{"id":247327,"date":"2024-01-02T20:29:21","date_gmt":"2024-01-02T12:29:21","guid":{"rendered":"https:\/\/www.idc.net\/help\/247327\/"},"modified":"2024-01-02T20:29:21","modified_gmt":"2024-01-02T12:29:21","slug":"mongodb-%e6%9c%af%e8%af%ad-%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247327\/","title":{"rendered":"MongoDB \u672f\u8bed &#8211; \u5b57\u6bb5"},"content":{"rendered":"<p><title>MongoDB \u672f\u8bed - \u5b57\u6bb5<\/title><\/p>\n<h1 id=\"%e5%ad%97%e6%ae%b5-faDfxIXKmM\">\u5b57\u6bb5<\/h1>\n<p>\u5728MongoDB\u4e2d\uff0c\u5b57\u6bb5\u662f\u6587\u6863\u7684\u57fa\u672c\u7ec4\u6210\u90e8\u5206\u3002\u6bcf\u4e2a\u6587\u6863\u90fd\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u6bb5\u7ec4\u6210\uff0c\u6bcf\u4e2a\u5b57\u6bb5\u90fd\u5305\u542b\u4e00\u4e2a\u952e\u503c\u5bf9\u3002<\/p>\n<h2 id=\"%e5%ad%97%e6%ae%b5%e7%9a%84%e5%91%bd%e5%90%8d%e8%a7%84%e5%88%99-faDfxIXKmM\">\u5b57\u6bb5\u7684\u547d\u540d\u89c4\u5219<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u5b57\u6bb5\u7684\u547d\u540d\u89c4\u5219\u662f\u975e\u5e38\u7075\u6d3b\u7684\u3002\u5b57\u6bb5\u7684\u540d\u79f0\u53ef\u4ee5\u662f\u4efb\u4f55\u6709\u6548\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u5305\u542b\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u548c\u70b9\u53f7\u3002\u5b57\u6bb5\u540d\u79f0\u533a\u5206\u5927\u5c0f\u5199\u3002<\/p>\n<p>\u5b57\u6bb5\u540d\u79f0\u4e0d\u80fd\u4ee5\u7f8e\u5143\u7b26\u53f7\uff08$\uff09\u5f00\u5934\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u540d\u79f0\u88ab\u4fdd\u7559\u7528\u4e8eMongoDB\u5185\u90e8\u4f7f\u7528\u3002<\/p>\n<h2 id=\"%e5%ad%97%e6%ae%b5%e7%9a%84%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b-faDfxIXKmM\">\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b<\/h2>\n<p>MongoDB\u652f\u6301\u591a\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u4ee5\u7528\u4e8e\u5b9a\u4e49\u5b57\u6bb5\u7684\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li><strong>String<\/strong> - \u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u7528\u4e8e\u5b58\u50a8\u6587\u672c\u6570\u636e\u3002<\/li>\n<li><strong>Number<\/strong> - \u6570\u5b57\u7c7b\u578b\uff0c\u7528\u4e8e\u5b58\u50a8\u6570\u503c\u6570\u636e\u3002<\/li>\n<li><strong>Boolean<\/strong> - \u5e03\u5c14\u7c7b\u578b\uff0c\u7528\u4e8e\u5b58\u50a8\u771f\u503c\uff08true\u6216false\uff09\u3002<\/li>\n<li><strong>Array<\/strong> - \u6570\u7ec4\u7c7b\u578b\uff0c\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u503c\u3002<\/li>\n<li><strong>Object<\/strong> - \u5bf9\u8c61\u7c7b\u578b\uff0c\u7528\u4e8e\u5b58\u50a8\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784\u3002<\/li>\n<li><strong>Null<\/strong> - \u7a7a\u503c\u7c7b\u578b\uff0c\u7528\u4e8e\u8868\u793a\u7a7a\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%ad%97%e6%ae%b5%e7%9a%84%e7%b4%a2%e5%bc%95-faDfxIXKmM\">\u5b57\u6bb5\u7684\u7d22\u5f15<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u53ef\u4ee5\u4e3a\u5b57\u6bb5\u521b\u5efa\u7d22\u5f15\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u7d22\u5f15\u53ef\u4ee5\u6839\u636e\u5b57\u6bb5\u7684\u503c\u5feb\u901f\u5b9a\u4f4d\u6587\u6863\u3002<\/p>\n<p>\u8981\u521b\u5efa\u5b57\u6bb5\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528MongoDB\u7684createIndex\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.createIndex({ field: 1 });\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u793a\u4f8b\u5c06\u4e3a\u540d\u4e3a\"collection\"\u7684\u96c6\u5408\u4e2d\u7684\"field\"\u5b57\u6bb5\u521b\u5efa\u5347\u5e8f\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e5%ad%97%e6%ae%b5%e7%9a%84%e6%9f%a5%e8%af%a2-faDfxIXKmM\">\u5b57\u6bb5\u7684\u67e5\u8be2<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528find\u65b9\u6cd5\u6765\u67e5\u8be2\u5305\u542b\u7279\u5b9a\u5b57\u6bb5\u503c\u7684\u6587\u6863\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.find({ field: value });\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u793a\u4f8b\u5c06\u8fd4\u56de\u5305\u542b\u6307\u5b9a\u5b57\u6bb5\u503c\u7684\u6587\u6863\u3002<\/p>\n<h2 id=\"%e5%ad%97%e6%ae%b5%e7%9a%84%e6%9b%b4%e6%96%b0-faDfxIXKmM\">\u5b57\u6bb5\u7684\u66f4\u65b0<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528update\u65b9\u6cd5\u6765\u66f4\u65b0\u6587\u6863\u4e2d\u7684\u5b57\u6bb5\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.update({ field: value }, { $set: { field: newValue } });\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u793a\u4f8b\u5c06\u66f4\u65b0\u5305\u542b\u6307\u5b9a\u5b57\u6bb5\u503c\u7684\u6587\u6863\u4e2d\u7684\u5b57\u6bb5\u503c\u3002<\/p>\n<h2 id=\"%e5%ad%97%e6%ae%b5%e7%9a%84%e5%88%a0%e9%99%a4-faDfxIXKmM\">\u5b57\u6bb5\u7684\u5220\u9664<\/h2>\n<p>\u5728MongoDB\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528update\u65b9\u6cd5\u6765\u5220\u9664\u6587\u6863\u4e2d\u7684\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.update({ field: value }, { $unset: { field: \"\" } });\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u793a\u4f8b\u5c06\u5220\u9664\u5305\u542b\u6307\u5b9a\u5b57\u6bb5\u503c\u7684\u6587\u6863\u4e2d\u7684\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-faDfxIXKmM\">\u603b\u7ed3<\/h2>\n<p>\u5b57\u6bb5\u662fMongoDB\u4e2d\u6587\u6863\u7684\u57fa\u672c\u7ec4\u6210\u90e8\u5206\u3002\u5b57\u6bb5\u5177\u6709\u7075\u6d3b\u7684\u547d\u540d\u89c4\u5219\u548c\u591a\u79cd\u6570\u636e\u7c7b\u578b\u3002\u53ef\u4ee5\u4e3a\u5b57\u6bb5\u521b\u5efa\u7d22\u5f15\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528find\u65b9\u6cd5\u67e5\u8be2\u548cupdate\u65b9\u6cd5\u66f4\u65b0\u548c\u5220\u9664\u5b57\u6bb5\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u4e00\u4e2a\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u670d\u52a1\u63d0\u4f9b\u5546\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002\u6211\u4eec\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7b49\u591a\u79cd\u4ea7\u54c1\u3002\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u7f51\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff1a<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u672f\u8bed - \u5b57\u6bb5 \u5b57\u6bb5 \u5728MongoDB\u4e2d\uff0c\u5b57\u6bb5\u662f\u6587\u6863\u7684\u57fa\u672c\u7ec4\u6210\u90e8\u5206\u3002\u6bcf\u4e2a\u6587\u6863\u90fd\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u6bb5 [&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-247327","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247327","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=247327"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247327\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}