{"id":63798,"date":"2024-10-14T02:34:16","date_gmt":"2024-10-13T18:34:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/63798\/"},"modified":"2024-10-14T02:34:16","modified_gmt":"2024-10-13T18:34:16","slug":"mongodb%e8%a1%93%e8%aa%9e-%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/63798\/","title":{"rendered":"MongoDB\u8853\u8a9e – \u6578\u64da\u5eab"},"content":{"rendered":"

MongoDB\u8853\u8a9e – \u6578\u64da\u5eab<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u9078\u64c7\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u81f3\u95dc\u91cd\u8981\u3002MongoDB\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684NoSQL\u6578\u64da\u5eab\uff0c\u56e0\u5176\u9748\u6d3b\u6027\u548c\u9ad8\u6548\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMongoDB\u7684\u57fa\u672c\u8853\u8a9e\u53ca\u5176\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n

\u4ec0\u9ebc\u662fMongoDB\uff1f<\/h2>\n

MongoDB\u662f\u4e00\u7a2e\u57fa\u65bc\u6587\u6a94\u7684NoSQL\u6578\u64da\u5eab\uff0c\u4f7f\u7528JSON\u6a23\u5f0f\u7684\u6587\u6a94\u4f86\u5b58\u5132\u6578\u64da\u3002\u9019\u7a2e\u7d50\u69cb\u4f7f\u5f97\u6578\u64da\u7684\u5b58\u5132\u548c\u6aa2\u7d22\u66f4\u52a0\u9748\u6d3b\uff0c\u7279\u5225\u9069\u5408\u8655\u7406\u975e\u7d50\u69cb\u5316\u6578\u64da\u3002MongoDB\u7684\u8a2d\u8a08\u7406\u5ff5\u662f\u70ba\u4e86\u61c9\u5c0d\u5927\u6578\u64da\u548c\u9ad8\u4e26\u767c\u7684\u9700\u6c42\uff0c\u4e26\u63d0\u4f9b\u9ad8\u53ef\u7528\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n

MongoDB\u7684\u57fa\u672c\u8853\u8a9e<\/h2>\n

1. \u6587\u6a94\uff08Document\uff09<\/h3>\n

\u5728MongoDB\u4e2d\uff0c\u6578\u64da\u4ee5\u6587\u6a94\u7684\u5f62\u5f0f\u5b58\u5132\u3002\u6bcf\u500b\u6587\u6a94\u90fd\u662f\u4e00\u500b\u9375\u503c\u5c0d\u7684\u96c6\u5408\uff0c\u985e\u4f3c\u65bcJSON\u683c\u5f0f\u3002\u6587\u6a94\u7684\u9748\u6d3b\u6027\u4f7f\u5f97\u4e0d\u540c\u7684\u6587\u6a94\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u7d50\u69cb\u3002<\/p>\n

