{"id":80485,"date":"2024-10-16T14:23:16","date_gmt":"2024-10-16T06:23:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/80485\/"},"modified":"2024-10-16T14:23:16","modified_gmt":"2024-10-16T06:23:16","slug":"mysql%e4%b8%ad%e9%80%9914%e5%80%8b%e5%b0%8f%e7%8e%a9%e6%84%8f%ef%bc%8c%e8%ae%93%e4%ba%ba%e7%9c%bc%e5%89%8d%e4%b8%80%e4%ba%ae%ef%bc%81%ef%bc%81%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/80485\/","title":{"rendered":"MySQL\u4e2d\u901914\u500b\u5c0f\u73a9\u610f\uff0c\u8b93\u4eba\u773c\u524d\u4e00\u4eae\uff01\uff01\uff01"},"content":{"rendered":"<h1 id=\"mysql%e4%b8%ad%e9%80%9914%e5%80%8b%e5%b0%8f%e7%8e%a9%e6%84%8f%ef%bc%8c%e8%ae%93%e4%ba%ba%e7%9c%bc%e5%89%8d%e4%b8%80%e4%ba%ae%ef%bc%81%ef%bc%81%ef%bc%81-IRaWeiONMQ\">MySQL\u4e2d\u901914\u500b\u5c0f\u73a9\u610f\uff0c\u8b93\u4eba\u773c\u524d\u4e00\u4eae\uff01\uff01\uff01<\/h1>\n<p>MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u64c1\u6709\u773e\u591a\u529f\u80fd\u548c\u7279\u6027\uff0c\u80fd\u5920\u6eff\u8db3\u5404\u7a2e\u61c9\u7528\u9700\u6c42\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e14\u500bMySQL\u4e2d\u7684\u5c0f\u73a9\u610f\uff0c\u9019\u4e9b\u7279\u6027\u4e0d\u50c5\u80fd\u63d0\u5347\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u8b93\u6578\u64da\u7ba1\u7406\u8b8a\u5f97\u66f4\u52a0\u9748\u6d3b\u548c\u9ad8\u6548\u3002<\/p>\n<h2 id=\"1-json%e6%94%af%e6%8c%81-IRaWeiONMQ\">1. JSON\u652f\u6301<\/h2>\n<p>MySQL\u5f9e5.7\u7248\u672c\u958b\u59cb\u652f\u6301JSON\u6578\u64da\u985e\u578b\uff0c\u9019\u4f7f\u5f97\u5b58\u5132\u548c\u67e5\u8a62\u7d50\u69cb\u5316\u6578\u64da\u8b8a\u5f97\u66f4\u52a0\u7c21\u55ae\u3002\u4f7f\u7528JSON\u6578\u64da\u985e\u578b\uff0c\u53ef\u4ee5\u8f15\u9b06\u5730\u5b58\u5132\u548c\u6aa2\u7d22\u8907\u96dc\u7684\u6578\u64da\u7d50\u69cb\u3002<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    data JSON\n);\n<\/code><\/pre>\n<h2 id=\"2-%e8%99%9b%e6%93%ac%e5%88%97-IRaWeiONMQ\">2. \u865b\u64ec\u5217<\/h2>\n<p>\u865b\u64ec\u5217\u5141\u8a31\u7528\u6236\u5728\u8868\u4e2d\u5275\u5efa\u8a08\u7b97\u5217\uff0c\u9019\u4e9b\u5217\u7684\u503c\u662f\u57fa\u65bc\u5176\u4ed6\u5217\u7684\u8a08\u7b97\u7d50\u679c\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u5197\u9918\u6578\u64da\u7684\u5b58\u5132\u3002<\/p>\n<pre><code>ALTER TABLE users ADD COLUMN full_name VARCHAR(255) AS (CONCAT(first_name, ' ', last_name));\n<\/code><\/pre>\n<h2 id=\"3-%e5%88%86%e5%8d%80%e8%a1%a8-IRaWeiONMQ\">3. \u5206\u5340\u8868<\/h2>\n<p>\u5206\u5340\u8868\u5141\u8a31\u5c07\u5927\u578b\u8868\u5206\u5272\u6210\u66f4\u5c0f\u7684\u90e8\u5206\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u548c\u7ba1\u7406\u6548\u7387\u3002\u7528\u6236\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u7684\u5217\u9032\u884c\u5206\u5340\u3002<\/p>\n<pre><code>CREATE TABLE sales (\n    id INT,\n    sale_date DATE,\n    amount DECIMAL(10, 2)\n) PARTITION BY RANGE (YEAR(sale_date)) (\n    PARTITION p2020 VALUES LESS THAN (2021),\n    PARTITION p2021 VALUES LESS THAN (2022)\n);\n<\/code><\/pre>\n<h2 