{"id":200009,"date":"2025-05-06T11:16:04","date_gmt":"2025-05-06T03:16:04","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200009\/"},"modified":"2025-05-06T11:16:04","modified_gmt":"2025-05-06T03:16:04","slug":"%e4%bd%bf%e7%94%a8%e5%89%8d%e7%bc%80%e7%b4%a2%e5%bc%95%e5%9c%a8mysql%e4%b8%ad%e7%9a%84%e4%bc%98%e7%82%b9%e5%92%8c%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200009\/","title":{"rendered":"\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u5728MySQL\u4e2d\u7684\u4f18\u70b9\u548c\u5e94\u7528"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u5728MySQL\u4e2d\u7684\u4f18\u70b9\u548c\u5e94\u7528<\/h1>\n<p>\u4eca\u5929\u4e3b\u673a\u5b9d\u8d1d\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~<\/p>\n<p>MySQL\u4e2d\u524d\u7f00\u7d22\u5f15\u7684\u4f18\u52bf\u548c\u7528\u6cd5<\/p>\n<p>\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0c\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u7684\u91cd\u8981\u624b\u6bb5\u4e4b\u4e00\u3002\u9664\u4e86\u5e38\u89c1\u7684\u5168\u5b57\u6bb5\u7d22\u5f15\u5916\uff0c\u8fd8\u6709\u4e00\u79cd\u7279\u6b8a\u7684\u7d22\u5f15\u53eb\u505a\u524d\u7f00\u7d22\u5f15\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u524d\u7f00\u7d22\u5f15\u7684\u4f18\u52bf\u548c\u7528\u6cd5\uff0c\u5e76\u9644\u4e0a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p><strong>1. \u4ec0\u4e48\u662f\u524d\u7f00\u7d22\u5f15<\/strong><\/p>\n<p>\u524d\u7f00\u7d22\u5f15\u5373\u53ea\u5bf9\u5b57\u6bb5\u7684\u524d\u51e0\u4e2a\u5b57\u7b26\u8fdb\u884c\u7d22\u5f15\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u5b57\u6bb5\u5185\u5bb9\u3002\u8fd9\u6837\u505a\u7684\u4f18\u52bf\u5728\u4e8e\u53ef\u4ee5\u8282\u7701\u7d22\u5f15\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u63d0\u9ad8\u7d22\u5f15\u7684\u521b\u5efa\u901f\u5ea6\uff0c\u5e76\u4e14\u5728\u4e00\u4e9b\u7279\u5b9a\u573a\u666f\u4e0b\u53ef\u4ee5\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n<p><strong>2. \u524d\u7f00\u7d22\u5f15\u7684\u4f18\u52bf<\/strong><\/p>\n<ul>\n<li><strong>\u8282\u7701\u5b58\u50a8\u7a7a\u95f4<\/strong>\uff1a\u76f8\u6bd4\u4e8e\u5168\u5b57\u6bb5\u7d22\u5f15\uff0c\u524d\u7f00\u7d22\u5f15\u53ea\u4fdd\u5b58\u5b57\u6bb5\u7684\u4e00\u90e8\u5206\u5185\u5bb9\uff0c\u6240\u4ee5\u5360\u7528\u7684\u5b58\u50a8\u7a7a\u95f4\u66f4\u5c0f\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u7d22\u5f15\u521b\u5efa\u901f\u5ea6<\/strong>\uff1a\u7531\u4e8e\u7d22\u5f15\u5927\u5c0f\u51cf\u5c0f\uff0c\u521b\u5efa\u7d22\u5f15\u7684\u901f\u5ea6\u4e5f\u76f8\u5e94\u63d0\u5347\u3002<\/li>\n<li><strong>\u4f18\u5316\u7279\u5b9a\u67e5\u8be2<\/strong>\uff1a\u5bf9\u4e8e\u67d0\u4e9b\u7279\u5b9a\u7c7b\u578b\u7684\u67e5\u8be2\uff0c\u524d\u7f00\u7d22\u5f15\u6709\u53ef\u80fd\u66f4\u9002\u5408\uff0c\u53ef\u4ee5\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n<p><strong>3. \u524d\u7f00\u7d22\u5f15\u7684\u7528\u6cd5<\/strong><\/p>\n<p>\u4e0b\u9762\u5c06\u901a\u8fc7\u4e00\u4e2a\u5177\u4f53\u7684\u8868\u683c\u548c\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u524d\u7f00\u7d22\u5f15\u7684\u7528\u6cd5\u3002<\/p>\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a\u540d\u4e3a<code>users<\/code>\u7684\u8868\u683c\uff0c\u5176\u4e2d\u5305\u542b<code>name<\/code>\u5b57\u6bb5\uff0c\u6211\u4eec\u5e0c\u671b\u4e3a<code>name<\/code>\u5b57\u6bb5\u521b\u5efa\u4e00\u4e2a\u524d\u7f00\u7d22\u5f15\u3002<\/p>\n<p>\u9996\u5148\uff0c\u521b\u5efa<code>users<\/code>\u8868\u683c\uff1a<\/p>\n<pre>CREATE