mongodb 聚合(aggregate)

白衣染霜華 發表於 2020-12-29 14:38:00

<h1 class="reset-3c756112--pageTitle-33dc39a3">　  MongoDB中文手册|官方文档中文版 https://docs.mongoing.com/</h1>
　　聚合操作处理数据记录和 return 计算结果。聚合操作将来自多个文档的值组合在一起，并且可以对分组数据执行各种操作以返回单个结果。
　　 MongoDB 提供了三种执行聚合的方法：聚合管道，map-reduce function和单一目的聚合方法。
　　<span data-slate-fragment="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">管道使用MongoDB中的原生操作提供有效的数据聚合，并且是MongoDB中数据聚合的首选方法。<span data-key="38f540c621be4b9a9e3f88b0fd403066" data-slate-fragment="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"> 
 
　　一、聚合管道
　　MongoDB 的Aggregation framework是以数据处理管道的概念为蓝本的。文档进入多阶段管道，将文档转换为聚合结果。
　　聚合(aggregate)主要用于计算数据，类似sql中的sum()、avg()
　　语法：db.集合名称.aggregate([{管道:{表达式}}])
 
　　管道在MongoDB中一般用于将当前命令的输出结果作为下一个命令的输入
 
　　常用管道
　　1、$group：将集合中的文档分组，可用于统计结果
　　2、$match：过滤数据，只输出符合条件的文档
　　3、$project：修改输入文档的结构，如重命名、增加、删除字段、创建计算结果
　　4、$sort：将输入文档排序后输出
　　5、$limit：限制聚合管道返回的文档数
　　6、$skip：跳过指定数量的文档，并返回余下的文档
　　7、$unwind：将数组类型的字段进行拆分
　　
　　表达式：处理输入文档并输出
　　语法：表达式:'$列名'
　　常用表达式
　　1、$sum：计算总和，$sum:1同count表示计数
　　2、$avg：计算平均值
　　3、$min：获取最小值
　　4、$max：获取最大值
　　5、$push：在结果文档中插入值到一个数组中
　　6、$first：根据资源文档的排序获取第一个文档数据
　　7、$last：根据资源文档的排序获取最后一个文档数据
 
　　$group
　　将集合中的文档分组，可用于统计结果，
　　_id表示分组的依据，使用某个字段的格式为'$字段'
　　例如：统计订单表中每天订单的数量：
<div class="cnblogs_code">
<pre>db.order.aggregate(
[
{ $group: { _id: "date", count: { "$sum": 1 } } }
])</pre>
</div>
　　Group by null
　　将集合中所有文档分为一组
　　求订单总数
<div class="cnblogs_code">
<pre>db.order.aggregate(
[
{ $group: {_id:null, count: { "$sum": 1 } } }
])</pre>
</div>
 
　　透视数据
　　统计detail10集合中，直播和视频的标题
<div class="cnblogs_code">
<pre>db.detail10.aggregate(
[
{ $match: { name: '央视新闻',date:'2020-10-08',tag:{'$in':['视频','直播']}} },
{ $group: { _id: '$tag', title: { '$push': '$title'} } }
])</pre>
</div>
结果：
<div class="cnblogs_code">
<pre>{ "_id" : "直播", "title" : [ "《新闻1+1》| 急救设备，能成为公共场所的“标配”吗？", "夜游西安乐华城 “月赏”秦汉古风新国潮", "多地直击假日返程高峰", "长假首日品中国国际动漫节的“中国风”", "《新闻1+1》| 急救设备，能成为公共场所的“标配”吗？", "夜游西安乐华城 “月赏”秦汉古风新国潮", "多地直击假日返程高峰", "长假首日品中国国际动漫节的“中国风”" ] }
{ "_id" : "视频", "title" : [ "假期要结束了朱广权段子还在", "天问一号飞控团队有成员生于1998年", "美加州出现血红色满月", "广州灯光秀夜空拼出钟南山肖像", "来自新闻联播的双节祝福", "曾在武汉共同抗疫他们结婚了！", "假期要结束了朱广权段子还在", "天问一号飞控团队有成员生于1998年", "美加州出现血红色满月", "广州灯光秀夜空拼出钟南山肖像", "来自新闻联播的双节祝福", "曾在武汉共同抗疫他们结婚了！" ] }</pre>
</div>
 
 　　$match
　　　用于过滤数据，只输出符合条件的文档
　　　使用MongoDB的标准查询操作
 
 　　例如，查询name为央视新闻，日期为2020-10-08的记录中每个tag值对应的记录数量
<div class="cnblogs_code">
<pre>db.detail10.aggregate(
[
{ $match: { name: "央视新闻",date:'2020-10-08' } },

