{"id":210,"date":"2023-03-15T15:47:34","date_gmt":"2023-03-15T07:47:34","guid":{"rendered":"https:\/\/www.road-trip.cc\/?p=210"},"modified":"2023-03-15T15:47:34","modified_gmt":"2023-03-15T07:47:34","slug":"mysql-json%e5%b8%b8%e7%94%a8%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/www.road-trip.cc\/?p=210","title":{"rendered":"Mysql json\u5e38\u7528\u64cd\u4f5c"},"content":{"rendered":"\n<p>\u8868\u7ed3\u6784\u548c\u6d4b\u8bd5\u6570\u636e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql> show create table tags \\G\n*************************** 1. row ***************************\n       Table: tags\nCreate Table: CREATE TABLE `tags` (\n  `uuid` varchar(128) DEFAULT NULL,\n  `values` json DEFAULT NULL,\n  KEY `uuid_idx_1` (`uuid`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci\n1 row in set (0.00 sec)<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql> select * from tags where uuid ='1' \\G\n*************************** 1. row ***************************\nuuid: 1\nvalues: {\"k1\": \"value1\", \"k2\": \"value2\"}\n1 row in set (0.00 sec)<\/code><\/pre>\n\n\n\n<p><strong>\u7ed9uuid=1\u7684\u6807\u7b7e\u589e\u52a0\u4e00\u4e2akey: \u4f7f\u7528json_merge<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql> update tags set values = json_merge(values, '{\"200\" : \"abc\"}') where uuid = '1';<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f\uff1a\u4f7f\u7528json_merge\u65f6\uff0c\u5982\u679c\u6ca1\u6709\u8fd9\u4e2akey\uff0c\u4f1a\u65b0\u589e\uff0c\u82e5\u6709\uff0c\u5219\u4f1a\u628a\u65b0value\u5408\u5e76\u5230\u539fkey\u7684value\uff0c\u5f62\u6210\u6570\u7ec4<\/p>\n\n\n\n<p><strong>\u7ed9uuid=1\u7684\u6807\u7b7e\u589e\u52a0\u4e00\u4e2akey\uff1a\u4f7f\u7528json_set<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql> update tags set values = json_set(values, '$.\"400\"', \"123456\") where uuid = '1';<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f\uff1a\u4f7f\u7528json_set\u65f6\uff0c\u5982\u679c\u6ca1\u6709\u8fd9\u4e2akey\uff0c\u4f1a\u65b0\u589e\uff0c\u82e5\u6709\uff0c\u5219\u4f1a\u88ab\u66ff\u6362\u3002<\/p>\n\n\n\n<p><strong>\u7ed9uuid=1\u7684\u6807\u7b7e\u5220\u6389\u4e00\u4e2akey\uff0c\u4f7f\u7528json_remove<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql> update tags set values = json_remove(values, '$.\"100\"') where uuid = '1';<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u8868\u7ed3\u6784\u548c\u6d4b\u8bd5\u6570\u636e \u7ed9uuid=1\u7684\u6807\u7b7e\u589e\u52a0\u4e00\u4e2akey: \u4f7f\u7528json_merge \u6ce8\u610f\uff1a\u4f7f\u7528json_merg &#8230; <a title=\"Mysql json\u5e38\u7528\u64cd\u4f5c\" class=\"read-more\" href=\"https:\/\/www.road-trip.cc\/?p=210\" aria-label=\"\u9605\u8bfb Mysql json\u5e38\u7528\u64cd\u4f5c\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[58,41],"class_list":["post-210","post","type-post","status-publish","format-standard","hentry","category-7","tag-json","tag-mysql"],"_links":{"self":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=210"}],"version-history":[{"count":1,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/210\/revisions"}],"predecessor-version":[{"id":211,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=\/wp\/v2\/posts\/210\/revisions\/211"}],"wp:attachment":[{"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.road-trip.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}