{"id":3716,"date":"2025-05-18T22:54:03","date_gmt":"2025-05-18T14:54:03","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3716"},"modified":"2025-05-18T22:54:03","modified_gmt":"2025-05-18T14:54:03","slug":"mysql-%e8%a7%86%e5%9b%be%e5%af%b9%e6%80%a7%e8%83%bd%e7%9a%84%e5%bd%b1%e5%93%8d","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/05\/18\/mysql-%e8%a7%86%e5%9b%be%e5%af%b9%e6%80%a7%e8%83%bd%e7%9a%84%e5%bd%b1%e5%93%8d\/","title":{"rendered":"MySQL \u89c6\u56fe\u5bf9\u6027\u80fd\u7684\u5f71\u54cd"},"content":{"rendered":"\n<p>\u5728 MySQL \u4e2d\u4f7f\u7528\u89c6\u56fe <strong>\u4e0d\u4e00\u5b9a<\/strong>\u4f1a\u63d0\u9ad8\u6027\u80fd\uff0c\u5177\u4f53\u6548\u679c\u53d6\u51b3\u4e8e\u89c6\u56fe\u7684\u8bbe\u8ba1\u548c\u4f7f\u7528\u573a\u666f\u3002\u89c6\u56fe\u4e3b\u8981\u7528\u4e8e\u7b80\u5316\u67e5\u8be2\u548c\u903b\u8f91\u5c01\u88c5\uff0c\u4f46\u5e76\u4e0d\u603b\u662f\u5bf9\u6027\u80fd\u6709\u6b63\u9762\u5f71\u54cd\u3002<\/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. \u89c6\u56fe\u7684\u6027\u80fd\u4f18\u52bf<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7b80\u5316\u590d\u6742\u67e5\u8be2<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u53ef\u4ee5\u5c06\u590d\u6742\u7684 SQL \u67e5\u8be2\u5c01\u88c5\u5728\u4e00\u8d77\uff0c\u51cf\u5c11\u5e94\u7528\u5c42\u7684\u91cd\u590d\u4ee3\u7801\uff0c\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u903b\u8f91\u91cd\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u53ef\u4ee5\u4f5c\u4e3a\u9884\u5b9a\u4e49\u7684\u67e5\u8be2\u6a21\u677f\uff0c\u4fbf\u4e8e\u4ee3\u7801\u91cd\u7528\u548c\u7ef4\u62a4\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6570\u636e\u5b89\u5168\u6027<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u4ee5\u4f7f\u7528\u89c6\u56fe\u9650\u5236\u7528\u6237\u8bbf\u95ee\u7684\u5217\u548c\u884c\uff0c\u589e\u5f3a\u6570\u636e\u5b89\u5168\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u964d\u4f4e I\/O \u5f00\u9500\uff08\u67d0\u4e9b\u573a\u666f\uff09<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u89c6\u56fe\u5305\u542b\u7b80\u5355\u7684 SELECT \u67e5\u8be2\uff0cMySQL \u53ef\u4ee5\u4f18\u5316\u67e5\u8be2\u8ba1\u5212\uff0c\u51cf\u5c11 I\/O \u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4e00\u81f4\u6027<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u53ef\u4ee5\u786e\u4fdd\u4e0d\u540c\u7528\u6237\u5728\u8bbf\u95ee\u6570\u636e\u65f6\u770b\u5230\u7684\u4e00\u81f4\u6027\u3002<\/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. \u89c6\u56fe\u7684\u6027\u80fd\u52a3\u52bf<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7f3a\u4e4f\u7d22\u5f15<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u672c\u8eab\u5e76\u4e0d\u4f1a\u5b58\u50a8\u6570\u636e\uff0c\u4e5f\u6ca1\u6709\u72ec\u7acb\u7684\u7d22\u5f15\u3002\u590d\u6742\u7684\u89c6\u56fe\u53ef\u80fd\u5bfc\u81f4\u5927\u91cf\u7684\u8868\u626b\u63cf\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4e0d\u80fd\u7f13\u5b58<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u89c6\u56fe\u4e0d\u4f1a\u50cf\u7269\u5316\u89c6\u56fe\u90a3\u6837\u7f13\u5b58\u6570\u636e\uff0c\u6bcf\u6b21\u8bbf\u95ee\u90fd\u9700\u8981\u5b9e\u65f6\u8ba1\u7b97\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u9012\u5f52\u89c6\u56fe\u6027\u80fd\u5dee<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u89c6\u56fe\u5d4c\u5957\u8c03\u7528\uff0c\u67e5\u8be2\u6027\u80fd\u4f1a\u663e\u8457\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u989d\u5916\u5f00\u9500<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6bcf\u6b21\u67e5\u8be2\u89c6\u56fe\u65f6\uff0cMySQL \u90fd\u9700\u8981\u89e3\u6790\u89c6\u56fe\u5b9a\u4e49\u5e76\u751f\u6210\u67e5\u8be2\u8ba1\u5212\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u67e5\u8be2\u4f18\u5316\u53d7\u9650<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u67d0\u4e9b\u4f18\u5316\uff08\u5982 <code>LIMIT<\/code>\u3001<code>ORDER BY<\/code>\uff09\u5728\u89c6\u56fe\u4e2d\u6548\u679c\u4e0d\u4f73\uff0c\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u7684\u5168\u8868\u626b\u63cf\u3002<\/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>3. \u6027\u80fd\u6d4b\u8bd5\u793a\u4f8b<\/strong><\/h3>\n\n\n\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a\u5305\u542b\u767e\u4e07\u7ea7\u6570\u636e\u7684\u8ba2\u5355\u8868 <code>orders<\/code>\uff1a<\/p>\n\n\n\n<p><strong>\u521b\u5efa\u57fa\u672c\u8ba2\u5355\u8868<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE orders (\n    order_id INT AUTO_INCREMENT PRIMARY KEY,\n    customer_id INT,\n    order_date DATE,\n    amount DECIMAL(10, 2),\n    status VARCHAR(20),\n    INDEX (customer_id),\n    INDEX (order_date)\n);<\/code><\/pre>\n\n\n\n<p><strong>\u63d2\u5165\u6d4b\u8bd5\u6570\u636e<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>INSERT INTO orders (customer_id, order_date, amount, status) \nSELECT FLOOR(RAND() * 1000), \n       DATE_SUB(CURDATE(), INTERVAL FLOOR(RAND() * 365) DAY), \n       ROUND(RAND() * 1000, 2), \n       'COMPLETED'\nFROM information_schema.columns\nLIMIT 1000000;<\/code><\/pre>\n\n\n\n<p><strong>\u521b\u5efa\u89c6\u56fe<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE VIEW completed_orders AS\nSELECT order_id, customer_id, order_date, amount \nFROM orders \nWHERE status = 'COMPLETED';<\/code><\/pre>\n\n\n\n<p><strong>\u67e5\u8be2\u89c6\u56fe<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT * FROM completed_orders WHERE order_date &gt; '2024-01-01';<\/code><\/pre>\n\n\n\n<p><strong>\u76f4\u63a5\u67e5\u8be2\u8868<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT order_id, customer_id, order_date, amount \nFROM orders \nWHERE status = 'COMPLETED' AND order_date &gt; '2024-01-01';<\/code><\/pre>\n\n\n\n<p><strong>\u6d4b\u8bd5\u7ed3\u679c<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u89c6\u56fe<\/strong>\uff1a\u7531\u4e8e MySQL \u9700\u8981\u5728\u89c6\u56fe\u5b9a\u4e49\u7684\u57fa\u7840\u4e0a\u518d\u8fdb\u884c <code>WHERE<\/code> \u6761\u4ef6\u8fc7\u6ee4\uff0c\u67e5\u8be2\u8ba1\u5212\u53ef\u80fd\u66f4\u590d\u6742\u3002<\/li>\n\n\n\n<li><strong>\u76f4\u63a5\u8868\u67e5\u8be2<\/strong>\uff1aMySQL \u53ef\u4ee5\u76f4\u63a5\u4f18\u5316\u67e5\u8be2\u8def\u5f84\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u5f00\u9500\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. \u4f18\u5316\u89c6\u56fe\u6027\u80fd\u7684\u7b56\u7565<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4f7f\u7528\u7d22\u5f15<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u786e\u4fdd\u89c6\u56fe\u5f15\u7528\u7684\u57fa\u7840\u8868\u5177\u6709\u5408\u9002\u7684\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u907f\u514d\u590d\u6742\u5d4c\u5957<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c3d\u91cf\u51cf\u5c11\u89c6\u56fe\u7684\u5d4c\u5957\u5c42\u7ea7\uff0c\u907f\u514d\u9012\u5f52\u67e5\u8be2\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u907f\u514d\u8fc7\u591a\u805a\u5408<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u89c6\u56fe\u5305\u542b\u5927\u91cf\u805a\u5408\u64cd\u4f5c\uff0c\u53ef\u80fd\u5bfc\u81f4\u8f83\u9ad8\u7684 CPU \u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5206\u533a\u8868\u4f18\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u89c6\u56fe\u67e5\u8be2\u9891\u7e41\u8bbf\u95ee\u5386\u53f2\u6570\u636e\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u5206\u533a\u8868\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b9a\u671f\u91cd\u6784<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u671f\u68c0\u67e5\u89c6\u56fe\u7684\u6267\u884c\u8ba1\u5212\uff0c\u786e\u4fdd\u67e5\u8be2\u6548\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u89c6\u56fe\u66ff\u6362<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u4e8e\u9ad8\u9891\u8bbf\u95ee\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528<strong>\u7269\u5316\u89c6\u56fe<\/strong>\uff08\u9700\u8981\u989d\u5916\u7684\u903b\u8f91\u5b9e\u73b0\uff09\uff0c\u51cf\u5c11\u5b9e\u65f6\u8ba1\u7b97\u538b\u529b\u3002<\/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>5. \u603b\u7ed3<\/strong><\/h3>\n\n\n\n<p>\u89c6\u56fe\u4e3b\u8981\u7528\u4e8e<strong>\u7b80\u5316\u67e5\u8be2\u903b\u8f91<\/strong>\u548c<strong>\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027<\/strong>\uff0c\u5e76\u4e0d\u603b\u662f\u80fd\u63d0\u5347\u6027\u80fd\u3002\u5982\u679c\u89c6\u56fe\u5b9a\u4e49\u4e0d\u5f53\uff0c\u53cd\u800c\u53ef\u80fd\u964d\u4f4e\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u5728\u51b3\u5b9a\u4f7f\u7528\u89c6\u56fe\u65f6\uff0c\u9700\u8981\u5145\u5206\u8bc4\u4f30\u67e5\u8be2\u7684\u590d\u6742\u5ea6\u3001\u6570\u636e\u91cf\u548c\u8bbf\u95ee\u9891\u7387\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\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\u4f7f\u7528\u89c6\u56fe \u4e0d\u4e00\u5b9a\u4f1a\u63d0\u9ad8\u6027\u80fd\uff0c\u5177\u4f53\u6548\u679c\u53d6\u51b3\u4e8e\u89c6\u56fe\u7684\u8bbe\u8ba1\u548c\u4f7f\u7528\u573a\u666f\u3002\u89c6\u56fe\u4e3b\u8981\u7528\u4e8e\u7b80\u5316\u67e5\u8be2\u548c\u903b\u8f91\u5c01 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3717,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-3716","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\/3716","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=3716"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3716\/revisions"}],"predecessor-version":[{"id":3718,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3716\/revisions\/3718"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3717"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}