{"id":80764,"date":"2024-10-16T14:44:15","date_gmt":"2024-10-16T06:44:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/80764\/"},"modified":"2024-10-16T14:44:16","modified_gmt":"2024-10-16T06:44:16","slug":"mysql%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%99%95%e7%90%86%e4%b9%8b%e4%b8%80%e5%80%8b%e5%ad%97%e6%ae%b5%e5%8c%85%e5%90%ab%e5%a4%9a%e5%80%8bid%e7%9a%84%e8%a7%a3%e6%b1%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/80764\/","title":{"rendered":"MySQL\u5b57\u7b26\u4e32\u8655\u7406\u4e4b\u4e00\u500b\u5b57\u6bb5\u5305\u542b\u591a\u500bID\u7684\u89e3\u6c7a"},"content":{"rendered":"

MySQL\u5b57\u7b26\u4e32\u8655\u7406\u4e4b\u4e00\u500b\u5b57\u6bb5\u5305\u542b\u591a\u500bID\u7684\u89e3\u6c7a<\/h1>\n

\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u7d93\u5e38\u6703\u9047\u5230\u4e00\u500b\u5b57\u6bb5\u4e2d\u5305\u542b\u591a\u500bID\u7684\u60c5\u6cc1\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u51fa\u73fe\u5728\u9700\u8981\u5b58\u5132\u591a\u5c0d\u591a\u95dc\u4fc2\u7684\u5834\u666f\u4e2d\uff0c\u4f8b\u5982\u7528\u6236\u8207\u89d2\u8272\u7684\u95dc\u4fc2\u3002\u96d6\u7136\u9019\u6a23\u7684\u8a2d\u8a08\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u770b\u4f3c\u65b9\u4fbf\uff0c\u4f46\u5728\u6578\u64da\u67e5\u8a62\u548c\u8655\u7406\u4e0a\u537b\u6703\u5e36\u4f86\u4e0d\u5c11\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MySQL\u4e2d\u6709\u6548\u8655\u7406\u9019\u985e\u5b57\u7b26\u4e32\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

\u554f\u984c\u63cf\u8ff0<\/h2>\n

\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba users<\/code> \u7684\u8868\uff0c\u8a72\u8868\u4e2d\u6709\u4e00\u500b\u5b57\u6bb5 role_ids<\/code>\uff0c\u7528\u4f86\u5b58\u5132\u7528\u6236\u7684\u89d2\u8272ID\uff0c\u683c\u5f0f\u70ba\u9017\u865f\u5206\u9694\u7684\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982\uff1a1,2,3<\/code>\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97\u6211\u5011\u5728\u67e5\u8a62\u7528\u6236\u89d2\u8272\u6642\u8b8a\u5f97\u8907\u96dc\uff0c\u56e0\u70ba\u9700\u8981\u5c0d\u5b57\u7b26\u4e32\u9032\u884c\u89e3\u6790\u3002<\/p>\n

\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848<\/h2>\n

1. \u4f7f\u7528FIND_IN_SET\u51fd\u6578<\/h3>\n

MySQL\u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70ba FIND_IN_SET<\/code> \u7684\u51fd\u6578\uff0c\u53ef\u4ee5\u7528\u4f86\u67e5\u627e\u67d0\u500b\u503c\u662f\u5426\u5b58\u5728\u65bc\u9017\u865f\u5206\u9694\u7684\u5b57\u7b26\u4e32\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u67e5\u8a62\uff0c\u7528\u65bc\u67e5\u627e\u64c1\u6709\u7279\u5b9a\u89d2\u8272ID\u7684\u7528\u6236\uff1a<\/p>\n

