{"id":2453,"date":"2025-03-07T22:52:33","date_gmt":"2025-03-07T14:52:33","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2453"},"modified":"2025-03-07T22:52:33","modified_gmt":"2025-03-07T14:52:33","slug":"mongodb-sort-%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/07\/mongodb-sort-%e6%96%b9%e6%b3%95\/","title":{"rendered":"MongoDB sort() \u65b9\u6cd5"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><code>sort()<\/code> \u65b9\u6cd5\u7528\u4e8e\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u652f\u6301\u5347\u5e8f\uff08<code>1<\/code>\uff09\u548c\u964d\u5e8f\uff08<code>-1<\/code>\uff09\u6392\u5217\u3002\u901a\u5e38\u7528\u4e8e\u914d\u5408 <code>limit()<\/code> \u548c <code>skip()<\/code> \u5b9e\u73b0\u5206\u9875\u67e5\u8be2\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1. \u57fa\u672c\u6392\u5e8f<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5347\u5e8f\uff081\uff09<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6309\u7167 <code>price<\/code> \u7531\u5c0f\u5230\u5927\u6392\u5e8f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.find().sort({ price: 1 })<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u964d\u5e8f\uff08-1\uff09<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6309\u7167 <code>price<\/code> \u7531\u5927\u5230\u5c0f\u6392\u5e8f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.find().sort({ price: -1 })<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. \u591a\u5b57\u6bb5\u6392\u5e8f<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u6309\u7167\u591a\u4e2a\u5b57\u6bb5\u6392\u5e8f\uff0c\u4f18\u5148\u6309\u7167\u7b2c\u4e00\u4e2a\u5b57\u6bb5\u6392\u5e8f\uff0c\u5982\u679c\u76f8\u540c\u5219\u6309\u7167\u7b2c\u4e8c\u4e2a\u5b57\u6bb5\u6392\u5e8f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6309 <code>category<\/code> \u5347\u5e8f\u6392\u5217\uff0c\u518d\u6309 <code>price<\/code> \u964d\u5e8f\u6392\u5217\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.find().sort({ category: 1, price: -1 })<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. \u7ed3\u5408 <code>limit()<\/code> \u548c <code>skip()<\/code><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38 <code>sort()<\/code> \u4f1a\u914d\u5408 <code>limit()<\/code> \u548c <code>skip()<\/code> \u8fdb\u884c\u5206\u9875\u67e5\u8be2\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u8be2 <code>products<\/code> \u96c6\u5408\u4e2d\u7684<strong>\u7b2c 2 \u9875\u6570\u636e\uff08\u6bcf\u9875 5 \u6761\uff09<\/strong>\uff0c\u6309 <code>price<\/code> \u4ece\u9ad8\u5230\u4f4e\u6392\u5e8f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.find().sort({ price: -1 }).skip(5).limit(5)<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. \u7d22\u5f15\u4f18\u5316 <code>sort()<\/code> \u6027\u80fd<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c <code>sort()<\/code> \u5b57\u6bb5\u6ca1\u6709\u7d22\u5f15\uff0cMongoDB \u9700\u8981\u5728\u5185\u5b58\u4e2d\u6392\u5e8f\uff0c<strong>\u6570\u636e\u91cf\u5927\u65f6\u4f1a\u5f71\u54cd\u6027\u80fd<\/strong>\u3002<br>\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u63d0\u9ad8 <code>sort()<\/code> \u67e5\u8be2\u6548\u7387\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a <code>price<\/code> \u5b57\u6bb5\u521b\u5efa\u7d22\u5f15\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.createIndex({ price: 1 })<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u6837 MongoDB \u76f4\u63a5\u4f7f\u7528\u7d22\u5f15\u6392\u5e8f\uff0c\u800c\u4e0d\u4f1a\u6d88\u8017\u989d\u5916\u5185\u5b58\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. <code>sort()<\/code> \u5728\u5d4c\u5957\u6587\u6863\u4e2d\u7684\u5e94\u7528<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u6587\u6863\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n  \"_id\": 1,\n  \"name\": \"Laptop\",\n  \"details\": {\n    \"price\": 1200,\n    \"rating\": 4.5\n  }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u6309\u7167 <code>details.price<\/code> \u8fdb\u884c\u6392\u5e8f<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.find().sort({ \"details.price\": 1 })<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6. <code>sort()<\/code> \u4e0e <code>find()<\/code> \u7ed3\u5408<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u5728 <code>find()<\/code> \u4e2d\u4f7f\u7528\u6761\u4ef6\u67e5\u8be2\uff0c\u518d\u914d\u5408 <code>sort()<\/code>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u8be2 <code>price &gt; 50<\/code> \u7684\u5546\u54c1\uff0c\u5e76\u6309 <code>price<\/code> \u964d\u5e8f\u6392\u5e8f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.find({ price: { $gt: 50 } }).sort({ price: -1 })<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>7. <code>sort()<\/code> \u5728\u805a\u5408\u7ba1\u9053\uff08Aggregation\uff09\u4e2d\u7684\u4f7f\u7528<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 <code>aggregate()<\/code> \u65b9\u6cd5\u4e2d\uff0c\u4f7f\u7528 <code>$sort<\/code> \u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>db.products.aggregate(&#91;\n  { $match: { category: \"electronics\" } },  \/\/ \u5148\u7b5b\u9009\u7c7b\u522b\n  { $sort: { price: -1 } },  \/\/ \u6309\u4ef7\u683c\u964d\u5e8f\n  { $limit: 5 }  \/\/ \u53d6\u524d 5 \u4e2a\n])<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u603b\u7ed3<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u65b9\u6cd5<\/th><th>\u4f5c\u7528<\/th><\/tr><\/thead><tbody><tr><td><code>sort({ field: 1 })<\/code><\/td><td>\u6309 <code>field<\/code> \u5347\u5e8f\u6392\u5217<\/td><\/tr><tr><td><code>sort({ field: -1 })<\/code><\/td><td>\u6309 <code>field<\/code> \u964d\u5e8f\u6392\u5217<\/td><\/tr><tr><td><code>sort({ field1: 1, field2: -1 })<\/code><\/td><td>\u5148\u6309 <code>field1<\/code> \u5347\u5e8f\uff0c\u518d\u6309 <code>field2<\/code> \u964d\u5e8f<\/td><\/tr><tr><td><code>find().sort().skip().limit()<\/code><\/td><td>\u7ed3\u5408\u5206\u9875\u67e5\u8be2<\/td><\/tr><tr><td><code>createIndex({ field: 1 })<\/code><\/td><td>\u5efa\u7acb\u7d22\u5f15\uff0c\u63d0\u9ad8 <code>sort()<\/code> \u6027\u80fd<\/td><\/tr><tr><td><code>$sort<\/code> (\u805a\u5408)<\/td><td>\u5728 <code>aggregate()<\/code> \u4e2d\u6392\u5e8f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>sort() \u65b9\u6cd5\u7528\u4e8e\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u652f\u6301\u5347\u5e8f\uff081\uff09\u548c\u964d\u5e8f\uff08-1\uff09\u6392\u5217\u3002\u901a\u5e38\u7528\u4e8e\u914d\u5408 limit() \u548c  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77],"tags":[],"class_list":["post-2453","post","type-post","status-publish","format-standard","hentry","category-mongodb"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2453"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2453\/revisions"}],"predecessor-version":[{"id":2454,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2453\/revisions\/2454"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}