{ $group: { _id: "$tag", count: { "$sum": 1 } } }
])</pre>
</div>
 
 　　$project
　　 修改输入文档的结构，如重命名、增加、删除字段、创建计算结果
　　
<div class="cnblogs_code">
<pre>db.detail10.aggregate(
[
{ $match: { name: '央视新闻',date:'2020-10-08',tag:{'$in':['视频','直播']}} },
{ $group: { _id: "$tag", count: { "$sum": 1 } } },
{ $project: { _id: 0, count:1} }
])</pre>
</div>
 
　　$sort
　　将输入文档排序后输出
　　查询tag对应记录数量，按统计数量升序
<div class="cnblogs_code">
<pre>db.detail10.aggregate(
[
{ $match: { name: "央视新闻",date:'2020-10-08' } },

{ $group: { _id: "$tag", count: { "$sum": 1 } } },

{$sort:{count:1}}
])</pre>
</div>
　　结果：
<div class="cnblogs_code">
<pre>{ "_id" : "小视频", "count" : 6 }
{ "_id" : "直播", "count" : 8 }
{ "_id" : "视频", "count" : 12 }
{ "_id" : "微头条", "count" : 16 }
{ "_id" : "文章", "count" : 366 }</pre>
</div>
 
　　$limit
　　限制聚合管道返回的文档数，
　　例如返回上面返回结果2条记录：
<div class="cnblogs_code">
<pre>db.detail10.aggregate(
[
{ $match: { name: "央视新闻",date:'2020-10-08' } },

{ $group: { _id: "$tag", count: { "$sum": 1 } } },

{$sort:{count:1}},

{$limit:2}
])</pre>
</div>
　　结果：
<div class="cnblogs_code">
<pre>{ "_id" : "小视频", "count" : 6 }
{ "_id" : "直播", "count" : 8 }</pre>
</div>
　　
　　$unwind
　　语法1
　　将文档中的某一个数组类型字段拆分成多条，每条包含数组中的一个值
　　构造数据：
<div class="cnblogs_code">
<pre>db.test.insert({item:'新闻',tag:['视频','直播','文章','小视频','微头条']})</pre>
</div>
<div class="cnblogs_code">
<pre>db.test.aggregate([{$unwind:'$tag'}]) 结果：
{ "_id" : ObjectId("5feadb227aa0648519c1ad4a"), "item" : "新闻", "tag" : "视频" }
{ "_id" : ObjectId("5feadb227aa0648519c1ad4a"), "item" : "新闻", "tag" : "直播" }
{ "_id" : ObjectId("5feadb227aa0648519c1ad4a"), "item" : "新闻", "tag" : "文章" }
{ "_id" : ObjectId("5feadb227aa0648519c1ad4a"), "item" : "新闻", "tag" : "小视频" }
{ "_id" : ObjectId("5feadb227aa0648519c1ad4a"), "item" : "新闻", "tag" : "微头条" }</pre>
</div>
 　　语法2：
　　　　对某字段值进行拆分，
　　　　处理空数组、非数组、无字段、null情况
　　
<div class="cnblogs_code">
<pre>db.inventory.aggregate([{
$unwind:{
path:'$字段名称',
preserveNullAndEmptyArrays:<boolean>#防止数据丢失
}
}])</pre>
</div>
　　构造数据：
<div class="cnblogs_code">
<pre>db.test.insert([
{ "_id" : 1, "item" : "a", "tag": ['视频','直播','文章','小视频','微头条'] },
{ "_id" : 2, "item" : "b", "tag" : [ ] },
{ "_id" : 3, "item" : "c", "tag": "视频" },
{ "_id" : 4, "item" : "d" },
{ "_id" : 5, "item" : "e", "size" : null }
])</pre>
</div>
　　使用语法1查询
<div class="cnblogs_code">
<pre>db.test.aggregate([{$unwind:'$tag'}])</pre>
</div>
结果：
<div class="cnblogs_code">
<pre>{ "_id" : 1, "item" : "a", "tag" : "视频" }
{ "_id" : 1, "item" : "a", "tag" : "直播" }
{ "_id" : 1, "item" : "a", "tag" : "文章" }
{ "_id" : 1, "item" : "a", "tag" : "小视频" }
{ "_id" : 1, "item" : "a", "tag" : "微头条" }
{ "_id" : 3, "item" : "c", "tag" : "视频" }</pre>
</div>
 
查看查询结果，发现对于空数组、无字段、null的文档，都被丢弃了
如何能不丢弃呢？使用语法2
<div class="cnblogs_code">
<pre>db.test.aggregate([{$unwind:{path:'$tag',preserveNullAndEmptyArrays:true}}])
{ "_id" : 1, "item" : "a", "tag" : "视频" }
{ "_id" : 1, "item" : "a", "tag" : "直播" }
{ "_id" : 1, "item" : "a", "tag" : "文章" }
{ "_id" : 1, "item" : "a", "tag" : "小视频" }
{ "_id" : 1, "item" : "a", "tag" : "微头条" }
{ "_id" : 2, "item" : "b" }
{ "_id" : 3, "item" : "c", "tag" : "视频" }
{ "_id" : 4, "item" : "d" }
{ "_id" : 5, "item" : "e", "size" : null }</pre>
</div>
 
