Question

我想在mongodb上导出字段的具体值。我的mongoexport的输出是这样的：

{"_id":"00:XX:XX:2a:15:e08503904736321657210145581","timestamp":1496095264,"MAC":"00:XX:XX:2a:15:XX","RSSI":24,"manufacturer":"30:XX:X"}

{"_id":"00:XX:XX:2b:10:b08503818454462501125707070","timestamp":1496181546,"MAC":"00:XX:XX:2b:10:XX","RSSI":29,"manufacturer":"b0:XX:XX"}

这有5M值。是否可以只输出一个＆＃34; MAC＆＃34;的值。这是我导出值的突击队员：

mongoexport -u usser -p pwd --host host:port -d pingsDB -c 2017-05-25 --authenticationDatabase admin -f "timestamp,MAC,RSSI,manufacturer"  -o mongo.csv

非常感谢。

Answer 1

您可以添加查询过滤器，如下所示。

mongoexport -u usser -p pwd --host host:port -d pingsDB -c 2017-05-25 --authenticationDatabase admin -f "timestamp,MAC,RSSI,manufacturer" --query { "MAC":"00:XX:XX:2b:10:XX"} -o mongo.csv

请在此处查看完整文档：https://docs.mongodb.com/manual/reference/program/mongoexport/

Answer 2

回答@JonLuca，它修改了语法：

mongoexport -u usser -p pwd --host host:port -d pingsDB -c 2017-05-25 
--authenticationDatabase admin -f "timestamp,MAC,RSSI,manufacturer"  
--query { "MAC":"00:XX:XX:2b:10:XX"} -o mongo.csv

到

  mongoexport -u usser -p pwd --host host:port -d pingsDB -c 2017-05-25 
  --authenticationDatabase admin -f "timestamp,MAC,RSSI,manufacturer"  
  --query '{ "MAC":"00:XX:XX:2b:10:XX"}' -o mongo.csv

在' '

之前和之后查看{ }

谢谢！

从mongodb导出具体值

2 个答案: