{"id":841,"date":"2025-02-11T13:49:06","date_gmt":"2025-02-11T05:49:06","guid":{"rendered":"https:\/\/www.ikaros.love\/?p=841"},"modified":"2025-02-11T13:49:06","modified_gmt":"2025-02-11T05:49:06","slug":"mysql%e5%bb%ba%e7%ab%8b%e7%b4%a2%e5%bc%95%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.ikaros.love\/?p=841","title":{"rendered":"mysql\u5efa\u7acb\u7d22\u5f15\u793a\u4f8b"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u793a\u4f8b\u8868<\/mark><\/p>\n\n\n\n

CREATE TABLE user (\nid INT AUTO_INCREMENT PRIMARY KEY COMMENT '\u552f\u4e00\u6807\u8bc6\u6bcf\u4e2a\u7528\u6237\u7684ID',\nusername VARCHAR(255) NOT NULL UNIQUE COMMENT '\u7528\u6237\u540d\uff0c\u7528\u4e8e\u767b\u5f55\u7cfb\u7edf',\npassword VARCHAR(255) NOT NULL COMMENT '\u7528\u6237\u5bc6\u7801\u7684\u54c8\u5e0c\u503c',\nemail VARCHAR(255) NOT NULL UNIQUE COMMENT '\u7528\u6237\u90ae\u7bb1',\nfirst_name VARCHAR(255) COMMENT '\u7528\u6237\u7684\u540d\u5b57',\nlast_name VARCHAR(255) COMMENT '\u7528\u6237\u7684\u59d3\u6c0f',\nphone_number VARCHAR(20) COMMENT '\u7528\u6237\u7684\u7535\u8bdd\u53f7\u7801',\naddress VARCHAR(255) COMMENT '\u7528\u6237\u7684\u5730\u5740',\ncity VARCHAR(100) COMMENT '\u7528\u6237\u6240\u5728\u7684\u57ce\u5e02',\nstate VARCHAR(100) COMMENT '\u7528\u6237\u6240\u5728\u7684\u5dde\u6216\u7701\u4efd',\npostal_code VARCHAR(20) COMMENT '\u7528\u6237\u7684\u90ae\u653f\u7f16\u7801',\ncountry VARCHAR(100) COMMENT '\u7528\u6237\u6240\u5728\u7684\u56fd\u5bb6',\ndate_of_birth DATE COMMENT '\u7528\u6237\u7684\u51fa\u751f\u65e5\u671f',\ngender ENUM('Male', 'Female', 'Other') COMMENT '\u7528\u6237\u7684\u6027\u522b',\ncreated_at DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '\u7528\u6237\u8bb0\u5f55\u521b\u5efa\u7684\u65f6\u95f4',\nupdated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '\u7528\u6237\u8bb0\u5f55\u6700\u540e\u66f4\u65b0\u7684\u65f6\u95f4',\nstatus ENUM('Active', 'Inactive', 'Pending') DEFAULT 'Active' COMMENT '\u7528\u6237\u7684\u72b6\u6001',\nrole_id INT COMMENT '\u7528\u6237\u7684\u89d2\u8272ID\uff0c\u901a\u5e38\u4e0e\u89d2\u8272\u8868\u5173\u8054',\nprofile_picture VARCHAR(255) COMMENT '\u7528\u6237\u7684\u5934\u50cf\u56fe\u7247\u8def\u5f84',\nverification_code VARCHAR(255) COMMENT '\u7528\u6237\u7684\u9a8c\u8bc1\u4ee3\u7801\uff0c\u7528\u4e8e\u8d26\u6237\u9a8c\u8bc1\u6216\u5bc6\u7801\u91cd\u7f6e',\nis_verified BOOLEAN DEFAULT FALSE COMMENT '\u7528\u6237\u662f\u5426\u5df2\u7ecf\u9a8c\u8bc1\u4e86\u4ed6\u4eec\u7684\u7535\u5b50\u90ae\u4ef6\u5730\u5740',\nlast_login DATETIME COMMENT '\u7528\u6237\u4e0a\u6b21\u767b\u5f55\u7684\u65f6\u95f4'\n);<\/code><\/pre>\n\n\n\n
\u601d\u8def<\/mark><\/p>\n\n\n\n
\u6211\u73b0\u5728\u8981\u4f18\u5316\u8fd9\u4e2aMySQL\u8868\u7684\u7d22\u5f15\u3002\u9996\u5148\uff0c\u6211\u9700\u8981\u7406\u89e3\u8fd9\u4e2a\u8868\u7684\u7ed3\u6784\u548c\u7528\u9014\u3002\u8fd9\u4e2a\u8868\u662f\u7528\u6237\u8868\uff0c\u5b58\u50a8\u7528\u6237\u7684\u57fa\u672c\u4fe1\u606f\uff0c\u5305\u62ec\u7528\u6237\u540d\u3001\u5bc6\u7801\u3001\u90ae\u7bb1\u3001\u4e2a\u4eba\u8d44\u6599\u7b49\u7b49\u3002\u4e3b\u952e\u662fid\uff0c\u81ea\u589e\u7684\uff0c\u8fd9\u6ca1\u95ee\u9898\u3002\u8fd8\u6709username\u548cemail\u5b57\u6bb5\u90fd\u662fUNIQUE\u7684\uff0c\u6240\u4ee5\u5b83\u4eec\u5e94\u8be5\u5df2\u7ecf\u6709\u552f\u4e00\u7d22\u5f15\u4e86\u3002<\/p>\n\n\n\n
\u63a5\u4e0b\u6765\uff0c\u6211\u8981\u8003\u8651\u54ea\u4e9b\u5b57\u6bb5\u4f1a\u88ab\u9891\u7e41\u7528\u4e8e\u67e5\u8be2\u3001\u6392\u5e8f\u6216\u8005\u8fde\u63a5\u3002\u6bd4\u5982\uff0c\u7528\u6237\u767b\u5f55\u65f6\u53ef\u80fd\u4f1a\u7528username\u6216email\u6765\u67e5\u627e\uff0c\u6240\u4ee5\u8fd9\u4e24\u4e2a\u5b57\u6bb5\u5df2\u7ecf\u6709\u552f\u4e00\u7d22\u5f15\uff0c\u5e94\u8be5\u8db3\u591f\u3002\u4f46\u662f\u53ef\u80fd\u9700\u8981\u8003\u8651\u5176\u4ed6\u67e5\u8be2\u7684\u60c5\u51b5\uff0c\u6bd4\u5982\u6309\u72b6\u6001\uff08status\uff09\u3001\u89d2\u8272\uff08role_id\uff09\u3001\u6700\u540e\u767b\u5f55\u65f6\u95f4\uff08last_login\uff09\u6765\u7b5b\u9009\u7528\u6237\u3002\u7ba1\u7406\u540e\u53f0\u53ef\u80fd\u4f1a\u6709\u8fd9\u6837\u7684\u67e5\u8be2\u9700\u6c42\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0c\u50cfcreated_at\u548cupdated_at\u8fd9\u7c7b\u65f6\u95f4\u5b57\u6bb5\uff0c\u5982\u679c\u7ecf\u5e38\u9700\u8981\u6309\u65f6\u95f4\u8303\u56f4\u67e5\u8be2\u6216\u8005\u6392\u5e8f\uff0c\u53ef\u80fd\u4e5f\u9700\u8981\u7d22\u5f15\u3002\u4f8b\u5982\uff0c\u67e5\u627e\u6700\u8fd1\u6ce8\u518c\u7684\u7528\u6237\uff0c\u6216\u8005\u7edf\u8ba1\u67d0\u6bb5\u65f6\u95f4\u5185\u7684\u6d3b\u8dc3\u7528\u6237\u3002<\/p>\n\n\n\n
