\u5728\u4f7f\u7528PostgreSQL\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u932f\u8aa4\u4ee3\u78bc22037\uff0c\u8a72\u932f\u8aa4\u901a\u5e38\u8868\u793a\u5728JSON\u5c0d\u8c61\u4e2d\u5b58\u5728\u975e\u552f\u4e00\u9375\u3002\u9019\u610f\u5473\u8457\u5728\u4e00\u500bJSON\u5c0d\u8c61\u4e2d\uff0c\u67d0\u4e9b\u9375\u88ab\u91cd\u8907\u5b9a\u7fa9\uff0c\u9019\u6703\u5c0e\u81f4\u6578\u64da\u7684\u89e3\u6790\u548c\u5b58\u53d6\u51fa\u73fe\u554f\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u6210\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u4fee\u5fa9\u65b9\u6cd5\u3002<\/p>\n
PostgreSQL\u7684JSON\u6578\u64da\u985e\u578b\u5141\u8a31\u7528\u6236\u4ee5\u9375\u503c\u5c0d\u7684\u5f62\u5f0f\u5b58\u5132\u6578\u64da\u3002\u7136\u800c\uff0c\u6839\u64daJSON\u7684\u898f\u7bc4\uff0c\u6bcf\u500b\u9375\u5fc5\u9808\u662f\u552f\u4e00\u7684\u3002\u5982\u679c\u5728\u63d2\u5165\u6216\u66f4\u65b0JSON\u6578\u64da\u6642\uff0c\u767c\u73fe\u6709\u91cd\u8907\u7684\u9375\uff0cPostgreSQL\u5c07\u8fd4\u56de\u932f\u8aa4\u4ee3\u78bc22037\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n
\u4fee\u5fa9\u6b64\u932f\u8aa4\u7684\u7b2c\u4e00\u6b65\u662f\u78ba\u5b9a\u91cd\u8907\u9375\u7684\u4f86\u6e90\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4fee\u5fa9\u65b9\u6cd5\uff1a<\/p>\n
\n-- \u5047\u8a2d\u6709\u4e00\u500bJSON\u5c0d\u8c61\u5982\u4e0b\uff1a\nSELECT '{\"key1\": \"value1\", \"key1\": \"value2\"}'::json;\n<\/code><\/pre>\n\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c”key1″\u88ab\u91cd\u8907\u5b9a\u7fa9\u3002\u8981\u4fee\u5fa9\u6b64\u554f\u984c\uff0c\u61c9\u78ba\u4fdd\u6bcf\u500b\u9375\u90fd\u662f\u552f\u4e00\u7684\uff1a<\/p>\n
\nSELECT '{\"key1\": \"value1\", \"key2\": \"value2\"}'::json;\n<\/code><\/pre>\n2. \u4f7f\u7528JSON\u51fd\u6578\u6aa2\u67e5\u91cd\u8907\u9375<\/h3>\n
PostgreSQL\u63d0\u4f9b\u4e86\u4e00\u4e9b\u51fd\u6578\u4f86\u8655\u7406JSON\u6578\u64da\u3002\u53ef\u4ee5\u4f7f\u7528\u9019\u4e9b\u51fd\u6578\u4f86\u6aa2\u67e5\u548c\u6e05\u7406\u91cd\u8907\u9375\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5JSON\u5c0d\u8c61\u4e2d\u7684\u9375\uff1a<\/p>\n
\nSELECT jsonb_object_keys('{\"key1\": \"value1\", \"key1\": \"value2\"}'::jsonb);\n<\/code><\/pre>\n\u9019\u5c07\u8fd4\u56de\u6240\u6709\u9375\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6aa2\u67e5\u662f\u5426\u6709\u91cd\u8907\u7684\u9375\u3002<\/p>\n
3. \u81ea\u52d5\u5316\u6e05\u7406\u904e\u7a0b<\/h3>\n
\u5982\u679c\u9700\u8981\u8655\u7406\u5927\u91cf\u6578\u64da\uff0c\u53ef\u4ee5\u8003\u616e\u7de8\u5beb\u4e00\u500b\u81ea\u52d5\u5316\u8173\u672c\u4f86\u6e05\u7406\u91cd\u8907\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n
\nCREATE OR REPLACE FUNCTION clean_json(json_data jsonb) RETURNS jsonb AS $$\nDECLARE\n result jsonb := '{}'::jsonb;\nBEGIN\n SELECT jsonb_object_agg(key, value) INTO result\n FROM jsonb_each(json_data)\n GROUP BY key;\n RETURN result;\nEND;\n$$ LANGUAGE plpgsql;\n<\/code><\/pre>\n\u9019\u500b\u51fd\u6578\u5c07\u81ea\u52d5\u53bb\u9664\u91cd\u8907\u9375\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u4e7e\u6de8\u7684JSON\u5c0d\u8c61\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
PostgreSQL\u932f\u8aa4\u4ee3\u78bc22037 – non_unique_keys_in_a_json_object\u901a\u5e38\u662f\u7531\u65bcJSON\u5c0d\u8c61\u4e2d\u5b58\u5728\u91cd\u8907\u9375\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u6578\u64da\u3001\u4f7f\u7528\u5167\u5efa\u51fd\u6578\u4ee5\u53ca\u81ea\u52d5\u5316\u6e05\u7406\u904e\u7a0b\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u9999\u6e2fVPS<\/a>\u548c\u96f2\u4f3a\u670d\u5668<\/a>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc22037\uff0c\u89e3\u6c7aJSON\u5c0d\u8c61\u4e2d\u7684\u975e\u552f\u4e00\u9375\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u548c\u67e5\u8a62\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-178778","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178778","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=178778"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178778\/revisions"}],"predecessor-version":[{"id":178779,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178778\/revisions\/178779"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}