{"id":247373,"date":"2024-01-02T21:15:23","date_gmt":"2024-01-02T13:15:23","guid":{"rendered":"https:\/\/www.idc.net\/help\/247373\/"},"modified":"2024-01-02T21:15:23","modified_gmt":"2024-01-02T13:15:23","slug":"mongodb-%e6%9c%af%e8%af%ad-%e8%a7%a3%e9%87%8a%e8%ae%a1%e5%88%92","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247373\/","title":{"rendered":"MongoDB \u672f\u8bed &#8211; \u89e3\u91ca\u8ba1\u5212"},"content":{"rendered":"<p><title id=\"mongodb-%e6%9c%af%e8%af%ad-%e8%a7%a3%e9%87%8a%e8%ae%a1%e5%88%92-cXqnUdZeDD\">MongoDB \u672f\u8bed - \u89e3\u91ca\u8ba1\u5212<\/title><\/p>\n<h1 id=\"mongodb-%e6%9c%af%e8%af%ad-%e8%a7%a3%e9%87%8a%e8%ae%a1%e5%88%92-cXqnUdZeDD\">MongoDB \u672f\u8bed - \u89e3\u91ca\u8ba1\u5212<\/h1>\n<p>\u5728MongoDB\u4e2d\uff0c\u89e3\u91ca\u8ba1\u5212\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u548c\u6570\u636e\u5e93\u7ba1\u7406\u5458\u4f18\u5316\u67e5\u8be2\u6027\u80fd\u3002\u89e3\u91ca\u8ba1\u5212\u662fMongoDB\u67e5\u8be2\u4f18\u5316\u5668\u751f\u6210\u7684\u4e00\u79cd\u6587\u6863\uff0c\u5b83\u63cf\u8ff0\u4e86MongoDB\u6267\u884c\u67e5\u8be2\u7684\u8be6\u7ec6\u6b65\u9aa4\u548c\u6267\u884c\u8ba1\u5212\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e9%87%8a%e8%ae%a1%e5%88%92%e7%9a%84%e4%bd%9c%e7%94%a8-cXqnUdZeDD\">\u89e3\u91ca\u8ba1\u5212\u7684\u4f5c\u7528<\/h2>\n<p>\u89e3\u91ca\u8ba1\u5212\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u548c\u6570\u636e\u5e93\u7ba1\u7406\u5458\u7406\u89e3\u67e5\u8be2\u7684\u6267\u884c\u65b9\u5f0f\uff0c\u5e76\u627e\u51fa\u6f5c\u5728\u7684\u6027\u80fd\u95ee\u9898\u3002\u901a\u8fc7\u5206\u6790\u89e3\u91ca\u8ba1\u5212\uff0c\u53ef\u4ee5\u786e\u5b9a\u67e5\u8be2\u662f\u5426\u4f7f\u7528\u4e86\u7d22\u5f15\uff0c\u4ee5\u53ca\u7d22\u5f15\u7684\u9009\u62e9\u662f\u5426\u5408\u7406\u3002\u6b64\u5916\uff0c\u89e3\u91ca\u8ba1\u5212\u8fd8\u53ef\u4ee5\u663e\u793a\u67e5\u8be2\u7684\u6267\u884c\u65f6\u95f4\u3001\u626b\u63cf\u6587\u6863\u6570\u3001\u8fd4\u56de\u6587\u6863\u6570\u7b49\u5173\u952e\u6307\u6807\uff0c\u5e2e\u52a9\u8bc4\u4f30\u67e5\u8be2\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e9%87%8a%e8%ae%a1%e5%88%92%e7%9a%84%e7%94%9f%e6%88%90-cXqnUdZeDD\">\u89e3\u91ca\u8ba1\u5212\u7684\u751f\u6210<\/h2>\n<p>\u8981\u751f\u6210\u89e3\u91ca\u8ba1\u5212\uff0c\u53ef\u4ee5\u4f7f\u7528MongoDB\u7684explain()\u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u67e5\u8be2\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u89e3\u91ca\u8ba1\u5212\u7684\u6587\u6863\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>db.collection.find({name: \"John\"}).explain()<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u5c06\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u67e5\u8be2\u89e3\u91ca\u8ba1\u5212\u7684\u6587\u6863\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e9%87%8a%e8%ae%a1%e5%88%92%e7%9a%84%e5%85%b3%e9%94%ae%e5%ad%97%e6%ae%b5-cXqnUdZeDD\">\u89e3\u91ca\u8ba1\u5212\u7684\u5173\u952e\u5b57\u6bb5<\/h2>\n<p>\u89e3\u91ca\u8ba1\u5212\u6587\u6863\u4e2d\u7684\u4e00\u4e9b\u5173\u952e\u5b57\u6bb5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>queryPlanner\uff1a<\/strong>\u8be5\u5b57\u6bb5\u63cf\u8ff0\u4e86\u67e5\u8be2\u4f18\u5316\u5668\u7684\u9009\u62e9\u8fc7\u7a0b\uff0c\u5305\u62ec\u9009\u62e9\u7d22\u5f15\u548c\u6267\u884c\u8ba1\u5212\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/li>\n<li><strong>executionStats\uff1a<\/strong>\u8be5\u5b57\u6bb5\u5305\u542b\u4e86\u67e5