{"id":41608,"date":"2023-11-02T15:02:41","date_gmt":"2023-03-06T04:39:52","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8postgresql%e5%a4%84%e7%90%86jsonb\/"},"modified":"2024-05-04T07:09:48","modified_gmt":"2024-05-03T23:09:48","slug":"%e4%bd%bf%e7%94%a8postgresql%e5%a4%84%e7%90%86jsonb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8postgresql%e5%a4%84%e7%90%86jsonb\/","title":{"rendered":"\u4f7f\u7528PostgreSQL\u5904\u7406JSONB"},"content":{"rendered":"

\u5728\u67e5\u627eJSONB\u6982\u8ff0\u548c\u529f\u80fd\u65f6\u7684\u4e34\u65f6\u5907\u5fd8\u5f55\u3002<\/p>\n

JSONB \u662f\u4e00\u79cd\u57fa\u4e8eJSON\u7684\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\u3002<\/h2>\n

\u6839\u636e\u6587\u4ef6\u663e\u793a<\/p>\n

\u6709\u4e24\u79cdJSON\u6570\u636e\u7c7b\u578b\uff1ajson\u548cjsonb\u3002\u5b83\u4eec\u51e0\u4e4e\u63a5\u53d7\u76f8\u540c\u7684\u8f93\u5165\u503c\u3002\u4e3b\u8981\u5b9e\u9645\u533a\u522b\u5728\u4e8e\u6548\u7387\u3002json\u6570\u636e\u7c7b\u578b\u5b58\u50a8\u8f93\u5165\u6587\u672c\u7684\u7cbe\u786e\u526f\u672c\uff0c\u5728\u6bcf\u6b21\u6267\u884c\u65f6\u5904\u7406\u51fd\u6570\u5fc5\u987b\u91cd\u65b0\u89e3\u6790\uff1b\u800cjsonb\u6570\u636e\u4ee5\u5206\u89e3\u7684\u4e8c\u8fdb\u5236\u683c\u5f0f\u5b58\u50a8\u3002<\/p><\/blockquote>\n

JSON\u4f3c\u4e4e\u6709\u4e00\u500b\u4ee5\u6587\u672c\u5f62\u5f0f\u4fdd\u5b58\u7684\u7248\u672c\uff0c\u4e5f\u6709\u4e00\u500b\u4fdd\u5b58\u70badecomposed binary format\u7684\u7248\u672c\uff08\u672a\u67e5\u660edecomposed binary format\u7684\u7d30\u7bc0\uff09\u3002<\/p>\n

\u5728PostgreSQL\u4e2d\uff0c\u4f7f\u7528JSONB\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u5b9e\u73b0\u66f4\u5feb\u7684\u64cd\u4f5c\u3002\u8be5\u6570\u636e\u7c7b\u578b\u4e0eJSON\u76f8\u6bd4\u5177\u6709\u4ee5\u4e0b\u4f18\u7f3a\u70b9\u3002<\/p>\n

\u597d\u5904<\/h3>\n
    \n
  • \n
      \u3088\u308a\u52b9\u7387\u7684<\/ul>\n<\/li>\n<\/ul>\n

       <\/p>\n

        \n
      • \n
          \u51e6\u7406\u306e\u9ad8\u901f\u5316<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n

            \n
          • \n
              \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u30b5\u30dd\u30fc\u30c8<\/ul>\n<\/li>\n<\/ul>\n

               <\/p>\n

                \u3088\u308a\u30b7\u30f3\u30d7\u30eb\u306a\u30b9\u30ad\u30fc\u30de\u30c7\u30b6\u30a4\u30f3<\/ul>\n

                \u7f3a\u70b9<\/h3>\n
                  \n
                • \n
                    \u5c11\u3057\u5165\u529b\uff08Insert?)\u304c\u9045\u3044<\/ul>\n<\/li>\n<\/ul>\n

                     <\/p>\n

                      \n
                    • \n
                        \u30c6\u30fc\u30d6\u30eb\u306e\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u304c\u5927\u304d\u304f\u3001\u3088\u308adisk space\u304c\u5fc5\u8981<\/ul>\n<\/li>\n<\/ul>\n

                         <\/p>\n

                          \u7279\u5b9a\u306e\u30af\u30a8\u30ea\uff08\u7279\u306baggregation\uff09\u304c\u9045\u3044<\/ul>\n

