mongodb复杂查询怎么办[mongodb教程]
m内嵌文档复杂查询
1、数据结构
{ "_id":"1412243",
"info":{
"data":[
{
"broker_id":0,
"receive_status":0,
"house_id":"1412243",
"gov_id":4127238,
"owner_phone":"",
"owner_name":"经纪人",
"source_name":"中原地产",
"source_logo":"http://file.zhugefang.com/5a351abc8fe131513429692_80_80.png",
"small_logo_url":"http://file.zhugefang.com/5a351abbbca1b1513429691_32_32.png",
"source":2,
"house_type":"1",
"pay_type":0,
"renzheng":"",
"header_pic":"",
"receive_time":0,
"city":7,
"service_phone":"4008985666,133188",
"house_source_desc":"房屋信息发布经纪人",
"source_url":"https://tj.centanet.com/ershoufang/tjnk0007892545.html",
"house_price":450,
"fee":"0.00",
"fee_new":"买方1% 卖方1%",
"feedback_total":"",
"feedback_content":[
]
},
{
"broker_id":0,
"receive_status":0,
"house_id":"1412243",
"gov_id":2964975,
"owner_phone":"",
"owner_name":"经纪人",
"source_name":"链家地产",
"source_logo":"http://file.zhugefang.com/5a37669b7b3c21513580187_80_80.png",
"small_logo_url":"http://file.zhugefang.com/5a37669a87fc11513580186_32_32.png",
"source":1,
"house_type":"1",
"pay_type":0,
"renzheng":"",
"header_pic":"",
"receive_time":0,
"city":7,
"service_phone":"4008790056,7048",
"house_source_desc":"房屋信息发布经纪人",
"source_url":"http://tj.lianjia.com/ershoufang/101101622982.html",
"house_price":450,
"fee":"0.00",
"fee_new":"买方2.5%",
"feedback_total":"",
"feedback_content":[
]
}
],
"company_ids":4
},
"city_name":"天津",
"city":"tj",
"cityid":"7",
"craw_date":"2018-06-30"
}
2、db.books.find({"info.data":{"$elemMatch":{"owner_name":"经纪人","source_name":"中原地产"}}})
这种数据结构 info 是一个对象，data中是一个列表，使用上面的命令就可以把数据筛选出来。
如果info是一个列表，data也是一个列表
db.books.find({info:{"$elemMatch":{data:{"$elemMatch":{house_id:"2185216"}}}}})
使用上面的命令就能把数据筛选出来
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