\u8be2\u7684\u6267\u884c\u7edf\u8ba1\u4fe1\u606f\uff0c\u5982\u6267\u884c\u65f6\u95f4\u3001\u626b\u63cf\u6587\u6863\u6570\u3001\u8fd4\u56de\u6587\u6863\u6570\u7b49\u3002<\/li>\n<li><strong>winningPlan\uff1a<\/strong>\u8be5\u5b57\u6bb5\u63cf\u8ff0\u4e86\u4f18\u5316\u5668\u9009\u62e9\u7684\u6267\u884c\u8ba1\u5212\u3002<\/li>\n<li><strong>rejectedPlans\uff1a<\/strong>\u8be5\u5b57\u6bb5\u5305\u542b\u4e86\u4f18\u5316\u5668\u672a\u9009\u62e9\u7684\u5176\u4ed6\u6267\u884c\u8ba1\u5212\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e9%87%8a%e8%ae%a1%e5%88%92%e7%9a%84%e4%bc%98%e5%8c%96-cXqnUdZeDD\">\u89e3\u91ca\u8ba1\u5212\u7684\u4f18\u5316<\/h2>\n<p>\u901a\u8fc7\u5206\u6790\u89e3\u91ca\u8ba1\u5212\uff0c\u53ef\u4ee5\u627e\u51fa\u67e5\u8be2\u7684\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u4f18\u5316\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u4f18\u5316\u6280\u5de7\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u5408\u9002\u7684\u7d22\u5f15\uff1a<\/strong>\u786e\u4fdd\u67e5\u8be2\u4f7f\u7528\u4e86\u5408\u9002\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u53ef\u4ee5\u901a\u8fc7\u5206\u6790\u89e3\u91ca\u8ba1\u5212\u4e2d\u7684\u7d22\u5f15\u9009\u62e9\u4fe1\u606f\u6765\u786e\u5b9a\u662f\u5426\u9700\u8981\u521b\u5efa\u65b0\u7684\u7d22\u5f15\u3002<\/li>\n<li><strong>\u907f\u514d\u5168\u8868\u626b\u63cf\uff1a<\/strong>\u5168\u8868\u626b\u63cf\u662f\u4e00\u79cd\u4f4e\u6548\u7684\u67e5\u8be2\u65b9\u5f0f\uff0c\u5e94\u5c3d\u91cf\u907f\u514d\u3002\u901a\u8fc7\u5206\u6790\u89e3\u91ca\u8ba1\u5212\u4e2d\u7684\u626b\u63cf\u6587\u6863\u6570\uff0c\u53ef\u4ee5\u5224\u65ad\u662f\u5426\u5b58\u5728\u5168\u8868\u626b\u63cf\u7684\u60c5\u51b5\u3002<\/li>\n<li><strong>\u8c03\u6574\u67e5\u8be2\u6761\u4ef6\uff1a<\/strong>\u4f18\u5316\u67e5\u8be2\u6761\u4ef6\u53ef\u4ee5\u51cf\u5c11\u67e5\u8be2\u7684\u6267\u884c\u65f6\u95f4\u3002\u53ef\u4ee5\u901a\u8fc7\u5206\u6790\u89e3\u91ca\u8ba1\u5212\u4e2d\u7684\u67e5\u8be2\u6761\u4ef6\u4fe1\u606f\u6765\u786e\u5b9a\u662f\u5426\u9700\u8981\u8c03\u6574\u67e5\u8be2\u6761\u4ef6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%80%bb%e7%bb%93-cXqnUdZeDD\">\u603b\u7ed3<\/h2>\n<p>\u89e3\u91ca\u8ba1\u5212\u662fMongoDB\u4e2d\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u548c\u6570\u636e\u5e93\u7ba1\u7406\u5458\u4f18\u5316\u67e5\u8be2\u6027\u80fd\u3002\u901a\u8fc7\u5206\u6790\u89e3\u91ca\u8ba1\u5212\uff0c\u53ef\u4ee5\u627e\u51fa\u67e5\u8be2\u7684\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u4f18\u5316\u3002\u4e86\u89e3\u89e3\u91ca\u8ba1\u5212\u7684\u751f\u6210\u65b9\u5f0f\u548c\u5173\u952e\u5b57\u6bb5\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u67e5\u8be2\u7684\u6267\u884c\u8fc7\u7a0b\u3002<\/p>\n<p>\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91\uff0c\u63d0\u4f9b\u9ad8\u6027\u80fd\u3001\u7a33\u5b9a\u53ef\u9760\u7684\u9999\u6e2f\u670d\u52a1\u5668\u3002\u70b9\u51fb<a href=\"https:\/\/idc.net\">\u8fd9\u91cc<\/a>\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u672f\u8bed - \u89e3\u91ca\u8ba1\u5212 MongoDB \u672f\u8bed - \u89e3\u91ca\u8ba1\u5212 \u5728MongoDB\u4e2d\uff0c\u89e3\u91ca\u8ba1\u5212\u662f\u4e00\u4e2a\u975e\u5e38 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7038],"tags":[],"class_list":["post-247373","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=247373"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247373\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}