{"id":74648,"date":"2024-10-15T22:43:17","date_gmt":"2024-10-15T14:43:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/74648\/"},"modified":"2024-10-15T22:43:17","modified_gmt":"2024-10-15T14:43:17","slug":"mysql-order-by%e5%8e%9f%e7%90%86%e4%bb%a5%e5%8f%8a%e5%84%aa%e5%8c%96%ef%bc%9f%e9%80%99%e7%af%87%e4%be%86%e7%b5%a6%e4%bd%a0%e9%80%90%e6%ad%a5%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/74648\/","title":{"rendered":"MySQL ORDER BY\u539f\u7406\u4ee5\u53ca\u512a\u5316\uff1f\u9019\u7bc7\u4f86\u7d66\u4f60\u9010\u6b65\u89e3\u6790"},"content":{"rendered":"<h1 id=\"mysql-order-by%e5%8e%9f%e7%90%86%e4%bb%a5%e5%8f%8a%e5%84%aa%e5%8c%96%ef%bc%9f%e9%80%99%e7%af%87%e4%be%86%e7%b5%a6%e4%bd%a0%e9%80%90%e6%ad%a5%e8%a7%a3%e6%9e%90-BOxFcxJrmT\">MySQL ORDER BY\u539f\u7406\u4ee5\u53ca\u512a\u5316\uff1f\u9019\u7bc7\u4f86\u7d66\u4f60\u9010\u6b65\u89e3\u6790<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u9032\u884c\u6578\u64da\u67e5\u8a62\u6642\uff0c<code>ORDER BY<\/code>\u5b50\u53e5\u662f\u975e\u5e38\u91cd\u8981\u7684\u529f\u80fd\u4e4b\u4e00\u3002\u5b83\u5141\u8a31\u7528\u6236\u6839\u64da\u4e00\u500b\u6216\u591a\u500b\u5217\u7684\u503c\u5c0d\u67e5\u8a62\u7d50\u679c\u9032\u884c\u6392\u5e8f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e<code>ORDER BY<\/code>\u7684\u539f\u7406\u53ca\u5176\u512a\u5316\u65b9\u6cd5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u63d0\u9ad8\u6578\u64da\u67e5\u8a62\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"order-by%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-BOxFcxJrmT\">ORDER BY\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c<code>ORDER BY<\/code>\u5b50\u53e5\u901a\u5e38\u4f4d\u65bc<code>SELECT<\/code>\u8a9e\u53e5\u7684\u672b\u5c3e\uff0c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2 FROM table_name ORDER BY column1 [ASC|DESC];<\/code><\/pre>\n<p>\u9019\u88e1\uff0c<code>ASC<\/code>\u8868\u793a\u5347\u5e8f\uff08\u9ed8\u8a8d\uff09\uff0c\u800c<code>DESC<\/code>\u8868\u793a\u964d\u5e8f\u3002\u7576\u67e5\u8a62\u57f7\u884c\u6642\uff0cMySQL\u6703\u6839\u64da\u6307\u5b9a\u7684\u5217\u5c0d\u7d50\u679c\u96c6\u9032\u884c\u6392\u5e8f\u3002\u9019\u4e00\u904e\u7a0b\u6d89\u53ca\u5230\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u9996\u5148\uff0cMySQL\u6703\u5f9e\u6578\u64da\u8868\u4e2d\u6aa2\u7d22\u6240\u9700\u7684\u6578\u64da\u3002<\/li>\n<li>\u63a5\u8457\uff0c\u6839\u64da<code>ORDER BY<\/code>\u6307\u5b9a\u7684\u5217\u9032\u884c\u6392\u5e8f\u3002<\/li>\n<li>\u6700\u5f8c\uff0c\u8fd4\u56de\u6392\u5e8f\u5f8c\u7684\u7d50\u679c\u96c6\u3002<\/li>\n<\/ul>\n<h2 id=\"order-by%e7%9a%84%e6%80%a7%e8%83%bd%e5%bd%b1%e9%9f%bf-BOxFcxJrmT\">ORDER BY\u7684\u6027\u80fd\u5f71\u97ff<\/h2>\n<p>\u96d6\u7136<code>ORDER BY<\/code>\u529f\u80fd\u5f37\u5927\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u5c0d\u6027\u80fd\u9020\u6210\u5f71\u97ff\u3002\u6392\u5e8f\u64cd\u4f5c\u9700\u8981\u6d88\u8017\u984d\u5916\u7684\u5167\u5b58\u548cCPU\u8cc7\u6e90\uff0c\u7279\u5225\u662f\u5728\u6c92\u6709\u9069\u7576\u7d22\u5f15\u7684\u60c5\u6cc1\u4e0b\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u80fd\u5f71\u97ff\u6027\u80fd\u7684\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u91cf\uff1a<\/strong>\u7576\u6578\u64da\u91cf\u589e\u5927\u6642\uff0c\u6392\u5e8f\u6240\u9700\u7684\u6642\u9593\u548c\u8cc7\u6e90\u4e5f\u6703\u96a8\u4e4b\u589e\u52a0\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff1a<\/strong>\u5982\u679c\u6392\u5e8f\u7684\u5217\u6c92\u6709\u7d22\u5f15\uff0cMySQL\u5c07\u9700\u8981\u9032\u884c\u5168\u8868\u6383\u63cf\uff0c\u9019\u6703\u986f\u8457\u964d\u4f4e\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u8907\u96dc\u7684\u6392\u5e8f\u689d\u4ef6\uff1a<\/strong>\u4f7f\u7528\u591a\u500b\u5217\u9032\u884c\u6392\u5e8f\u6216\u4f7f\u7528\u8a08\u7b97\u5217\u9032\u884c\u6392\u5e8f\uff0c\u6703\u589e\u52a0\u67e5\u8a62\u7684\u8907\u96dc\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"order-by%e7%9a%84%e5%84%aa%e5%8c%96%e6%96%b9%e6%b3%95-BOxFcxJrmT\">ORDER