{"id":173323,"date":"2024-11-07T17:04:20","date_gmt":"2024-11-07T09:04:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173323\/"},"modified":"2024-11-07T17:04:20","modified_gmt":"2024-11-07T09:04:20","slug":"%e5%a6%82%e4%bd%95%e5%b0%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e9%80%b2%e8%a1%8c%e6%8e%92%e5%ba%8f%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e6%8e%92%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173323\/","title":{"rendered":"\u5982\u4f55\u5c0d\u6578\u64da\u5eab\u6587\u4ef6\u9032\u884c\u6392\u5e8f\uff1f (\u6578\u64da\u5eab\u6587\u4ef6\u6392\u5e8f)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%b0%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e9%80%b2%e8%a1%8c%e6%8e%92%e5%ba%8f%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e6%8e%92%e5%ba%8f-uZaWgLqXEf\">\u5982\u4f55\u5c0d\u6578\u64da\u5eab\u6587\u4ef6\u9032\u884c\u6392\u5e8f\uff1f (\u6578\u64da\u5eab\u6587\u4ef6\u6392\u5e8f)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6392\u5e8f\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u6aa2\u7d22\u548c\u5206\u6790\u6578\u64da\u3002\u7121\u8ad6\u662f\u95dc\u806f\u578b\u6578\u64da\u5eab\u9084\u662f\u975e\u95dc\u806f\u578b\u6578\u64da\u5eab\uff0c\u6392\u5e8f\u90fd\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7528\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5c0d\u6578\u64da\u5eab\u6587\u4ef6\u9032\u884c\u6392\u5e8f\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8e%92%e5%ba%8f%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-uZaWgLqXEf\">\u6578\u64da\u5eab\u6392\u5e8f\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u5eab\u6392\u5e8f\u662f\u6307\u6839\u64da\u7279\u5b9a\u7684\u5217\u6216\u5b57\u6bb5\u5c0d\u6578\u64da\u9032\u884c\u6392\u5217\u7684\u904e\u7a0b\u3002\u9019\u4e00\u904e\u7a0b\u901a\u5e38\u4f7f\u7528 SQL \u8a9e\u53e5\u4e2d\u7684 <code>ORDER BY<\/code> \u5b50\u53e5\u4f86\u5be6\u73fe\u3002\u6392\u5e8f\u53ef\u4ee5\u662f\u5347\u5e8f\uff08ASC\uff09\u6216\u964d\u5e8f\uff08DESC\uff09\uff0c\u4e26\u4e14\u53ef\u4ee5\u6839\u64da\u4e00\u500b\u6216\u591a\u500b\u5217\u9032\u884c\u6392\u5e8f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-sql-%e9%80%b2%e8%a1%8c%e6%8e%92%e5%ba%8f-uZaWgLqXEf\">\u4f7f\u7528 SQL \u9032\u884c\u6392\u5e8f<\/h2>\n<p>\u5728\u95dc\u806f\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u4f7f\u7528 SQL \u9032\u884c\u6392\u5e8f\u662f\u6700\u5e38\u898b\u7684\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684 SQL \u6392\u5e8f\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e5%8d%87%e5%ba%8f%e6%8e%92%e5%ba%8f-uZaWgLqXEf\">\u5347\u5e8f\u6392\u5e8f<\/h3>\n<pre><code>SELECT * FROM customers\nORDER BY last_name ASC;<\/code><\/pre>\n<p>\u4e0a\u8ff0\u67e5\u8a62\u5c07\u5f9e <code>customers<\/code> \u8868\u4e2d\u9078\u64c7\u6240\u6709\u8a18\u9304\uff0c\u4e26\u6839\u64da <code>last_name<\/code> \u5217\u7684\u5b57\u6bcd\u9806\u5e8f\u9032\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/p>\n<h3 id=\"%e9%99%8d%e5%ba%8f%e6%8e%92%e5%ba%8f-uZaWgLqXEf\">\u964d\u5e8f\u6392\u5e8f<\/h3>\n<pre><code>SELECT * FROM orders\nORDER BY order_date DESC;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u5f9e <code>orders<\/code> \u8868\u4e2d\u9078\u64c7\u6240\u6709\u8a18\u9304\uff0c\u4e26\u6839\u64da <code>order_date<\/code> \u5217\u7684\u65e5\u671f\u9032\u884c\u964d\u5e8f\u6392\u5e8f\uff0c\u9019\u6a23\u6700\u65b0\u7684\u8a02\u55ae\u5c07\u986f\u793a\u5728\u6700\u4e0a\u9762\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e5%88%97%e6%8e%92%e5%ba%8f-uZaWgLqXEf\">\u591a\u5217\u6392\u5e8f<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u6839\u64da\u591a\u500b\u5217\u9032\u884c\u6392\u5e8f\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5728 <code>ORDER BY<\/code> \u5b50\u53e5\u4e2d\u5217\u51fa\u591a\u500b\u5217\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>SELECT * FROM employees\nORDER BY department ASC, last_name ASC;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u9996\u5148\u6839\u64da <code>department<\/code> \u5217\u9032\u884c\u5347\u5e8f\u6392\u5e8f\uff0c\u7136\u5f8c\u5728\u6bcf\u500b\u90e8\u9580\u5167\u6839\u64da <code>last_name<\/code> \u5217\u9032\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/p>\n<h2 id=\"%e9%9d%9e%e9%97%9c%e8%81%af%e5%9e%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%8e%92%e5%ba%8f-uZaWgLqXEf\">\u975e\u95dc\u806f\u578b\u6578\u64da\u5eab\u7684\u6392\u5e8f<\/h2>\n<p>\u5728\u975e\u95dc\u806f\u578b\u6578\u64da\u5eab\uff08\u5982 MongoDB\uff09\u4e2d\uff0c\u6392\u5e8f\u7684\u65b9\u5f0f\u7565\u6709\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 MongoDB \u9032\u884c\u6392\u5e8f\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.find().sort({ age: 1 });<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u5f9e\u6307\u5b9a\u7684\u96c6\u5408\u4e2d\u9078\u64c7\u6240\u6709\u6587\u6a94\uff0c\u4e26\u6839\u64da <code>age<\/code> \u5b57\u6bb5\u9032\u884c\u5347\u5e8f\u6392\u5e8f\u3002\u82e5\u8981\u9032\u884c\u964d\u5e8f\u6392\u5e8f\uff0c\u53ea\u9700\u5c07 <code>1<\/code> \u6539\u70ba <code>-1<\/code>\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-uZaWgLqXEf\">\u6392\u5e8f\u7684\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u9032\u884c\u6392\u5e8f\u64cd\u4f5c\u6642\uff0c\u6027\u80fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u5c0d\u65bc\u5927\u578b\u6578\u64da\u96c6\uff0c\u6392\u5e8f\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u70ba\u4e86\u63d0\u9ad8\u6392\u5e8f\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5c0d\u6392\u5e8f\u5217\u5efa\u7acb\u7d22\u5f15\uff0c\u9019\u6a23\u53ef\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u907f\u514d\u5728\u6392\u5e8f\u6642\u4f7f\u7528\u904e\u591a\u7684\u8a08\u7b97\u6216\u51fd\u6578\uff0c\u9019\u6703\u589e\u52a0\u8655\u7406\u6642\u9593\u3002<\/li>\n<li>\u5728\u53ef\u80fd\u7684\u60c5\u6cc1\u4e0b\uff0c\u9650\u5236\u67e5\u8a62\u8fd4\u56de\u7684\u8a18\u9304\u6578\u91cf\uff0c\u4f8b\u5982\u4f7f\u7528 <code>LIMIT<\/code> \u5b50\u53e5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uZaWgLqXEf\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5eab\u6587\u4ef6\u7684\u6392\u5e8f\u662f\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u6aa2\u7d22\u548c\u5206\u6790\u6578\u64da\u3002\u7121\u8ad6\u662f\u4f7f\u7528 SQL \u9084\u662f\u975e\u95dc\u806f\u578b\u6578\u64da\u5eab\u7684\u67e5\u8a62\u8a9e\u8a00\uff0c\u638c\u63e1\u6392\u5e8f\u7684\u6280\u5de7\u90fd\u80fd\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u9748\u6d3b\u6027\u3002\u4e86\u89e3\u5982\u4f55\u5c0d\u6578\u64da\u5eab\u6587\u4ef6\u9032\u884c\u6392\u5e8f\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u60a8\u7684\u6578\u64da\u7ba1\u7406\u80fd\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5c0d\u6578\u64da\u5eab\u6587\u4ef6\u9032\u884c\u6392\u5e8f\uff0c\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u6548\u7387\uff0c\u512a\u5316\u67e5\u8a62\u7d50\u679c\uff0c\u7c21\u5316\u6578\u64da\u7ba1\u7406\u6d41\u7a0b\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-173323","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173323","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=173323"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173323\/revisions"}],"predecessor-version":[{"id":173324,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173323\/revisions\/173324"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}