\u8fd8\u6709\u7ec4\u5408\u67e5\u8be2\u7684\u60c5\u51b5\u3002\u6bd4\u5982\uff0c\u540c\u65f6\u6839\u636estatus\u548crole_id\u6765\u8fc7\u6ee4\u7528\u6237\uff0c\u8fd9\u65f6\u5019\u53ef\u80fd\u9700\u8981\u4e00\u4e2a\u8054\u5408\u7d22\u5f15\u3002\u8054\u5408\u7d22\u5f15\u7684\u987a\u5e8f\u5f88\u91cd\u8981\uff0c\u5e94\u8be5\u628a\u533a\u5206\u5ea6\u9ad8\u7684\u5b57\u6bb5\u653e\u5728\u524d\u9762\uff0c\u6216\u8005\u6839\u636e\u67e5\u8be2\u6761\u4ef6\u7684\u987a\u5e8f\u6765\u5b9a\u3002<\/p>\n\n\n\n
\u6bd4\u5982\uff0c\u5982\u679c\u6709\u67e5\u8be2\u6761\u4ef6WHERE status = ‘Active’ AND role_id = 2\uff0c\u90a3\u4e48\u5efa\u7acb\u4e00\u4e2a(status, role_id)\u7684\u8054\u5408\u7d22\u5f15\u53ef\u80fd\u4f1a\u66f4\u597d\uff0c\u8fd9\u6837\u53ef\u4ee5\u5229\u7528\u7d22\u5f15\u7684\u6700\u5de6\u524d\u7f00\u539f\u5219\u3002\u4f46\u662f\u5982\u679c\u67e5\u8be2\u4e2d\u5355\u72ec\u4f7f\u7528role_id\u7684\u60c5\u51b5\u8f83\u591a\uff0c\u53ef\u80fd\u5c31\u9700\u8981\u5355\u72ec\u7684\u7d22\u5f15\uff0c\u6216\u8005\u8c03\u6574\u8054\u5408\u7d22\u5f15\u7684\u987a\u5e8f\u3002\u4e0d\u8fc7\u5355\u72ec\u4e3arole_id\u5efa\u7d22\u5f15\u53ef\u80fd\u66f4\u597d\uff0c\u56e0\u4e3a\u8054\u5408\u7d22\u5f15\u53ea\u6709\u5728\u4f7f\u7528\u5de6\u8fb9\u7684\u5b57\u6bb5\u65f6\u624d\u6709\u6548\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0cphone_number\u5b57\u6bb5\u5982\u679c\u7ecf\u5e38\u7528\u6765\u67e5\u627e\u7528\u6237\uff0c\u53ef\u80fd\u4e5f\u9700\u8981\u7d22\u5f15\u3002\u6bd4\u5982\u7528\u6237\u901a\u8fc7\u7535\u8bdd\u53f7\u7801\u767b\u5f55\u6216\u8005\u627e\u56de\u5bc6\u7801\uff0c\u8fd9\u65f6\u5019\u5982\u679c\u6ca1\u6709\u7d22\u5f15\uff0c\u67e5\u8be2\u4f1a\u5168\u8868\u626b\u63cf\uff0c\u6548\u7387\u4f4e\u3002<\/p>\n\n\n\n
\u8fd8\u6709\uff0c\u50cfverification_code\u5b57\u6bb5\u53ef\u80fd\u5728\u7528\u6237\u9a8c\u8bc1\u7684\u65f6\u5019\u4f1a\u88ab\u67e5\u8be2\uff0c\u4f46\u8fd9\u79cd\u67e5\u8be2\u53ef\u80fd\u9891\u7387\u4e0d\u9ad8\uff0c\u800c\u4e14code\u901a\u5e38\u662f\u552f\u4e00\u7684\uff0c\u53ef\u4ee5\u8003\u8651\u52a0\u7d22\u5f15\u3002\u4e0d\u8fc7\u5982\u679c\u8be5\u5b57\u6bb5\u4f7f\u7528\u6b21\u6570\u5f88\u5c11\uff0c\u53ef\u80fd\u6ca1\u5fc5\u8981\uff0c\u9700\u8981\u6839\u636e\u5b9e\u9645\u4e1a\u52a1\u60c5\u51b5\u5224\u65ad\u3002<\/p>\n\n\n\n
date_of_birth\u5b57\u6bb5\u5982\u679c\u7ecf\u5e38\u9700\u8981\u6309\u5e74\u9f84\u7b5b\u9009\u7528\u6237\uff0c\u53ef\u80fd\u9700\u8981\u7d22\u5f15\u3002\u6216\u8005\u50cf\u6839\u636e\u57ce\u5e02\u3001\u56fd\u5bb6\u7b49\u5730\u7406\u4f4d\u7f6e\u8fdb\u884c\u67e5\u8be2\uff0c\u5982\u679c\u8fd9\u7c7b\u67e5\u8be2\u9891\u7e41\uff0c\u53ef\u80fd\u9700\u8981\u4e3acity\u3001state\u3001country\u7b49\u5b57\u6bb5\u52a0\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u8fd8\u6709\uff0clast_login\u5b57\u6bb5\u53ef\u80fd\u7528\u4e8e\u67e5\u8be2\u6700\u8fd1\u6d3b\u8dc3\u7684\u7528\u6237\uff0c\u8fd9\u65f6\u5019\u5982\u679c\u6309last_login\u6392\u5e8f\u6216\u7b5b\u9009\uff0c\u7d22\u5f15\u53ef\u80fd\u6709\u5e2e\u52a9\u3002<\/p>\n\n\n\n
\u4e0d\u8fc7\uff0c\u7d22\u5f15\u4e5f\u4e0d\u662f\u8d8a\u591a\u8d8a\u597d\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u7d22\u5f15\u90fd\u4f1a\u589e\u52a0\u5199\u64cd\u4f5c\u7684\u5f00\u9500\u3002\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\u6570\u636e\u65f6\uff0c\u7d22\u5f15\u9700\u8981\u7ef4\u62a4\uff0c\u6240\u4ee5\u9700\u8981\u6743\u8861\u3002<\/p>\n\n\n\n
\u73b0\u5728\uff0c\u539f\u8868\u4e2d\u5df2\u7ecf\u6709\u7684\u7d22\u5f15\u662f\u4e3b\u952eid\u7684\u805a\u7c07\u7d22\u5f15\uff0c\u4ee5\u53causername\u548cemail\u7684\u552f\u4e00\u7d22\u5f15\u3002\u63a5\u4e0b\u6765\u8981\u8003\u8651\u5176\u4ed6\u53ef\u80fd\u7684\u7d22\u5f15\uff1a<\/p>\n\n\n\n
