{"id":21553,"date":"2024-01-02T11:23:26","date_gmt":"2024-01-02T11:23:26","guid":{"rendered":"https:\/\/server.hk\/blog\/21553\/"},"modified":"2024-11-14T10:30:51","modified_gmt":"2024-11-14T02:30:51","slug":"mongodb-glossary-skip","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21553\/","title":{"rendered":"MongoDB \u8a5e\u5f59\u8868 &#8211; \u8df3\u904e"},"content":{"rendered":"<h1 id=\"mongodb-glossary-skip-wFewJrhhwI\">MongoDB \u8a5e\u5f59\u8868 &#8211; \u8df3\u904e<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7684\u4e16\u754c\u4e2d\uff0c\u7531\u65bc\u5176\u9748\u6d3b\u6027\u3001\u53ef\u64f4\u5c55\u6027\u548c\u6613\u7528\u6027\uff0cMongoDB \u7372\u5f97\u4e86\u986f\u8457\u7684\u666e\u53ca\u3002\u4f5c\u70ba\u4e00\u500b NoSQL \u6578\u64da\u5eab\uff0cMongoDB \u63d0\u4f9b\u4e86\u5ee3\u6cdb\u7684\u529f\u80fd\u548c\u7279\u6027\uff0c\u4f7f\u5176\u6210\u70ba\u8a31\u591a\u958b\u767c\u4eba\u54e1\u548c\u4f01\u696d\u7684\u9996\u9078\u3002\u9019\u4e9b\u7279\u6027\u4e4b\u4e00\u5c31\u662f\u300c\u8df3\u904e\u300d\u65b9\u6cd5\uff0c\u5b83\u5141\u8a31\u7528\u6236\u5728 MongoDB \u96c6\u5408\u4e2d\u8df3\u904e\u6307\u5b9a\u6578\u91cf\u7684\u6587\u6a94\u3002<\/p>\n<h2 id=\"understanding-skip-in-mongodb-wFewJrhhwI\">\u7406\u89e3 MongoDB \u4e2d\u7684\u8df3\u904e<\/h2>\n<p>MongoDB \u4e2d\u7684\u8df3\u904e\u65b9\u6cd5\u8207\u300c\u67e5\u627e\u300d\u65b9\u6cd5\u4e00\u8d77\u4f7f\u7528\uff0c\u7528\u65bc\u8df3\u904e\u6307\u5b9a\u6578\u91cf\u7684\u6587\u6a94\u4e26\u6aa2\u7d22\u96c6\u5408\u4e2d\u7684\u5269\u9918\u6587\u6a94\u3002\u7576\u5be6\u73fe\u5206\u9801\u6216\u5e0c\u671b\u5f9e\u5927\u578b\u96c6\u5408\u4e2d\u6aa2\u7d22\u5b50\u96c6\u6642\uff0c\u9019\u7279\u5225\u6709\u7528\u3002<\/p>\n<p>\u8df3\u904e\u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u53c3\u6578\uff0c\u8a72\u53c3\u6578\u4ee3\u8868\u8981\u8df3\u904e\u7684\u6587\u6a94\u6578\u91cf\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u5305\u542b 100 \u500b\u6587\u6a94\u7684\u96c6\u5408\uff0c\u4e26\u4e14\u5e0c\u671b\u8df3\u904e\u524d 10 \u500b\u6587\u6a94\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>db.collection.find().skip(10)<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8df3\u904e\u524d 10 \u500b\u6587\u6a94\u4e26\u8fd4\u56de\u96c6\u5408\u4e2d\u7684\u5269\u9918 90 \u500b\u6587\u6a94\u3002<\/p>\n<h2 id=\"use-cases-for-skip-wFewJrhhwI\">\u8df3\u904e\u7684\u4f7f\u7528\u6848\u4f8b<\/h2>\n<p>\u8df3\u904e\u65b9\u6cd5\u5728\u5404\u7a2e\u5834\u666f\u4e2d\u90fd\u53ef\u4ee5\u5e36\u4f86\u597d\u8655\u3002\u8b93\u6211\u5011\u63a2\u7d22\u5e7e\u500b\u5e38\u898b\u7684\u4f7f\u7528\u6848\u4f8b\uff1a<\/p>\n<h3 