BY\u7684\u512a\u5316\u65b9\u6cd5<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8<code>ORDER BY<\/code>\u7684\u6027\u80fd\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u512a\u5316\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-BOxFcxJrmT\">1. \u4f7f\u7528\u7d22\u5f15<\/h3>\n<p>\u70ba\u4e86\u63d0\u9ad8\u6392\u5e8f\u6027\u80fd\uff0c\u5efa\u8b70\u5728\u9700\u8981\u6392\u5e8f\u7684\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\u3002\u9019\u6a23\uff0cMySQL\u53ef\u4ee5\u5229\u7528\u7d22\u5f15\u4f86\u52a0\u901f\u6392\u5e8f\u904e\u7a0b\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE INDEX idx_column1 ON table_name(column1);<\/code><\/pre>\n<h3 id=\"2-%e9%99%90%e5%88%b6%e8%bf%94%e5%9b%9e%e7%9a%84%e8%a1%8c%e6%95%b8-BOxFcxJrmT\">2. \u9650\u5236\u8fd4\u56de\u7684\u884c\u6578<\/h3>\n<p>\u5982\u679c\u53ea\u9700\u8981\u8fd4\u56de\u90e8\u5206\u7d50\u679c\uff0c\u53ef\u4ee5\u4f7f\u7528<code>LIMIT<\/code>\u5b50\u53e5\u4f86\u9650\u5236\u8fd4\u56de\u7684\u884c\u6578\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6392\u5e8f\u7684\u6578\u64da\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT column1, column2 FROM table_name ORDER BY column1 LIMIT 10;<\/code><\/pre>\n<h3 id=\"3-%e9%81%bf%e5%85%8d%e4%bd%bf%e7%94%a8%e8%a8%88%e7%ae%97%e5%88%97-BOxFcxJrmT\">3. \u907f\u514d\u4f7f\u7528\u8a08\u7b97\u5217<\/h3>\n<p>\u5728<code>ORDER BY<\/code>\u4e2d\u4f7f\u7528\u8a08\u7b97\u5217\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u76e1\u91cf\u907f\u514d\u5728\u6392\u5e8f\u4e2d\u4f7f\u7528\u51fd\u6578\u6216\u8868\u9054\u5f0f\uff0c\u61c9\u76f4\u63a5\u4f7f\u7528\u5217\u540d\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e5%90%88%e9%81%a9%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-BOxFcxJrmT\">4. \u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u985e\u578b<\/h3>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u53ef\u4ee5\u63d0\u9ad8\u6392\u5e8f\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u6574\u6578\u985e\u578b\u7684\u6392\u5e8f\u901a\u5e38\u6bd4\u5b57\u7b26\u4e32\u985e\u578b\u7684\u6392\u5e8f\u66f4\u5feb\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-BOxFcxJrmT\">\u7d50\u8ad6<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c<code>ORDER BY<\/code>\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u9700\u8981\u6ce8\u610f\u5176\u6027\u80fd\u5f71\u97ff\u3002\u901a\u904e\u5408\u7406\u7684\u7d22\u5f15\u3001\u9650\u5236\u8fd4\u56de\u884c\u6578\u3001\u907f\u514d\u8a08\u7b97\u5217\u4ee5\u53ca\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u5e0c\u671b\u9019\u7bc7\u6587\u7ae0\u80fd\u5e6b\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3<code>ORDER BY<\/code>\u7684\u539f\u7406\u53ca\u5176\u512a\u5316\u65b9\u6cd5\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5c0d\u65bc<code>VPS<\/code>\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216\u5176\u4ed6\u76f8\u95dc\u4e3b\u984c\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u89e3\u6790MySQL\u7684ORDER BY\u539f\u7406\u53ca\u5176\u512a\u5316\u6280\u5de7\uff0c\u5e6b\u52a9\u4f60\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u5be6\u73fe\u66f4\u5feb\u7684\u6578\u64da\u6392\u5e8f\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-74648","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/74648","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=74648"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/74648\/revisions"}],"predecessor-version":[{"id":74649,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/74648\/revisions\/74649"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=74648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=74648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=74648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}