{"id":158451,"date":"2024-11-03T01:58:34","date_gmt":"2024-11-02T17:58:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158451\/"},"modified":"2024-11-03T01:58:35","modified_gmt":"2024-11-02T17:58:35","slug":"%e7%b5%a6%e6%95%b8%e6%93%9a%e6%b8%9b%e8%82%a5-%e8%ae%93-mysql-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%b7%91%e5%be%97%e6%9b%b4%e5%bf%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158451\/","title":{"rendered":"\u7d66\u6578\u64da\u6e1b\u80a5 \u8b93 MySQL \u6578\u64da\u5eab\u8dd1\u5f97\u66f4\u5feb"},"content":{"rendered":"<h1 id=\"%e7%b5%a6%e6%95%b8%e6%93%9a%e6%b8%9b%e8%82%a5-%e8%ae%93-mysql-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%b7%91%e5%be%97%e6%9b%b4%e5%bf%ab-nEYFVmWbwE\">\u7d66\u6578\u64da\u6e1b\u80a5 \u8b93 MySQL \u6578\u64da\u5eab\u8dd1\u5f97\u66f4\u5feb<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002MySQL \u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0cMySQL \u6578\u64da\u5eab\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u901a\u904e\u6578\u64da\u6e1b\u80a5\u4f86\u63d0\u5347 MySQL \u6578\u64da\u5eab\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e6%b8%9b%e8%82%a5%e7%9a%84%e6%a6%82%e5%bf%b5-nEYFVmWbwE\">\u6578\u64da\u6e1b\u80a5\u7684\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u6e1b\u80a5\u662f\u6307\u901a\u904e\u512a\u5316\u6578\u64da\u7d50\u69cb\u548c\u5167\u5bb9\u4f86\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u5927\u5c0f\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u548c\u6574\u9ad4\u6027\u80fd\u3002\u9019\u4e00\u904e\u7a0b\u5305\u62ec\u522a\u9664\u5197\u9918\u6578\u64da\u3001\u512a\u5316\u7d22\u5f15\u3001\u4ee5\u53ca\u5408\u7406\u8a2d\u8a08\u6578\u64da\u8868\u7b49\u3002<\/p>\n<h2 id=\"1-%e5%88%aa%e9%99%a4%e5%86%97%e9%a4%98%e6%95%b8%e6%93%9a-nEYFVmWbwE\">1. \u522a\u9664\u5197\u9918\u6578\u64da<\/h2>\n<p>\u5197\u9918\u6578\u64da\u4e0d\u50c5\u4f54\u7528\u5b58\u5132\u7a7a\u9593\uff0c\u9084\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u5b9a\u671f\u6aa2\u67e5\u548c\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6e05\u7406\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u522a\u9664\u904e\u671f\u6578\u64da\uff1a<\/strong>\u5c0d\u65bc\u4e0d\u518d\u9700\u8981\u7684\u6b77\u53f2\u6578\u64da\uff0c\u53ef\u4ee5\u8003\u616e\u5b9a\u671f\u522a\u9664\u3002<\/li>\n<li><strong>\u5408\u4f75\u91cd\u8907\u6578\u64da\uff1a<\/strong>\u4f7f\u7528 SQL \u67e5\u8a62\u627e\u51fa\u91cd\u8907\u7684\u8a18\u9304\uff0c\u4e26\u9032\u884c\u5408\u4f75\u3002<\/li>\n<\/ul>\n<pre><code>DELETE FROM table_name WHERE condition;<\/code><\/pre>\n<h2 id=\"2-%e5%84%aa%e5%8c%96%e7%b4%a2%e5%bc%95-nEYFVmWbwE\">2. \u512a\u5316\u7d22\u5f15<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\uff0c\u4f46\u904e\u591a\u6216\u4e0d\u7576\u7684\u7d22\u5f15\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u7d22\u5f15\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u671f\u6aa2\u67e5\u7d22\u5f15\uff1a<\/strong>\u4f7f\u7528 <code>SHOW INDEX FROM table_name;<\/code> \u67e5\u8a62\u8868\u7684\u7d22\u5f15\u60c5\u6cc1\uff0c\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\uff1a<\/strong>\u6839\u64da\u67e5\u8a62\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\uff0c\u5982 B-tree \u6216 Hash \u7d22\u5f15\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e5%90%88%e7%90%86%e8%a8%ad%e8%a8%88%e6%95%b8%e6%93%9a%e8%a1%a8-nEYFVmWbwE\">3. \u5408\u7406\u8a2d\u8a08\u6578\u64da\u8868<\/h2>\n<p>\u6578\u64da\u8868\u7684\u8a2d\u8a08\u5c0d\u65bc\u6578\u64da\u5eab\u6027\u80fd\u6709\u8457\u76f4\u63a5\u5f71\u97ff\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u8a2d\u8a08\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff1a<\/strong>\u9078\u64c7\u6700\u5c0f\u7684\u6578\u64da\u985e\u578b\u4ee5\u7bc0\u7701\u7a7a\u9593\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u5e74\u9f61\u9019\u985e\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 