{"id":186938,"date":"2024-11-11T10:05:25","date_gmt":"2024-11-11T02:05:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186938\/"},"modified":"2024-11-11T10:05:26","modified_gmt":"2024-11-11T02:05:26","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87%e8%a9%b3%e8%a7%a3-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186938\/","title":{"rendered":"\u6578\u64da\u5eab\u6392\u5e8f\u898f\u5247\u8a73\u89e3 (\u6578\u64da\u5eab\u5982\u4f55\u6392\u5e8f\u898f\u5247)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87%e8%a9%b3%e8%a7%a3-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e6%8e%92%e5%ba%8f%e8%a6%8f%e5%89%87-TqBLllOFIl\">\u6578\u64da\u5eab\u6392\u5e8f\u898f\u5247\u8a73\u89e3 (\u6578\u64da\u5eab\u5982\u4f55\u6392\u5e8f\u898f\u5247)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6392\u5e8f\u662f\u4e00\u500b\u81f3\u95dc\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u67e5\u8a62\u7d50\u679c\u7684\u986f\u793a\uff0c\u9084\u662f\u6578\u64da\u7684\u7d44\u7e54\uff0c\u6392\u5e8f\u90fd\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\uff0c\u5305\u62ec\u6392\u5e8f\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5e38\u898b\u7684\u6392\u5e8f\u65b9\u6cd5\u4ee5\u53ca\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e6%8e%92%e5%ba%8f%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-TqBLllOFIl\">\u6392\u5e8f\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6392\u5e8f\u662f\u6307\u5c07\u6578\u64da\u6309\u7167\u7279\u5b9a\u7684\u9806\u5e8f\u9032\u884c\u6392\u5217\u3002\u9019\u500b\u9806\u5e8f\u53ef\u4ee5\u662f\u5347\u5e8f\uff08\u5f9e\u5c0f\u5230\u5927\uff09\u6216\u964d\u5e8f\uff08\u5f9e\u5927\u5230\u5c0f\uff09\u3002\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6392\u5e8f\u901a\u5e38\u662f\u57fa\u65bc\u67d0\u4e00\u6216\u591a\u500b\u5b57\u6bb5\u9032\u884c\u7684\u3002\u6392\u5e8f\u7684\u7d50\u679c\u53ef\u4ee5\u5f71\u97ff\u67e5\u8a62\u7684\u6548\u7387\u548c\u7d50\u679c\u7684\u53ef\u8b80\u6027\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e7%9a%84%e6%8e%92%e5%ba%8f%e6%96%b9%e6%b3%95-TqBLllOFIl\">\u5e38\u898b\u7684\u6392\u5e8f\u65b9\u6cd5<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6700\u5e38\u898b\u7684\u6392\u5e8f\u65b9\u6cd5\u662f\u4f7f\u7528 SQL \u8a9e\u53e5\u4e2d\u7684 <code>ORDER BY<\/code> \u5b50\u53e5\u3002\u9019\u500b\u5b50\u53e5\u53ef\u4ee5\u8207 <code>SELECT<\/code> \u8a9e\u53e5\u7d50\u5408\u4f7f\u7528\uff0c\u4ee5\u6307\u5b9a\u67e5\u8a62\u7d50\u679c\u7684\u6392\u5e8f\u65b9\u5f0f\u3002<\/p>\n<h3 id=\"%e5%8d%87%e5%ba%8f%e5%92%8c%e9%99%8d%e5%ba%8f%e6%8e%92%e5%ba%8f-TqBLllOFIl\">\u5347\u5e8f\u548c\u964d\u5e8f\u6392\u5e8f<\/h3>\n<p>\u5728 SQL \u4e2d\uff0c\u4f7f\u7528 <code>ORDER BY<\/code> \u5b50\u53e5\u6642\uff0c\u53ef\u4ee5\u6307\u5b9a\u5347\u5e8f\u6216\u964d\u5e8f\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM employees ORDER BY last_name ASC;<\/code><\/pre>\n<p>\u4e0a\u8ff0\u67e5\u8a62\u5c07\u6839\u64da\u54e1\u5de5\u7684\u59d3\u6c0f\u9032\u884c\u5347\u5e8f\u6392\u5e8f\u3002\u5982\u679c\u9700\u8981\u964d\u5e8f\u6392\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>DESC<\/code> \u95dc\u9375\u5b57\uff1a<\/p>\n<pre><code>SELECT * FROM employees ORDER BY last_name DESC;<\/code><\/pre>\n<h3 id=\"%e5%a4%9a%e5%ad%97%e6%ae%b5%e6%8e%92%e5%ba%8f-TqBLllOFIl\">\u591a\u5b57\u6bb5\u6392\u5e8f<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u6839\u64da\u591a\u500b\u5b57\u6bb5\u9032\u884c\u6392\u5e8f\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5728 <code>ORDER BY<\/code> \u5b50\u53e5\u4e2d\u5217\u51fa\u591a\u500b\u5b57\u6bb5\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM employees ORDER BY department_id ASC, last_name