{"id":247337,"date":"2024-01-02T20:39:25","date_gmt":"2024-01-02T12:39:25","guid":{"rendered":"https:\/\/www.idc.net\/help\/247337\/"},"modified":"2024-01-02T20:39:25","modified_gmt":"2024-01-02T12:39:25","slug":"mongodb-%e6%9c%af%e8%af%ad-%e6%93%8d%e4%bd%9c%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/247337\/","title":{"rendered":"MongoDB \u672f\u8bed &#8211; \u64cd\u4f5c\u7b26"},"content":{"rendered":"<p><title id=\"mongodb-%e6%9c%af%e8%af%ad-%e6%93%8d%e4%bd%9c%e7%ac%a6-EoGpQgYwGY\">MongoDB \u672f\u8bed - \u64cd\u4f5c\u7b26<\/title><\/p>\n<h1 id=\"mongodb-%e6%9c%af%e8%af%ad-%e6%93%8d%e4%bd%9c%e7%ac%a6-EoGpQgYwGY\">MongoDB \u672f\u8bed - \u64cd\u4f5c\u7b26<\/h1>\n<h2 id=\"%e4%bb%8b%e7%bb%8d-EoGpQgYwGY\">\u4ecb\u7ecd<\/h2>\n<p>MongoDB \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u6587\u6863\u6570\u636e\u5e93\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u73b0\u4ee3\u5e94\u7528\u7a0b\u5e8f\u7684\u5f00\u53d1\u4e2d\u3002\u5728 MongoDB \u4e2d\uff0c\u64cd\u4f5c\u7b26\u662f\u7528\u4e8e\u67e5\u8be2\u548c\u66f4\u65b0\u6587\u6863\u7684\u5173\u952e\u5de5\u5177\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u7528\u7684 MongoDB \u64cd\u4f5c\u7b26\u3002<\/p>\n<h2 id=\"%e6%af%94%e8%be%83%e6%93%8d%e4%bd%9c%e7%ac%a6-EoGpQgYwGY\">\u6bd4\u8f83\u64cd\u4f5c\u7b26<\/h2>\n<p>\u6bd4\u8f83\u64cd\u4f5c\u7b26\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u6bd4\u8f83\u5b57\u6bb5\u7684\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6bd4\u8f83\u64cd\u4f5c\u7b26\uff1a<\/p>\n<ul>\n<li><code>$eq<\/code>\uff1a\u7b49\u4e8e<\/li>\n<li><code>$ne<\/code>\uff1a\u4e0d\u7b49\u4e8e<\/li>\n<li><code>$gt<\/code>\uff1a\u5927\u4e8e<\/li>\n<li><code>$gte<\/code>\uff1a\u5927\u4e8e\u7b49\u4e8e<\/li>\n<li><code>$lt<\/code>\uff1a\u5c0f\u4e8e<\/li>\n<li><code>$lte<\/code>\uff1a\u5c0f\u4e8e\u7b49\u4e8e<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u5e74\u9f84\u5927\u4e8e\u7b49\u4e8e 18 \u5c81\u7684\u7528\u6237\uff1a<\/p>\n<pre><code>db.users.find({ age: { $gte: 18 } })<\/code><\/pre>\n<h2 id=\"%e9%80%bb%e8%be%91%e6%93%8d%e4%bd%9c%e7%ac%a6-EoGpQgYwGY\">\u903b\u8f91\u64cd\u4f5c\u7b26<\/h2>\n<p>\u903b\u8f91\u64cd\u4f5c\u7b26\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u7ec4\u5408\u591a\u4e2a\u6761\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u903b\u8f91\u64cd\u4f5c\u7b26\uff1a<\/p>\n<ul>\n<li><code>$and<\/code>\uff1a\u540c\u65f6\u6ee1\u8db3\u591a\u4e2a\u6761\u4ef6<\/li>\n<li><code>$or<\/code>\uff1a\u6ee1\u8db3\u4efb\u610f\u4e00\u4e2a\u6761\u4ef6<\/li>\n<li><code>$not<\/code>\uff1a\u4e0d\u6ee1\u8db3\u6761\u4ef6<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u5e74\u9f84\u5927\u4e8e\u7b49\u4e8e 18 \u5c81\u5e76\u4e14\u6027\u522b\u4e3a\u5973\u6027\u7684\u7528\u6237\uff1a<\/p>\n<pre><code>db.users.find({ $and: [{ age: { $gte: 18 } }, { gender: \"female\" }] })<\/code><\/pre>\n<h2 id=\"%e5%85%83%e7%b4%a0%e6%93%8d%e4%bd%9c%e7%ac%a6-EoGpQgYwGY\">\u5143\u7d20\u64cd\u4f5c\u7b26<\/h2>\n<p>\u5143\u7d20\u64cd\u4f5c\u7b26\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u68c0\u67e5\u5b57\u6bb5\u662f\u5426\u5b58\u5728\u6216\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u5143\u7d20\u64cd\u4f5c\u7b26\uff1a<\/p>\n<ul>\n<li><code>$exists<\/code>\uff1a\u68c0\u67e5\u5b57\u6bb5\u662f\u5426\u5b58\u5728<\/li>\n<li><code>$type<\/code>\uff1a\u68c0\u67e5\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u5305\u542b email \u5b57\u6bb5\u7684\u7528\u6237\uff1a<\/p>\n<pre><code>db.users.find({ email: { $exists: true } })<\/code><\/pre>\n<h2 id=\"%e6%95%b0%e7%bb%84%e6%93%8d%e4%bd%9c%e7%ac%a6-EoGpQgYwGY\">\u6570\u7ec4\u64cd\u4f5c\u7b26<\/h2>\n<p>\u6570\u7ec4\u64cd\u4f5c\u7b26\u7528\u4e8e\u5728\u67e5\u8be2\u4e2d\u5904\u7406\u6570\u7ec4\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6570\u7ec4\u64cd\u4f5c\u7b26\uff1a<\/p>\n<ul>\n<li><code>$in<\/code>\uff1a\u5339\u914d\u6570\u7ec4\u4e2d\u7684\u4efb\u610f\u4e00\u4e2a\u5143\u7d20<\/li>\n<li><code>$all<\/code>\uff1a\u5339\u914d\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20<\/li>\n<li><code>$size<\/code>\uff1a\u5339\u914d\u6570\u7ec4\u957f\u5ea6<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8be2\u5c06\u8fd4\u56de\u5305\u542b\u6807\u7b7e\u4e3a \"mongodb\" \u6216 \"database\" \u7684\u6587\u7ae0\uff1a<\/p>\n<pre><code>db.articles.find({ tags: { $in: [\"mongodb\", \"database\"] } })<\/code><\/pre>\n<h2 id=\"%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c%e7%ac%a6-EoGpQgYwGY\">\u66f4\u65b0\u64cd\u4f5c\u7b26<\/h2>\n<p>\u66f4\u65b0\u64cd\u4f5c\u7b26\u7528\u4e8e\u66f4\u65b0\u6587\u6863\u4e2d\u7684\u5b57\u6bb5\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u66f4\u65b0\u64cd\u4f5c\u7b26\uff1a<\/p>\n<ul>\n<li><code>$set<\/code>\uff1a\u8bbe\u7f6e\u5b57\u6bb5\u7684\u503c<\/li>\n<li><code>$unset<\/code>\uff1a\u5220\u9664\u5b57\u6bb5<\/li>\n<li><code>$inc<\/code>\uff1a\u589e\u52a0\u5b57\u6bb5\u7684\u503c<\/li>\n<li><code>$push<\/code>\uff1a\u5411\u6570\u7ec4\u5b57\u6bb5\u6dfb\u52a0\u5143\u7d20<\/li>\n<li><code>$pull<\/code>\uff1a\u4ece\u6570\u7ec4\u5b57\u6bb5\u79fb\u9664\u5143\u7d20<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u66f4\u65b0\u64cd\u4f5c\u5c06\u5c06\u7528\u6237\u7684\u5e74\u9f84\u589e\u52a0 1 \u5c81\uff1a<\/p>\n<pre><code>db.users.updateOne({ _id: ObjectId(\"1234567890\") }, { $inc: { age: 1 } })<\/code><\/pre>\n<h2 id=\"%e6%80%bb%e7%bb%93-EoGpQgYwGY\">\u603b\u7ed3<\/h2>\n<p>\u672c\u6587\u4ecb\u7ecd\u4e86\u4e00\u4e9b\u5e38\u7528\u7684 MongoDB \u64cd\u4f5c\u7b26\uff0c\u5305\u62ec\u6bd4\u8f83\u64cd\u4f5c\u7b26\u3001\u903b\u8f91\u64cd\u4f5c\u7b26\u3001\u5143\u7d20\u64cd\u4f5c\u7b26\u3001\u6570\u7ec4\u64cd\u4f5c\u7b26\u548c\u66f4\u65b0\u64cd\u4f5c\u7b26\u3002\u4e86\u89e3\u8fd9\u4e9b\u64cd\u4f5c\u7b26\u5c06\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u4f7f\u7528 MongoDB \u8fdb\u884c\u6570\u636e\u67e5\u8be2\u548c\u66f4\u65b0\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-EoGpQgYwGY\">\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91<\/h3>\n<p>\u540e\u6d6a\u4e91\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u573a\u666f\u3002\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee<a href=\"https:\/\/idc.net\">\u540e\u6d6a\u4e91\u5b98\u7f51<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u672f\u8bed - \u64cd\u4f5c\u7b26 MongoDB \u672f\u8bed - \u64cd\u4f5c\u7b26 \u4ecb\u7ecd MongoDB \u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u6587\u6863\u6570\u636e [&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-247337","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247337","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=247337"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/247337\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=247337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=247337"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=247337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}