{"id":37697,"date":"2023-07-09T11:02:25","date_gmt":"2023-07-09T03:02:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=37697"},"modified":"2023-07-31T00:35:27","modified_gmt":"2023-07-30T16:35:27","slug":"sql-%e6%80%8e%e4%b9%88%e6%a0%b9%e6%8d%ae%e7%88%b6id%e6%9f%a5%e8%af%a2%e4%b8%8b%e4%b8%89%e7%ba%a7%e5%ad%90%e9%9b%86","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/37697.html","title":{"rendered":"sql \u600e\u4e48\u6839\u636e\u7236id\u67e5\u8be2\u4e0b\u4e09\u7ea7\u5b50\u96c6"},"content":{"rendered":"<blockquote class=\"wp-block-quote\">\n<p>\u5728\u6570\u636e\u5e93\u64cd\u4f5c\u4e2d\uff0c\u6839\u636e\u7236ID\u67e5\u8be2\u5176\u5b50\u96c6\u662f\u5e38\u89c1\u9700\u6c42\uff0c\u9002\u7528\u4e8e\u5904\u7406\u6811\u72b6\u6570\u636e\u7ed3\u6784\uff0c\u4f8b\u5982\u7ec4\u7ec7\u7ed3\u6784\u6216\u4ea7\u54c1\u7c7b\u522b\u7b49\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u4f7f\u7528SQL\u6839\u636e\u7236ID\u67e5\u8be2\u5176\u4e0b\u4e09\u7ea7\u5b50\u96c6\uff0c\u6db5\u76d6\u4e00\u7ea7\u5b50\u96c6\u3001\u4e8c\u7ea7\u5b50\u96c6\u548c\u4e09\u7ea7\u5b50\u96c6\u7684\u67e5\u8be2\u65b9\u6cd5\uff0c\u5e76\u5728\u7ed3\u5c3e\u90e8\u5206\u63d0\u4f9b\u4e86\u4e00\u4e9b\u76f8\u5173\u7684\u5ef6\u4f38\u9605\u8bfb\u6750\u6599\u3002<\/p>\n<\/blockquote>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" alt=\"\" class=\"wp-image-37698\" decoding=\"async\" height=\"300\" sizes=\"(max-width: 484px) 100vw, 484px\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/07\/\u6dfb\u52a0\u6807\u9898-8.png?x-oss-process=image\/auto-orient,1\/format,webp\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/07\/\u6dfb\u52a0\u6807\u9898-8.png?x-oss-process=image\/auto-orient,1\/format,webp 484w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/07\/\u6dfb\u52a0\u6807\u9898-8-300x186.png 300w\" width=\"484\"\/><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><strong>\u4e00\u3001\u6982\u8ff0<\/strong><\/h2>\n<p>\u5904\u7406\u6811\u5f62\u6570\u636e\u65f6\uff0c\u6211\u4eec\u5e38\u5e38\u9700\u8981\u6839\u636e\u7236ID\u67e5\u8be2\u5176\u4e0b\u7684\u5b50\u96c6\u3002\u672c\u6587\u5c06\u5f15\u5bfc\u60a8\u5982\u4f55\u4f7f\u7528SQL\u8fdb\u884c\u8fd9\u4e00\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u67e5\u8be2\u4e0b\u4e09\u7ea7\u5b50\u96c6\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u4e8c\u3001\u67e5\u8be2\u65b9\u6cd5\u8be6\u89e3<\/strong><\/h2>\n<p>1. \u4e00\u7ea7\u5b50\u96c6\u67e5\u8be2\uff1a\u76f4\u63a5\u901a\u8fc7WHERE\u5b50\u53e5\u7b5b\u9009\u51fa\u7236ID\u7b49\u4e8e\u6307\u5b9a\u503c\u7684\u8bb0\u5f55\u3002\u4f8b\u5982\uff1a<\/p>\n<p>\u201c`sql<\/p>\n<p>SELECT * FROM table_name WHERE parent_id = your_id;<\/p>\n<p>\u201c`2. \u4e8c\u7ea7\u5b50\u96c6\u67e5\u8be2\uff1a\u5148\u67e5\u8be2\u51fa\u4e00\u7ea7\u5b50\u96c6\uff0c\u518d\u5728\u8fd9\u4e9b\u7ed3\u679c\u4e0a\u8fdb\u884c\u67e5\u8be2\u3002\u8fd9\u9700\u8981\u5d4c\u5957\u67e5\u8be2\u6216JOIN\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n<p>\u201c`sql<\/p>\n<p>SELECT * FROM table_name WHERE parent_id IN (SELECT id FROM table_name