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Cannot fetch data #19
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You need to enclose $group and $sum in quotes.
…On Thu, 9 Aug 2018, 11:34 yulidai, ***@***.***> wrote:
Query:
db.test.aggregate([{$group : {_id : "$name”, num_tutorial : {$sum : 1}}}])
Error in Response:
{ "message": "Unexpected token $ in JSON at position 3" }
I'm a novice at these things, can you help me what wrong with it?
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Query: Error in Response |
Thanks for your reply. I changed query to: Then there's no wrong messge. But still not info showed in "Table Panel", but has result when running in mongo-cli |
you need to project the following fields in order for it to show on the panel:
You can check the README for more info on the required fields that the api expects |
@minh0722 Thank you for your patience Here is my data in mongo with command in mongo:
Then the query in panel is:
But still nothing showed in either Graph or Table. Any help will be appreciated, thank you! |
You don't have a column |
Sorry I edited my prev comment |
@minh0722 Thank you, Still nothing after changing, any other problem? |
what's the response from the query? |
target is
response is
|
change the type to timeserie. Table type is not supported |
Result after changing type to timeserie
|
Maybe the reason is caused by time zone(here is china), but when i change time range from "last 6h" to "last 24h". But still nothing to show, i don't know why... T.T |
I dont think that's the problem cause you dont have a "$match" pipeline in your aggregate. But just to try it out add this before "$group": |
No data too. when run in mongo-cli with:
Will get data below:
But with nothing in grafana. Maybe caused by my grafana setting? But datasource test is success. And i rechecked config is same to the document |
did you select the datasource that is above the query box? |
Here is the db config:
And the mongodb is running in local, Datasource testing info is:
|
Yes i did select the mongodb as the datasouce |
Oh my god, the Datasource testing always success even though closing the database. I think is the proxy hide the error, i'll check it... |
check if data source is correctly configured. I had problem with some proxy settings and I had to write the full proxy domain name in mongodb url so you can check that too |
@minh0722 When i change "MongoDB URL" to localhost, the response is different:
response:
|
I think the field time has to be of type Date |
Right, it's ok after changing the type of time, thanks! |
@yulidai How was this problem solved? I have the same problem, I changed the time type to isodate but it doesn't work. |
I am facing same issues - my query is this - and response is - |
Query:
db.test.aggregate([{$group : {_id : "$name”, num_tutorial : {$sum : 1}}}])
Error in Response:
{ "message": "Unexpected token $ in JSON at position 3" }
I'm a novice at these things, can you help me what wrong with it?
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