1. role_id\u5b57\u6bb5\uff1a\u5982\u679c\u7ecf\u5e38\u6839\u636e\u89d2\u8272\u67e5\u8be2\u7528\u6237\uff0c\u6bd4\u5982\u67e5\u627e\u6240\u6709\u7ba1\u7406\u5458\u7528\u6237\uff08role_id=1\uff09\uff0c\u5e94\u8be5\u4e3arole_id\u5efa\u7acb\u7d22\u5f15\u3002<\/p>\n\n\n\n
2. status\u5b57\u6bb5\uff1a\u53ef\u80fd\u6709\u5f88\u591a\u67e5\u8be2\u6839\u636e\u72b6\u6001\u7b5b\u9009\u7528\u6237\uff0c\u5982\u72b6\u6001\u4e3aActive\u7684\u7528\u6237\uff0c\u7d22\u5f15\u4f1a\u52a0\u5feb\u8fd9\u7c7b\u67e5\u8be2\u3002<\/p>\n\n\n\n
3. created_at\uff1a\u6309\u6ce8\u518c\u65f6\u95f4\u6392\u5e8f\u6216\u7b5b\u9009\uff0c\u6bd4\u5982\u6700\u8fd1\u4e00\u5468\u6ce8\u518c\u7684\u7528\u6237\uff0c\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u3002<\/p>\n\n\n\n
4. \u8054\u5408\u7d22\u5f15\uff1a\u6bd4\u5982status\u548crole_id\u7684\u7ec4\u5408\uff0c\u6216\u8005country\u548ccity\u7684\u7ec4\u5408\uff0c\u89c6\u67e5\u8be2\u9700\u6c42\u800c\u5b9a\u3002<\/p>\n\n\n\n
5. phone_number\uff1a\u5982\u679c\u6709\u6839\u636e\u7535\u8bdd\u53f7\u7801\u67e5\u8be2\u7684\u9700\u6c42\uff0c\u5e94\u8be5\u52a0\u7d22\u5f15\u3002<\/p>\n\n\n\n
6. last_login\uff1a\u53ef\u80fd\u9700\u8981\u6309\u6700\u540e\u767b\u5f55\u65f6\u95f4\u6392\u5e8f\uff0c\u6216\u8005\u7b5b\u9009\u957f\u65f6\u95f4\u672a\u767b\u5f55\u7684\u7528\u6237\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0c\u7ec4\u5408\u7d22\u5f15\u7684\u987a\u5e8f\u9700\u8981\u6839\u636e\u67e5\u8be2\u7684\u6761\u4ef6\u548c\u987a\u5e8f\u6765\u5b9a\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6709\u67e5\u8be2\u540c\u65f6\u4f7f\u7528status\u548crole_id\uff0c\u5e76\u4e14status\u7684\u9009\u62e9\u6027\u6bd4role_id\u9ad8\uff0c\u90a3\u4e48\u628astatus\u653e\u5728\u524d\u9762\u4f1a\u66f4\u597d\u3002<\/p>\n\n\n\n
\u8fd8\u9700\u8981\u8003\u8651\u662f\u5426\u6709ORDER BY\u6216\u8005JOIN\u7684\u60c5\u51b5\u3002\u6bd4\u5982\uff0c\u5728\u5206\u9875\u67e5\u8be2\u7528\u6237\u65f6\uff0c\u6309created_at\u5012\u5e8f\u6392\u5217\uff0c\u8fd9\u65f6\u5019\u5982\u679c\u6709WHERE\u6761\u4ef6\u52a0\u4e0aORDER BY\uff0c\u5408\u9002\u7684\u7d22\u5f15\u53ef\u4ee5\u907f\u514dfilesort\u3002<\/p>\n\n\n\n
\u6bd4\u5982\uff0c\u67e5\u8be2\u6d3b\u8dc3\u7528\u6237\u5e76\u6309\u6ce8\u518c\u65f6\u95f4\u6392\u5e8f\uff1a<\/p>\n\n\n\n
SELECT * FROM user WHERE status=’Active’ ORDER BY created_at DESC;<\/p>\n\n\n\n
\u8fd9\u65f6\u5019\uff0c\u4e00\u4e2a(status, created_at)\u7684\u8054\u5408\u7d22\u5f15\u4f1a\u6709\u6548\uff0c\u56e0\u4e3aWHERE\u6761\u4ef6\u4f7f\u7528status\uff0cORDER BY\u4f7f\u7528created_at\uff0c\u7d22\u5f15\u53ef\u4ee5\u540c\u65f6\u6ee1\u8db3\u8fd9\u4e24\u4e2a\u9700\u6c42\u3002<\/p>\n\n\n\n
\u518d\u6bd4\u5982\uff0c\u67e5\u627e\u67d0\u4e2a\u89d2\u8272\u4e0b\u672a\u9a8c\u8bc1\u7684\u7528\u6237\uff1a<\/p>\n\n\n\n
SELECT * FROM user WHERE role_id=2 AND is_verified=0;<\/p>\n\n\n\n
\u8fd9\u65f6\u5019\u53ef\u80fd\u9700\u8981\u4e00\u4e2a(role_id, is_verified)\u7684\u8054\u5408\u7d22\u5f15\uff0c\u6216\u8005\u5355\u72ec\u7684role_id\u7d22\u5f15\uff0c\u5982\u679cis_verified\u7684\u9009\u62e9\u6027\u4e0d\u9ad8\uff08\u6bd4\u5982\u5927\u90e8\u5206\u7528\u6237\u5df2\u7ecf\u9a8c\u8bc1\uff09\uff0c\u5355\u72ecrole_id\u53ef\u80fd\u8db3\u591f\u3002<\/p>\n\n\n\n
\u4e0d\u8fc7\uff0cis_verified\u7684\u5e03\u5c14\u5b57\u6bb5\u53ef\u80fd\u53ea\u6709\u4e24\u4e2a\u503c\uff0c\u5355\u72ec\u7d22\u5f15\u53ef\u80fd\u610f\u4e49\u4e0d\u5927\uff0c\u4f46\u5982\u679c\u548c\u522b\u7684\u5b57\u6bb5\u7ec4\u5408\uff0c\u53ef\u80fd\u4f1a\u6709\u7528\u3002<\/p>\n\n\n\n
\u5bf9\u4e8e\u6027\u522bgender\u5b57\u6bb5\uff0c\u53ef\u80fd\u9009\u62e9\u6027\u8f83\u4f4e\uff0c\u5355\u72ec\u7d22\u5f15\u53ef\u80fd\u4e0d\u592a\u6709\u7528\uff0c\u4f46\u5982\u679c\u548c\u5176\u4ed6\u5b57\u6bb5\u7ec4\u5408\u67e5\u8be2\uff0c\u53ef\u4ee5\u8003\u8651\u52a0\u5165\u8054\u5408\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u73b0\u5728\u603b\u7ed3\u53ef\u80fd\u7684\u7d22\u5f15\uff1a<\/p>\n\n\n\n
– role_id \u5355\u5217\u7d22\u5f15<\/p>\n\n\n\n
– status \u5355\u5217\u7d22\u5f15<\/p>\n\n\n\n
– created_at \u5355\u5217\u7d22\u5f15<\/p>\n\n\n\n
– (status, created_at) \u8054\u5408\u7d22\u5f15<\/p>\n\n\n\n
– (role_id, status) \u8054\u5408\u7d22\u5f15<\/p>\n\n\n\n
– phone_number \u5355\u5217\u7d22\u5f15<\/p>\n\n\n\n
