{"id":41904,"date":"2022-12-15T20:34:07","date_gmt":"2023-07-08T14:22:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%9c%89%e6%97%b6%e5%80%99%ef%bc%8cpostgresql%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%ef%bc%8c%e6%9c%89%e6%97%b6%e5%80%99%e5%88%99%e4%b8%8d%e6%98%af%e3%80%82\/"},"modified":"2024-04-29T05:28:00","modified_gmt":"2024-04-28T21:28:00","slug":"%e6%9c%89%e6%97%b6%e5%80%99%ef%bc%8cpostgresql%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%ef%bc%8c%e6%9c%89%e6%97%b6%e5%80%99%e5%88%99%e4%b8%8d%e6%98%af%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%9c%89%e6%97%b6%e5%80%99%ef%bc%8cpostgresql%e4%bb%8e%e9%9b%b6%e5%bc%80%e5%a7%8b%ef%bc%8c%e6%9c%89%e6%97%b6%e5%80%99%e5%88%99%e4%b8%8d%e6%98%af%e3%80%82\/","title":{"rendered":"\u6709\u65f6\u5019\uff0cPostgreSQL\u4ece\u96f6\u5f00\u59cb\uff0c\u6709\u65f6\u5019\u5219\u4e0d\u662f"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u62b1\u6b49\uff0c\u8fd9\u4e0d\u662f\u4e00\u7bc7\u4ece\u96f6\u5f00\u59cb\u5b66\u4e60PostgreSQL\u7684\u5165\u95e8\u6587\u7ae0\u3002\u6807\u9898\u53ef\u80fd\u4f1a\u5f15\u8d77\u8bef\u89e3\u3002<\/p>\n

\u7531\u4e8e\u8fd9\u7bc7\u6587\u7ae0\u975e\u5e38\u6709\u8da3\uff0c\u6240\u4ee5\u6211\u60f3\u81ea\u5df1\u4e3a\u5b83\u53d6\u4e2a\u540d\u5b57\u3002<\/p>\n

PostgreSQL\u7684\u6570\u7ec4\u548cJSON<\/h1>\n

\u5728PostgreSQL\u4e2d\u5b58\u5728\u6570\u7ec4\u7c7b\u578b\u3002
\n\u5728\u57fa\u672c\u89c4\u8303\u5316\u7684\u6570\u636e\u5e93\u8868\u4e2d\u901a\u5e38\u4e0d\u4f1a\u770b\u5230\u5b83\uff0c\u4f46\u662f\u5728\u9700\u8981\u7834\u574f\u89c4\u8303\u5316\u4ee5\u63d0\u9ad8\u6027\u80fd\u6216\u7f16\u5199\u590d\u6742\u67e5\u8be2\u65f6\uff0c\u5b83\u975e\u5e38\u6709\u7528\uff0c\u662f\u4e00\u4e2a\u76f8\u5f53\u9177\u7684\u7279\u6027\u3002<\/p>\n

\u6709\u4e00\u4e2a\u53eb\u505aJSON\u7c7b\u578b\u548cJSONB\u7c7b\u578b\u7684\u4e1c\u897f\u4e5f\u6709\u7c7b\u4f3c\u7684\u7528\u6cd5\u3002\u8fd9\u4e9b\u7c7b\u578b\u4e0e\u4e4b\u524d\u7684\u7c7b\u4f3c\uff0c\u8fd8\u53ef\u4ee5\u6709\u6548\u5730\u5904\u7406\u8981\u5c06\u5176\u89c6\u4e3aJSON\u7684\u6570\u636e\uff0c\u4f8b\u5982API\u54cd\u5e94\u6570\u636e\u3002<\/p>\n

JSONB\u5177\u6709\u5f88\u5f37\u7684\u8868\u9054\u80fd\u529b\uff0c\u53ef\u4ee5\u5275\u5efa\u5404\u7a2e\u4e0d\u540c\u7684JSONB\u3002
\n\u4ee5\u4e0b\u7684\u67e5\u8a62\u90fd\u53ef\u4ee5\u751f\u6210JSONB\u3002<\/p>\n

