TDengine is an open-sourced big data platform under GNU AGPL v3.0, designed and optimized for the Internet of Things (IoT), Connected Cars, Industrial IoT, and IT Infrastructure and Application Monitoring.
Questions tagged [tdengine]
345 questions
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How TDengine downsampling queries
How to perform downsampling queries on TDengine? For example, the original frequency of data was once per second, but now we want to perform one query every 10 seconds
ThinkAlone
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How to estimate the hardware configuration of TDengine
Our data is written approximately once per second, with a device count of 500 to 1000, stored for one year, and each packet size of 5-10Kb.
What is the appropriate configuration?
Should I use TDengine cloud services or the enterprise version. What…
Simon
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how to insert a CSV file into TDengine?
The data is a CSV file with comma as separator and timestamp and string field value quoted by single quotes，how can i insert it into TDengine?
I am now using SQL to achieve that Single row or multiple rows specified with VALUES can be inserted into…
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Cannot able to get the data using rest api from TDengine cloud account
I got the 200 response succes but cannot able to get the response of my query. i want to show the data base available in the TDengine cloud account. And my query is SHOW DATABASES.
Anyone hlep me to get the data from the TDeninge cloud using the…
Sync User
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how to get the beginning, end, and duration of a TDengine window query?
Is there any keywords or pseudocolumns that can indicate the beginning, end, and duration of a TDengine window query?
I am using partitioned queries and windowed queries of TDengine,, as shown below:
Select max (current) from meters partition by…
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show table tags from foo.stb; DB error: syntax error near ".stb;"
I need to view all the tag information under a super table, but when I write it like this, it gives an error. Can someone explain it to me?
taos> use foo;
Query OK, 0 row(s) affected (0.002940s)
taos> create table stb (ts timestamp, c int) tags(loc…
617
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The cluster is disconnected after the leader node breaks down
If the mnode running on the leader node breaks down and the cluster cannot be connected, is there any solution other than restarting the mnode？
Environment： OS: docker image tdengine/tdengine:3.0.2.2
My cluster has 2 mnodes
Brusarh
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JNI error and see " invalid stmt" in client log
when I'm using TDengine,
jni error jobj:0x7f0d87227890,conn:0x7f0de4002980,code:query terminated,msg:query terminated
I want to know what is the cause of this error in the client log?
jni error job:0x7f0d913dacc0,conn:0x7f0de4002980,invalid stmt
I…
Eric
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Handling High-Velocity Data Ingestion with TDengine
I'm working on a project that involves a high influx of time-series data and considering using TDengine. Given its claim of supporting high-speed data ingestion, could anyone provide a more detailed explanation of how TDengine manages this? What is…
Pandy
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Does TDengine support writing a comment for each field?
Does TDengine support writing a comment for each field?
How to write statements that support SQL?
Can TDengine only store change data, that is, if the collected data is the same as the previous time value already stored in the database, it will not…
Sun Hong
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How does TDengine handle data replication and high availability in a distributed environment?
TDengine provides several mechanisms to handle data replication and high availability in a distributed environment:
Replication: TDengine supports data replication between nodes in a cluster. When a node receives data, it can replicate the data to…
shark
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OSError: libtaos.so: cannot open shared object file: No such file or directory
I have this error exception when installing TDengine. Have any of you encountered it before?
I tried to install the application, but he raised this exception: OSError: libtaos.so: cannot open shared object file: No such file or directory
diyong chen
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Does TDengine support geometry datatype?
Does TDengine support geometry datatype?
I'm trying to use TDengine database to store our
Vehicle trajectory data ， but I also need some function to analyze my trajectory data. Does TDengine support OGC standard to achieve that ?
For example I need…
55615612
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how does the TDengine's snapshot work in 3.0 version?
how does the TDengine's snapshot work in 3.0 version?
As I know it is used for recovery when losing data .
but anyone could tell me the principle of it ?
Yu Chen
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How do I migrate TDengine data to other server?
I have server A with TDengine 3.0.2.4 installed, I want to migrate it to server B
but after I move the datafile to B and then change taos.cfg and dnode.json with proper connection information, the startup operation is failed
May I know the detail…
Yu Chen
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