{"id":21329,"date":"2024-01-02T07:34:22","date_gmt":"2024-01-02T07:34:22","guid":{"rendered":"https:\/\/server.hk\/blog\/21329\/"},"modified":"2024-11-14T10:36:38","modified_gmt":"2024-11-14T02:36:38","slug":"how-to-fix-postgresql-error-code-22034-more_than_one_sql_json_item","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21329\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 – more_than_one_sql_json_item"},"content":{"rendered":"

\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 – more_than_one_sql_json_item<\/h1>\n

PostgreSQL \u662f\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u88ab\u4f01\u696d\u548c\u958b\u767c\u8005\u4f7f\u7528\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\u9806\u66a2\u904b\u884c\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 – more_than_one_sql_json_item\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u539f\u56e0\u4e26\u63d0\u4f9b\u9010\u6b65\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

\u4e86\u89e3 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 – more_than_one_sql_json_item<\/h2>\n

PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 \u767c\u751f\u65bc\u4f7f\u7528 -><\/code> \u64cd\u4f5c\u7b26\u5f9e JSON \u9663\u5217\u4e2d\u63d0\u53d6\u55ae\u500b JSON \u9805\u76ee\u6642\uff0c\u800c\u8a72\u9663\u5217\u5305\u542b\u591a\u500b\u9805\u76ee\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u5728\u8655\u7406 PostgreSQL \u4e2d\u7684 JSON \u6578\u64da\u985e\u578b\u6642\u51fa\u73fe\u3002<\/p>\n

PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 \u7684\u539f\u56e0<\/h2>\n
    \n
  1. JSON \u7d50\u69cb\u932f\u8aa4\uff1a<\/strong> \u5982\u679c JSON \u9663\u5217\u5305\u542b\u591a\u500b\u9805\u76ee\uff0c\u800c\u67e5\u8a62\u671f\u671b\u53ea\u63d0\u53d6\u4e00\u500b\u9805\u76ee\uff0c\u5247\u6703\u767c\u751f\u8a72\u932f\u8aa4\u3002<\/li>\n
  2. \u64cd\u4f5c\u7b26\u4f7f\u7528\u4e0d\u7576\uff1a<\/strong> \u5982\u679c\u4e0d\u6b63\u78ba\u5730\u4f7f\u7528 -><\/code> \u64cd\u4f5c\u7b26\uff0c\u4f8b\u5982\u5617\u8a66\u5f9e\u5305\u542b\u591a\u500b\u9805\u76ee\u7684 JSON \u9663\u5217\u4e2d\u63d0\u53d6\u55ae\u500b\u9805\u76ee\uff0c\u5c31\u6703\u51fa\u73fe\u8a72\u932f\u8aa4\u3002<\/li>\n
  3. \u6578\u64da\u4e0d\u4e00\u81f4\uff1a<\/strong> \u5982\u679c\u6578\u64da\u5eab\u4e2d\u7684 JSON \u6578\u64da\u4e0d\u4e00\u81f4\uff0c\u4e00\u4e9b\u9663\u5217\u5305\u542b\u591a\u500b\u9805\u76ee\uff0c\u800c\u53e6\u4e00\u4e9b\u5305\u542b\u55ae\u500b\u9805\u76ee\uff0c\u4e5f\u53ef\u80fd\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ol>\n