ASC;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u9996\u5148\u6839\u64da\u90e8\u9580 ID \u9032\u884c\u5347\u5e8f\u6392\u5e8f\uff0c\u7136\u5f8c\u5728\u6bcf\u500b\u90e8\u9580\u5167\u6839\u64da\u59d3\u6c0f\u9032\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/p>\n<h2 id=\"%e6%8e%92%e5%ba%8f%e7%9a%84%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-TqBLllOFIl\">\u6392\u5e8f\u7684\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6392\u5e8f\u64cd\u4f5c\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u6027\u80fd\u3002\u70ba\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u7d22\u5f15\uff1a<\/strong>\u70ba\u9700\u8981\u6392\u5e8f\u7684\u5b57\u6bb5\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6392\u5e8f\u7684\u901f\u5ea6\u3002<\/li>\n<li><strong>\u9650\u5236\u7d50\u679c\u96c6\uff1a<\/strong>\u4f7f\u7528 <code>LIMIT<\/code> \u5b50\u53e5\u9650\u5236\u8fd4\u56de\u7684\u7d50\u679c\u6578\u91cf\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6392\u5e8f\u6240\u9700\u7684\u6642\u9593\u3002<\/li>\n<li><strong>\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6392\u5e8f\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u4e0d\u9700\u8981\u5c0d\u6240\u6709\u6578\u64da\u9032\u884c\u6392\u5e8f\uff0c\u50c5\u5c0d\u9700\u8981\u7684\u90e8\u5206\u9032\u884c\u6392\u5e8f\u5373\u53ef\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e7%a4%ba%e4%be%8b-TqBLllOFIl\">\u5be6\u969b\u61c9\u7528\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>products<\/code> \u7684\u8868\uff0c\u5305\u542b\u7522\u54c1\u7684\u540d\u7a31\u3001\u50f9\u683c\u548c\u985e\u5225\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6392\u5e8f\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u6839\u64da\u50f9\u683c\u5347\u5e8f\u6392\u5e8f\nSELECT * FROM products ORDER BY price ASC;\n\n-- \u6839\u64da\u985e\u5225\u964d\u5e8f\u6392\u5e8f\uff0c\u7136\u5f8c\u6839\u64da\u50f9\u683c\u5347\u5e8f\u6392\u5e8f\nSELECT * FROM products ORDER BY category DESC, price ASC;<\/code><\/pre>\n<p>\u9019\u4e9b\u67e5\u8a62\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u627e\u5230\u6240\u9700\u7684\u7522\u54c1\uff0c\u4e26\u6839\u64da\u4e0d\u540c\u7684\u9700\u6c42\u9032\u884c\u6392\u5e8f\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-TqBLllOFIl\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u6392\u5e8f\u898f\u5247\u662f\u6578\u64da\u7ba1\u7406\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528 <code>ORDER BY<\/code> \u5b50\u53e5\uff0c\u4e26\u8003\u616e\u6027\u80fd\u512a\u5316\u7684\u7b56\u7565\uff0c\u7528\u6236\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u6aa2\u7d22\u6578\u64da\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u6280\u8853\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\u548c\u6548\u679c\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0e\u6578\u64da\u5eab\u6392\u5e8f\u898f\u5247\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u5c0d\u6578\u64da\u9032\u884c\u6392\u5e8f\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\u8207\u6578\u64da\u7ba1\u7406\u80fd\u529b\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-186938","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186938","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=186938"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186938\/revisions"}],"predecessor-version":[{"id":186939,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186938\/revisions\/186939"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186938"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186938"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186938"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}