{"id":3710,"date":"2025-05-18T22:49:20","date_gmt":"2025-05-18T14:49:20","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3710"},"modified":"2025-05-18T22:49:20","modified_gmt":"2025-05-18T14:49:20","slug":"mysql-%e8%a7%a6%e5%8f%91%e5%99%a8%e6%95%b0%e9%87%8f%e9%99%90%e5%88%b6","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/05\/18\/mysql-%e8%a7%a6%e5%8f%91%e5%99%a8%e6%95%b0%e9%87%8f%e9%99%90%e5%88%b6\/","title":{"rendered":"MySQL \u89e6\u53d1\u5668\u6570\u91cf\u9650\u5236"},"content":{"rendered":"\n<p>\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u8868\u521b\u5efa\u591a\u4e2a\u89e6\u53d1\u5668\uff0c\u4f46\u5b58\u5728\u4e00\u4e9b\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. \u6bcf\u5f20\u8868\u7684\u89e6\u53d1\u5668\u9650\u5236<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6bcf\u79cd\u89e6\u53d1\u4e8b\u4ef6\u53ea\u80fd\u6709\u4e00\u4e2a\u89e6\u53d1\u5668<\/strong><br>MySQL \u5bf9\u540c\u4e00\u5f20\u8868\u7684\u540c\u4e00\u79cd\u89e6\u53d1\u4e8b\u4ef6\uff08\u5982 <code>BEFORE INSERT<\/code>\u3001<code>AFTER INSERT<\/code>\u3001<code>BEFORE UPDATE<\/code>\u3001<code>AFTER UPDATE<\/code>\u3001<code>BEFORE DELETE<\/code>\u3001<code>AFTER DELETE<\/code>\uff09<strong>\u53ea\u5141\u8bb8\u5b58\u5728\u4e00\u4e2a\u89e6\u53d1\u5668<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u89e6\u53d1\u5668\u7684\u7ec4\u5408\u9650\u5236<\/strong><br>\u6bcf\u5f20\u8868\u6700\u591a\u53ef\u4ee5\u6709 6 \u4e2a\u89e6\u53d1\u5668\uff0c\u5206\u522b\u662f\uff1a\n<ul class=\"wp-block-list\">\n<li><code>BEFORE INSERT<\/code><\/li>\n\n\n\n<li><code>AFTER INSERT<\/code><\/li>\n\n\n\n<li><code>BEFORE UPDATE<\/code><\/li>\n\n\n\n<li><code>AFTER UPDATE<\/code><\/li>\n\n\n\n<li><code>BEFORE DELETE<\/code><\/li>\n\n\n\n<li><code>AFTER DELETE<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. \u5168\u5c40\u89e6\u53d1\u5668\u6570\u91cf\u9650\u5236<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5168\u5c40\u6570\u91cf\u9650\u5236<\/strong><br>MySQL \u672c\u8eab\u6ca1\u6709\u5bf9\u6570\u636e\u5e93\u4e2d\u7684\u603b\u89e6\u53d1\u5668\u6570\u91cf\u8bbe\u7f6e\u786c\u6027\u9650\u5236\uff0c\u4f46\u8fc7\u591a\u7684\u89e6\u53d1\u5668\u4f1a\u589e\u52a0\u7cfb\u7edf\u8d1f\u62c5\uff0c\u5f71\u54cd\u6027\u80fd\u3002<\/li>\n\n\n\n<li><strong>\u7cfb\u7edf\u8d44\u6e90\u9650\u5236<\/strong><br>\u53d7\u9650\u4e8e\u670d\u52a1\u5668\u7684\u5185\u5b58\u3001CPU \u548c\u78c1\u76d8\u6027\u80fd\uff0c\u5982\u679c\u89e6\u53d1\u5668\u6267\u884c\u9891\u7e41\uff0c\u53ef\u80fd\u5bfc\u81f4\u8d44\u6e90\u8017\u5c3d\u3002<\/li>\n\n\n\n<li><strong>\u9012\u5f52\u6df1\u5ea6\u9650\u5236<\/strong><br>\u5982\u679c\u89e6\u53d1\u5668\u4e4b\u95f4\u5b58\u5728\u9012\u5f52\u8c03\u7528\uff0c\u53ef\u4ee5\u901a\u8fc7 <code>max_sp_recursion_depth<\/code> \u53c2\u6570\u63a7\u5236\u9012\u5f52\u6df1\u5ea6\uff0c\u9ed8\u8ba4\u503c\u4e3a 0\uff08\u7981\u6b62\u9012\u5f52\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>SHOW