– last_login \u5355\u5217\u7d22\u5f15<\/p>\n\n\n\n
– verification_code \u5355\u5217\u7d22\u5f15\uff08\u5982\u679c\u67e5\u8be2\u9891\u7e41\uff09<\/p>\n\n\n\n
– country, state, city \u7684\u7ec4\u5408\u7d22\u5f15\uff08\u5982\u679c\u7ecf\u5e38\u6309\u8fd9\u4e9b\u5730\u7406\u4f4d\u7f6e\u7b5b\u9009\uff09<\/p>\n\n\n\n
\u4f46\u9700\u8981\u6839\u636e\u5b9e\u9645\u67e5\u8be2\u6a21\u5f0f\u6765\u8c03\u6574\u3002\u6bd4\u5982\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u9ad8\u9891\u67e5\u8be2\u662f\u6839\u636estatus\u548ccreated_at\u6765\u83b7\u53d6\u7528\u6237\uff0c\u90a3\u4e48\u8054\u5408\u7d22\u5f15\u66f4\u597d\u3002\u5982\u679c\u5355\u72ec\u67e5\u8be2created_at\u7684\u60c5\u51b5\u591a\uff0c\u53ef\u80fd\u9700\u8981\u5355\u72ec\u7684\u7d22\u5f15\uff0c\u5426\u5219\u8054\u5408\u7d22\u5f15\u53ef\u80fd\u8db3\u591f\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0c\u5982\u679c\u5b58\u5728\u8303\u56f4\u67e5\u8be2\uff0c\u6bd4\u5982created_at BETWEEN ‘2023-01-01’ AND ‘2023-12-31’\uff0c\u90a3\u4e48\u7d22\u5f15\u7684\u987a\u5e8f\u53ef\u80fd\u9700\u8981\u8c03\u6574\u3002\u4f46\u5982\u679c\u662f\u8054\u5408\u7d22\u5f15\uff0c\u8303\u56f4\u67e5\u8be2\u540e\u9762\u7684\u5217\u53ef\u80fd\u65e0\u6cd5\u4f7f\u7528\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u8fd8\u9700\u8981\u6ce8\u610f\uff0c\u5f53\u6709\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\u65f6\uff0c\u8054\u5408\u7d22\u5f15\u53ef\u80fd\u8986\u76d6\u66f4\u591a\u7684\u67e5\u8be2\u573a\u666f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6709\u591a\u4e2a\u67e5\u8be2\u7ec4\u5408\u4e0d\u540c\u7684\u5b57\u6bb5\uff0c\u53ef\u80fd\u9700\u8981\u4e0d\u540c\u7684\u8054\u5408\u7d22\u5f15\uff0c\u4f46\u7d22\u5f15\u592a\u591a\u4f1a\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n\n\n\n
\u4f8b\u5982\uff0c\u5047\u8bbe\u5e38\u89c1\u67e5\u8be2\u6709\uff1a<\/p>\n\n\n\n
1. WHERE status = ‘Active’ ORDER BY created_at DESC<\/p>\n\n\n\n
2. WHERE role_id = 5 AND status = ‘Pending’<\/p>\n\n\n\n
3. WHERE country = ‘USA’ AND city = ‘New York’<\/p>\n\n\n\n
4. WHERE phone_number = ‘123456789’<\/p>\n\n\n\n
5. WHERE last_login < ‘2023-01-01’ \u67e5\u627e\u4e0d\u6d3b\u8dc3\u7528\u6237<\/p>\n\n\n\n
\u9488\u5bf9\u8fd9\u4e9b\u60c5\u51b5\uff1a<\/p>\n\n\n\n
– \u67e5\u8be21\u9700\u8981(status, created_at)\u7684\u8054\u5408\u7d22\u5f15\u3002<\/p>\n\n\n\n
– \u67e5\u8be22\u9700\u8981(role_id, status)\u7684\u8054\u5408\u7d22\u5f15\uff0c\u6216\u8005\u5355\u72ec\u7d22\u5f15\uff0c\u4f46\u8054\u5408\u7d22\u5f15\u53ef\u80fd\u66f4\u9ad8\u6548\u3002<\/p>\n\n\n\n
– \u67e5\u8be23\u53ef\u80fd\u9700\u8981(country, state, city)\u7684\u8054\u5408\u7d22\u5f15\uff0c\u4f46\u5177\u4f53\u8981\u770b\u67e5\u8be2\u6761\u4ef6\u662f\u5426\u5e38\u4e00\u8d77\u4f7f\u7528\u3002<\/p>\n\n\n\n
– \u67e5\u8be24\u9700\u8981phone_number\u7684\u7d22\u5f15\u3002<\/p>\n\n\n\n
– \u67e5\u8be25\u9700\u8981last_login\u7684\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u6b64\u5916\uff0c\u5982\u679cverification_code\u7528\u4e8e\u5bc6\u7801\u91cd\u7f6e\u7b49\u64cd\u4f5c\uff0c\u867d\u7136\u9891\u7387\u53ef\u80fd\u4e0d\u9ad8\uff0c\u4f46\u6bcf\u6b21\u64cd\u4f5c\u9700\u8981\u5feb\u901f\u67e5\u8be2\uff0c\u6240\u4ee5\u53ef\u4ee5\u52a0\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b57\u6bb5\u662fVARCHAR(255)\uff0c\u53ef\u80fd\u6bd4\u8f83\u957f\uff0c\u9700\u8981\u8003\u8651\u7d22\u5f15\u5927\u5c0f\uff0c\u4f46\u56e0\u4e3a\u662f\u552f\u4e00\u67e5\u8be2\uff0c\u6240\u4ee5\u7d22\u5f15\u662f\u5fc5\u8981\u7684\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0c\u5bf9\u4e8eENUM\u7c7b\u578b\u7684\u5b57\u6bb5\uff0c\u6bd4\u5982status\uff0cgender\u7b49\uff0c\u5b83\u4eec\u7684\u7d22\u5f15\u6548\u679c\u548c\u666e\u901a\u5b57\u7b26\u4e32\u5b57\u6bb5\u7c7b\u4f3c\uff0c\u4f46\u53ef\u80fd\u56e0\u4e3a\u679a\u4e3e\u503c\u5c11\uff0c\u9009\u62e9\u6027\u4f4e\uff0c\u5355\u72ec\u7d22\u5f15\u53ef\u80fd\u6548\u679c\u4e0d\u660e\u663e\uff0c\u4f46\u5982\u679c\u4e0e\u5176\u4ed6\u5b57\u6bb5\u7ec4\u5408\uff0c\u53ef\u80fd\u4f1a\u6709\u5e2e\u52a9\u3002<\/p>\n\n\n\n
\u63a5\u4e0b\u6765\uff0c\u53ef\u80fd\u9700\u8981\u4e3a\u4ee5\u4e0b\u5b57\u6bb5\u6216\u7ec4\u5408\u521b\u5efa\u7d22\u5f15\uff1a<\/p>\n\n\n\n