id=\"1-pagination-wFewJrhhwI\">1. \u5206\u9801<\/h3>\n<p>\u5728\u61c9\u7528\u7a0b\u5f0f\u4e2d\u5be6\u73fe\u5206\u9801\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u8df3\u904e\u65b9\u6cd5\u6aa2\u7d22\u7279\u5b9a\u9801\u9762\u7684\u7d50\u679c\u3002\u901a\u904e\u5c07\u8df3\u904e\u8207\u300c\u9650\u5236\u300d\u65b9\u6cd5\u7d50\u5408\u4f7f\u7528\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u6aa2\u7d22\u6587\u6a94\u7684\u5b50\u96c6\u3002\u4f8b\u5982\uff0c\u8981\u6aa2\u7d22\u6bcf\u9801 10 \u500b\u6587\u6a94\u7684\u7b2c\u4e8c\u9801\u7d50\u679c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>db.collection.find().skip(10).limit(10)<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8df3\u904e\u524d 10 \u500b\u6587\u6a94\u4e26\u8fd4\u56de\u63a5\u4e0b\u4f86\u7684 10 \u500b\u6587\u6a94\uff0c\u6709\u6548\u5730\u7d66\u60a8\u7b2c\u4e8c\u9801\u7684\u7d50\u679c\u3002<\/p>\n<h3 id=\"2-efficient-data-retrieval-wFewJrhhwI\">2. \u9ad8\u6548\u6578\u64da\u6aa2\u7d22<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u53ea\u5c0d\u5f9e\u5927\u578b\u96c6\u5408\u4e2d\u6aa2\u7d22\u6587\u6a94\u7684\u5b50\u96c6\u611f\u8208\u8da3\u3002\u901a\u904e\u4f7f\u7528\u8df3\u904e\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u9ad8\u6548\u5730\u6aa2\u7d22\u6240\u9700\u7684\u5b50\u96c6\uff0c\u800c\u4e0d\u5fc5\u7372\u53d6\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3002\u9019\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u4e26\u6e1b\u5c11\u7db2\u7d61\u958b\u92b7\u3002<\/p>\n<h3 id=\"3-random-sampling-wFewJrhhwI\">3. \u96a8\u6a5f\u62bd\u6a23<\/h3>\n<p>\u8df3\u904e\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u7528\u65bc\u6587\u6a94\u7684\u96a8\u6a5f\u62bd\u6a23\u3002\u901a\u904e\u5c07\u8df3\u904e\u8207\u300c\u9650\u5236\u300d\u65b9\u6cd5\u548c\u96a8\u6a5f\u6578\u751f\u6210\u5668\u7d50\u5408\u4f7f\u7528\uff0c\u60a8\u53ef\u4ee5\u5f9e\u96c6\u5408\u4e2d\u6aa2\u7d22\u96a8\u6a5f\u5b50\u96c6\u7684\u6587\u6a94\u3002\u9019\u5c0d\u65bc\u6578\u64da\u5206\u6790\u3001\u6e2c\u8a66\u6216\u751f\u6210\u7528\u65bc\u8a13\u7df4\u6a5f\u5668\u5b78\u7fd2\u6a21\u578b\u7684\u96a8\u6a5f\u6a23\u672c\u7b49\u4efb\u52d9\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"limitations-and-considerations-wFewJrhhwI\">\u9650\u5236\u548c\u8003\u616e\u56e0\u7d20<\/h2>\n<p>\u96d6\u7136\u8df3\u904e\u65b9\u6cd5\u5728\u67d0\u4e9b\u5834\u666f\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u4f46\u8003\u616e\u5230\u5176\u9650\u5236\u548c\u6f5b\u5728\u7684\u6027\u80fd\u5f71\u97ff\u4e5f\u5f88\u91cd\u8981\uff1a<\/p>\n<h3 