{"id":143779,"date":"2024-11-01T01:10:55","date_gmt":"2024-10-31T17:10:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/143779\/"},"modified":"2024-11-01T01:10:56","modified_gmt":"2024-10-31T17:10:56","slug":"sql-%e7%9a%84-order-by-%e8%aa%9e%e5%8f%a5%e7%9a%84%e8%a9%b3%e7%b4%b0%e4%bb%8b%e7%b4%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/143779\/","title":{"rendered":"SQL \u7684 Order By \u8a9e\u53e5\u7684\u8a73\u7d30\u4ecb\u7d39"},"content":{"rendered":"<h1 id=\"sql-%e7%9a%84-order-by-%e8%aa%9e%e5%8f%a5%e7%9a%84%e8%a9%b3%e7%b4%b0%e4%bb%8b%e7%b4%b9-jcijrYKGLS\">SQL \u7684 Order By \u8a9e\u53e5\u7684\u8a73\u7d30\u4ecb\u7d39<\/h1>\n<p>\u5728 SQL \u4e2d\uff0c<code>ORDER BY<\/code> \u8a9e\u53e5\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u6839\u64da\u4e00\u500b\u6216\u591a\u500b\u5217\u7684\u503c\u5c0d\u67e5\u8a62\u7d50\u679c\u9032\u884c\u6392\u5e8f\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u5e6b\u52a9\u7528\u6236\u66f4\u5feb\u5730\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39 <code>ORDER BY<\/code> \u8a9e\u53e5\u7684\u7528\u6cd5\u3001\u8a9e\u6cd5\u3001\u4ee5\u53ca\u4e00\u4e9b\u5be6\u969b\u7684\u4f8b\u5b50\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-jcijrYKGLS\">\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u4f7f\u7528 <code>ORDER BY<\/code> \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2, ...\nFROM table_name\nORDER BY column1 [ASC|DESC], column2 [ASC|DESC], ...;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>column1, column2, ...<\/code> \u662f\u8981\u67e5\u8a62\u7684\u5217\u540d\uff0c<code>table_name<\/code> \u662f\u6578\u64da\u8868\u7684\u540d\u7a31\u3002\u6392\u5e8f\u7684\u65b9\u5411\u53ef\u4ee5\u662f\uff1a<\/p>\n<ul>\n<li><code>ASC<\/code>\uff1a\u5347\u5e8f\uff08\u9ed8\u8a8d\uff09<\/li>\n<li><code>DESC<\/code>\uff1a\u964d\u5e8f<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-jcijrYKGLS\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528 <code>ORDER BY<\/code> \u8a9e\u53e5\u7684\u7bc4\u4f8b\uff1a<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-1%ef%bc%9a%e5%96%ae%e5%88%97%e6%8e%92%e5%ba%8f-jcijrYKGLS\">\u7bc4\u4f8b 1\uff1a\u55ae\u5217\u6392\u5e8f<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u5305\u542b\u54e1\u5de5\u7684\u59d3\u540d\u548c\u85aa\u6c34\u3002\u82e5\u8981\u6839\u64da\u85aa\u6c34\u5347\u5e8f\u6392\u5217\u6240\u6709\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT name, salary\nFROM employees\nORDER BY salary ASC;<\/code><\/pre>\n<h3 id=\"%e7%af%84%e4%be%8b-2%ef%bc%9a%e5%a4%9a%e5%88%97%e6%8e%92%e5%ba%8f-jcijrYKGLS\">\u7bc4\u4f8b 2\uff1a\u591a\u5217\u6392\u5e8f<\/h3>\n<p>\u5982\u679c\u6211\u5011\u5e0c\u671b\u6839\u64da\u85aa\u6c34\u964d\u5e8f\u6392\u5217\uff0c\u4e26\u5728\u85aa\u6c34\u76f8\u540c\u7684\u60c5\u6cc1\u4e0b\u6839\u64da\u59d3\u540d\u5347\u5e8f\u6392\u5217\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT name, salary\nFROM employees\nORDER BY salary DESC, name ASC;<\/code><\/pre>\n<h3 id=\"%e7%af%84%e4%be%8b-3%ef%bc%9a%e6%8e%92%e5%ba%8f%e7%a9%ba%e5%80%bc-jcijrYKGLS\">\u7bc4\u4f8b 3\uff1a\u6392\u5e8f\u7a7a\u503c<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6578\u64da\u8868\u4e2d\u7684\u67d0\u4e9b\u5217\u53ef\u80fd\u5305\u542b\u7a7a\u503c\u3002\u4f7f\u7528 <code>ORDER BY<\/code> \u6642\uff0c\u7a7a\u503c\u7684\u6392\u5e8f\u884c\u70ba\u53ef\u80fd\u6703\u5f71\u97ff\u7d50\u679c\u3002\u901a\u5e38\uff0c\u7a7a\u503c\u6703\u88ab\u6392\u5728\u6700\u524d\u9762\u6216\u6700\u5f8c\u9762\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u6392\u5e8f\u65b9\u5f0f\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u63a7\u5236\u7a7a\u503c\u7684\u6392\u5e8f\uff1a<\/p>\n<pre><code>SELECT name, salary\nFROM employees\nORDER BY salary ASC NULLS LAST;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-jcijrYKGLS\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 <code>ORDER BY<\/code> \u8a9e\u53e5\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u6392\u5e8f\u7684\u5217\u5fc5\u9808\u5728 <code>SELECT<\/code> \u8a9e\u53e5\u4e2d\u5217\u51fa\uff0c\u5426\u5247\u6703\u5f15\u767c\u932f\u8aa4\u3002<\/li>\n<li>\u5982\u679c\u6392\u5e8f\u7684\u5217\u662f\u8868\u4e2d\u7684\u4e00\u500b\u8a08\u7b97\u7d50\u679c\uff0c\u5247\u5fc5\u9808\u5728 <code>ORDER BY<\/code> \u4e2d\u4f7f\u7528\u76f8\u540c\u7684\u8a08\u7b97\u8868\u9054\u5f0f\u3002<\/li>\n<li>\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u4f7f\u7528 <code>ORDER BY<\/code> \u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\uff0c\u56e0\u6b64\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u61c9\u8003\u616e\u7d22\u5f15\u7684\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jcijrYKGLS\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0c<code>ORDER BY<\/code> \u8a9e\u53e5\u662f SQL \u4e2d\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u4ee5\u6709\u5e8f\u7684\u65b9\u5f0f\u67e5\u770b\u6578\u64da\u3002\u7121\u8ad6\u662f\u55ae\u5217\u6392\u5e8f\u9084\u662f\u591a\u5217\u6392\u5e8f\uff0c\u6b63\u78ba\u4f7f\u7528 <code>ORDER BY<\/code> \u90fd\u80fd\u63d0\u9ad8\u6578\u64da\u67e5\u8a62\u7684\u6548\u7387\u548c\u53ef\u8b80\u6027\u3002\u5c0d\u65bc\u9700\u8981\u8655\u7406\u5927\u91cf\u6578\u64da\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u5347\u6027\u80fd\uff0c\u78ba\u4fdd\u6578\u64da\u67e5\u8a62\u7684\u5feb\u901f\u97ff\u61c9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u4e86\u89e3 SQL \u7684 Order By \u8a9e\u53e5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u6392\u5e8f\u67e5\u8a62\u7d50\u679c\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u6548\u7387\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-143779","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143779","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=143779"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143779\/revisions"}],"predecessor-version":[{"id":143780,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143779\/revisions\/143780"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=143779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=143779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=143779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}