VARIABLES LIKE 'max_sp_recursion_depth';<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. \u5176\u4ed6\u9650\u5236<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e0d\u652f\u6301\u8de8\u5e93\u89e6\u53d1<\/strong><br>\u89e6\u53d1\u5668\u53ea\u80fd\u5728\u540c\u4e00\u4e2a\u6570\u636e\u5e93\u4e2d\u751f\u6548\uff0c\u4e0d\u80fd\u8de8\u5e93\u8bbf\u95ee\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u4e0d\u652f\u6301\u8c03\u7528\u5176\u4ed6\u89e6\u53d1\u5668<\/strong><br>\u89e6\u53d1\u5668\u5185\u90e8\u4e0d\u80fd\u76f4\u63a5\u8c03\u7528\u5176\u4ed6\u89e6\u53d1\u5668\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u5b58\u50a8\u8fc7\u7a0b\u95f4\u63a5\u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong>\u89e6\u53d1\u5668\u4e0e\u5916\u952e\u9650\u5236<\/strong><br>\u5982\u679c\u4f7f\u7528\u5916\u952e\u7ea6\u675f\uff0c\u89e6\u53d1\u5668\u7684\u6267\u884c\u987a\u5e8f\u53ef\u80fd\u4f1a\u53d7\u5230\u5f71\u54cd\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. \u67e5\u770b\u73b0\u6709\u89e6\u53d1\u5668<\/strong><\/h3>\n\n\n\n<p>\u8981\u67e5\u770b\u6570\u636e\u5e93\u4e2d\u5df2\u6709\u7684\u89e6\u53d1\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8bed\u53e5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>-- \u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u7684\u6240\u6709\u89e6\u53d1\u5668\nSHOW TRIGGERS;\n\n-- \u4ec5\u67e5\u770b\u6307\u5b9a\u8868\u7684\u89e6\u53d1\u5668\nSHOW TRIGGERS LIKE 'your_table_name';<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. \u4f18\u5316\u5efa\u8bae<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5c3d\u91cf\u51cf\u5c11\u5355\u8868\u4e0a\u7684\u89e6\u53d1\u5668\u6570\u91cf\uff0c\u907f\u514d\u590d\u6742\u7684\u903b\u8f91\u5d4c\u5957\u3002<\/li>\n\n\n\n<li>\u53ef\u4ee5\u5c06\u90e8\u5206\u4e1a\u52a1\u903b\u8f91\u79fb\u5230\u5e94\u7528\u5c42\u6216\u4f7f\u7528\u6d88\u606f\u961f\u5217\u5f02\u6b65\u5904\u7406\u3002<\/li>\n\n\n\n<li>\u901a\u8fc7\u5b58\u50a8\u8fc7\u7a0b\u6216\u51fd\u6570\u7b80\u5316\u89e6\u53d1\u5668\u903b\u8f91\uff0c\u51cf\u5c11\u8ba1\u7b97\u5f00\u9500\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u9700\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u8868\u521b\u5efa\u591a\u4e2a\u89e6\u53d1\u5668\uff0c\u4f46\u5b58\u5728\u4e00\u4e9b\u9650\u5236\u548c\u6ce8\u610f\u4e8b\u9879\uff1a 1. \u6bcf\u5f20\u8868\u7684\u89e6\u53d1\u5668\u9650\u5236 2. \u5168 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3711,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-3710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3710"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3710\/revisions"}],"predecessor-version":[{"id":3712,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3710\/revisions\/3712"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3711"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}