{"id":247436,"date":"2024-01-02T22:18:24","date_gmt":"2024-01-02T14:18:24","guid":{"rendered":"https:\/\/www.idc.net\/help\/247436\/"},"modified":"2024-01-02T22:18:24","modified_gmt":"2024-01-02T14:18:24","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8dmongodb%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-14-%e7%b1%bb%e5%9e%8b%e4%b8%8d%e5%8c%b9%e9%85%8d","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247436\/","title":{"rendered":"\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 &#8211; 14 &#8211; \u7c7b\u578b\u4e0d\u5339\u914d"},"content":{"rendered":"<p><title id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8dmongodb%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-14-%e7%b1%bb%e5%9e%8b%e4%b8%8d%e5%8c%b9%e9%85%8d-MUffUsMroz\">\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d<\/title><\/p>\n<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%a4%8dmongodb%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-14-%e7%b1%bb%e5%9e%8b%e4%b8%8d%e5%8c%b9%e9%85%8d-MUffUsMroz\">\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d<\/h1>\n<p>MongoDB\u662f\u4e00\u79cd\u6d41\u884c\u7684\u5f00\u6e90\u6587\u6863\u6570\u636e\u5e93\uff0c\u88ab\u5e7f\u6cdb\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u548c\u9879\u76ee\u4e2d\u3002\u7136\u800c\uff0c\u5f53\u4f7f\u7528MongoDB\u65f6\uff0c\u60a8\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u9519\u8bef\u4ee3\u7801\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecd\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d\u3002<\/p>\n<h2 id=\"%e9%94%99%e8%af%af%e4%bb%a3%e7%a0%81-14-%e7%b1%bb%e5%9e%8b%e4%b8%8d%e5%8c%b9%e9%85%8d-MUffUsMroz\">\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d<\/h2>\n<p>\u5f53\u60a8\u5728MongoDB\u4e2d\u6267\u884c\u67e5\u8be2\u6216\u66f4\u65b0\u64cd\u4f5c\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d\u3002\u8fd9\u901a\u5e38\u662f\u7531\u4e8e\u6570\u636e\u7c7b\u578b\u4e0d\u5339\u914d\u5bfc\u81f4\u7684\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u80fd\u5c1d\u8bd5\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u503c\u63d2\u5165\u5230\u4e00\u4e2a\u6574\u6570\u5b57\u6bb5\u4e2d\uff0c\u6216\u8005\u5c1d\u8bd5\u5c06\u4e00\u4e2a\u65e5\u671f\u5bf9\u8c61\u63d2\u5165\u5230\u4e00\u4e2a\u5b57\u7b26\u4e32\u5b57\u6bb5\u4e2d\u3002<\/p>\n<p>\u8981\u4fee\u590d\u8fd9\u4e2a\u9519\u8bef\uff0c\u60a8\u9700\u8981\u786e\u4fdd\u63d2\u5165\u6216\u66f4\u65b0\u7684\u6570\u636e\u7c7b\u578b\u4e0e\u5b57\u6bb5\u7684\u9884\u671f\u7c7b\u578b\u5339\u914d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e6%a3%80%e6%9f%a5%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b-MUffUsMroz\">1. \u68c0\u67e5\u6570\u636e\u7c7b\u578b<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u68c0\u67e5\u8981\u63d2\u5165\u6216\u66f4\u65b0\u7684\u6570\u636e\u7684\u7c7b\u578b\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528MongoDB\u7684\u6570\u636e\u7c7b\u578b\u64cd\u4f5c\u7b26\uff08$type\uff09\u6765\u68c0\u67e5\u5b57\u6bb5\u7684\u7c7b\u578b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u68c0\u67e5\u4e00\u4e2a\u5b57\u6bb5\u662f\u5426\u4e3a\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/p>\n<pre><code>db.collection.find({ field: { $type: \"string\" } })\n<\/code><\/pre>\n<p>\u786e\u4fdd\u60a8\u7684\u6570\u636e\u7c7b\u578b\u4e0e\u5b57\u6bb5\u7684\u9884\u671f\u7c7b\u578b\u5339\u914d\u3002<\/p>\n<h3 id=\"2-%e8%bd%ac%e6%8d%a2%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b-MUffUsMroz\">2. \u8f6c\u6362\u6570\u636e\u7c7b\u578b<\/h3>\n<p>\u5982\u679c\u60a8\u53d1\u73b0\u6570\u636e\u7c7b\u578b\u4e0d\u5339\u914d\uff0c\u60a8\u53ef\u4ee5\u5c1d\u8bd5\u5c06\u6570\u636e\u8f6c\u6362\u4e3a\u6b63\u786e\u7684\u7c7b\u578b\u3002MongoDB\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u64cd\u4f5c\u7b26\uff0c\u4f8b\u5982$toInt\u3001$toString\u7b49\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u64cd\u4f5c\u7b26\u6765\u5c06\u6570\u636e\u8f6c\u6362\u4e3a\u6b63\u786e\u7684\u7c7b\u578b\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.updateMany({}, [{ $set: { field: { $toInt: \"$field\" } } }])\n<\/code><\/pre>\n<p>\u8fd9\u5c06\u5c06\u5b57\u6bb5\u7684\u503c\u8f6c\u6362\u4e3a\u6574\u6570\u7c7b\u578b\u3002<\/p>\n<h3 id=\"3-%e6%9b%b4%e6%96%b0%e6%a8%a1%e5%bc%8f-MUffUsMroz\">3. \u66f4\u65b0\u6a21\u5f0f<\/h3>\n<p>\u5982\u679c\u60a8\u7684\u6570\u636e\u7c7b\u578b\u4e0e\u5b57\u6bb5\u7684\u9884\u671f\u7c7b\u578b\u4e0d\u5339\u914d\uff0c\u5e76\u4e14\u60a8\u65e0\u6cd5\u66f4\u6539\u6570\u636e\u7c7b\u578b\u6216\u8f6c\u6362\u6570\u636e\u7c7b\u578b\uff0c\u60a8\u53ef\u4ee5\u8003\u8651\u66f4\u65b0\u6a21\u5f0f\u3002\u66f4\u65b0\u6a21\u5f0f\u662f\u6307\u5728\u66f4\u65b0\u64cd\u4f5c\u4e2d\u4f7f\u7528$set\u64cd\u4f5c\u7b26\u6765\u8bbe\u7f6e\u5b57\u6bb5\u7684\u503c\uff0c\u5e76\u6307\u5b9a\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code>db.collection.updateMany({}, [{ $set: { field: { $dateFromString: { dateString: \"$field\" } } } }])\n<\/code><\/pre>\n<p>\u8fd9\u5c06\u5c06\u5b57\u6bb5\u7684\u503c\u8f6c\u6362\u4e3a\u65e5\u671f\u7c7b\u578b\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-MUffUsMroz\">\u603b\u7ed3<\/h2>\n<p>\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d\u9700\u8981\u786e\u4fdd\u63d2\u5165\u6216\u66f4\u65b0\u7684\u6570\u636e\u7c7b\u578b\u4e0e\u5b57\u6bb5\u7684\u9884\u671f\u7c7b\u578b\u5339\u914d\u3002\u60a8\u53ef\u4ee5\u68c0\u67e5\u6570\u636e\u7c7b\u578b\uff0c\u8f6c\u6362\u6570\u636e\u7c7b\u578b\u6216\u4f7f\u7528\u66f4\u65b0\u6a21\u5f0f\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u6b65\u9aa4\uff0c\u60a8\u53ef\u4ee5\u6210\u529f\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d\u3002<\/p>\n<p>\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91\uff0c\u63d0\u4f9b\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u89e3\u51b3\u65b9\u6848\u3002\u60a8\u53ef\u4ee5\u8bbf\u95ee<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7684\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d\u5339\u914d \u5982\u4f55\u4fee\u590dMongoDB\u9519\u8bef\u4ee3\u7801 - 14 - \u7c7b\u578b\u4e0d [&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-247436","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247436","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=247436"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247436\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}