-- {}<\/span>\r\nselect<\/span> '{}'<\/span>::<\/span>JSONB<\/span>;<\/span>\r\n jsonb<\/span>\r\n------<\/span>\r\n{}<\/span>\r\n(<\/span>1<\/span> row<\/span>)<\/span>\r\n\r\n-- 1<\/span>\r\nselect<\/span> '1'<\/span>::<\/span>JSONB<\/span>;<\/span>\r\n jsonb<\/span> \r\n-------<\/span>\r\n1<\/span>\r\n(<\/span>1<\/span> row<\/span>)<\/span>\r\n\r\nselect<\/span> '[{\"value\":0}]'<\/span>::<\/span>JSONB<\/span>;<\/span>\r\n jsonb<\/span> \r\n-------<\/span>\r\n[{<\/span>\"value\"<\/span>:<\/span> 0<\/span>}]<\/span>\r\n\r\nselect<\/span> NULL<\/span>::<\/span>JSONB<\/span>;<\/span>\r\n jsonb<\/span> \r\n-------<\/span>\r\n[<\/span>NULL<\/span>]<\/span>\r\n<\/code><\/pre>\n
\u672c\u9898<\/h1>\n
\u5f53\u6267\u884c\u4ee5\u4e0b\u4e24\u4e2a\u67e5\u8be2\u65f6\uff0c\u8fd4\u56de\u7684\u503c\u5206\u522b\u662f\u4ec0\u4e48\uff1f<\/p>\n
-- \u30af\u30a8\u30ea1<\/span>\r\nselect<\/span> '[{\"value\":0},{\"value\":1},{\"value\":2}]'<\/span>::<\/span>JSONB<\/span>-><\/span>0<\/span>;<\/span>\r\n-- \u30af\u30a8\u30ea2<\/span>\r\nselect<\/span> (<\/span>array<\/span>[<\/span>0<\/span>,<\/span>1<\/span>,<\/span>2<\/span>])[<\/span>0<\/span>];<\/span>\r\n<\/code><\/pre>\n
\u7b54\u6848\u662f\uff0c\u7b2c\u4e00\u4e2a\u503c\u4e3a{“value”:0}\uff0c\u7b2c\u4e8c\u4e2a\u503c\u4e3a\u7a7a\u503c\u3002<\/p>\n
select<\/span> '[{\"value\":0},{\"value\":1},{\"value\":2}]'<\/span>::<\/span>JSONB<\/span>-><\/span>0<\/span>;<\/span>\r\n jsonb<\/span> \r\n-------<\/span>\r\n{<\/span>\"value\"<\/span>:<\/span> 0<\/span>}<\/span>\r\n\r\nselect<\/span> (<\/span>array<\/span>[<\/span>0<\/span>,<\/span>1<\/span>,<\/span>2<\/span>])[<\/span>0<\/span>];<\/span>\r\n jsonb<\/span> \r\n-------<\/span>\r\n[<\/span>NULL<\/span>]<\/span>\r\n<\/code><\/pre>\n
\u5728PostgreSQL\u4e2d\uff0c\u6570\u7ec4\u4ece1\u5f00\u59cb\u7d22\u5f15\uff0c\u800cJSON\u6570\u7ec4\u4ece0\u5f00\u59cb\u7d22\u5f15\u3002\u4ed4\u7ec6\u8003\u8651\uff0c\u4e00\u4e2a\u8bed\u8a00\u4e2d\u540c\u65f6\u5b58\u5728\u8fd9\u4e24\u79cd\u65b9\u5f0f\u771f\u662f\u975e\u5e38\u4e86\u4e0d\u8d77\u7684\u3002\u4e0d\u8fc7\u6211\u4e0d\u592a\u60f3\u4f7f\u75281\u7d22\u5f15\u6765\u8bbf\u95eeJavaScript Object Notation\uff0c\u4f46\u8fd9\u4e5f\u5e76\u6ca1\u6709\u4ec0\u4e48\u95ee\u9898\u3002\u987a\u4fbf\u95ee\u4e00\u4e0b\uff0cPostgreSQL\u662f\u5426\u652f\u6301\u5199\u5165JSONB\u6570\u7ec4\u7684\u6570\u7ec4\u5462\uff1f<\/p>\n