– role_id\uff1a\u5355\u72ec\u7d22\u5f15<\/p>\n\n\n\n
– status\uff1a\u5355\u72ec\u7d22\u5f15\uff0c\u6216\u8005\u4e0e\u5176\u4ed6\u5b57\u6bb5\u7ec4\u5408<\/p>\n\n\n\n
– created_at\uff1a\u5355\u72ec\u6216\u7ec4\u5408<\/p>\n\n\n\n
– phone_number\uff1a\u5355\u72ec\u552f\u4e00\u7d22\u5f15\uff1f\u539f\u8868\u4e2dphone_number\u6ca1\u6709\u552f\u4e00\u7ea6\u675f\uff0c\u4f46\u53ef\u80fd\u6709\u4e1a\u52a1\u9700\u6c42\u9700\u8981\u552f\u4e00\uff0c\u4f46\u539f\u8868\u91cc\u6ca1\u6709\uff0c\u6240\u4ee5\u8fd9\u91cc\u53ea\u662f\u666e\u901a\u7d22\u5f15\u3002<\/p>\n\n\n\n
– verification_code\uff1a\u5355\u72ec\u7d22\u5f15<\/p>\n\n\n\n
– last_login\uff1a\u5355\u72ec\u7d22\u5f15<\/p>\n\n\n\n
– (status, created_at)\uff1a\u8054\u5408\u7d22\u5f15<\/p>\n\n\n\n
– (role_id, status)\uff1a\u8054\u5408\u7d22\u5f15<\/p>\n\n\n\n
\u4f46\u9700\u8981\u907f\u514d\u5197\u4f59\u7d22\u5f15\u3002\u6bd4\u5982\uff0c\u5982\u679c\u5df2\u7ecf\u6709\u4e86(status, created_at)\uff0c\u5355\u72ec\u7684status\u7d22\u5f15\u53ef\u80fd\u5197\u4f59\uff0c\u56e0\u4e3a\u8054\u5408\u7d22\u5f15\u7684\u6700\u5de6\u524d\u7f00\u53ef\u4ee5\u7528\u4e8e\u53ea\u4f7f\u7528status\u7684\u67e5\u8be2\u3002\u8fd9\u65f6\u5019\uff0c\u5982\u679c\u5927\u90e8\u5206\u67e5\u8be2\u53ea\u7528status\uff0c\u53ef\u4ee5\u53ea\u5efa\u8054\u5408\u7d22\u5f15\uff0c\u800c\u4e0d\u9700\u8981\u5355\u72ec\u7684status\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u4f46\u9700\u8981\u8003\u8651\uff0c\u5982\u679c\u6709\u4e9b\u67e5\u8be2\u53ea\u4f7f\u7528created_at\uff0c\u800c\u8054\u5408\u7d22\u5f15\u662f(status, created_at)\uff0c\u8fd9\u65f6\u5019\u8fd9\u4e2a\u8054\u5408\u7d22\u5f15\u5bf9\u53ea\u6309created_at\u67e5\u8be2\u7684\u60c5\u51b5\u6ca1\u6709\u5e2e\u52a9\uff0c\u6240\u4ee5\u53ef\u80fd\u9700\u8981\u5355\u72ec\u7684created_at\u7d22\u5f15\u3002\u8fd9\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u6743\u8861\u3002<\/p>\n\n\n\n
\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5047\u8bbe\u6709\u4e24\u4e2a\u67e5\u8be2\uff1a<\/p>\n\n\n\n
A. WHERE status = ‘Active’ ORDER BY created_at<\/p>\n\n\n\n
B. WHERE created_at BETWEEN …<\/p>\n\n\n\n
\u5982\u679c\u67e5\u8be2A\u5f88\u9891\u7e41\uff0c\u90a3\u4e48(status, created_at)\u7684\u8054\u5408\u7d22\u5f15\u5bf9A\u6709\u5e2e\u52a9\uff0c\u800c\u67e5\u8be2B\u9700\u8981\u5355\u72ec\u7684created_at\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u4f46\u5982\u679c\u67e5\u8be2B\u4e5f\u5f88\u9891\u7e41\uff0c\u53ef\u80fd\u9700\u8981\u540c\u65f6\u5b58\u5728\u8fd9\u4e24\u4e2a\u7d22\u5f15\uff0c\u4f46\u4f1a\u589e\u52a0\u5b58\u50a8\u548c\u7ef4\u62a4\u6210\u672c\u3002<\/p>\n\n\n\n
\u7efc\u4e0a\uff0c\u53ef\u80fd\u7684\u7d22\u5f15\u5efa\u8bae\uff1a<\/p>\n\n\n\n
1. \u4e3b\u952eid\uff08\u5df2\u6709\uff09<\/p>\n\n\n\n
2. username\u7684\u552f\u4e00\u7d22\u5f15\uff08\u5df2\u6709\uff09<\/p>\n\n\n\n
3. email\u7684\u552f\u4e00\u7d22\u5f15\uff08\u5df2\u6709\uff09<\/p>\n\n\n\n
4. phone_number\u7684\u7d22\u5f15\uff08\u65b0\uff09<\/p>\n\n\n\n
5. role_id\u7684\u7d22\u5f15\uff08\u65b0\uff09<\/p>\n\n\n\n
6. status\u7684\u7d22\u5f15\uff08\u65b0\uff09\uff0c\u6216\u8005\u8054\u5408\u7d22\u5f15<\/p>\n\n\n\n
7. created_at\u7684\u7d22\u5f15\uff08\u65b0\uff09<\/p>\n\n\n\n
8. (status, created_at)\u7684\u8054\u5408\u7d22\u5f15\uff08\u65b0\uff09<\/p>\n\n\n\n
9. verification_code\u7684\u7d22\u5f15\uff08\u65b0\uff09<\/p>\n\n\n\n
10. last_login\u7684\u7d22\u5f15\uff08\u65b0\uff09<\/p>\n\n\n\n
\u4f46\u9700\u8981\u68c0\u67e5\u662f\u5426\u8054\u5408\u7d22\u5f15\u53ef\u4ee5\u66ff\u4ee3\u591a\u4e2a\u5355\u72ec\u7d22\u5f15\uff0c\u4ee5\u51cf\u5c11\u7d22\u5f15\u6570\u91cf\u3002<\/p>\n\n\n\n
\u6bd4\u5982\uff0c\u5982\u679c\u8054\u5408\u7d22\u5f15(status, created_at)\u5b58\u5728\uff0c\u90a3\u4e48\u5355\u72ec\u7684status\u7d22\u5f15\u53ef\u80fd\u53ef\u4ee5\u53bb\u6389\uff0c\u56e0\u4e3a\u8054\u5408\u7d22\u5f15\u7684\u6700\u5de6\u524d\u7f00\u53ef\u4ee5\u7528\u4e8e\u4ec5status\u7684\u67e5\u8be2\u3002\u4f46\u662f\uff0c\u5982\u679c\u5b58\u5728\u5176\u4ed6\u8054\u5408\u7d22\u5f15\u7684\u60c5\u51b5\uff0c\u6bd4\u5982(status, role_id)\uff0c\u90a3\u4e48\u53ef\u80fd\u9700\u8981\u4e0d\u540c\u7684\u5904\u7406\u3002<\/p>\n\n\n\n