id=\"1-performance-impact-wFewJrhhwI\">1. \u6027\u80fd\u5f71\u97ff<\/h3>\n<p>\u5728\u5927\u578b\u96c6\u5408\u4e0a\u4f7f\u7528\u8df3\u904e\u65b9\u6cd5\u53ef\u80fd\u6703\u5c0d\u6027\u80fd\u7522\u751f\u986f\u8457\u5f71\u97ff\u3002\u6bcf\u500b\u88ab\u8df3\u904e\u7684\u6587\u6a94\u90fd\u9700\u8981\u984d\u5916\u7684\u8655\u7406\uff0c\u9019\u53ef\u80fd\u6703\u6e1b\u6162\u67e5\u8a62\u57f7\u884c\u901f\u5ea6\u3002\u5efa\u8b70\u8b39\u614e\u4f7f\u7528\u8df3\u904e\uff0c\u4e26\u8003\u616e\u5176\u4ed6\u65b9\u6cd5\uff0c\u4f8b\u5982\u4f7f\u7528\u7d22\u5f15\u5b57\u6bb5\u4ee5\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u6aa2\u7d22\u3002<\/p>\n<h3 id=\"2-consistency-and-sorting-wFewJrhhwI\">2. \u4e00\u81f4\u6027\u548c\u6392\u5e8f<\/h3>\n<p>\u7576\u4e00\u81f4\u6027\u548c\u6392\u5e8f\u5f88\u91cd\u8981\u6642\uff0c\u61c9\u8b39\u614e\u4f7f\u7528\u8df3\u904e\u65b9\u6cd5\u3002\u7531\u65bc\u8df3\u904e\u65b9\u6cd5\u8df3\u904e\u56fa\u5b9a\u6578\u91cf\u7684\u6587\u6a94\uff0c\u5c0d\u96c6\u5408\u7684\u4efb\u4f55\u66f4\u6539\uff08\u5982\u6587\u6a94\u522a\u9664\u6216\u63d2\u5165\uff09\u90fd\u53ef\u80fd\u5f71\u97ff\u7d50\u679c\u7684\u4e00\u81f4\u6027\u3002\u6b64\u5916\uff0c\u5982\u679c\u9700\u8981\u4ee5\u7279\u5b9a\u9806\u5e8f\u6aa2\u7d22\u6587\u6a94\uff0c\u5efa\u8b70\u8207\u8df3\u904e\u65b9\u6cd5\u4e00\u8d77\u4f7f\u7528\u300c\u6392\u5e8f\u300d\u65b9\u6cd5\uff0c\u4ee5\u78ba\u4fdd\u7d50\u679c\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"conclusion-wFewJrhhwI\">\u7d50\u8ad6<\/h2>\n<p>MongoDB \u4e2d\u7684\u8df3\u904e\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5f37\u5927\u7684\u65b9\u5f0f\u4f86\u8df3\u904e\u96c6\u5408\u4e2d\u7684\u6307\u5b9a\u6578\u91cf\u6587\u6a94\u3002\u7121\u8ad6\u60a8\u662f\u5728\u5be6\u73fe\u5206\u9801\u3001\u6aa2\u7d22\u6578\u64da\u5b50\u96c6\u9084\u662f\u9032\u884c\u96a8\u6a5f\u62bd\u6a23\uff0c\u8df3\u904e\u65b9\u6cd5\u90fd\u53ef\u4ee5\u6210\u70ba\u60a8 MongoDB \u5de5\u5177\u5305\u4e2d\u7684\u4e00\u500b\u6709\u50f9\u503c\u7684\u5de5\u5177\u3002\u7136\u800c\uff0c\u8003\u616e\u5230\u5176\u9650\u5236\u4e26\u8b39\u614e\u4f7f\u7528\u5b83\uff0c\u4ee5\u78ba\u4fdd\u6700\u4f73\u6027\u80fd\u548c\u4e00\u81f4\u7684\u7d50\u679c\u662f\u5f88\u91cd\u8981\u7684\u3002<\/p>\n<p>\u6709\u95dc MongoDB \u53ca\u5176\u529f\u80fd\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u8a5e\u5f59\u8868 &#038;#82&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-21553","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21553","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=21553"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21553\/revisions"}],"predecessor-version":[{"id":23897,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21553\/revisions\/23897"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}