{"id":21580,"date":"2024-01-02T11:50:21","date_gmt":"2024-01-02T11:50:21","guid":{"rendered":"https:\/\/server.hk\/blog\/21580\/"},"modified":"2024-11-14T10:30:25","modified_gmt":"2024-11-14T02:30:25","slug":"mongodb-glossary-update-operation","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21580\/","title":{"rendered":"MongoDB \u8a5e\u5f59\u8868 &#8211; \u66f4\u65b0\u64cd\u4f5c"},"content":{"rendered":"<h1 id=\"mongodb-glossary-update-operation-euSDmoKBmq\">MongoDB \u8a5e\u5f59\u8868 &#8211; \u66f4\u65b0\u64cd\u4f5c<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7684\u4e16\u754c\u4e2d\uff0cMongoDB \u56e0\u5176\u9748\u6d3b\u6027\u3001\u53ef\u64f4\u5c55\u6027\u53ca\u6613\u7528\u6027\u800c\u6210\u70ba\u4e86\u53d7\u6b61\u8fce\u7684\u9078\u64c7\u3002\u4f5c\u70ba\u4e00\u500b NoSQL \u8cc7\u6599\u5eab\uff0cMongoDB \u63d0\u4f9b\u4e86\u5ee3\u6cdb\u7684\u529f\u80fd\uff0c\u4f7f\u5176\u9069\u5408\u5404\u7a2e\u61c9\u7528\u7a0b\u5f0f\u3002\u7576\u4e2d\u7684\u4e00\u500b\u529f\u80fd\u662f\u66f4\u65b0\u64cd\u4f5c\uff0c\u5b83\u5141\u8a31\u7528\u6236\u4fee\u6539 MongoDB \u96c6\u5408\u4e2d\u7684\u73fe\u6709\u6587\u6a94\u3002<\/p>\n<h2 id=\"understanding-the-update-operation-euSDmoKBmq\">\u4e86\u89e3\u66f4\u65b0\u64cd\u4f5c<\/h2>\n<p>MongoDB \u7684\u66f4\u65b0\u64cd\u4f5c\u7528\u65bc\u4fee\u6539\u96c6\u5408\u4e2d\u7684\u4e00\u500b\u6216\u591a\u500b\u6587\u6a94\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u66f4\u65b0\u7279\u5b9a\u5b57\u6bb5\u6216\u70ba\u73fe\u6709\u6587\u6a94\u6dfb\u52a0\u65b0\u5b57\u6bb5\u3002\u66f4\u65b0\u64cd\u4f5c\u53ef\u4ee5\u91dd\u5c0d\u55ae\u500b\u6587\u6a94\u6216\u7b26\u5408\u6307\u5b9a\u689d\u4ef6\u7684\u591a\u500b\u6587\u6a94\u9032\u884c\u3002<\/p>\n<p>\u5728 MongoDB \u4e2d\u6709\u591a\u500b\u904b\u7b97\u7b26\u53ef\u7528\u4f86\u57f7\u884c\u4e0d\u540c\u985e\u578b\u7684\u66f4\u65b0\uff1a<\/p>\n<ul>\n<li><code>$set<\/code>: \u8a2d\u5b9a\u6587\u6a94\u4e2d\u67d0\u500b\u5b57\u6bb5\u7684\u503c\u3002<\/li>\n<li><code>$unset<\/code>: \u5f9e\u6587\u6a94\u4e2d\u79fb\u9664\u67d0\u500b\u5b57\u6bb5\u3002<\/li>\n<li><code>$inc<\/code>: \u589e\u52a0\u67d0\u500b\u6578\u503c\u5b57\u6bb5\u7684\u503c\u3002<\/li>\n<li><code>$push<\/code>: \u5411\u6578\u7d44\u5b57\u6bb5\u8ffd\u52a0\u4e00\u500b\u5143\u7d20\u3002<\/li>\n<li><code>$pull<\/code>: \u5f9e\u6578\u7d44\u5b57\u6bb5\u4e2d\u79fb\u9664\u5143\u7d20\u3002<\/li>\n<li><code>$addToSet<\/code>: \u50c5\u5728\u6578\u7d44\u5b57\u6bb5\u4e2d\u4e0d\u5b58\u5728\u8a72\u5143\u7d20\u6642\uff0c\u5c07\u5143\u7d20\u6dfb\u52a0\u5230\u6578\u7d44\u4e2d\u3002<\/li>\n<li><code>$rename<\/code>: \u91cd\u547d\u540d\u6587\u6a94\u4e2d\u7684\u4e00\u500b\u5b57\u6bb5\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u904b\u7b97\u7b26\u53ef\u4ee5\u55ae\u7368\u4f7f\u7528\u6216\u7d50\u5408\u4f7f\u7528\uff0c\u4ee5\u5728\u6587\u6a94\u4e0a\u57f7\u884c\u8907\u96dc\u7684\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"examples-of-update-operations-euSDmoKBmq\">\u66f4\u65b0\u64cd\u4f5c\u7bc4\u4f8b<\/h2>\n<p>\u8b93\u6211\u5011\u8003\u616e\u4e00\u500b\u540d\u70ba\u300cusers\u300d\u7684\u96c6\u5408\uff0c\u7528\u4f86\u5b58\u5132\u7528\u6236\u7684\u8cc7\u8a0a\uff1a<\/p>\n<pre><code>db.users.insertOne({\r\n  name: \"John Doe\",\r\n  age: 30,\r\n  email: \"john@example.com\"\r\n});\r\n<\/code><\/pre>\n<p>\u8981\u66f4\u65b0\u7528\u6236\u7684\u5e74\u9f61\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>$set<\/code> \u904b\u7b97\u7b26\uff1a<\/p>\n<pre><code>db.users.updateOne(\r\n  { name: \"John Doe\" },\r\n  { $set: { age: 31 } }\r\n);\r\n<\/code><\/pre>\n<p>\u6b64\u67e5\u8a62\u6703\u5c07\u540d\u70ba\u300cJohn Doe\u300d\u7684\u7528\u6236\u7684\u5e74\u9f61\u66f4\u65b0\u70ba 31\u3002<\/p>\n<p>\u6211\u5011\u4e5f\u53ef\u4ee5\u4f7f\u7528 <code>$inc<\/code> \u904b\u7b97\u7b26\u4f86\u5c07\u5e74\u9f61\u589e\u52a0\u4e00\u500b\u7279\u5b9a\u7684\u503c\uff1a<\/p>\n<pre><code>db.users.updateOne(\r\n  { name: \"John Doe\" },\r\n  { $inc: { age: 1 } }\r\n);\r\n<\/code><\/pre>\n<p>\u6b64\u67e5\u8a62\u6703\u5c07\u540d\u70ba\u300cJohn Doe\u300d\u7684\u7528\u6236\u7684\u5e74\u9f61\u589e\u52a0 1\u3002<\/p>\n<h2 id=\"conclusion-euSDmoKBmq\">\u7d50\u8ad6<\/h2>\n<p>MongoDB \u7684\u66f4\u65b0\u64cd\u4f5c\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5f37\u5927\u7684\u65b9\u5f0f\u4f86\u4fee\u6539\u96c6\u5408\u4e2d\u7684\u6587\u6a94\u3002\u901a\u904e\u591a\u7a2e\u904b\u7b97\u7b26\uff0c\u7528\u6236\u53ef\u4ee5\u57f7\u884c\u5404\u985e\u578b\u7684\u66f4\u65b0\uff0c\u4ee5\u6eff\u8db3\u7279\u5b9a\u9700\u6c42\u3002\u7121\u8ad6\u662f\u66f4\u65b0\u55ae\u500b\u5b57\u6bb5\u9084\u662f\u9032\u884c\u8907\u96dc\u7684\u66f4\u65b0\uff0cMongoDB \u7684\u66f4\u65b0\u64cd\u4f5c\u90fd\u63d0\u4f9b\u4e86\u73fe\u4ee3\u61c9\u7528\u7a0b\u5f0f\u6240\u9700\u7684\u9748\u6d3b\u6027\u548c\u529f\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc MongoDB \u53ca\u5176\u529f\u80fd\u7684\u8cc7\u8a0a\uff0c\u8acb\u8003\u616e\u63a2\u7d22 <a href=\"https:\/\/server.hk\">Hong Kong VPS Hosting<\/a>\u3002\u900f\u904e\u5176\u53ef\u9760\u7684 VPS \u89e3\u6c7a\u65b9\u6848\uff0c\u60a8\u53ef\u4ee5\u5728\u5b89\u5168\u4e14\u53ef\u64f4\u5c55\u7684\u74b0\u5883\u4e2d\u9ad4\u9a57 MongoDB \u7684\u5f37\u5927\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u8a5e\u5f59\u8868 &#038;#82&#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-21580","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21580","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=21580"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21580\/revisions"}],"predecessor-version":[{"id":23862,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21580\/revisions\/23862"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}