　　 
 
　　
<p class="blockParagraph-544a408c" data-key="ce0cff6e62b042babc2f12b86c6c6c33" data-slate-fragment="%7B%22object%22%3A%22document%22%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22block%22%2C%22type%22%3A%22paragraph%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%AC%AC%E4%B8%80%E9%98%B6%E6%AE%B5%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22bold%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%EF%BC%9A%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%2C%7B%22object%22%3A%22inline%22%2C%22type%22%3A%22link%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%22pageID%22%3A%22-MGP53xSAmXBKiO7g74K%22%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%24match%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22code%22%2C%22data%22%3A%7B%7D%7D%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E9%98%B6%E6%AE%B5%E6%8C%89%22%2C%22marks%22%3A%5B%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22status%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22code%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E5%AD%97%E6%AE%B5%E8%BF%87%E6%BB%A4%E6%96%87%E6%A1%A3%EF%BC%8C%E5%B9%B6%E5%B0%86%22%2C%22marks%22%3A%5B%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22status%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22code%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%AD%89%E4%BA%8E%22%2C%22marks%22%3A%5B%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%5C%22A%5C%22%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22code%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%9A%84%E6%96%87%E6%A1%A3%E4%BC%A0%E9%80%92%E5%88%B0%E4%B8%8B%E4%B8%80%E9%98%B6%E6%AE%B5%E3%80%82%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22block%22%2C%22type%22%3A%22paragraph%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%AC%AC%E4%BA%8C%E9%98%B6%E6%AE%B5%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22bold%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%EF%BC%9A%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%2C%7B%22object%22%3A%22inline%22%2C%22type%22%3A%22link%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%22pageID%22%3A%22-MGP53xSAmXBKiO7g74K%22%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%24group%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22code%22%2C%22data%22%3A%7B%7D%7D%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E9%98%B6%E6%AE%B5%E6%8C%89%22%2C%22marks%22%3A%5B%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22cust_id%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22code%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E5%AD%97%E6%AE%B5%E5%B0%86%E6%96%87%E6%A1%A3%E5%88%86%E7%BB%84%EF%BC%8C%E4%BB%A5%E8%AE%A1%E7%AE%97%E6%AF%8F%E4%B8%AA%E5%94%AF%E4%B8%80%E5%80%BC%22%2C%22marks%22%3A%5B%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22cust_id%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22code%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%9A%84%E9%87%91%E9%A2%9D%E6%80%BB%E5%92%8C%E3%80%82%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22block%22%2C%22type%22%3A%22paragraph%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E6%9C%80%E5%9F%BA%E6%9C%AC%E7%9A%84%E7%AE%A1%E9%81%93%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BE%9B%22%2C%22marks%22%3A%5B%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E8%BF%87%E6%BB%A4%E5%99%A8%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22italic%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%EF%BC%8C%E5%85%B6%E6%93%8D%E4%BD%9C%E7%B1%BB%E4%BC%BC%E4%BA%8E%E6%9F%A5%E8%AF%A2%E5%92%8C%E4%BF%AE%E6%94%B9%E8%BE%93%E5%87%BA%E6%96%87%E6%A1%A3%E6%A0%BC%E5%BC%8F%E7%9A%84%22%2C%22marks%22%3A%5B%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E6%96%87%E6%A1%A3%E8%BD%AC%E6%8D%A2%22%2C%22marks%22%3A%5B%7B%22object%22%3A%22mark%22%2C%22type%22%3A%22italic%22%2C%22data%22%3A%7B%7D%7D%5D%7D%2C%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