\u6b64\u5916\uff0c\u5bf9\u4e8everification_code\uff0c\u5982\u679c\u8be5\u5b57\u6bb5\u662f\u552f\u4e00\u7684\uff0c\u6bd4\u5982\u6bcf\u4e2a\u7528\u6237\u7684\u9a8c\u8bc1\u7801\u552f\u4e00\uff0c\u90a3\u4e48\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u552f\u4e00\u7d22\u5f15\uff0c\u4f46\u539f\u8868\u4e2d\u5e76\u6ca1\u6709\u552f\u4e00\u7ea6\u675f\uff0c\u6240\u4ee5\u53ef\u80fd\u53ea\u662f\u666e\u901a\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u7efc\u4e0a\uff0c\u6700\u7ec8\u7684\u7d22\u5f15\u5efa\u8bae\u53ef\u80fd\u5982\u4e0b\uff1a<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_role_id (role_id);<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_status (status);<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_created_at (created_at);<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_phone_number (phone_number);<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_verification_code (verification_code);<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_last_login (last_login);<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_status_created_at (status, created_at);<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_role_status (role_id, status);<\/p>\n\n\n\n
\u4e0d\u8fc7\uff0c\u8fd9\u6837\u7684\u7d22\u5f15\u6570\u91cf\u8f83\u591a\uff0c\u53ef\u80fd\u9700\u8981\u6839\u636e\u5b9e\u9645\u67e5\u8be2\u9891\u7387\u548c\u6a21\u5f0f\u8fdb\u884c\u8c03\u6574\u3002\u4f8b\u5982\uff0c\u5982\u679cstatus\u548crole_id\u7ecf\u5e38\u4e00\u8d77\u67e5\u8be2\uff0c\u90a3\u4e48idx_role_status\u53ef\u80fd\u66f4\u597d\u3002\u800c\u5982\u679c\u5355\u72ec\u67e5\u8be2status\u6216role_id\u7684\u60c5\u51b5\u8f83\u591a\uff0c\u53ef\u80fd\u9700\u8981\u5355\u72ec\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0c\u5bf9\u4e8e\u8054\u5408\u7d22\u5f15idx_status_created_at\uff0c\u53ef\u4ee5\u4f18\u5316\u540c\u65f6\u4f7f\u7528status\u548ccreated_at\u7684\u67e5\u8be2\uff0c\u4ee5\u53ca\u4ec5\u4f7f\u7528status\u7684\u67e5\u8be2\u3002\u5982\u679ccreated_at\u7684\u5355\u72ec\u67e5\u8be2\u4e5f\u5f88\u591a\uff0c\u53ef\u80fd\u9700\u8981\u5355\u72ec\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u6b64\u5916\uff0c\u5bf9\u4e8ephone_number\uff0c\u5982\u679c\u4e1a\u52a1\u4e0a\u9700\u8981\u552f\u4e00\uff0c\u5e94\u8be5\u6dfb\u52a0\u552f\u4e00\u7d22\u5f15\uff0c\u4f46\u539f\u8868\u7ed3\u6784\u4e2d\u6ca1\u6709\uff0c\u6240\u4ee5\u8fd9\u91cc\u53ea\u662f\u666e\u901a\u7d22\u5f15\u3002<\/p>\n\n\n\n
\u8fd8\u8981\u6ce8\u610f\uff0c\u957f\u5b57\u7b26\u4e32\u7684\u7d22\u5f15\uff0c\u6bd4\u5982verification_code\u662fVARCHAR(255)\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u6765\u51cf\u5c11\u7d22\u5f15\u5927\u5c0f\uff0c\u4f46\u9700\u8981\u6743\u8861\u9009\u62e9\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n
ALTER TABLE user ADD INDEX idx_verification_code (verification_code(20));<\/p>\n\n\n\n
\u4f46\u53ef\u80fd\u5f71\u54cd\u67e5\u8be2\u6027\u80fd\uff0c\u56e0\u4e3a\u524d\u7f00\u7d22\u5f15\u53ef\u80fd\u5bfc\u81f4\u66f4\u591a\u7684\u626b\u63cf\u3002\u5982\u679cverification_code\u662f\u54c8\u5e0c\u503c\uff0c\u524d20\u4e2a\u5b57\u7b26\u53ef\u80fd\u8db3\u591f\u552f\u4e00\uff0c\u8fd9\u6837\u524d\u7f00\u7d22\u5f15\u662f\u53ef\u884c\u7684\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0c\u5bf9\u4e8elast_login\u7684\u7d22\u5f15\uff0c\u5982\u679c\u67e5\u8be2\u9700\u8981\u6309\u65f6\u95f4\u8303\u56f4\u67e5\u627e\uff0c\u6bd4\u5982\u8d85\u8fc76\u4e2a\u6708\u672a\u767b\u5f55\u7684\u7528\u6237\uff0c\u7d22\u5f15\u4f1a\u5f88\u6709\u5e2e\u52a9\u3002<\/p>\n\n\n\n
\u603b\u7ed3\uff0c\u6700\u7ec8\u7684\u7d22\u5f15\u5efa\u8bae\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u67e5\u8be2\u9700\u6c42\uff0c\u4f46\u57fa\u4e8e\u5e38\u89c1\u7684\u7528\u6237\u8868\u67e5\u8be2\u6a21\u5f0f\uff0c\u4e0a\u8ff0\u7684\u7d22\u5f15\u53ef\u80fd\u662f\u4e00\u4e2a\u5408\u7406\u7684\u8d77\u70b9\u3002\u540c\u65f6\u9700\u8981\u6ce8\u610f\uff0c\u6bcf\u4e2a\u989d\u5916\u7684\u7d22\u5f15\u90fd\u4f1a\u5f71\u54cd\u5199\u5165\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u6839\u636e\u5b9e\u9645\u4e1a\u52a1\u60c5\u51b5\u6743\u8861\u3002<\/p>\n\n\n\n
\u6700\u540e\u5efa\u8bae<\/mark><\/p>\n\n\n\n