                          \u521b\u5efa\u684c\u5b50<\/h2>\n
                          # CREATE TABLE test (dummy_id serial NOT NULL, data jsonb);\r\n<\/code><\/pre>\n
                          \u8bf7\u586b\u5165\u3002<\/h2>\n
                          # INSERT INTO test VALUES (1, '{\"some_key\":\"some_value\"}');\r\nINSERT 0 1\r\n<\/code><\/pre>\n
                          \u9009\u62e9<\/h2>\n
                          JSON\u64cd\u4f5c\u7b26<\/h3>\n
                          9\u670815\u65e5\u3002JSON\u51fd\u6570\u548c\u64cd\u4f5c\u7b26\u3002<\/p>\n
                          \u9009\u62e9\uff08\u5173\u952e\u8981\u7d20\uff09<\/h3>\n
                          # INSERT INTO test VALUES (1, '{\"some_key\":\"some_value\"}');\r\nINSERT 0 1\r\n# SELECT data->'some_key' AS some_key FROM test;\r\n   some_key\r\n--------------\r\n \"some_value\"\r\n(1 row)\r\n<\/code><\/pre>\n
                          \u9009\u62e9(\u6570\u7ec4\u5143\u7d20)<\/h3>\n
                          # INSERT INTO test VALUES (1, '[\"a\",\"b\",\"c\",\"d\",\"e\"]');\r\nINSERT 0 1\r\n# SELECT data->1 FROM test;\r\n ?column?\r\n----------\r\n \"b\"\r\n(1 row)\r\n<\/code><\/pre>\n
                          \u67e5\u8be2\uff08\u67e5\u627e\u5305\u542b\u7279\u5b9a\u503c\u7684\u8bb0\u5f55\uff09<\/h2>\n
                          # INSERT INTO test VALUES (1, '[\"a\",\"b\",\"c\"]');\r\nINSERT 0 1\r\n# SELECT * FROM test WHERE data ? 'a';\r\n dummy_id |      data\r\n----------+-----------------\r\n        1 | [\"a\", \"b\", \"c\"]\r\n(1 row)\r\n<\/code><\/pre>\n
                          \u67e5\u8be2\uff08\u5305\u542b\u7279\u5b9a\u503c\u7684\u6240\u6709\/\u4efb\u610f\u8bb0\u5f55\uff09<\/h2>\n
                          # INSERT INTO test VALUES (1, '[\"a\",\"b\",\"c\"]');\r\nINSERT 0 1\r\n# SELECT * FROM test WHERE data ?| array['a', 'b'];\r\n dummy_id |      data\r\n----------+-----------------\r\n        1 | [\"a\", \"b\", \"c\"]\r\n(1 row)\r\n# SELECT * FROM test WHERE data ?& array['a', 'b'];\r\n dummy_id |      data\r\n----------+-----------------\r\n        1 | [\"a\", \"b\", \"c\"]\r\n(1 row)\r\n<\/code><\/pre>\n
                          \u521b\u5efa\u7d22\u5f15<\/h2>\n
                          The default GIN operator class for jsonb supports queries with the @>, ?, ?& and ?| operators. \r\n<\/code><\/pre>\n
                            \n
                          • \n
                              \u7279\u5b9a\u306eJSON\u3092\u542b\u3093\u3067\u3044\u308b\u304b\/\u542b\u307e\u308c\u3066\u3044\u308b\u304b<\/ul>\n<\/li>\n<\/ul>\n
                               <\/p>\n
                                \n
                              • \n
                                  \u7279\u5b9a\u306e\u5024\u304c\u30ad\u30fc\u307e\u305f\u306f\u8981\u7d20\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u304b<\/ul>\n<\/li>\n<\/ul>\n
                                   <\/p>\n
                                    \u30ad\u30fc\u307e\u305f\u306f\u8981\u7d20\u3092\u542b\u3093\u3067\u3044\u308b\u304b<\/ul>\n
                                    # CREATE INDEX idx_some_key ON test USING gin ((data->'some_key'));\r\nCREATE INDEX\r\n<\/code><\/pre>\n
                                    \u6709\u4e24\u4e2a\u9009\u9879\uff0cjson_ops\u548cjson_path_ops\uff0c\u5176\u4e2d\u9ed8\u8ba4\u4e3ajson_ops\u3002<\/p>\n
                                    \u4ece\u6570\u7ec4\u4e2d\u7279\u5b9a\u7684\u5143\u7d20\u5f00\u59cb\u641c\u7d22\u3002<\/p>\n
                                    select<\/span> dataset_item_id<\/span>,<\/span> attributes<\/span> from<\/span> dataset_items<\/span>,<\/span> jsonb_array_elements<\/span>(<\/span>dataset_items<\/span>.<\/span>attributes<\/span>-><\/span>'classification'<\/span>)<\/span> element<\/span> WHERE<\/span> element<\/span>->><\/span>'label'<\/span> =<\/span> 'cat'<\/span>;<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
                                    \u5728\u67e5\u627eJSONB\u6982\u8ff0\u548c\u529f\u80fd\u65f6\u7684\u4e34\u65f6\u5907\u5fd8\u5f55\u3002 JSONB \u662f\u4e00\u79cd\u57fa\u4e8eJSON\u7684\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\u3002 \u6839\u636e\u6587\u4ef6\u663e\u793a \u6709 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41608","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528PostgreSQL\u5904\u7406JSONB - 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\/\u4f7f\u7528postgresql\u5904\u7406jsonb\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528PostgreSQL\u5904\u7406JSONB\" \/>\n<meta property=\"og:description\" content=\"\u5728\u67e5\u627eJSONB\u6982\u8ff0\u548c\u529f\u80fd\u65f6\u7684\u4e34\u65f6\u5907\u5fd8\u5f55\u3002 JSONB \u662f\u4e00\u79cd\u57fa\u4e8eJSON\u7684\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\u3002 \u6839\u636e\u6587\u4ef6\u663e\u793a \u6709 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528postgresql\u5904\u7406jsonb\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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