{"id":200822,"date":"2025-05-06T14:33:19","date_gmt":"2025-05-06T06:33:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200822\/"},"modified":"2025-05-06T14:33:19","modified_gmt":"2025-05-06T06:33:19","slug":"%e5%a6%82%e4%bd%95%e6%9f%a5%e8%af%a2%e7%94%a8%e6%88%b7%e5%8f%82%e4%b8%8e%e7%9a%84%e9%a1%b9%e7%9b%ae%ef%bc%8c%e5%bd%93%e7%94%a8%e6%88%b7-id-%e5%ad%98%e5%82%a8%e5%9c%a8%e9%80%97%e5%8f%b7%e5%88%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200822\/","title":{"rendered":"\u5982\u4f55\u67e5\u8be2\u7528\u6237\u53c2\u4e0e\u7684\u9879\u76ee\uff0c\u5f53\u7528\u6237 ID \u5b58\u50a8\u5728\u9017\u53f7\u5206\u9694\u7684\u5217\u8868\u4e2d\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u67e5\u8be2\u7528\u6237\u53c2\u4e0e\u7684\u9879\u76ee\uff0c\u5f53\u7528\u6237 ID \u5b58\u50a8\u5728\u9017\u53f7\u5206\u9694\u7684\u5217\u8868\u4e2d\uff1f<\/h1>\n<p>\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u4e3b\u673a\u5b9d\u8d1d\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241115\/173167977967375623561e8.jpg\" class=\"aligncenter\"><\/p>\n<p>\u5982\u4f55\u7f16\u5199\u4e00\u4e2a in \u76f8\u5173\u7684\u67e5\u8be2\u65b9\u6cd5\uff1f<\/p>\n<p>\u7528\u6237\u8868\u4e2d\u5305\u542b\u4e00\u4e2a id \u5b57\u6bb5\uff0cproject \u8868\u4e2d\u5305\u542b\u4e00\u4e2a user_id \u5b57\u6bb5\uff0c\u5176\u4e2d\u5b58\u50a8\u7740 user \u8868\u4e2d\u7684 id\u3002\u7ba1\u7406\u5458\u9700\u8981\u57fa\u4e8e\u5f53\u524d\u5df2\u767b\u5f55\u7528\u6237\u7684 id\uff0c\u67e5\u8be2\u5176\u53c2\u52a0\u7684\u6bd4\u8d5b\u9879\u76ee\u5217\u8868\u3002<\/p>\n<p>\u7531\u4e8e user_id \u5b57\u6bb5\u7684\u503c\u53ef\u80fd\u662f\u4e00\u4e2a\u5305\u542b\u591a\u4e2a id \u7684\u9017\u53f7\u5206\u9694\u5217\u8868\uff0c\u56e0\u6b64\u76f4\u63a5\u4f7f\u7528 in \u64cd\u4f5c\u7b26\u8fdb\u884c\u67e5\u8be2\u4f1a\u5931\u8d25\u3002<\/p>\n<p>\u89e3\u51b3\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528 find_in_set \u51fd\u6570\uff1a\u6b64\u51fd\u6570\u7528\u4e8e\u67e5\u627e\u4e00\u4e2a\u5b57\u7b26\u4e32\u5728\u4e00\u4e2a\u9017\u53f7\u5206\u9694\u7684\u5217\u8868\u4e2d\u51fa\u73b0\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u8981\u67e5\u627e user_id \u4e3a 21 \u7684\u7528\u6237\u53c2\u52a0\u7684\u9879\u76ee\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/li>\n<\/ol>\n<pre>select * from project where find_in_set(21, user_id)<\/pre>\n<ol>\n<li>\u4f7f\u7528 like \u64cd\u4f5c\u7b26\uff1a\u6b64\u64cd\u4f5c\u7b26\u7528\u4e8e\u5339\u914d\u90e8\u5206\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u8981\u67e5\u627e user_id \u4ee5 21 \u5f00\u5934\u7684\u7528\u6237\u53c2\u52a0\u7684\u9879\u76ee\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/li>\n<\/ol>\n<pre>SELECT * FROM Project WHERE user_id LIKE '21,%' OR user_id LIKE '%,21' OR user_id LIKE '%,21,%' OR user_id = 21<\/pre>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5982\u4f55\u67e5\u8be2\u7528\u6237\u53c2\u4e0e\u7684\u9879\u76ee\uff0c\u5f53\u7528\u6237 ID \u5b58\u50a8\u5728\u9017\u53f7\u5206\u9694\u7684\u5217\u8868\u4e2d\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6570\u636e\u5e93\u77e5\u8bc6\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u67e5\u8be2\u7528\u6237\u53c2\u4e0e\u7684\u9879\u76ee\uff0c\u5f53\u7528\u6237 &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200822","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200822"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200822\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}