E3%80%82%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22block%22%2C%22type%22%3A%22paragraph%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E5%85%B6%E4%BB%96%E7%AE%A1%E9%81%93%E6%93%8D%E4%BD%9C%E6%8F%90%E4%BE%9B%E4%BA%86%E7%94%A8%E4%BA%8E%E6%8C%89%E7%89%B9%E5%AE%9A%E5%AD%97%E6%AE%B5%E5%AF%B9%E6%96%87%E6%A1%A3%E8%BF%9B%E8%A1%8C%E5%88%86%E7%BB%84%E5%92%8C%E6%8E%92%E5%BA%8F%E7%9A%84%E5%B7%A5%E5%85%B7%EF%BC%8C%E4%BB%A5%E5%8F%8A%E7%94%A8%E4%BA%8E%E6%B1%87%E6%80%BB%E5%8C%85%E6%8B%AC%E6%96%87%E6%A1%A3%E6%95%B0%E7%BB%84%E5%9C%A8%E5%86%85%E7%9A%84%E6%95%B0%E7%BB%84%E5%86%85%E5%AE%B9%E7%9A%84%E5%B7%A5%E5%85%B7%E3%80%82%E5%8F%A6%E5%A4%96%EF%BC%8C%E7%AE%A1%E9%81%93%E9%98%B6%E6%AE%B5%E5%8F%AF%E4%BB%A5%E5%B0%86%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%2C%7B%22object%22%3A%22inline%22%2C%22type%22%3A%22link%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%22pageID%22%3A%22-MGP53xSAmXBKiO7g74K%22%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E8%BF%90%E7%AE%97%E7%AC%A6%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%94%A8%E4%BA%8E%E8%AF%B8%E5%A6%82%E8%AE%A1%E7%AE%97%E5%B9%B3%E5%9D%87%E5%80%BC%E6%88%96%E8%BF%9E%E6%8E%A5%E5%AD%97%E7%AC%A6%E4%B8%B2%E4%B9%8B%E7%B1%BB%E7%9A%84%E4%BB%BB%E5%8A%A1%E3%80%82%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22block%22%2C%22type%22%3A%22paragraph%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%AE%A1%E9%81%93%E4%BD%BF%E7%94%A8MongoDB%E4%B8%AD%E7%9A%84%E5%8E%9F%E7%94%9F%E6%93%8D%E4%BD%9C%E6%8F%90%E4%BE%9B%E6%9C%89%E6%95%88%E7%9A%84%E6%95%B0%E6%8D%AE%E8%81%9A%E5%90%88%EF%BC%8C%E5%B9%B6%E4%B8%94%E6%98%AFMongoDB%E4%B8%AD%E6%95%B0%E6%8D%AE%E8%81%9A%E5%90%88%E7%9A%84%E9%A6%96%E9%80%89%E6%96%B9%E6%B3%95%E3%80%82%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22block%22%2C%22type%22%3A%22paragraph%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E8%81%9A%E5%90%88%E7%AE%A1%E9%81%93%E5%8F%AF%E4%BB%A5%E5%9C%A8%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%2C%7B%22object%22%3A%22inline%22%2C%22type%22%3A%22link%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%22pageID%22%3A%22-MGP53xSAmXBKiO7g74K%22%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E5%88%86%E7%89%87%E9%9B%86%E5%90%88%20sharded%20collection%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E4%B8%8A%E8%BF%90%E8%A1%8C%E3%80%82%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22block%22%2C%22type%22%3A%22paragraph%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E8%81%9A%E5%90%88%E7%AE%A1%E9%81%93%E5%8F%AF%E4%BB%A5%E4%BD%BF%E7%94%A8%E7%B4%A2%E5%BC%95%E6%9D%A5%E6%94%B9%E5%96%84%E5%85%B6%E6%9F%90%E4%BA%9B%E9%98%B6%E6%AE%B5%E7%9A%84%E6%80%A7%E8%83%BD%E3%80%82%E6%AD%A4%E5%A4%96%EF%BC%8C%E8%81%9A%E5%90%88%E7%AE%A1%E9%81%93%E5%85%B7%E6%9C%89%E5%86%85%E9%83%A8%E4%BC%98%E5%8C%96%E9%98%B6%E6%AE%B5%E3%80%82%E6%9C%89%E5%85%B3%E8%AF%A6%E7%BB%86%E4%BF%A1%E6%81%AF%EF%BC%8C%E8%AF%B7%E5%8F%82%E9%98%85%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%2C%7B%22object%22%3A%22inline%22%2C%22type%22%3A%22link%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%22pageID%22%3A%22-MGP53xTLWQOF9TzONzI%22%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E7%AE%A1%E9%81%93%E6%93%8D%E4%BD%9C%E5%92%8C%E7%B4%A2%E5%BC%95%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E5%92%8C%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%2C%7B%22object%22%3A%22inline%22%2C%22type%22%3A%22link%22%2C%22isVoid%22%3Afalse%2C%22data%22%3A%7B%22pageID%22%3A%22-MGP53xUGLEZAPmg6wIB%22%7D%2C%22nodes%22%3A%5B%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E8%81%9A%E5%90%88%E7%AE%A1%E9%81%93%E4%BC%98%E5%8C%96%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%2C%7B%22object%22%3A%22text%22%2C%22leaves%22%3A%5B%7B%22object%22%3A%22leaf%22%2C%22text%22%3A%22%E3%80%82%22%2C%22marks%22%3A%5B%5D%7D%5D%7D%5D%7D%5D%7D">  
来源：https://www.cnblogs.com/shaosks/p/14206470.html

頁: [1]

琼殿技术论坛's Archiver

mongodb 聚合(aggregate)