{"id":21587,"date":"2024-01-02T11:57:27","date_gmt":"2024-01-02T11:57:27","guid":{"rendered":"https:\/\/server.hk\/blog\/21587\/"},"modified":"2024-11-14T10:30:16","modified_gmt":"2024-11-14T02:30:16","slug":"mongodb-glossary-expression","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21587\/","title":{"rendered":"MongoDB \u8a5e\u5f59\u8868 – \u8868\u9054\u5f0f"},"content":{"rendered":"

MongoDB \u8a5e\u5f59\u8868 – \u8868\u9054\u5f0f<\/h1>\n

\u5728 MongoDB \u7684\u4e16\u754c\u4e2d\uff0c\u8868\u9054\u5f0f\u5728\u67e5\u8a62\u548c\u64cd\u4f5c\u6578\u64da\u65b9\u9762\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u8868\u9054\u5f0f\u662f\u503c\u3001\u5b57\u6bb5\u3001\u904b\u7b97\u7b26\u548c\u51fd\u6578\u7684\u7d44\u5408\uff0cMongoDB \u6703\u5c0d\u5176\u9032\u884c\u8a55\u4f30\u4ee5\u7522\u751f\u7d50\u679c\u3002\u5c0d\u65bc\u4f7f\u7528 MongoDB \u6578\u64da\u5eab\u7684\u958b\u767c\u8005\u548c\u7ba1\u7406\u54e1\u4f86\u8aaa\uff0c\u7406\u89e3\u8868\u9054\u5f0f\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e MongoDB \u4e2d\u8868\u9054\u5f0f\u7684\u6982\u5ff5\u4ee5\u53ca\u5b83\u5011\u7684\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n

\u4ec0\u9ebc\u662f MongoDB \u4e2d\u7684\u8868\u9054\u5f0f\uff1f<\/h2>\n

\u5728 MongoDB \u4e2d\uff0c\u8868\u9054\u5f0f\u662f\u4e00\u6bb5\u4ee3\u78bc\uff0cMongoDB \u6703\u5c0d\u5176\u9032\u884c\u8a55\u4f30\u4ee5\u57f7\u884c\u5404\u7a2e\u64cd\u4f5c\uff0c\u4f8b\u5982\u904e\u6ffe\u6587\u6a94\u3001\u66f4\u65b0\u5b57\u6bb5\u6216\u805a\u5408\u6578\u64da\u3002\u6839\u64da\u64cd\u4f5c\u7684\u8981\u6c42\uff0c\u8868\u9054\u5f0f\u53ef\u4ee5\u662f\u7c21\u55ae\u7684\u6216\u8907\u96dc\u7684\u3002<\/p>\n

MongoDB \u4e2d\u7684\u8868\u9054\u5f0f\u4f7f\u7528\u985e\u4f3c JSON \u7684\u8a9e\u6cd5\u7de8\u5beb\u3002\u5b83\u5011\u7531\u5b57\u6bb5\u3001\u503c\u3001\u904b\u7b97\u7b26\u548c\u51fd\u6578\u7d44\u6210\u3002\u5b57\u6bb5\u8868\u793a\u5b58\u5132\u5728 MongoDB \u6587\u6a94\u4e2d\u7684\u6578\u64da\uff0c\u503c\u662f\u5be6\u969b\u6578\u64da\uff0c\u904b\u7b97\u7b26\u5c0d\u5b57\u6bb5\u548c\u6578\u503c\u57f7\u884c\u64cd\u4f5c\uff0c\u800c\u51fd\u6578\u63d0\u4f9b\u984d\u5916\u7684\u529f\u80fd\u3002<\/p>\n

MongoDB \u4e2d\u7684\u8868\u9054\u5f0f\u985e\u578b<\/h2>\n

MongoDB \u652f\u6301\u5404\u7a2e\u985e\u578b\u7684\u8868\u9054\u5f0f\uff0c\u6bcf\u7a2e\u985e\u578b\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u3002\u8b93\u6211\u5011\u63a2\u8a0e\u4e00\u4e9b\u5e38\u7528\u7684\u8868\u9054\u5f0f\u985e\u578b\uff1a<\/p>\n

\u6bd4\u8f03\u8868\u9054\u5f0f<\/h3>\n

\u6bd4\u8f03\u8868\u9054\u5f0f\u7528\u65bc\u6bd4\u8f03 MongoDB \u4e2d\u7684\u5b57\u6bb5\u6216\u503c\u3002\u5b83\u5011\u5305\u62ec\u904b\u7b97\u7b26\u5982 $eq\uff08\u7b49\u65bc\uff09\u3001$ne\uff08\u4e0d\u7b49\u65bc\uff09\u3001$gt\uff08\u5927\u65bc\uff09\u3001$lt\uff08\u5c0f\u65bc\uff09\u3001$gte\uff08\u5927\u65bc\u6216\u7b49\u65bc\uff09\u548c $lte\uff08\u5c0f\u65bc\u6216\u7b49\u65bc\uff09\u3002\u9019\u4e9b\u904b\u7b97\u7b26\u5141\u8a31\u60a8\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u904e\u6ffe\u6587\u6a94\u3002<\/p>\n

\u908f\u8f2f\u8868\u9054\u5f0f<\/h3>\n

MongoDB \u4e2d\u7684\u908f\u8f2f\u8868\u9054\u5f0f\u7528\u65bc\u4f7f\u7528\u908f\u8f2f\u904b\u7b97\u7b26\u5982 $and\u3001$or \u548c $not \u7d44\u5408\u591a\u500b\u689d\u4ef6\u3002\u9019\u4e9b\u904b\u7b97\u7b26\u5e6b\u52a9\u60a8\u901a\u904e\u7d44\u5408\u591a\u500b\u6bd4\u8f03\u8868\u9054\u5f0f\u4f86\u5275\u5efa\u8907\u96dc\u7684\u67e5\u8a62\u3002<\/p>\n

