{"id":182988,"date":"2024-11-10T01:00:21","date_gmt":"2024-11-09T17:00:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182988\/"},"modified":"2024-11-10T01:00:22","modified_gmt":"2024-11-09T17:00:22","slug":"%e5%af%a6%e7%8f%bemysql%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%ad%a5%e9%a9%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182988\/","title":{"rendered":"\u5be6\u73feMySQL\u89f8\u767c\u5668\u7684\u5be6\u969b\u64cd\u4f5c\u6b65\u9a5f"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%bemysql%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%ad%a5%e9%a9%9f-sxnIyxTQQE\">\u5be6\u73feMySQL\u89f8\u767c\u5668\u7684\u5be6\u969b\u64cd\u4f5c\u6b65\u9a5f<\/h1>\n<p>MySQL\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u80fd\u5920\u5728\u7279\u5b9a\u4e8b\u4ef6\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u4e00\u6bb5\u9810\u5b9a\u7fa9\u7684SQL\u8a9e\u53e5\u3002\u9019\u4e9b\u4e8b\u4ef6\u901a\u5e38\u5305\u62ec\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u64cd\u4f5c\u3002\u89f8\u767c\u5668\u7684\u4f7f\u7528\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u81ea\u52d5\u5316\u6578\u64da\u8655\u7406\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728MySQL\u4e2d\u5be6\u73fe\u89f8\u767c\u5668\u7684\u5177\u9ad4\u64cd\u4f5c\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"1-%e4%ba%86%e8%a7%a3%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-sxnIyxTQQE\">1. \u4e86\u89e3\u89f8\u767c\u5668\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u89f8\u767c\u5668\u662f\u8207\u8868\u76f8\u95dc\u806f\u7684\uff0c\u4e26\u4e14\u5728\u7279\u5b9a\u7684\u6578\u64da\u64cd\u4f5c\uff08\u5982INSERT\u3001UPDATE\u6216DELETE\uff09\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002\u89f8\u767c\u5668\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>BEFORE\u89f8\u767c\u5668\uff1a<\/strong>\u5728\u57f7\u884cINSERT\u3001UPDATE\u6216DELETE\u64cd\u4f5c\u4e4b\u524d\u89f8\u767c\u3002<\/li>\n<li><strong>AFTER\u89f8\u767c\u5668\uff1a<\/strong>\u5728\u57f7\u884cINSERT\u3001UPDATE\u6216DELETE\u64cd\u4f5c\u4e4b\u5f8c\u89f8\u767c\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%89%b5%e5%bb%ba%e8%a7%b8%e7%99%bc%e5%99%a8%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-sxnIyxTQQE\">2. \u5275\u5efa\u89f8\u767c\u5668\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5275\u5efa\u89f8\u767c\u5668\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TRIGGER \u89f8\u767c\u5668\u540d\u7a31\n    {BEFORE | AFTER} {INSERT | UPDATE | DELETE}\n    ON \u8868\u540d\u7a31\n    FOR EACH ROW\n    BEGIN\n        -- SQL\u8a9e\u53e5\n    END;<\/code><\/pre>\n<h2 id=\"3-%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%ad%a5%e9%a9%9f-sxnIyxTQQE\">3. \u5be6\u969b\u64cd\u4f5c\u6b65\u9a5f<\/h2>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%80%ef%bc%9a%e9%80%a3%e6%8e%a5%e5%88%b0mysql%e6%95%b8%e6%93%9a%e5%ba%ab-sxnIyxTQQE\">\u6b65\u9a5f\u4e00\uff1a\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u4f7f\u7528MySQL\u5ba2\u6236\u7aef\u6216\u5176\u4ed6\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\u9023\u63a5\u5230\u60a8\u7684MySQL\u6578\u64da\u5eab\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%ba%8c%ef%bc%9a%e5%89%b5%e5%bb%ba%e7%a4%ba%e4%be%8b%e8%a1%a8-sxnIyxTQQE\">\u6b65\u9a5f\u4e8c\uff1a\u5275\u5efa\u793a\u4f8b\u8868<\/h3>\n<p>\u5728\u5275\u5efa\u89f8\u767c\u5668\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u6709\u4e00\u500b\u8868\u4f86\u9032\u884c\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cemployees\u201d\u7684\u8868\uff1a<\/p>\n<pre><code>CREATE TABLE employees (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    name VARCHAR(100),\n    salary DECIMAL(10, 