WHERE parent_id = your_id);<\/p>\n<p>3. \u4e09\u7ea7\u5b50\u96c6\u67e5\u8be2\uff1a\u540c\u6837\u91c7\u7528\u5d4c\u5957\u67e5\u8be2\u6216JOIN\u64cd\u4f5c\uff0c\u8fdb\u884c\u4e8c\u6b21\u5b50\u96c6\u67e5\u8be2\u3002\u4f8b\u5982\uff1a<\/p>\n<p>\u201c`sql<\/p>\n<p>SELECT * FROM table_name WHERE parent_id IN (SELECT id FROM table_name WHERE parent_id IN (SELECT id FROM table_name WHERE parent_id = your_id));<\/p>\n<p>\u5177\u4f53\u7684\u67e5\u8be2\u8bed\u53e5\u53ef\u80fd\u4f1a\u6839\u636e\u6570\u636e\u5e93\u8868\u7684\u7ed3\u6784\u548c\u67e5\u8be2\u9700\u6c42\u7684\u4e0d\u540c\u800c\u6709\u6240\u6539\u53d8\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u4e09\u3001\u7ed3\u8bed<\/strong><\/h2>\n<p>\u4f7f\u7528SQL\u6839\u636e\u7236ID\u67e5\u8be2\u5b50\u96c6\u662f\u4e00\u79cd\u5e38\u89c1\u4e14\u5b9e\u7528\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u3002\u7406\u89e3\u5e76\u638c\u63e1\u8fd9\u4e00\u6280\u80fd\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u6211\u4eec\u5904\u7406\u6811\u5f62\u6570\u636e\u7684\u6548\u7387\u548c\u51c6\u786e\u6027\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u5ef6\u4f38\u9605\u8bfb<\/strong><\/h2>\n<p>1. SQL\u7684\u9012\u5f52\u67e5\u8be2\uff1a\u6709\u65f6\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u67e5\u8be2\u4e00\u4e2a\u8282\u70b9\u4e0b\u6240\u6709\u5c42\u7ea7\u7684\u5b50\u8282\u70b9\uff0c\u8fd9\u5c31\u9700\u8981\u7528\u5230SQL\u7684\u9012\u5f52\u67e5\u8be2\u529f\u80fd\u3002<\/p>\n<p>2. SQL\u4e2d\u7684JOIN\u64cd\u4f5c\uff1a\u4e86\u89e3\u66f4\u591a\u5173\u4e8eSQL\u4e2d\u7684JOIN\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u8fd9\u4e00\u5f3a\u5927\u7684\u529f\u80fd\u3002<\/p>\n<p>3. \u6811\u5f62\u6570\u636e\u7684\u5904\u7406\uff1a\u6811\u5f62\u6570\u636e\u5728\u6570\u636e\u5e93\u4e2d\u7684\u5b58\u50a8\u548c\u5904\u7406\u662f\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u95ee\u9898\uff0c\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u8fd9\u65b9\u9762\u7684\u77e5\u8bc6\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u8bbe\u8ba1\u548c\u4f18\u5316\u6211\u4eec\u7684\u6570\u636e\u5e93\u7ed3\u6784\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728\u6570\u636e\u5e93\u64cd\u4f5c\u4e2d\uff0c\u6839\u636e\u7236ID\u67e5\u8be2\u5176\u5b50\u96c6\u662f\u5e38\u89c1\u9700\u6c42\uff0c\u9002\u7528\u4e8e\u5904\u7406\u6811\u72b6\u6570\u636e\u7ed3\u6784\uff0c\u4f8b\u5982\u7ec4\u7ec7\u7ed3\u6784\u6216\u4ea7\u54c1\u7c7b\u522b\u7b49\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u89e3 [&hellip;]","protected":false},"author":1,"featured_media":37698,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/37697"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=37697"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/37697\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/37698"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=37697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=37697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=37697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}