\u5143\u7d20\u8868\u9054\u5f0f<\/h3>\n

\u5143\u7d20\u8868\u9054\u5f0f\u7528\u65bc\u6aa2\u67e5 MongoDB \u6587\u6a94\u4e2d\u5b57\u6bb5\u6216\u503c\u7684\u5b58\u5728\u6027\u3002\u5b83\u5011\u5305\u62ec\u904b\u7b97\u7b26\u5982 $exists \u548c $type\u3002$exists \u904b\u7b97\u7b26\u6aa2\u67e5\u6587\u6a94\u4e2d\u662f\u5426\u5b58\u5728\u67d0\u500b\u5b57\u6bb5\uff0c\u800c $type \u904b\u7b97\u7b26\u6aa2\u67e5\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u3002<\/p>\n

\u6578\u7d44\u8868\u9054\u5f0f<\/h3>\n

MongoDB \u4e2d\u7684\u6578\u7d44\u8868\u9054\u5f0f\u7528\u65bc\u8655\u7406\u5b58\u5132\u5728\u6587\u6a94\u4e2d\u7684\u6578\u7d44\u3002\u5b83\u5011\u5305\u62ec\u904b\u7b97\u7b26\u5982 $in\u3001$nin\u3001$all\u3001$size \u548c $elemMatch\u3002\u9019\u4e9b\u904b\u7b97\u7b26\u5141\u8a31\u60a8\u9ad8\u6548\u5730\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u64cd\u4f5c\u6578\u7d44\u3002<\/p>\n

\u6587\u672c\u8868\u9054\u5f0f<\/h3>\n

\u6587\u672c\u8868\u9054\u5f0f\u7528\u65bc\u5728 MongoDB \u4e2d\u57f7\u884c\u5168\u6587\u641c\u7d22\u3002\u5b83\u5011\u5305\u62ec\u904b\u7b97\u7b26\u5982 $text \u548c $search\u3002\u9019\u4e9b\u904b\u7b97\u7b26\u4f7f\u60a8\u80fd\u5920\u5728\u6587\u672c\u5b57\u6bb5\u4e2d\u641c\u7d22\u7279\u5b9a\u55ae\u8a5e\u6216\u77ed\u8a9e\u3002<\/p>\n

\u5728 MongoDB \u4e2d\u4f7f\u7528\u8868\u9054\u5f0f\u7684\u793a\u4f8b<\/h2>\n

\u8b93\u6211\u5011\u770b\u4e00\u4e9b\u793a\u4f8b\uff0c\u4ee5\u4e86\u89e3\u8868\u9054\u5f0f\u5728 MongoDB \u4e2d\u7684\u4f7f\u7528\u65b9\u5f0f\uff1a<\/p>\n

\u793a\u4f8b 1\uff1a\u904e\u6ffe\u6587\u6a94<\/h3>\n
{\r\n  \"name\": \"John\",\r\n  \"age\": 30,\r\n  \"city\": \"New York\"\r\n}<\/code><\/pre>\n
\u8981\u904e\u6ffe\u5e74\u9f61\u5927\u65bc 25 \u7684\u6587\u6a94\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8868\u9054\u5f0f\uff1a<\/p>\n
{ \"age\": { \"$gt\": 25 } }<\/code><\/pre>\n
\u793a\u4f8b 2\uff1a\u66f4\u65b0\u5b57\u6bb5<\/h3>\n
\u8981\u5c07\u57ce\u5e02\u5b57\u6bb5\u66f4\u65b0\u70ba\u300c\u820a\u91d1\u5c71\u300d\uff0c\u91dd\u5c0d\u540d\u7a31\u70ba\u300cJohn\u300d\u7684\u6587\u6a94\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8868\u9054\u5f0f\uff1a<\/p>\n
{ \"name\": \"John\" }<\/code><\/pre>\n
\u4ee5\u53ca\u66f4\u65b0\u8868\u9054\u5f0f\uff1a<\/p>\n
{ \"$set\": { \"city\": \"San Francisco\" } }<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
\u8868\u9054\u5f0f\u662f MongoDB \u4e2d\u7684\u4e00\u500b\u57fa\u672c\u6982\u5ff5\uff0c\u4f7f\u958b\u767c\u8005\u548c\u7ba1\u7406\u54e1\u80fd\u5920\u6709\u6548\u5730\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u64cd\u4f5c\u6578\u64da\u3002\u7406\u89e3\u4e0d\u540c\u985e\u578b\u7684\u8868\u9054\u5f0f\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u5c0d\u65bc\u4f7f\u7528 MongoDB \u6578\u64da\u5eab\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5229\u7528\u8868\u9054\u5f0f\u7684\u529b\u91cf\uff0c\u60a8\u53ef\u4ee5\u5145\u5206\u767c\u63ee MongoDB \u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u7684\u6f5b\u529b\u3002<\/p>\n
\u6b32\u4e86\u89e3\u6709\u95dc VPS \u4e3b\u6a5f\u89e3\u6c7a\u65b9\u6848\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
MongoDB \u8a5e\u5f59\u8868 &#82...<\/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-21587","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21587","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=21587"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21587\/revisions"}],"predecessor-version":[{"id":23854,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21587\/revisions\/23854"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}