id=\"4-%e8%a7%b8%e7%99%bc%e5%99%a8-IRaWeiONMQ\">4. \u89f8\u767c\u5668<\/h2>\n<p>\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5b58\u5132\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u5728\u7279\u5b9a\u4e8b\u4ef6\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002\u9019\u5c0d\u65bc\u6578\u64da\u5b8c\u6574\u6027\u548c\u81ea\u52d5\u5316\u64cd\u4f5c\u975e\u5e38\u6709\u7528\u3002<\/p>\n<pre><code>CREATE TRIGGER before_insert_users\nBEFORE INSERT ON users\nFOR EACH ROW\nSET NEW.created_at = NOW();\n<\/code><\/pre>\n<h2 id=\"5-%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b-IRaWeiONMQ\">5. \u5b58\u5132\u904e\u7a0b<\/h2>\n<p>\u5b58\u5132\u904e\u7a0b\u662f\u4e00\u7d44\u9810\u7de8\u8b6f\u7684SQL\u8a9e\u53e5\uff0c\u53ef\u4ee5\u5728\u6578\u64da\u5eab\u4e2d\u57f7\u884c\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\u4e26\u7c21\u5316\u8907\u96dc\u7684\u64cd\u4f5c\u3002<\/p>\n<pre><code>CREATE PROCEDURE GetUserCount()\nBEGIN\n    SELECT COUNT(*) FROM users;\nEND;\n<\/code><\/pre>\n<h2 id=\"6-%e4%ba%8b%e5%8b%99%e6%94%af%e6%8c%81-IRaWeiONMQ\">6. \u4e8b\u52d9\u652f\u6301<\/h2>\n<p>MySQL\u652f\u6301\u4e8b\u52d9\uff0c\u9019\u610f\u5473\u8457\u7528\u6236\u53ef\u4ee5\u5c07\u591a\u500b\u64cd\u4f5c\u7d44\u5408\u5728\u4e00\u8d77\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<pre><code>START TRANSACTION;\nUPDATE accounts SET balance = balance - 100 WHERE id = 1;\nUPDATE accounts SET balance = balance + 100 WHERE id = 2;\nCOMMIT;\n<\/code><\/pre>\n<h2 id=\"7-%e5%85%a8%e6%96%87%e7%b4%a2%e5%bc%95-IRaWeiONMQ\">7. \u5168\u6587\u7d22\u5f15<\/h2>\n<p>MySQL\u63d0\u4f9b\u5168\u6587\u7d22\u5f15\u529f\u80fd\uff0c\u9019\u4f7f\u5f97\u5728\u6587\u672c\u5b57\u6bb5\u4e2d\u9032\u884c\u9ad8\u6548\u7684\u641c\u7d22\u6210\u70ba\u53ef\u80fd\u3002\u9019\u5c0d\u65bc\u9700\u8981\u641c\u7d22\u5927\u91cf\u6587\u672c\u6578\u64da\u7684\u61c9\u7528\u7279\u5225\u6709\u7528\u3002<\/p>\n<pre><code>CREATE FULLTEXT INDEX idx_fulltext ON articles(title, content);\n<\/code><\/pre>\n<h2 id=\"8-%e8%a4%87%e8%a3%bd%e5%8a%9f%e8%83%bd-IRaWeiONMQ\">8. \u8907\u88fd\u529f\u80fd<\/h2>\n<p>MySQL\u7684\u8907\u88fd\u529f\u80fd\u5141\u8a31\u7528\u6236\u5c07\u6578\u64da\u5f9e\u4e00\u500b\u6578\u64da\u5eab\u5be6\u4f8b\u8907\u88fd\u5230\u53e6\u4e00\u500b\u5be6\u4f8b\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u5099\u4efd\u548c\u8ca0\u8f09\u5747\u8861\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h2 id=\"9-%e4%ba%8b%e4%bb%b6%e8%aa%bf%e5%ba%a6%e5%99%a8-IRaWeiONMQ\">9. \u4e8b\u4ef6\u8abf\u5ea6\u5668<\/h2>\n<p>\u4e8b\u4ef6\u8abf\u5ea6\u5668\u5141\u8a31\u7528\u6236\u5b9a\u671f\u57f7\u884c\u7279\u5b9a\u7684SQL\u8a9e\u53e5\uff0c\u9019\u5c0d\u65bc\u81ea\u52d5\u5316\u7dad\u8b77\u4efb\u52d9\u975e\u5e38\u6709\u7528\u3002<\/p>\n<pre><code>CREATE EVENT daily_cleanup\nON SCHEDULE EVERY 1 DAY\nDO\nDELETE FROM logs WHERE created_at &lt; NOW() - INTERVAL 30 DAY;\n<\/code><\/pre>\n<h2 id=\"10-%e8%a7%92%e8%89%b2%e7%ae%a1%e7%90%86-IRaWeiONMQ\">10. \u89d2\u8272\u7ba1\u7406<\/h2>\n<p>MySQL\u652f\u6301\u89d2\u8272\u7ba1\u7406\uff0c\u9019\u4f7f\u5f97\u7528\u6236\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u7ba1\u7406\u6b0a\u9650\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u61c9\u7528\u4e2d\u3002<\/p>\n<pre><code>CREATE ROLE 'developer';\nGRANT SELECT, INSERT ON database.