{"id":200359,"date":"2025-05-06T09:56:12","date_gmt":"2025-05-06T01:56:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200359\/"},"modified":"2025-05-06T09:56:12","modified_gmt":"2025-05-06T01:56:12","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-mysql-%e8%81%94%e5%90%88%e6%9f%a5%e8%af%a2%e8%8e%b7%e5%8f%96%e5%b5%8c%e5%a5%97-json-%e6%95%b0%e6%8d%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200359\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 MySQL \u8054\u5408\u67e5\u8be2\u83b7\u53d6\u5d4c\u5957 JSON \u6570\u636e\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528 MySQL \u8054\u5408\u67e5\u8be2\u83b7\u53d6\u5d4c\u5957 JSON \u6570\u636e\uff1f<\/h1>\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241102\/173055442367262a377a91c.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql <\/strong>\u4e2d\u7684<strong>\u8054\u5408\u67e5\u8be2\uff1a\u83b7\u53d6\u5d4c\u5957 json \u6570\u636e<\/strong><\/p>\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93 mysql \u4e2d\uff0c\u4e3a\u4e86\u5904\u7406\u4e00\u5bf9\u591a\u5173\u7cfb\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u8054\u5408\u67e5\u8be2\u3002\u7ed9\u5b9a\u4e00\u5f20\u5b66\u751f\u8868 (student) \u548c\u4e00\u5f20\u56fe\u7247\u8868 (images)\uff0c\u5176\u4e2d\u4e00\u5f20\u5b66\u751f\u56fe\u7247\u4e0e\u591a\u4e2a\u56fe\u7247\u76f8\u5173\u8054\uff0c\u6211\u4eec\u7684\u76ee\u6807\u662f\u83b7\u53d6\u4ee5\u4e0b json \u683c\u5f0f\u7684\u67e5\u8be2\u7ed3\u679c\uff1a<\/p>\n<pre>{\n  \"id\": 1,\n  \"name\": \"john doe\",\n  \"images\": [\n    {\n      \"id\": 1,\n      \"url\": \"image1.jpg\"\n    },\n    {\n      \"id\": 2,\n      \"url\": \"image2.jpg\"\n    }\n  ]\n}<\/pre>\n<p><strong>\u63a5\u53e3\u5b9e\u73b0<\/strong><\/p>\n<p>\u8981\u5b9e\u73b0\u6b64\u63a5\u53e3\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b sql \u67e5\u8be2\uff1a<\/p>\n<pre>select\n  s.id,\n  s.name,\n  group_concat(json_object(\"id\", i.id, \"url\", i.url)) as images\nfrom\n  student s\nleft join\n  images i on s.id = i.l_id\ngroup by\n  s.id, s.name<\/pre>\n<p>\u6b64\u67e5\u8be2\u5c06\u57fa\u4e8e\u5b66\u751f id \u5bf9\u7ed3\u679c\u8fdb\u884c\u5206\u7ec4\uff0c\u5e76\u5c06\u56fe\u7247\u4fe1\u606f\u62fc\u63a5\u6210 json \u5b57\u7b26\u4e32\u3002<\/p>\n<p><strong>\u53e6\u4e00\u79cd\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u5728\u5206\u7ec4\u6210\u767e\u4e0a\u5343\u7684\u56fe\u50cf\u65f6\u51fa\u73b0\u6027\u80fd\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u57fa\u4e8e\u56fe\u50cf id \u8fdb\u884c\u5206\u7ec4\uff1a<\/p>\n<pre>SELECT\n  s.id,\n  s.name,\n  JSON_ARRAYAGG(JSON_OBJECT(\"id\", i.id, \"url\", i.url)) AS images\nFROM\n  student s\nLEFT JOIN\n  images i ON s.id = i.l_id\nGROUP BY\n  s.id, s.name<\/pre>\n<p>\u6b64\u67e5\u8be2\u5c06\u4e3a\u6bcf\u5f20\u56fe\u50cf\u751f\u6210\u4e00\u4e2a json \u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528 json_arrayagg \u5c06\u5b83\u4eec\u805a\u5408\u5230\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528 MySQL \u8054\u5408\u67e5\u8be2\u83b7\u53d6\u5d4c\u5957 JSON \u6570\u636e\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528 MySQL 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