5b57\u4e32\u7684\u7279\u6b8a\u60c5\u6cc1\u3002<\/p>\n<h3 id=\"step-4-modify-the-column-definition-QssvknzpWU\">\u6b65\u9a5f 4\uff1a\u4fee\u6539\u5217\u7684\u5b9a\u7fa9<\/h3>\n<p>\u5982\u679c\u8a72\u5217\u61c9\u5141\u8a31\u7a7a\u5b57\u4e32\uff0c\u4f46\u932f\u8aa4\u4ecd\u7136\u5b58\u5728\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u4fee\u6539\u5217\u7684\u5b9a\u7fa9\u3002\u66f4\u6539\u8868\u67b6\u69cb\u4e26\u79fb\u9664\u4efb\u4f55\u9632\u6b62\u7a7a\u5b57\u4e32\u7684\u7d04\u675f\u3002\u4f46\u5728\u9032\u884c\u67b6\u69cb\u66f4\u6539\u6642\u8acb\u8b39\u614e\uff0c\u56e0\u70ba\u9019\u53ef\u80fd\u6703\u5e36\u4f86\u610f\u60f3\u4e0d\u5230\u7684\u5f8c\u679c\u3002<\/p>\n<h3 id=\"step-5-update-the-application-code-QssvknzpWU\">\u6b65\u9a5f 5\uff1a\u66f4\u65b0\u61c9\u7528\u7a0b\u5f0f\u4ee3\u78bc<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u662f\u7531\u61c9\u7528\u7a0b\u5f0f\u4ee3\u78bc\u4e2d\u7684\u932f\u8aa4\u5f15\u8d77\u7684\uff0c\u60a8\u9700\u8981\u4fee\u5fa9\u4ee3\u78bc\u4ee5\u9632\u6b62\u63d2\u5165\u6216\u66f4\u65b0\u7a7a\u5b57\u4e32\u3002\u6aa2\u67e5\u8ca0\u8cac\u6578\u64da\u64cd\u4f5c\u7684\u4ee3\u78bc\uff0c\u78ba\u4fdd\u5b83\u6b63\u78ba\u8655\u7406\u7a7a\u503c\u3002<\/p>\n<h2 id=\"summary-QssvknzpWU\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a2200F &#8211; zero_length_character_string \u53ef\u4ee5\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u53d7\u5f71\u97ff\u7684\u8868\u548c\u5217\u3001\u9a57\u8b49\u6578\u64da\u8f38\u5165\u3001\u5fc5\u8981\u6642\u4fee\u6539\u5217\u5b9a\u7fa9\u4ee5\u53ca\u66f4\u65b0\u61c9\u7528\u7a0b\u5f0f\u4ee3\u78bc\u4f86\u89e3\u6c7a\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u78ba\u4fdd\u60a8\u7684 PostgreSQL \u6578\u64da\u5eab\u6b63\u5e38\u904b\u884c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u4e14\u9ad8\u6548\u7684 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6211\u5011\u7684\u9999\u6e2f VPS \u8a17\u7ba1\u670d\u52d9\u70ba\u5404\u7a2e\u898f\u6a21\u7684\u696d\u52d9\u63d0\u4f9b\u5353\u8d8a\u7684\u6027\u80fd\u3001\u5b89\u5168\u6027\u548c\u652f\u6301\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-21314","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21314","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=21314"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21314\/revisions"}],"predecessor-version":[{"id":24200,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21314\/revisions\/24200"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}