2)\n);<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%89%ef%bc%9a%e5%89%b5%e5%bb%ba%e8%a7%b8%e7%99%bc%e5%99%a8-sxnIyxTQQE\">\u6b65\u9a5f\u4e09\uff1a\u5275\u5efa\u89f8\u767c\u5668<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u5275\u5efa\u4e00\u500b\u89f8\u767c\u5668\uff0c\u7576\u6709\u65b0\u54e1\u5de5\u88ab\u63d2\u5165\u6642\uff0c\u81ea\u52d5\u8a18\u9304\u5176\u4fe1\u606f\u5230\u53e6\u4e00\u500b\u8868\u4e2d\u3002\u9996\u5148\uff0c\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cemployee_log\u201d\u7684\u8868\uff1a<\/p>\n<pre><code>CREATE TABLE employee_log (\n    log_id INT AUTO_INCREMENT PRIMARY KEY,\n    employee_name VARCHAR(100),\n    log_time DATETIME\n);<\/code><\/pre>\n<p>\u7136\u5f8c\uff0c\u5275\u5efa\u89f8\u767c\u5668\uff1a<\/p>\n<pre><code>CREATE TRIGGER after_employee_insert\n    AFTER INSERT\n    ON employees\n    FOR EACH ROW\n    BEGIN\n        INSERT INTO employee_log (employee_name, log_time)\n        VALUES (NEW.name, NOW());\n    END;<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e5%9b%9b%ef%bc%9a%e6%b8%ac%e8%a9%a6%e8%a7%b8%e7%99%bc%e5%99%a8-sxnIyxTQQE\">\u6b65\u9a5f\u56db\uff1a\u6e2c\u8a66\u89f8\u767c\u5668<\/h3>\n<p>\u73fe\u5728\uff0c\u60a8\u53ef\u4ee5\u5411\u201cemployees\u201d\u8868\u4e2d\u63d2\u5165\u4e00\u689d\u8a18\u9304\uff0c\u4e26\u6aa2\u67e5\u201cemployee_log\u201d\u8868\u4ee5\u78ba\u8a8d\u89f8\u767c\u5668\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\uff1a<\/p>\n<pre><code>INSERT INTO employees (name, salary) VALUES ('John Doe', 50000);<\/code><\/pre>\n<p>\u7136\u5f8c\u67e5\u8a62\u201cemployee_log\u201d\u8868\uff1a<\/p>\n<pre><code>SELECT * FROM employee_log;<\/code><\/pre>\n<p>\u60a8\u61c9\u8a72\u80fd\u5920\u770b\u5230\u65b0\u63d2\u5165\u7684\u54e1\u5de5\u4fe1\u606f\u5df2\u7d93\u88ab\u8a18\u9304\u4e0b\u4f86\u3002<\/p>\n<h2 id=\"4-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-sxnIyxTQQE\">4. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u89f8\u767c\u5668\u6642\uff0c\u9700\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u89f8\u767c\u5668\u7684\u57f7\u884c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9ad8\u983b\u7387\u7684\u6578\u64da\u64cd\u4f5c\u4e2d\u3002<\/li>\n<li>\u907f\u514d\u5728\u89f8\u767c\u5668\u4e2d\u57f7\u884c\u904e\u65bc\u8907\u96dc\u7684\u908f\u8f2f\uff0c\u4ee5\u514d\u5c0e\u81f4\u610f\u5916\u7684\u884c\u70ba\u3002<\/li>\n<li>\u78ba\u4fdd\u89f8\u767c\u5668\u7684\u908f\u8f2f\u4e0d\u6703\u5c0e\u81f4\u7121\u9650\u5faa\u74b0\uff0c\u4f8b\u5982\u5728\u89f8\u767c\u5668\u5167\u90e8\u518d\u6b21\u57f7\u884c\u6703\u89f8\u767c\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-sxnIyxTQQE\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u89f8\u767c\u5668\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u81ea\u52d5\u5316\u6578\u64da\u8655\u7406\u548c\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\u3002\u901a\u904e\u672c\u6587\u4ecb\u7d39\u7684\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5275\u5efa\u548c\u6e2c\u8a66\u89f8\u767c\u5668\uff0c\u5f9e\u800c\u63d0\u5347\u6578\u64da\u5eab\u7684\u529f\u80fd\u6027\u548c\u6548\u7387\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u670d\u52d9\u4f86\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8b93\u60a8\u7684\u696d\u52d9\u904b\u884c\u66f4\u52a0\u9806\u66a2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5be6\u73feMySQL\u89f8\u767c\u5668\u7684\u5be6\u969b\u64cd\u4f5c\u6b65\u9a5f\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u8655\u7406\u6d41\u7a0b\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-182988","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182988","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=182988"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182988\/revisions"}],"predecessor-version":[{"id":182989,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182988\/revisions\/182989"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=182988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=182988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=182988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}