SELECT * FROM users WHERE FIND_IN_SET('2', role_ids) > 0;<\/code><\/pre>\n
\u9019\u6a23\u7684\u67e5\u8a62\u80fd\u5920\u8fd4\u56de\u6240\u6709\u64c1\u6709\u89d2\u8272ID\u70ba2\u7684\u7528\u6236\u3002\u7136\u800c\uff0c\u9019\u7a2e\u65b9\u6cd5\u5728\u6578\u64da\u91cf\u8f03\u5927\u6642\u6027\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u56e0\u70ba\u5b83\u7121\u6cd5\u5229\u7528\u7d22\u5f15\u3002<\/p>\n
2. \u4f7f\u7528LIKE\u904b\u7b97\u7b26<\/h3>\n
\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528 LIKE<\/code> \u904b\u7b97\u7b26\u4f86\u67e5\u627e\u5305\u542b\u7279\u5b9aID\u7684\u7528\u6236\uff1a<\/p>\n
SELECT * FROM users WHERE role_ids LIKE '2' OR role_ids LIKE '2,%' OR role_ids LIKE '%,2,%' OR role_ids LIKE '%,2';<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u540c\u6a23\u5b58\u5728\u6027\u80fd\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u6578\u64da\u91cf\u589e\u5927\u6642\uff0c\u67e5\u8a62\u6548\u7387\u6703\u986f\u8457\u4e0b\u964d\u3002<\/p>\n
3. \u6b63\u898f\u5316\u6578\u64da\u5eab\u8a2d\u8a08<\/h3>\n
\u6700\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u662f\u5c0d\u6578\u64da\u5eab\u9032\u884c\u6b63\u898f\u5316\u3002\u5c07\u591a\u5c0d\u591a\u7684\u95dc\u4fc2\u62c6\u5206\u6210\u5169\u500b\u8868\uff0c\u4f8b\u5982 users<\/code> \u548c roles<\/code>\uff0c\u4e26\u5275\u5efa\u4e00\u500b\u806f\u7d50\u8868 user_roles<\/code> \u4f86\u5b58\u5132\u7528\u6236\u8207\u89d2\u8272\u7684\u95dc\u4fc2\uff1a<\/p>\n
CREATE TABLE user_roles (\n    user_id INT,\n    role_id INT,\n    PRIMARY KEY (user_id, role_id)\n);<\/code><\/pre>\n
\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u9084\u80fd\u5920\u66f4\u597d\u5730\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\u3002\u67e5\u8a62\u7528\u6236\u89d2\u8272\u7684SQL\u8a9e\u53e5\u5c07\u8b8a\u5f97\u7c21\u55ae\u660e\u4e86\uff1a<\/p>\n
SELECT * FROM users u\nJOIN user_roles ur ON u.id = ur.user_id\nWHERE ur.role_id = 2;<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
\u5728MySQL\u4e2d\u8655\u7406\u4e00\u500b\u5b57\u6bb5\u5305\u542b\u591a\u500bID\u7684\u60c5\u6cc1\uff0c\u96d6\u7136\u6709\u591a\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u5be6\u73fe\uff0c\u4f46\u6700\u7d42\u7684\u89e3\u6c7a\u65b9\u6848\u61c9\u8a72\u662f\u6839\u64da\u5177\u9ad4\u7684\u696d\u52d9\u9700\u6c42\u4f86\u9078\u64c7\u3002\u5982\u679c\u6578\u64da\u91cf\u8f03\u5c0f\u4e14\u67e5\u8a62\u983b\u7387\u4e0d\u9ad8\uff0c\u4f7f\u7528 FIND_IN_SET<\/code> \u6216 LIKE<\/code> \u53ef\u80fd\u662f\u53ef\u884c\u7684\u3002\u7136\u800c\uff0c\u5c0d\u65bc\u5927\u591a\u6578\u60c5\u6cc1\uff0c\u9032\u884c\u6578\u64da\u5eab\u7684\u6b63\u898f\u5316\u8a2d\u8a08\u5c07\u662f\u66f4\u70ba\u9ad8\u6548\u548c\u53ef\u7dad\u8b77\u7684\u9078\u64c7\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u512a\u5316\u7684\u8cc7\u8a0a\uff0c\u60a8\u53ef\u4ee5\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 Server.HK<\/a>\uff0c\u6211\u5011\u63d0\u4f9b\u5404\u7a2e VPS<\/a> \u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\u548c\u61c9\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22MySQL\u5b57\u7b26\u4e32\u8655\u7406\u6280\u5de7\uff0c\u89e3\u6c7a\u5b57\u6bb5\u4e2d\u5305\u542b\u591a\u500bID\u7684\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u8207\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-80764","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80764","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=80764"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80764\/revisions"}],"predecessor-version":[{"id":80765,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80764\/revisions\/80765"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=80764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=80764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=80764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}