\u4e3a\u4e86\u4f18\u5316\u63d0\u4f9b\u7684 user<\/code> \u8868\u7684\u67e5\u8be2\u6027\u80fd\uff0c\u4ee5\u4e0b\u662f\u7d22\u5f15\u5efa\u8bae\u53ca\u8be6\u7ec6\u8bb2\u89e3\uff1a<\/p>\n\n\n\n
\n\n\n\n
1. \u5df2\u5b58\u5728\u7684\u7d22\u5f15<\/strong><\/h3>\n\n\n\n
    \n
  • \u4e3b\u952e\u7d22\u5f15<\/strong>\uff1aid<\/code>\uff08\u81ea\u52a8\u521b\u5efa\uff0c\u805a\u7c07\u7d22\u5f15\uff09<\/li>\n\n\n\n
  • \u552f\u4e00\u7d22\u5f15<\/strong>\uff1ausername<\/code> \u548c email<\/code>\uff08\u786e\u4fdd\u552f\u4e00\u6027\uff09<\/li>\n<\/ul>\n\n\n\n
    \n\n\n\n
    2. \u5efa\u8bae\u65b0\u589e\u7684\u7d22\u5f15<\/strong><\/h3>\n\n\n\n
    (1) \u5355\u5217\u7d22\u5f15<\/strong><\/h4>\n\n\n\n
    ALTER TABLE user\n  ADD INDEX idx_phone_number (phone_number),\n  ADD INDEX idx_role_id (role_id),\n  ADD INDEX idx_status (status),\n  ADD INDEX idx_created_at (created_at),\n  ADD INDEX idx_last_login (last_login),\n  ADD INDEX idx_verification_code (verification_code(64));  -- \u524d\u7f00\u7d22\u5f15\u4f18\u5316\u957f\u5b57\u7b26\u4e32<\/code><\/pre>\n\n\n\n
    \u4f18\u5316\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n
      \n
    • phone_number<\/code><\/strong>\uff1a\u7528\u4e8e\u7535\u8bdd\u53f7\u7801\u67e5\u8be2\uff08\u5982\u767b\u5f55\/\u627e\u56de\u5bc6\u7801\uff09\u3002<\/li>\n\n\n\n
    • role_id<\/code><\/strong>\uff1a\u6309\u89d2\u8272\u7b5b\u9009\u7528\u6237\uff08\u5982\u7ba1\u7406\u540e\u53f0\u67e5\u8be2\uff09\u3002<\/li>\n\n\n\n
    • status<\/code><\/strong>\uff1a\u6309\u7528\u6237\u72b6\u6001\u8fc7\u6ee4\uff08\u5982\u7b5b\u9009\u6d3b\u8dc3\u7528\u6237\uff09\u3002<\/li>\n\n\n\n
    • created_at<\/code><\/strong>\uff1a\u6309\u6ce8\u518c\u65f6\u95f4\u6392\u5e8f\u6216\u8303\u56f4\u67e5\u8be2\uff08\u5982\u6700\u8fd1\u6ce8\u518c\u7528\u6237\uff09\u3002<\/li>\n\n\n\n
    • last_login<\/code><\/strong>\uff1a\u67e5\u627e\u4e0d\u6d3b\u8dc3\u7528\u6237\uff08\u5982\u6700\u540e\u767b\u5f55\u65f6\u95f4\u8d85\u8fc7\u9608\u503c\uff09\u3002<\/li>\n\n\n\n
    • verification_code<\/code><\/strong>\uff1a\u8d26\u6237\u9a8c\u8bc1\u65f6\u5feb\u901f\u67e5\u8be2\uff08\u524d\u7f00\u7d22\u5f15\u5e73\u8861\u957f\u5ea6\u4e0e\u9009\u62e9\u6027\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n
      (2) \u8054\u5408\u7d22\u5f15<\/strong><\/h4>\n\n\n\n
      ALTER TABLE user\n  ADD INDEX idx_status_created_at (status, created_at),\n  ADD INDEX idx_role_status (role_id, status);<\/code><\/pre>\n\n\n\n
      \u4f18\u5316\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n
        \n
      • idx_status_created_at<\/code><\/strong>\uff1a<\/li>\n\n\n\n
      • \u9ad8\u9891\u67e5\u8be2\uff1aWHERE status = 'Active' ORDER BY created_at DESC<\/code>\uff08\u5982\u5206\u9875\u5c55\u793a\u6d3b\u8dc3\u7528\u6237\uff09\u3002<\/li>\n\n\n\n
      • \u8054\u5408\u7d22\u5f15\u76f4\u63a5\u8986\u76d6\u67e5\u8be2\u6761\u4ef6\u548c\u6392\u5e8f\uff0c\u907f\u514d filesort<\/code>\u3002<\/li>\n\n\n\n
      • idx_role_status<\/code><\/strong>\uff1a<\/li>\n\n\n\n
      • \u9ad8\u9891\u67e5\u8be2\uff1aWHERE role_id = 2 AND status = 'Pending'<\/code>\uff08\u5982\u7b5b\u9009\u7279\u5b9a\u89d2\u8272\u7684\u5f85\u5ba1\u7528\u6237\uff09\u3002<\/li>\n\n\n\n
      • \u8054\u5408\u7d22\u5f15\u9ad8\u6548\u5339\u914d\u591a\u6761\u4ef6\u67e5\u8be2\u3002<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n
        3. \u7d22\u5f15\u4f18\u5316\u539f\u5219<\/strong><\/h3>\n\n\n\n
        (1) \u8986\u76d6\u9ad8\u9891\u67e5\u8be2<\/strong><\/h4>\n\n\n\n
          \n
        • WHERE \u6761\u4ef6<\/strong>\uff1a\u4e3a\u9ad8\u9891\u7b5b\u9009\u5b57\u6bb5\uff08\u5982 role_id<\/code>\u3001status<\/code>\uff09\u6dfb\u52a0\u7d22\u5f15\u3002<\/li>\n\n\n\n
        • ORDER BY\/GROUP BY<\/strong>\uff1a\u4e3a\u6392\u5e8f\u5b57\u6bb5\uff08\u5982 created_at<\/code>\uff09\u6dfb\u52a0\u7d22\u5f15\u3002<\/li>\n\n\n\n
        • \u8054\u5408\u7d22\u5f15\u987a\u5e8f<\/strong>\uff1a\u5c06\u533a\u5206\u5ea6\u9ad8\u7684\u5b57\u6bb5\u653e\u5728\u5de6\u4fa7\uff08\u5982 status<\/code> \u533a\u5206\u5ea6\u9ad8\u4e8e created_at<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
          (2) \u907f\u514d\u8fc7\u5ea6\u7d22\u5f15<\/strong><\/h4>\n\n\n\n
            \n
