{"id":21548,"date":"2024-01-02T11:18:24","date_gmt":"2024-01-02T11:18:24","guid":{"rendered":"https:\/\/server.hk\/blog\/21548\/"},"modified":"2024-11-14T10:30:55","modified_gmt":"2024-11-14T02:30:55","slug":"mongodb-glossary-hint","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21548\/","title":{"rendered":"MongoDB\u8a5e\u5f59\u8868 &#8211; \u63d0\u793a"},"content":{"rendered":"<h1 id=\"mongodb-glossary-hint-vgFMBkQUrK\">MongoDB\u8a5e\u5f59\u8868 &#8211; \u63d0\u793a<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7684\u4e16\u754c\u88e1\uff0cMongoDB\u56e0\u5176\u9748\u6d3b\u6027\u3001\u53ef\u64f4\u5c55\u6027\u53ca\u6613\u7528\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u7684\u6b61\u8fce\u3002\u4f5c\u70ba\u4e00\u7a2eNoSQL\u6578\u64da\u5eab\uff0cMongoDB\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\uff0c\u4f7f\u5176\u6210\u70ba\u773e\u591a\u958b\u767c\u8005\u548c\u4f01\u696d\u7684\u9996\u9078\u3002\u5176\u4e2d\u4e00\u9805\u7279\u6027\u4fbf\u662f\u300c\u63d0\u793a\u300d\u3002<\/p>\n<h2 id=\"what-is-a-hint-in-mongodb-vgFMBkQUrK\">MongoDB\u4e2d\u7684\u63d0\u793a\u662f\u4ec0\u9ebc\uff1f<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u63d0\u793a\u662f\u4e00\u7a2e\u6a5f\u5236\uff0c\u5141\u8a31\u958b\u767c\u8005\u70ba\u67e5\u8a62\u512a\u5316\u5668\u63d0\u4f9b\u7279\u5b9a\u7684\u7d22\u5f15\uff0c\u4ee5\u4fbf\u5728\u57f7\u884c\u67e5\u8a62\u6642\u4f7f\u7528\u3002\u901a\u904e\u63d0\u4f9b\u63d0\u793a\uff0c\u958b\u767c\u8005\u80fd\u5f71\u97ff\u67e5\u8a62\u512a\u5316\u5668\u7684\u6c7a\u7b56\u904e\u7a0b\uff0c\u5f15\u5c0e\u5176\u9078\u64c7\u7279\u5b9a\u7684\u7d22\u5f15\u4f86\u57f7\u884c\u67e5\u8a62\u3002<\/p>\n<p>\u9ed8\u8a8d\u60c5\u6cc1\u4e0b\uff0cMongoDB\u7684\u67e5\u8a62\u512a\u5316\u5668\u6703\u5206\u6790\u67e5\u8a62\uff0c\u4e26\u6839\u64da\u7d22\u5f15\u57fa\u6578\u3001\u7d22\u5f15\u5927\u5c0f\u53ca\u67e5\u8a62\u9078\u64c7\u6027\u7b49\u591a\u7a2e\u56e0\u7d20\u9078\u64c7\u6700\u5408\u9069\u7684\u7d22\u5f15\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u67e5\u8a62\u512a\u5316\u5668\u53ef\u80fd\u4e0d\u6703\u9078\u64c7\u6700\u4f73\u7684\u7d22\u5f15\uff0c\u5f9e\u800c\u5c0e\u81f4\u67e5\u8a62\u6027\u80fd\u4e0d\u4f73\u3002\u9019\u6b63\u662f\u63d0\u793a\u6d3e\u4e0a\u7528\u5834\u7684\u6642\u5019\u3002<\/p>\n<h2 id=\"how-to-use-hints-in-mongodb-vgFMBkQUrK\">\u5982\u4f55\u5728MongoDB\u4e2d\u4f7f\u7528\u63d0\u793a\uff1f<\/h2>\n<p>\u8981\u5728MongoDB\u4e2d\u4f7f\u7528\u63d0\u793a\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u67e5\u8a62\u4e2d\u5305\u542b\u300chint\u300d\u65b9\u6cd5\u3002\u9019\u500b\u300chint\u300d\u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u7d22\u5f15\u898f\u7bc4\u4f5c\u70ba\u53c3\u6578\uff0c\u53ef\u4ee5\u662f\u7d22\u5f15\u540d\u7a31\u6216\u7d22\u5f15\u898f\u7bc4\u6587\u6a94\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u8003\u616e\u4e00\u500b\u540d\u70ba\u300cusers\u300d\u7684\u96c6\u5408\uff0c\u5728\u300cemail\u300d\u5b57\u6bb5\u4e0a\u6709\u4e00\u500b\u7d22\u5f15\u3002\u8981\u4f7f\u7528\u8a72\u7d22\u5f15\u7684\u63d0\u793a\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>db.users.find({ email: \"example@example.com\" }).hint(\"email_index\");\r\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u300chint\u300d\u65b9\u6cd5\u88ab\u7528\u4f86\u6307\u5b9a\u300cemail_index\u300d\u4f5c\u70ba\u67e5\u8a62\u57f7\u884c\u6642\u4f7f\u7528\u7684\u7d22\u5f15\u3002<\/p>\n<h2 