select<\/span> ((<\/span>array<\/span>[<\/span>'[{\"value\":0}]'<\/span>::<\/span>JSONB<\/span>,<\/span>'[{\"value\":1}]'<\/span>::<\/span>JSONB<\/span>,<\/span>'[{\"value\":2}]'<\/span>::<\/span>JSONB<\/span>])[<\/span>1<\/span>])<\/span>-><\/span>0<\/span>;<\/span>\r\n jsonb<\/span> \r\n-------<\/span>\r\n{<\/span>\"value\"<\/span>:<\/span> 0<\/span>}<\/span>\r\n<\/code><\/pre>\n
\u771f\u662f\u592a\u96be\u8fc7\u4e86\uff01<\/p>\n
\u7e3d\u7d50\u5b8c<\/h1>\n
SELECT<\/span> FROM<\/span> \u30aa\u30c1<\/span>;<\/span>\r\n--<\/span>\r\n(<\/span>1<\/span> rows<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u7ed9\u6211\u4e0d\u540c\u7684\uff0c\u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9\u7684\u4e2d\u6587\u91ca\u4e49\uff1a
\n\u82b1\u7d6e<\/h1>\n
-- JSON\u30d1\u30b9\u3067\u30820\u59cb\u307e\u308a<\/span>\r\nselect<\/span> *<\/span> from<\/span> jsonb_path_query<\/span>(<\/span>'[{\"value\":0},{\"value\":1},{\"value\":2}]'<\/span>::<\/span>JSONB<\/span>,<\/span> '$[0]'<\/span>);<\/span>\r\n jsonb<\/span> \r\n-------<\/span>\r\n{<\/span>\"value\"<\/span>:<\/span> 0<\/span>}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9996\u5148 \u62b1\u6b49\uff0c\u8fd9\u4e0d\u662f\u4e00\u7bc7\u4ece\u96f6\u5f00\u59cb\u5b66\u4e60PostgreSQL\u7684\u5165\u95e8\u6587\u7ae0\u3002\u6807\u9898\u53ef\u80fd\u4f1a\u5f15\u8d77\u8bef\u89e3\u3002 \u7531\u4e8e\u8fd9\u7bc7\u6587\u7ae0\u975e\u5e38\u6709\u8da3\uff0c […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41904","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u6709\u65f6\u5019\uff0cPostgreSQL\u4ece\u96f6\u5f00\u59cb\uff0c\u6709\u65f6\u5019\u5219\u4e0d\u662f - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u6709\u65f6\u5019\uff0cpostgresql\u4ece\u96f6\u5f00\u59cb\uff0c\u6709\u65f6\u5019\u5219\u4e0d\u662f\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6709\u65f6\u5019\uff0cPostgreSQL\u4ece\u96f6\u5f00\u59cb\uff0c\u6709\u65f6\u5019\u5219\u4e0d\u662f\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u62b1\u6b49\uff0c\u8fd9\u4e0d\u662f\u4e00\u7bc7\u4ece\u96f6\u5f00\u59cb\u5b66\u4e60PostgreSQL\u7684\u5165\u95e8\u6587\u7ae0\u3002\u6807\u9898\u53ef\u80fd\u4f1a\u5f15\u8d77\u8bef\u89e3\u3002 \u7531\u4e8e\u8fd9\u7bc7\u6587\u7ae0\u975e\u5e38\u6709\u8da3\uff0c […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u6709\u65f6\u5019\uff0cpostgresql\u4ece\u96f6\u5f00\u59cb\uff0c\u6709\u65f6\u5019\u5219\u4e0d\u662f\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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