{"id":76444,"date":"2024-10-16T06:43:17","date_gmt":"2024-10-15T22:43:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76444\/"},"modified":"2024-10-16T06:43:17","modified_gmt":"2024-10-15T22:43:17","slug":"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%b5%90%e6%a7%8b%e8%88%87%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76444\/","title":{"rendered":"MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u7d50\u69cb\u8207\u7d22\u5f15\u7684\u512a\u5316\u65b9\u6848"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%b5%90%e6%a7%8b%e8%88%87%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%a1%88-nTmAAHoOQF\">MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u7d50\u69cb\u8207\u7d22\u5f15\u7684\u512a\u5316\u65b9\u6848<\/h1>\n<p>MySQL\u662f\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u4e86\u89e3MySQL\u7684\u57fa\u672c\u7d50\u69cb\u53ca\u5176\u7d22\u5f15\u7684\u512a\u5316\u65b9\u6848\uff0c\u5c0d\u65bc\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u7684\u57fa\u672c\u7d50\u69cb\u53ca\u5176\u7d22\u5f15\u7684\u512a\u5316\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"mysql%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%b5%90%e6%a7%8b-nTmAAHoOQF\">MySQL\u7684\u57fa\u672c\u7d50\u69cb<\/h2>\n<p>MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u7d50\u69cb\u4e3b\u8981\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5eab\uff08Database\uff09<\/strong>\uff1a\u6578\u64da\u5eab\u662f\u5b58\u5132\u6578\u64da\u7684\u5bb9\u5668\uff0c\u901a\u5e38\u5305\u542b\u591a\u500b\u8868\u3002<\/li>\n<li><strong>\u8868\uff08Table\uff09<\/strong>\uff1a\u8868\u662f\u6578\u64da\u7684\u57fa\u672c\u5b58\u5132\u55ae\u4f4d\uff0c\u7531\u884c\u548c\u5217\u7d44\u6210\u3002\u6bcf\u4e00\u884c\u4ee3\u8868\u4e00\u689d\u8a18\u9304\uff0c\u6bcf\u4e00\u5217\u4ee3\u8868\u4e00\u500b\u5b57\u6bb5\u3002<\/li>\n<li><strong>\u884c\uff08Row\uff09<\/strong>\uff1a\u884c\u662f\u8868\u4e2d\u7684\u4e00\u689d\u8a18\u9304\uff0c\u5305\u542b\u4e86\u6240\u6709\u5b57\u6bb5\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u5217\uff08Column\uff09<\/strong>\uff1a\u5217\u662f\u8868\u4e2d\u7684\u4e00\u500b\u5b57\u6bb5\uff0c\u5b9a\u7fa9\u4e86\u6578\u64da\u7684\u985e\u578b\u548c\u5c6c\u6027\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff08Index\uff09<\/strong>\uff1a\u7d22\u5f15\u662f\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u7684\u4e00\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u7684\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"mysql%e7%b4%a2%e5%bc%95%e7%9a%84%e9%a1%9e%e5%9e%8b-nTmAAHoOQF\">MySQL\u7d22\u5f15\u7684\u985e\u578b<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u7d22\u5f15\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u9375\u7d22\u5f15\uff08Primary Key Index\uff09<\/strong>\uff1a\u4e3b\u9375\u7d22\u5f15\u662f\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u6bcf\u4e00\u884c\u7684\u7d22\u5f15\uff0c\u4e0d\u80fd\u6709\u91cd\u8907\u503c\u3002<\/li>\n<li><strong>\u552f\u4e00\u7d22\u5f15\uff08Unique Index\uff09<\/strong>\uff1a\u552f\u4e00\u7d22\u5f15\u4fdd\u8b49\u7d22\u5f15\u5217\u7684\u503c\u552f\u4e00\uff0c\u4f46\u53ef\u4ee5\u6709NULL\u503c\u3002<\/li>\n<li><strong>\u666e\u901a\u7d22\u5f15\uff08Regular Index\uff09<\/strong>\uff1a\u666e\u901a\u7d22\u5f15\u4e0d\u9650\u5236\u503c\u7684\u552f\u4e00\u6027\uff0c\u4e3b\u8981\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u3002<\/li>\n<li><strong>\u5168\u6587\u7d22\u5f15\uff08Full-text