{"id":21333,"date":"2024-01-02T07:38:22","date_gmt":"2024-01-02T07:38:22","guid":{"rendered":"https:\/\/server.hk\/blog\/21333\/"},"modified":"2024-11-14T10:36:33","modified_gmt":"2024-11-14T02:36:33","slug":"how-to-fix-postgresql-error-code-22038-singleton_sql_json_item_required","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21333\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22038 &#8211; singleton_sql_json_item_required"},"content":{"rendered":"<h1 id=\"how-to-fix-postgresql-error-code-22038-singleton_sql_json_item_required-laaamvZjDA\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22038 &#8211; singleton_sql_json_item_required<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\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\u4e5f\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u932f\u8aa4\uff0c\u9019\u4e9b\u932f\u8aa4\u53ef\u80fd\u6703\u5e72\u64fe\u5176\u6b63\u5e38\u904b\u884c\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22038 &#8211; singleton_sql_json_item_required\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u539f\u56e0\u4e26\u63d0\u4f9b\u9010\u6b65\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"understanding-the-error-laaamvZjDA\">\u4e86\u89e3\u932f\u8aa4<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22038 &#8211; singleton_sql_json_item_required \u767c\u751f\u5728\u671f\u671b JSON \u5c0d\u8c61\u53ea\u6709\u4e00\u500b\u6210\u54e1\u9805\uff0c\u4f46\u5be6\u969b\u4e0a\u537b\u5305\u542b\u591a\u500b\u6210\u54e1\u9805\u6642\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u5728\u8655\u7406 PostgreSQL \u4e2d\u7684 JSON \u6578\u64da\u985e\u578b\u548c\u51fd\u6578\u6642\u7522\u751f\u3002<\/p>\n<h2 id=\"possible-causes-laaamvZjDA\">\u53ef\u80fd\u7684\u539f\u56e0<\/h2>\n<p>\u6b64\u932f\u8aa4\u7684\u6f5b\u5728\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>JSON \u7d50\u69cb\u932f\u8aa4\uff1a<\/strong> JSON \u5c0d\u8c61\u53ef\u80fd\u5177\u6709\u932f\u8aa4\u7684\u7d50\u69cb\uff0c\u4f8b\u5982\u5305\u542b\u591a\u500b\u9375\u503c\u5c0d\u800c\u4e0d\u662f\u55ae\u4e00\u9375\u503c\u5c0d\u3002<\/li>\n<li><strong>\u7121\u6548\u7684 JSON \u6578\u64da\uff1a<\/strong> JSON \u6578\u64da\u53ef\u80fd\u5305\u542b\u7121\u6548\u7684\u5b57\u7b26\u6216\u8a9e\u6cd5\uff0c\u5c0e\u81f4 PostgreSQL \u932f\u8aa4\u89e3\u91cb\u6578\u64da\u3002<\/li>\n<li><strong>JSON \u51fd\u6578\u4f7f\u7528\u4e0d\u7576\uff1a<\/strong> \u5728 SQL \u67e5\u8a62\u4e2d\u4e0d\u7576\u4f7f\u7528 JSON \u51fd\u6578\u6216\u64cd\u4f5c\u7b26\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"fixing-the-error-laaamvZjDA\">\u4fee\u5fa9\u932f\u8aa4<\/h2>\n<p>\u8981\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22038 &#8211; singleton_sql_json_item_required\uff0c\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-validate-the-json-structure-laaamvZjDA\">1. \u9a57\u8b49 JSON \u7d50\u69cb<\/h3>\n<p>\u78ba\u4fdd JSON \u5c0d\u8c61\u5177\u6709\u6b63\u78ba\u7684\u7d50\u69cb\uff0c\u4e14\u53ea\u5305\u542b\u4e00\u500b\u9375\u503c\u5c0d\u3002\u5982\u679c\u6709\u591a\u500b\u9375\u503c\u5c0d\uff0c\u8acb\u6839\u64da\u9700\u8981\u522a\u9664\u6216\u4fee\u6539\u5b83\u5011\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 JSON \u9a57\u8b49\u5de5\u5177\u6216\u5728\u7dda JSON \u683c\u5f0f\u5316\u5de5\u5177\u4f86\u9a57\u8b49\u7d50\u69cb\u3002<\/p>\n<h3 id=\"2-check-for-invalid-json-data-laaamvZjDA\">2. \u6aa2\u67e5\u7121\u6548\u7684 JSON \u6578\u64da<\/h3>\n<p>\u6aa2\u67e5 JSON \u6578\u64da\u662f\u5426\u5b58\u5728\u7121\u6548\u5b57\u7b26\u6216\u8a9e\u6cd5\u932f\u8aa4\u3002\u78ba\u4fdd\u6578\u64da\u683c\u5f0f\u6b63\u78ba\uff0c\u4e26\u7b26\u5408 JSON \u898f\u7bc4\u3002\u66f4\u6b63 JSON \u6578\u64da\u4e2d\u7684\u4efb\u4f55\u932f\u8aa4\u6216\u4e0d\u4e00\u81f4\u4e4b\u8655\u3002<\/p>\n<h3 id=\"3-review-json-functions-and-operators-laaamvZjDA\">3. \u5be9\u67e5 JSON \u51fd\u6578\u548c\u64cd\u4f5c\u7b26<\/h3>\n<p>\u5982\u679c\u60a8\u5728 SQL \u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86 JSON \u51fd\u6578\u6216\u64cd\u4f5c\u7b26\uff0c\u8acb\u5be9\u67e5\u5176\u4f7f\u7528\u60c5\u6cc1\uff0c\u78ba\u4fdd\u5b83\u5011\u7684\u61c9\u7528\u6b63\u78ba\u3002\u67e5\u95b1 PostgreSQL \u6587\u6a94\u4ee5\u4e86\u89e3 JSON \u51fd\u6578\u7684\u6b63\u78ba\u8a9e\u6cd5\u548c\u4f7f\u7528\u793a\u4f8b\u3002<\/p>\n<h3 id=\"4-update-postgresql-version-laaamvZjDA\">4. \u66f4\u65b0 PostgreSQL \u7248\u672c<\/h3>\n<p>\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f\u8f03\u820a\u7248\u672c\u7684 PostgreSQL\uff0c\u5efa\u8b70\u8003\u616e\u5347\u7d1a\u5230\u6700\u65b0\u7684\u7a69\u5b9a\u7248\u672c\u3002\u65b0\u7248\u672c\u901a\u5e38\u5305\u542b\u932f\u8aa4\u4fee\u5fa9\u548c\u6539\u9032\uff0c\u53ef\u80fd\u6703\u89e3\u6c7a\u6b64\u932f\u8aa4\u3002<\/p>\n<h3 id=\"5-seek-community-support-laaamvZjDA\">5. \u5c0b\u6c42\u793e\u7fa4\u652f\u63f4<\/h3>\n<p>\u5982\u679c\u60a8\u5df2\u7d93\u6309\u7167\u4ee5\u4e0a\u6b65\u9a5f\u64cd\u4f5c\uff0c\u4f46\u4ecd\u7121\u6cd5\u89e3\u6c7a\u932f\u8aa4\uff0c\u8acb\u5c0b\u6c42 PostgreSQL \u793e\u7fa4\u7684\u5e6b\u52a9\u3002\u5728 PostgreSQL \u90f5\u4ef6\u5217\u8868\u6216\u8ad6\u58c7\u4e0a\u767c\u5e03\u60a8\u7684\u554f\u984c\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u8a73\u60c5\uff0c\u4f8b\u5982 PostgreSQL \u7248\u672c\u3001\u67e5\u8a62\u548c\u5c0e\u81f4\u932f\u8aa4\u7684 JSON \u6578\u64da\u3002\u7d93\u9a57\u8c50\u5bcc\u7684\u793e\u7fa4\u6210\u54e1\u53ef\u4ee5\u70ba\u60a8\u7684\u5177\u9ad4\u60c5\u6cc1\u63d0\u4f9b\u6307\u5c0e\u548c\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"summary-laaamvZjDA\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0cPostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22038 &#8211; singleton_sql_json_item_required \u53ef\u4ee5\u901a\u904e\u9a57\u8b49 JSON \u7d50\u69cb\u3001\u6aa2\u67e5\u7121\u6548\u7684 JSON \u6578\u64da\u3001\u5be9\u67e5 JSON \u51fd\u6578\u548c\u64cd\u4f5c\u7b26\u3001\u66f4\u65b0 PostgreSQL \u7248\u672c\uff0c\u4e26\u5728\u9700\u8981\u6642\u5c0b\u6c42\u793e\u7fa4\u652f\u63f4\u4f86\u89e3\u6c7a\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u514b\u670d\u6b64\u932f\u8aa4\uff0c\u78ba\u4fdd PostgreSQL \u6578\u64da\u5eab\u7684\u9806\u5229\u904b\u884c\u3002<\/p>\n<p>\u5982\u9700\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\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\u60a8\u7684\u696d\u52d9\u9700\u6c42\u63d0\u4f9b\u5353\u8d8a\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\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-21333","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21333","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=21333"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21333\/revisions"}],"predecessor-version":[{"id":24175,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21333\/revisions\/24175"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}