          • \u5199\u6027\u80fd\u635f\u8017<\/strong>\uff1a\u7d22\u5f15\u4f1a\u964d\u4f4e INSERT\/UPDATE\/DELETE<\/code> \u901f\u5ea6\uff0c\u9700\u6743\u8861\u8bfb\u5199\u6bd4\u4f8b\u3002<\/li>\n\n\n\n
          • \u957f\u5b57\u6bb5\u4f18\u5316<\/strong>\uff1a\u5bf9 VARCHAR(255)<\/code> \u4f7f\u7528\u524d\u7f00\u7d22\u5f15\uff08\u5982 verification_code(64)<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
            (3) \u4f7f\u7528 EXPLAIN \u5206\u6790<\/strong><\/h4>\n\n\n\n
            \u901a\u8fc7 EXPLAIN<\/code> \u9a8c\u8bc1\u7d22\u5f15\u662f\u5426\u751f\u6548\uff1a<\/p>\n\n\n\n
            EXPLAIN SELECT * FROM user WHERE status = 'Active' AND role_id = 1;<\/code><\/pre>\n\n\n\n
            \n\n\n\n
            4. \u793a\u4f8b\u67e5\u8be2\u4e0e\u7d22\u5f15\u5339\u914d<\/strong><\/h3>\n\n\n\n
            \u573a\u666f 1\uff1a\u7ba1\u7406\u540e\u53f0\u5206\u9875\u67e5\u8be2\u6d3b\u8dc3\u7528\u6237<\/strong><\/h4>\n\n\n\n
            SELECT * \nFROM user \nWHERE status = 'Active' \nORDER BY created_at DESC \nLIMIT 20 OFFSET 0;<\/code><\/pre>\n\n\n\n
              \n
            • \u4f7f\u7528\u7d22\u5f15<\/strong>\uff1aidx_status_created_at<\/code>\uff08\u76f4\u63a5\u8986\u76d6 WHERE<\/code> \u548c ORDER BY<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
              \u573a\u666f 2\uff1a\u6839\u636e\u89d2\u8272\u548c\u72b6\u6001\u7b5b\u9009\u7528\u6237<\/strong><\/h4>\n\n\n\n
              SELECT * \nFROM user \nWHERE role_id = 2 AND status = 'Pending';<\/code><\/pre>\n\n\n\n
                \n
              • \u4f7f\u7528\u7d22\u5f15<\/strong>\uff1aidx_role_status<\/code>\uff08\u8054\u5408\u7d22\u5f15\u5339\u914d\u591a\u6761\u4ef6\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
                \u573a\u666f 3\uff1a\u6839\u636e\u7535\u8bdd\u53f7\u7801\u5feb\u901f\u67e5\u8be2\u7528\u6237<\/strong><\/h4>\n\n\n\n
                SELECT * \nFROM user \nWHERE phone_number = '+123456789';<\/code><\/pre>\n\n\n\n
                  \n
                • \u4f7f\u7528\u7d22\u5f15<\/strong>\uff1aidx_phone_number<\/code>\uff08\u907f\u514d\u5168\u8868\u626b\u63cf\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
                  \n\n\n\n
                  5. \u6700\u7ec8\u7d22\u5f15\u5217\u8868<\/strong><\/h3>\n\n\n\n
                  CREATE TABLE user (\n    -- \u8868\u7ed3\u6784\u4fdd\u6301\u4e0d\u53d8\uff0c\u4ec5\u6dfb\u52a0\u7d22\u5f15\n    -- ...\n    INDEX idx_phone_number (phone_number),\n    INDEX idx_role_id (role_id),\n    INDEX idx_status (status),\n    INDEX idx_created_at (created_at),\n    INDEX idx_last_login (last_login),\n    INDEX idx_verification_code (verification_code(64)),\n    INDEX idx_status_created_at (status, created_at),\n    INDEX idx_role_status (role_id, status)\n);<\/code><\/pre>\n\n\n\n
                  \n\n\n\n
                  \u603b\u7ed3<\/strong><\/h3>\n\n\n\n
                    \n
                  • \u6838\u5fc3\u601d\u8def<\/strong>\uff1a\u6839\u636e\u67e5\u8be2\u9891\u7387\u3001\u6761\u4ef6\u7ec4\u5408\u548c\u6392\u5e8f\u9700\u6c42\u6dfb\u52a0\u7d22\u5f15\u3002<\/li>\n\n\n\n
                  • \u6743\u8861\u70b9<\/strong>\uff1a\u7d22\u5f15\u7684\u67e5\u8be2\u6536\u76ca\u4e0e\u7ef4\u62a4\u6210\u672c\uff08\u5199\u6027\u80fd\uff09\u3002<\/li>\n\n\n\n
                  • \u52a8\u6001\u8c03\u6574<\/strong>\uff1a\u901a\u8fc7 EXPLAIN<\/code> \u548c\u6162\u67e5\u8be2\u65e5\u5fd7\u6301\u7eed\u4f18\u5316\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
                    \u793a\u4f8b\u8868 \u601d\u8def \u6211\u73b0\u5728\u8981\u4f18\u5316\u8fd9\u4e2aM...<\/p>\n","protected":false},"author":1,"featured_media":842,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[222,221,224],"_links":{"self":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/841"}],"collection":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=841"}],"version-history":[{"count":1,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/841\/revisions"}],"predecessor-version":[{"id":843,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/841\/revisions\/843"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/media\/842"}],"wp:attachment":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}