TABLE users (\n    id INT PRIMARY KEY,\n    name VARCHAR(100)\n);<\/pre>\n<p>\u7136\u540e\uff0c\u4e3a<code>name<\/code>\u5b57\u6bb5\u521b\u5efa\u524d\u7f00\u7d22\u5f15\uff0c\u53ea\u5bf9\u524d5\u4e2a\u5b57\u7b26\u8fdb\u884c\u7d22\u5f15\uff1a<\/p>\n<pre>CREATE INDEX idx_name ON users (name(5));<\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u67e5\u8be2\u6765\u9a8c\u8bc1\u7d22\u5f15\u7684\u521b\u5efa\u60c5\u51b5\uff1a<\/p>\n<pre>EXPLAIN SELECT * FROM users WHERE name LIKE 'John%';<\/pre>\n<p>\u901a\u8fc7<code>EXPLAIN<\/code>\u5173\u952e\u5b57\u53ef\u4ee5\u67e5\u770b\u67e5\u8be2\u7684\u6267\u884c\u8ba1\u5212\uff0c\u786e\u4fdd\u524d\u7f00\u7d22\u5f15\u88ab\u6b63\u786e\u5e94\u7528\u3002<\/p>\n<p><strong>4. \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<p>\u5728\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u9009\u62e9\u5408\u9002\u7684\u524d\u7f00\u957f\u5ea6<\/strong>\uff1a\u524d\u7f00\u957f\u5ea6\u4e0d\u5b9c\u8fc7\u957f\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u573a\u666f\u548c\u6570\u636e\u5206\u5e03\u60c5\u51b5\u6765\u9009\u62e9\u5408\u9002\u7684\u957f\u5ea6\u3002<\/li>\n<li><strong>\u4e0d\u9002\u7528\u4e8e\u6240\u6709\u60c5\u51b5<\/strong>\uff1a\u524d\u7f00\u7d22\u5f15\u5e76\u4e0d\u9002\u7528\u4e8e\u6240\u6709\u60c5\u51b5\uff0c\u9700\u8981\u6839\u636e\u5b9e\u9645\u9700\u6c42\u548c\u67e5\u8be2\u7279\u70b9\u6765\u5224\u65ad\u662f\u5426\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p><strong>5. \u603b\u7ed3<\/strong><\/p>\n<p>\u524d\u7f00\u7d22\u5f15\u662fMySQL\u4e2d\u4e00\u79cd\u91cd\u8981\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u901a\u8fc7\u53ea\u5bf9\u5b57\u6bb5\u7684\u524d\u51e0\u4e2a\u5b57\u7b26\u8fdb\u884c\u7d22\u5f15\uff0c\u53ef\u4ee5\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\u3001\u63d0\u9ad8\u7d22\u5f15\u521b\u5efa\u901f\u5ea6\uff0c\u5e76\u5728\u7279\u5b9a\u573a\u666f\u4e0b\u4f18\u5316\u67e5\u8be2\u6027\u80fd\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u6765\u51b3\u5b9a\u662f\u5426\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\uff0c\u5e76\u6ce8\u610f\u9009\u62e9\u5408\u9002\u7684\u524d\u7f00\u957f\u5ea6\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8eMySQL\u4e2d\u524d\u7f00\u7d22\u5f15\u7684\u4f18\u52bf\u548c\u7528\u6cd5\u7684\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u8bfb\u8005\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u5728MySQL\u4e2d\u7684\u4f18\u70b9\u548c\u5e94\u7528\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u5728MySQL\u4e2d\u7684\u4f18\u70b9&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200009","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200009","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200009"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200009\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200009"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200009"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}