{\n  \"name\": \"Alice\",\n  \"age\": 30,\n  \"city\": \"Hong Kong\"\n}<\/code><\/pre>\n
2. \u96c6\u5408\uff08Collection\uff09<\/h3>\n
\u96c6\u5408\u662fMongoDB\u4e2d\u5b58\u5132\u6587\u6a94\u7684\u5bb9\u5668\u3002\u6bcf\u500b\u96c6\u5408\u53ef\u4ee5\u5305\u542b\u591a\u500b\u6587\u6a94\uff0c\u4e26\u4e14\u4e0d\u9700\u8981\u4e8b\u5148\u5b9a\u7fa9\u7d50\u69cb\u3002\u9019\u4f7f\u5f97\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u96a8\u6642\u6dfb\u52a0\u6216\u4fee\u6539\u6587\u6a94\u3002<\/p>\n
3. \u6578\u64da\u5eab\uff08Database\uff09<\/h3>\n
\u6578\u64da\u5eab\u662fMongoDB\u7684\u6700\u9ad8\u5c64\u7d1a\u7d50\u69cb\uff0c\u5305\u542b\u591a\u500b\u96c6\u5408\u3002\u6bcf\u500bMongoDB\u5be6\u4f8b\u53ef\u4ee5\u64c1\u6709\u591a\u500b\u6578\u64da\u5eab\uff0c\u9019\u4f7f\u5f97\u6578\u64da\u7684\u7d44\u7e54\u548c\u7ba1\u7406\u66f4\u52a0\u9748\u6d3b\u3002<\/p>\n
4. \u67e5\u8a62\uff08Query\uff09<\/h3>\n
MongoDB\u4f7f\u7528\u4e00\u7a2e\u7279\u5b9a\u7684\u67e5\u8a62\u8a9e\u8a00\u4f86\u6aa2\u7d22\u6578\u64da\u3002\u67e5\u8a62\u53ef\u4ee5\u6839\u64da\u6587\u6a94\u4e2d\u7684\u5b57\u6bb5\u9032\u884c\u7be9\u9078\uff0c\u4e26\u652f\u6301\u591a\u7a2e\u64cd\u4f5c\u7b26\uff0c\u5982$gt\uff08\u5927\u65bc\uff09\u3001$lt\uff08\u5c0f\u65bc\uff09\u7b49\u3002<\/p>\n
db.collection.find({ \"age\": { \"$gt\": 25 } })<\/code><\/pre>\n
5. \u7d22\u5f15\uff08Index\uff09<\/h3>\n
\u7d22\u5f15\u662f\u7528\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u6578\u64da\u7d50\u69cb\u3002MongoDB\u652f\u6301\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u5305\u62ec\u55ae\u5b57\u6bb5\u7d22\u5f15\u3001\u8907\u5408\u7d22\u5f15\u548c\u5730\u7406\u7a7a\u9593\u7d22\u5f15\u7b49\u3002\u9069\u7576\u7684\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n
6. \u805a\u5408\uff08Aggregation\uff09<\/h3>\n
\u805a\u5408\u662fMongoDB\u4e2d\u7528\u4f86\u8655\u7406\u6578\u64da\u7684\u5f37\u5927\u5de5\u5177\u3002\u5b83\u5141\u8a31\u7528\u6236\u5c0d\u6578\u64da\u9032\u884c\u8a08\u7b97\u3001\u5206\u7d44\u548c\u6392\u5e8f\u7b49\u64cd\u4f5c\u3002MongoDB\u63d0\u4f9b\u4e86\u591a\u7a2e\u805a\u5408\u7ba1\u9053\u64cd\u4f5c\u7b26\uff0c\u5982$match\u3001$group\u548c$sort\u7b49\u3002<\/p>\n
db.collection.aggregate([\n  { \"$match\": { \"age\": { \"$gt\": 25 } } },\n  { \"$group\": { \"_id\": \"$city\", \"count\": { \"$sum\": 1 } } }\n])<\/code><\/pre>\n
MongoDB\u7684\u512a\u52e2<\/h2>\n
MongoDB\u7684\u512a\u52e2\u5728\u65bc\u5176\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002\u7531\u65bc\u5176\u6587\u6a94\u5c0e\u5411\u7684\u8a2d\u8a08\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5feb\u901f\u9069\u61c9\u8b8a\u5316\u7684\u9700\u6c42\u3002\u6b64\u5916\uff0cMongoDB\u7684\u5206\u7247\u6280\u8853\u4f7f\u5f97\u6578\u64da\u53ef\u4ee5\u5728\u591a\u500b\u4f3a\u670d\u5668\u4e0a\u5206\u4f48\u5b58\u5132\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u53ef\u64f4\u5c55\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
MongoDB\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684NoSQL\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u6578\u64da\u5b58\u5132\u548c\u9ad8\u6548\u7684\u67e5\u8a62\u80fd\u529b\u3002\u4e86\u89e3\u5176\u57fa\u672c\u8853\u8a9e\u548c\u6982\u5ff5\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u6578\u64da\u9700\u6c42\u7684\u589e\u9577\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5982\u9999\u6e2fVPS<\/a>\u548c\u96f2\u4f3a\u670d\u5668<\/a>\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22MongoDB\u8853\u8a9e\uff0c\u4e86\u89e3\u9019\u6b3e\u6d41\u884c\u6578\u64da\u5eab\u7684\u6838\u5fc3\u6982\u5ff5\u3001\u529f\u80fd\u53ca\u61c9\u7528\uff0c\u52a9\u60a8\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-63798","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63798","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=63798"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63798\/revisions"}],"predecessor-version":[{"id":63799,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/63798\/revisions\/63799"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=63798"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=63798"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=63798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}