{"id":247406,"date":"2024-01-02T21:48:30","date_gmt":"2024-01-02T13:48:30","guid":{"rendered":"https:\/\/www.idc.net\/help\/247406\/"},"modified":"2024-01-02T21:48:30","modified_gmt":"2024-01-02T13:48:30","slug":"mongodb-%e6%9c%af%e8%af%ad-%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247406\/","title":{"rendered":"MongoDB \u672f\u8bed &#8211; \u66f4\u65b0\u64cd\u4f5c"},"content":{"rendered":"<p><title id=\"mongodb-%e6%9c%af%e8%af%ad-%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c-MGZCUIhyRY\">MongoDB \u672f\u8bed - \u66f4\u65b0\u64cd\u4f5c<\/title><\/p>\n<h1 id=\"mongodb-%e6%9c%af%e8%af%ad-%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c-MGZCUIhyRY\">MongoDB \u672f\u8bed - \u66f4\u65b0\u64cd\u4f5c<\/h1>\n<p>MongoDB \u662f\u4e00\u79cd\u6d41\u884c\u7684\u5f00\u6e90\u6587\u6863\u6570\u636e\u5e93\uff0c\u88ab\u5e7f\u6cdb\u7528\u4e8e\u6784\u5efa\u73b0\u4ee3\u5e94\u7528\u7a0b\u5e8f\u3002\u5728 MongoDB \u4e2d\uff0c\u66f4\u65b0\u64cd\u4f5c\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u7528\u4e8e\u4fee\u6539\u6587\u6863\u4e2d\u7684\u6570\u636e\u3002\u672c\u6587\u5c06\u4ecb\u7ecd MongoDB \u4e2d\u7684\u66f4\u65b0\u64cd\u4f5c\u7684\u672f\u8bed\u548c\u7528\u6cd5\u3002<\/p>\n<h2 id=\"%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%af%ad%e6%b3%95-MGZCUIhyRY\">\u66f4\u65b0\u64cd\u4f5c\u7684\u57fa\u672c\u8bed\u6cd5<\/h2>\n<p>\u5728 MongoDB \u4e2d\uff0c\u66f4\u65b0\u64cd\u4f5c\u4f7f\u7528 <code>update()<\/code> \u65b9\u6cd5\u6765\u6267\u884c\u3002\u5176\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>db.collection.update(\n   &lt;query&gt;,\n   &lt;update&gt;,\n   {\n     &lt;upsert&gt;: &lt;boolean&gt;,\n     &lt;multi&gt;: &lt;boolean&gt;\n   }\n)\n<\/code><\/pre>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li><code>db.collection<\/code> \u662f\u8981\u66f4\u65b0\u7684\u96c6\u5408\u540d\u79f0\u3002<\/li>\n<li><code>&lt;query&gt;<\/code> \u662f\u4e00\u4e2a\u67e5\u8be2\u6761\u4ef6\uff0c\u7528\u4e8e\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u6587\u6863\u3002<\/li>\n<li><code>&lt;update&gt;<\/code> \u662f\u4e00\u4e2a\u66f4\u65b0\u64cd\u4f5c\u7b26\uff0c\u7528\u4e8e\u6307\u5b9a\u8981\u5bf9\u6587\u6863\u8fdb\u884c\u7684\u66f4\u65b0\u64cd\u4f5c\u3002<\/li>\n<li><code>&lt;upsert&gt;<\/code> \u662f\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u8868\u793a\u5982\u679c\u627e\u4e0d\u5230\u5339\u914d\u7684\u6587\u6863\u65f6\u662f\u5426\u63d2\u5165\u65b0\u6587\u6863\u3002<\/li>\n<li><code>&lt;multi&gt;<\/code> \u662f\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u8868\u793a\u662f\u5426\u66f4\u65b0\u591a\u4e2a\u5339\u914d\u7684\u6587\u6863\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c%e7%9a%84%e5%b8%b8%e7%94%a8%e6%93%8d%e4%bd%9c%e7%ac%a6-MGZCUIhyRY\">\u66f4\u65b0\u64cd\u4f5c\u7684\u5e38\u7528\u64cd\u4f5c\u7b26<\/h2>\n<p>MongoDB \u63d0\u4f9b\u4e86\u591a\u79cd\u66f4\u65b0\u64cd\u4f5c\u7b26\uff0c\u7528\u4e8e\u6267\u884c\u4e0d\u540c\u7c7b\u578b\u7684\u66f4\u65b0\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u66f4\u65b0\u64cd\u4f5c\u7b26\uff1a<\/p>\n<h3 id=\"set-%e6%93%8d%e4%bd%9c%e7%ac%a6-MGZCUIhyRY\">$set \u64cd\u4f5c\u7b26<\/h3>\n<p>$set \u64cd\u4f5c\u7b26\u7528\u4e8e\u8bbe\u7f6e\u6307\u5b9a\u5b57\u6bb5\u7684\u503c\u3002\u4f8b\u5982\uff0c\u8981\u5c06\u6587\u6863\u4e2d\u7684 \"name\" \u5b57\u6bb5\u8bbe\u7f6e\u4e3a \"John\"\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u66f4\u65b0\u64cd\u4f5c\uff1a<\/p>\n<pre><code>db.collection.update(\n   { _id: ObjectId(\"1234567890\") },\n   { $set: { name: \"John\" } }\n)\n<\/code><\/pre>\n<h3 id=\"unset-%e6%93%8d%e4%bd%9c%e7%ac%a6-MGZCUIhyRY\">$unset \u64cd\u4f5c\u7b26<\/h3>\n<p>$unset \u64cd\u4f5c\u7b26\u7528\u4e8e\u5220\u9664\u6307\u5b9a\u5b57\u6bb5\u3002\u4f8b\u5982\uff0c\u8981\u5220\u9664\u6587\u6863\u4e2d\u7684 \"age\" \u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u66f4\u65b0\u64cd\u4f5c\uff1a<\/p>\n<pre><code>db.collection.update(\n   { _id: ObjectId(\"1234567890\") },\n   { $unset: { age: \"\" } }\n)\n<\/code><\/pre>\n<h3 id=\"inc-%e6%93%8d%e4%bd%9c%e7%ac%a6-MGZCUIhyRY\">$inc \u64cd\u4f5c\u7b26<\/h3>\n<p>$inc \u64cd\u4f5c\u7b26\u7528\u4e8e\u589e\u52a0\u6216\u51cf\u5c11\u6307\u5b9a\u5b57\u6bb5\u7684\u503c\u3002\u4f8b\u5982\uff0c\u8981\u5c06\u6587\u6863\u4e2d\u7684 \"count\" \u5b57\u6bb5\u589e\u52a0 1\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u66f4\u65b0\u64cd\u4f5c\uff1a<\/p>\n<pre><code>db.collection.update(\n   { _id: ObjectId(\"1234567890\") },\n   { $inc: { count: 1 } }\n)\n<\/code><\/pre>\n<h2 id=\"%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c%e7%9a%84%e5%85%b6%e4%bb%96%e9%80%89%e9%a1%b9-MGZCUIhyRY\">\u66f4\u65b0\u64cd\u4f5c\u7684\u5176\u4ed6\u9009\u9879<\/h2>\n<p>\u9664\u4e86\u66f4\u65b0\u64cd\u4f5c\u7b26\u5916\uff0cMongoDB \u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u4e00\u4e9b\u9009\u9879\uff0c\u7528\u4e8e\u63a7\u5236\u66f4\u65b0\u64cd\u4f5c\u7684\u884c\u4e3a\u3002<\/p>\n<h3 id=\"upsert-%e9%80%89%e9%a1%b9-MGZCUIhyRY\">upsert \u9009\u9879<\/h3>\n<p>upsert \u9009\u9879\u7528\u4e8e\u5728\u627e\u4e0d\u5230\u5339\u914d\u6587\u6863\u65f6\u63d2\u5165\u65b0\u6587\u6863\u3002\u5982\u679c\u5c06 upsert \u8bbe\u7f6e\u4e3a true\uff0c\u5219\u5728\u627e\u4e0d\u5230\u5339\u914d\u6587\u6863\u65f6\uff0c\u5c06\u4f1a\u63d2\u5165\u4e00\u4e2a\u65b0\u6587\u6863\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>db.collection.update(\n   { name: \"John\" },\n   { $set: { age: 30 } },\n   { upsert: true }\n)\n<\/code><\/pre>\n<h3 id=\"multi-%e9%80%89%e9%a1%b9-MGZCUIhyRY\">multi \u9009\u9879<\/h3>\n<p>multi \u9009\u9879\u7528\u4e8e\u66f4\u65b0\u591a\u4e2a\u5339\u914d\u7684\u6587\u6863\u3002\u5982\u679c\u5c06 multi \u8bbe\u7f6e\u4e3a true\uff0c\u5219\u4f1a\u66f4\u65b0\u6240\u6709\u5339\u914d\u7684\u6587\u6863\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>db.collection.update(\n   { name: \"John\" },\n   { $set: { age: 30 } },\n   { multi: true }\n)\n<\/code><\/pre>\n<h2 id=\"%e6%80%bb%e7%bb%93-MGZCUIhyRY\">\u603b\u7ed3<\/h2>\n<p>\u672c\u6587\u4ecb\u7ecd\u4e86 MongoDB \u4e2d\u7684\u66f4\u65b0\u64cd\u4f5c\u7684\u672f\u8bed\u548c\u7528\u6cd5\u3002\u901a\u8fc7\u4f7f\u7528 update() \u65b9\u6cd5\u548c\u4e0d\u540c\u7684\u66f4\u65b0\u64cd\u4f5c\u7b26\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u4fee\u6539\u6587\u6863\u4e2d\u7684\u6570\u636e\u3002\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e MongoDB \u66f4\u65b0\u64cd\u4f5c\u7684\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u65b9\u7f51\u7ad9\u3002<\/p>\n<h3 id=\"%e9%a6%99%e6%b8%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e9%a6%96%e9%80%89%e5%90%8e%e6%b5%aa%e4%ba%91-MGZCUIhyRY\">\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91<\/h3>\n<p>\u540e\u6d6a\u4e91\u662f\u4e00\u5bb6\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u7684\u4e91\u8ba1\u7b97\u516c\u53f8\u3002\u6211\u4eec\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u53ef\u6ee1\u8db3\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002\u65e0\u8bba\u60a8\u662f\u4e2a\u4eba\u7528\u6237\u8fd8\u662f\u4f01\u4e1a\u7528\u6237\uff0c\u6211\u4eec\u90fd\u80fd\u4e3a\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u9999\u6e2f\u670d\u52a1\u5668\u89e3\u51b3\u65b9\u6848\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><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u672f\u8bed - \u66f4\u65b0\u64cd\u4f5c MongoDB \u672f\u8bed - \u66f4\u65b0\u64cd\u4f5c MongoDB \u662f\u4e00\u79cd\u6d41\u884c\u7684\u5f00\u6e90\u6587\u6863\u6570 [&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-247406","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247406","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=247406"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247406\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}