    \u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 \u7684\u89e3\u6c7a\u65b9\u6848<\/h2>\n
      \n
    1. \u4f7f\u7528 ->><\/code> \u64cd\u4f5c\u7b26\uff1a<\/strong> \u8207\u671f\u671b\u55ae\u500b\u9805\u76ee\u7684 -><\/code> \u64cd\u4f5c\u7b26\u4e0d\u540c\uff0c->><\/code> \u64cd\u4f5c\u7b26\u53ef\u5c07\u6574\u500b JSON \u9663\u5217\u63d0\u53d6\u70ba\u6587\u672c\u503c\uff0c\u5f9e\u800c\u907f\u514d\u932f\u8aa4\u3002
      \n
      \u793a\u4f8b\uff1aSELECT json_column->>'key' FROM table_name;<\/code><\/li>\n
    2. \u4f7f\u7528 json_array_elements<\/code> \u51fd\u6578\uff1a<\/strong> \u5982\u679c\u9700\u8981\u5f9e JSON \u9663\u5217\u4e2d\u63d0\u53d6\u500b\u5225\u9805\u76ee\uff0c\u53ef\u4ee5\u4f7f\u7528 json_array_elements<\/code> \u51fd\u6578\u4f86\u89e3\u958b\u9663\u5217\uff0c\u4e26\u5206\u5225\u6aa2\u7d22\u6bcf\u500b\u9805\u76ee\u3002
      \n
      \u793a\u4f8b\uff1aSELECT json_array_elements(json_column) FROM table_name;<\/code><\/li>\n
    3. \u9a57\u8b49\u548c\u6a19\u6e96\u5316 JSON \u6578\u64da\uff1a<\/strong> \u70ba\u907f\u514d JSON \u6578\u64da\u4e0d\u4e00\u81f4\uff0c\u8acb\u78ba\u4fdd\u5728\u5c07\u6578\u64da\u5b58\u5165\u6578\u64da\u5eab\u4e4b\u524d\uff0c\u5c0d\u6578\u64da\u9032\u884c\u9069\u7576\u7684\u9a57\u8b49\u548c\u6a19\u6e96\u5316\u3002\u9019\u5c07\u6709\u52a9\u65bc\u4fdd\u6301\u4e00\u81f4\u7684\u7d50\u69cb\uff0c\u907f\u514d\u50cf 22034 \u9019\u6a23\u7684\u932f\u8aa4\u3002<\/li>\n
    4. \u66f4\u65b0 JSON \u6578\u64da\uff1a<\/strong> \u5982\u679c\u56e0\u6578\u64da\u4e0d\u4e00\u81f4\u5c0e\u81f4\u932f\u8aa4\uff0c\u53ef\u4ee5\u66f4\u65b0\u6578\u64da\uff0c\u78ba\u4fdd\u6240\u6709\u9663\u5217\u53ea\u5305\u542b\u55ae\u500b\u9805\u76ee\uff0c\u6216\u8005\u6839\u64da\u9700\u8981\u4fee\u6539\u67e5\u8a62\u3002<\/li>\n<\/ol>\n

      \u7e3d\u7d50<\/h2>\n

      PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 – more_than_one_sql_json_item \u53ef\u4ee5\u901a\u904e\u4f7f\u7528\u9069\u7576\u7684\u64cd\u4f5c\u7b26\u548c\u51fd\u6578\u4f86\u8655\u7406 JSON \u9663\u5217\u4f86\u89e3\u6c7a\u3002\u901a\u904e\u4f7f\u7528 ->><\/code> \u64cd\u4f5c\u7b26\u6216 json_array_elements<\/code> \u51fd\u6578\uff0c\u60a8\u53ef\u4ee5\u5728\u63d0\u53d6 JSON \u6578\u64da\u6642\u907f\u514d\u8a72\u932f\u8aa4\u3002\u6b64\u5916\uff0c\u9a57\u8b49\u548c\u6a19\u6e96\u5316 JSON \u6578\u64da\u6709\u52a9\u65bc\u9632\u6b62\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u7684\u4e0d\u4e00\u81f4\u60c5\u6cc1\u3002<\/p>\n

      \u5982\u679c\u60a8\u9047\u5230 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a22034 \u6216\u9700\u8981 PostgreSQL \u8a17\u7ba1\u652f\u63f4\uff0c\u8acb\u8003\u616e Server.HK<\/a>\u3002\u6211\u5011\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684 VPS \u89e3\u6c7a\u65b9\u6848\u5c08\u70ba\u6eff\u8db3\u60a8\u7684\u8a17\u7ba1\u9700\u6c42\u800c\u8a2d\u8a08\u3002\u4e86\u89e3\u66f4\u591a\u6211\u5011\u7684\u670d\u52d9\uff0c\u8acb\u8a2a\u554f Server.HK<\/a>\u3002<\/p>\n

      “`<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u5982\u4f55\u4fee\u5fa9 PostgreSQL ...<\/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-21329","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21329","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=21329"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21329\/revisions"}],"predecessor-version":[{"id":24180,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21329\/revisions\/24180"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}