id=\"when-to-use-hints-in-mongodb-vgFMBkQUrK\">\u4f55\u6642\u5728MongoDB\u4e2d\u4f7f\u7528\u63d0\u793a\uff1f<\/h2>\n<p>\u96d6\u7136\u63d0\u793a\u53ef\u4ee5\u662f\u4e00\u500b\u512a\u5316\u67e5\u8a62\u6027\u80fd\u7684\u5f37\u5927\u5de5\u5177\uff0c\u4f46\u61c9\u7576\u5be9\u614e\u4f7f\u7528\u3002\u4e00\u822c\u5efa\u8b70\u4f9d\u8cf4MongoDB\u7684\u67e5\u8a62\u512a\u5316\u5668\u81ea\u52d5\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u63d0\u793a\u662f\u6709\u76ca\u7684\uff1a<\/p>\n<ul>\n<li><strong>\u5f37\u5236\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u67e5\u8a62\u512a\u5316\u5668\u53ef\u80fd\u56e0\u5404\u7a2e\u56e0\u7d20\u672a\u80fd\u9078\u64c7\u6700\u4f73\u7684\u7d22\u5f15\u3002\u901a\u904e\u4f7f\u7528\u63d0\u793a\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5f37\u8feb\u67e5\u8a62\u512a\u5316\u5668\u4f7f\u7528\u7279\u5b9a\u7684\u7d22\u5f15\uff0c\u5f9e\u800c\u78ba\u4fdd\u6700\u4f73\u7684\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u7d22\u5f15\u6027\u80fd\uff1a<\/strong>\u63d0\u793a\u5c0d\u65bc\u6e2c\u8a66\u7279\u5b9a\u67e5\u8a62\u4e0a\u4e0d\u540c\u7d22\u5f15\u7684\u6027\u80fd\u975e\u5e38\u6709\u7528\u3002\u901a\u904e\u70ba\u4e0d\u540c\u7684\u7d22\u5f15\u63d0\u4f9b\u63d0\u793a\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6bd4\u8f03\u67e5\u8a62\u57f7\u884c\u6642\u9593\u4e26\u9078\u64c7\u6700\u6709\u6548\u7684\u7d22\u5f15\u3002<\/li>\n<li><strong>\u8207\u5206\u7247\u96c6\u7fa4\u5408\u4f5c\uff1a<\/strong>\u5728\u5206\u7247\u96c6\u7fa4\u4e2d\uff0c\u63d0\u793a\u53ef\u4ee5\u6839\u64da\u7d22\u5f15\u5c07\u67e5\u8a62\u8def\u7531\u5230\u7279\u5b9a\u7684\u5206\u7247\uff0c\u9019\u6709\u52a9\u65bc\u5728\u96c6\u7fa4\u4e2d\u5747\u52fb\u5206\u914d\u67e5\u8a62\u8ca0\u8f09\u3002<\/li>\n<\/ul>\n<h2 id=\"conclusion-vgFMBkQUrK\">\u7d50\u8ad6<\/h2>\n<p>MongoDB\u4e2d\u7684\u63d0\u793a\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5f71\u97ff\u67e5\u8a62\u512a\u5316\u5668\u7d22\u5f15\u9078\u64c7\u904e\u7a0b\u7684\u65b9\u6cd5\u3002\u901a\u904e\u4f7f\u7528\u63d0\u793a\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u512a\u5316\u67e5\u8a62\u6027\u80fd\uff0c\u6e2c\u8a66\u7d22\u5f15\u6548\u7387\uff0c\u4e26\u66f4\u6709\u6548\u5730\u8207\u5206\u7247\u96c6\u7fa4\u5354\u4f5c\u3002\u7136\u800c\uff0c\u91cd\u8981\u7684\u662f\u8981\u5be9\u614e\u4f7f\u7528\u63d0\u793a\uff0c\u4e26\u5728\u5927\u591a\u6578\u60c5\u6cc1\u4e0b\u4f9d\u8cf4MongoDB\u7684\u67e5\u8a62\u512a\u5316\u5668\uff0c\u4ee5\u78ba\u4fdd\u6700\u4f73\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u66f4\u591a\u95dc\u65bcMongoDB\u53ca\u5176\u529f\u80fd\u7684\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u8a2a\u554f<a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u9019\u662f\u4e00\u5bb6\u9818\u5148\u7684VPS\u4e3b\u6a5f\u516c\u53f8\uff0c\u63d0\u4f9b\u53ef\u9760\u4e14\u53ef\u64f4\u5c55\u7684MongoDB\u4e3b\u6a5f\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB\u8a5e\u5f59\u8868 &#038;#821&#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-21548","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21548","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=21548"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21548\/revisions"}],"predecessor-version":[{"id":23906,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21548\/revisions\/23906"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}