* TO 'developer';\n<\/code><\/pre>\n<h2 id=\"11-%e7%aa%97%e5%8f%a3%e5%87%bd%e6%95%b8-IRaWeiONMQ\">11. \u7a97\u53e3\u51fd\u6578<\/h2>\n<p>\u7a97\u53e3\u51fd\u6578\u5141\u8a31\u7528\u6236\u5728\u67e5\u8a62\u4e2d\u9032\u884c\u66f4\u8907\u96dc\u7684\u8a08\u7b97\uff0c\u4f8b\u5982\u7d2f\u8a08\u548c\u6392\u540d\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u5206\u6790\u975e\u5e38\u6709\u7528\u3002<\/p>\n<pre><code>SELECT id, amount, SUM(amount) OVER (ORDER BY id) AS running_total\nFROM sales;\n<\/code><\/pre>\n<h2 id=\"12-%e4%bc%ba%e6%9c%8d%e5%99%a8%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96-IRaWeiONMQ\">12. \u4f3a\u670d\u5668\u6027\u80fd\u512a\u5316<\/h2>\n<p>MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u6027\u80fd\u512a\u5316\u9078\u9805\uff0c\u4f8b\u5982\u67e5\u8a62\u7de9\u5b58\u548c\u7d22\u5f15\u512a\u5316\uff0c\u9019\u4e9b\u90fd\u80fd\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"13-%e5%ae%89%e5%85%a8%e6%80%a7%e5%8a%9f%e8%83%bd-IRaWeiONMQ\">13. \u5b89\u5168\u6027\u529f\u80fd<\/h2>\n<p>MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u5b89\u5168\u6027\u529f\u80fd\uff0c\u5305\u62ecSSL\u52a0\u5bc6\u548c\u6578\u64da\u52a0\u5bc6\uff0c\u9019\u5c0d\u65bc\u4fdd\u8b77\u654f\u611f\u6578\u64da\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"14-%e7%9b%a3%e6%8e%a7%e5%b7%a5%e5%85%b7-IRaWeiONMQ\">14. \u76e3\u63a7\u5de5\u5177<\/h2>\n<p>MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u76e3\u63a7\u5de5\u5177\uff0c\u5e6b\u52a9\u7528\u6236\u8ddf\u8e2a\u6578\u64da\u5eab\u6027\u80fd\u548c\u67e5\u8a62\u6548\u7387\uff0c\u9019\u5c0d\u65bc\u7dad\u8b77\u6578\u64da\u5eab\u7684\u5065\u5eb7\u72c0\u614b\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IRaWeiONMQ\">\u7e3d\u7d50<\/h2>\n<p>\u4ee5\u4e0a\u4ecb\u7d39\u768414\u500bMySQL\u5c0f\u73a9\u610f\uff0c\u4e0d\u50c5\u80fd\u63d0\u5347\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7ba1\u7406\u548c\u512a\u5316\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u865b\u64ec\u5217\u9084\u662f\u7a97\u53e3\u51fd\u6578\uff0c\u9019\u4e9b\u529f\u80fd\u90fd\u80fd\u8b93\u958b\u767c\u8005\u5728\u6578\u64da\u8655\u7406\u4e0a\u5982\u864e\u6dfb\u7ffc\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u904b\u884c\u60a8\u7684MySQL\u6578\u64da\u5eab\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u4e2d\u768414\u500b\u5c0f\u6280\u5de7\uff0c\u63d0\u5347\u4f60\u7684\u6578\u64da\u5eab\u7ba1\u7406\u6280\u80fd\uff0c\u8b93\u4f60\u7684\u5de5\u4f5c\u6548\u7387\u5927\u5e45\u63d0\u5347\uff0c\u4ee4\u4eba\u9a5a\u8277\uff01<\/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-80485","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80485","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=80485"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80485\/revisions"}],"predecessor-version":[{"id":80486,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80485\/revisions\/80486"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=80485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=80485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=80485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}