TINYINT \u800c\u4e0d\u662f INT\u3002<\/li>\n<li><strong>\u907f\u514d\u4f7f\u7528 NULL \u503c\uff1a<\/strong>\u5728\u8a2d\u8a08\u8868\u6642\uff0c\u76e1\u91cf\u907f\u514d\u4f7f\u7528 NULL \u503c\uff0c\u56e0\u70ba\u9019\u6703\u589e\u52a0\u5b58\u5132\u9700\u6c42\u3002<\/li>\n<\/ul>\n<pre><code>CREATE TABLE example (\n    id INT NOT NULL AUTO_INCREMENT,\n    name VARCHAR(100) NOT NULL,\n    age TINYINT,\n    PRIMARY KEY (id)\n);<\/code><\/pre>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e5%88%86%e5%8d%80%e6%8a%80%e8%a1%93-nEYFVmWbwE\">4. \u4f7f\u7528\u5206\u5340\u6280\u8853<\/h2>\n<p>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u8868\uff0c\u4f7f\u7528\u5206\u5340\u6280\u8853\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u5206\u5340\u53ef\u4ee5\u5c07\u6578\u64da\u5206\u6563\u5230\u4e0d\u540c\u7684\u7269\u7406\u5340\u57df\uff0c\u5f9e\u800c\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002MySQL \u652f\u6301\u591a\u7a2e\u5206\u5340\u65b9\u5f0f\uff0c\u5982 RANGE\u3001LIST \u548c HASH \u5206\u5340\u3002<\/p>\n<pre><code>CREATE TABLE example (\n    id INT,\n    name VARCHAR(100),\n    PRIMARY KEY (id, name)\n) PARTITION BY RANGE (id) (\n    PARTITION p0 VALUES LESS THAN (1000),\n    PARTITION p1 VALUES LESS THAN (2000)\n);<\/code><\/pre>\n<h2 id=\"5-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ba%ab-nEYFVmWbwE\">5. \u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab<\/h2>\n<p>\u5b9a\u671f\u7dad\u8b77\u662f\u4fdd\u6301 MySQL \u6578\u64da\u5eab\u6027\u80fd\u7684\u95dc\u9375\u3002\u9019\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u57f7\u884c OPTIMIZE TABLE\uff1a<\/strong>\u9019\u500b\u547d\u4ee4\u53ef\u4ee5\u91cd\u5efa\u8868\u4e26\u56de\u6536\u7a7a\u9593\u3002<\/li>\n<li><strong>\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff1a<\/strong>\u4f7f\u7528 <code>ANALYZE TABLE<\/code> \u66f4\u65b0\u8868\u7684\u7d71\u8a08\u4fe1\u606f\uff0c\u4ee5\u5e6b\u52a9\u67e5\u8a62\u512a\u5316\u5668\u505a\u51fa\u66f4\u597d\u7684\u6c7a\u7b56\u3002<\/li>\n<\/ul>\n<pre><code>OPTIMIZE TABLE table_name;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nEYFVmWbwE\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11 MySQL \u6578\u64da\u5eab\u7684\u6578\u64da\u91cf\uff0c\u5f9e\u800c\u63d0\u5347\u5176\u6027\u80fd\u3002\u5b9a\u671f\u6e05\u7406\u5197\u9918\u6578\u64da\u3001\u512a\u5316\u7d22\u5f15\u3001\u5408\u7406\u8a2d\u8a08\u6578\u64da\u8868\u3001\u4f7f\u7528\u5206\u5340\u6280\u8853\u4ee5\u53ca\u5b9a\u671f\u7dad\u8b77\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u6b65\u9a5f\u3002\u9019\u4e9b\u63aa\u65bd\u4e0d\u50c5\u80fd\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\uff0c\u9084\u80fd\u964d\u4f4e\u5b58\u5132\u6210\u672c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\uff0c\u63d0\u5347\u696d\u52d9\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u901a\u904e\u6578\u64da\u6e1b\u80a5\u6280\u8853\u512a\u5316 MySQL \u6578\u64da\u5eab\u6027\u80fd\uff0c\u63d0\u5347\u67e5\u8a62\u901f\u5ea6\uff0c\u5be6\u73fe\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\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-158451","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158451","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=158451"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158451\/revisions"}],"predecessor-version":[{"id":158452,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158451\/revisions\/158452"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}