Index\uff09<\/strong>\uff1a\u5168\u6587\u7d22\u5f15\u7528\u65bc\u5c0d\u6587\u672c\u9032\u884c\u641c\u7d22\uff0c\u9069\u5408\u65bc\u5927\u6587\u672c\u5b57\u6bb5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%a1%88-nTmAAHoOQF\">\u7d22\u5f15\u7684\u512a\u5316\u65b9\u6848<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8MySQL\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u7d22\u5f15\u7684\u512a\u5316\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6709\u6548\u7684\u7d22\u5f15\u512a\u5316\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e9%81%a9%e7%95%b6%e9%81%b8%e6%93%87%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-nTmAAHoOQF\">1. \u9069\u7576\u9078\u64c7\u7d22\u5f15\u985e\u578b<\/h3>\n<p>\u6839\u64da\u67e5\u8a62\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u9700\u8981\u5feb\u901f\u67e5\u8a62\u7684\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u666e\u901a\u7d22\u5f15\uff1b\u5c0d\u65bc\u9700\u8981\u552f\u4e00\u6027\u7d04\u675f\u7684\u5b57\u6bb5\uff0c\u5247\u61c9\u4f7f\u7528\u552f\u4e00\u7d22\u5f15\u3002<\/p>\n<h3 id=\"2-%e9%81%bf%e5%85%8d%e9%81%8e%e5%a4%9a%e7%9a%84%e7%b4%a2%e5%bc%95-nTmAAHoOQF\">2. \u907f\u514d\u904e\u591a\u7684\u7d22\u5f15<\/h3>\n<p>\u96d6\u7136\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u6578\u64da\u7684\u63d2\u5165\u548c\u66f4\u65b0\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u5408\u7406\u8a2d\u7f6e\u7d22\u5f15\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95-nTmAAHoOQF\">3. \u4f7f\u7528\u8907\u5408\u7d22\u5f15<\/h3>\n<p>\u5c0d\u65bc\u7d93\u5e38\u4e00\u8d77\u67e5\u8a62\u7684\u591a\u500b\u5b57\u6bb5\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u8907\u5408\u7d22\u5f15\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u67e5\u8a62\u6642\u7684\u7d22\u5f15\u6578\u91cf\uff0c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<pre><code>CREATE INDEX idx_name ON table_name (column1, column2);<\/code><\/pre>\n<h3 id=\"4-%e5%ae%9a%e6%9c%9f%e9%87%8d%e5%bb%ba%e7%b4%a2%e5%bc%95-nTmAAHoOQF\">4. \u5b9a\u671f\u91cd\u5efa\u7d22\u5f15<\/h3>\n<p>\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\u3002\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u5e6b\u52a9\u7dad\u6301\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<pre><code>OPTIMIZE TABLE table_name;<\/code><\/pre>\n<h3 id=\"5-%e4%bd%bf%e7%94%a8explain%e5%88%86%e6%9e%90%e6%9f%a5%e8%a9%a2-nTmAAHoOQF\">5. \u4f7f\u7528EXPLAIN\u5206\u6790\u67e5\u8a62<\/h3>\n<p>\u4f7f\u7528EXPLAIN\u8a9e\u53e5\u53ef\u4ee5\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5e6b\u52a9\u8b58\u5225\u6027\u80fd\u74f6\u9838\uff0c\u5f9e\u800c\u9032\u884c\u91dd\u5c0d\u6027\u7684\u512a\u5316\u3002<\/p>\n<pre><code>EXPLAIN SELECT * FROM table_name WHERE column1 = 'value';<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nTmAAHoOQF\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u7d50\u69cb\u548c\u7d22\u5f15\u7684\u512a\u5316\u65b9\u6848\u662f\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6e\u7d22\u5f15\u985e\u578b\u3001\u907f\u514d\u904e\u591a\u7d22\u5f15\u3001\u4f7f\u7528\u8907\u5408\u7d22\u5f15\u3001\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u4ee5\u53ca\u4f7f\u7528EXPLAIN\u5206\u6790\u67e5\u8a62\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u6aa2\u7d22\u7684\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u512a\u5316\u6280\u5de7\uff0c\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u548c\u904b\u7528MySQL\u6578\u64da\u5eab\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u7d50\u69cb\u53ca\u7d22\u5f15\u512a\u5316\u65b9\u6848\uff0c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6027\u80fd\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-76444","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76444","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=76444"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76444\/revisions"}],"predecessor-version":[{"id":76445,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76444\/revisions\/76445"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}