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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is there any way to truncate table in TDengine database?
I know that in some relational database like MySQL, you can truncate table by using
truncate table table_name
Does TDengine support truncate table, or is there any other way to do it?
Alex
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how to build TDengine with address sanitizer?
I am trying to use go connector to query some data from TDengine database, but the memory cost stays at a very high level without going down, I suspect that there is a memory leak issue. Since address sanitizer is a nice tool to find out the memory…
Alex
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How to use TDengine 's query_a() api in c
By reading TDengine C API reference. I see that TDengine support async APIs and one of then which is called query_a(). And I'm new to C. I want to call this API in multiple thread.
The API instructions are as follow:
// taos: The database…
xiaolei
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What is the ref module of TDengine database?
What is the ref module of TDengine database?
I could see some API like this:taosCloseRef(int rsetId),int taosOpenRef(int max, void (*fp)(void *)),and that is not all.
but what is it for?
Yu Chen
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Difference between .NET Framework, .NET Standard, .NET Core and .NET 5
I built a C# application, my target framework was .NET Framework 4.72. While I used TDengine C# connector, and its target framework is .NET Standard 2.1 and .NET 5.
While I reference these package in the project, I always get an error while…
xiaolei
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How do I install taosBenchmark when building TDengine?
I have a MacOS computer with the M1 chip and I am running a virtual machine with Ubuntu 20.04.2 with ARM64. I built TDengine following the documentation on the GitHub page at https://github.com/taosdata/TDengine but when I tried to run the demo…
Sean E.
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How to import InfluxDB data into TDengine database?
I am handling a lot of time-series data. We have history data stored in InfluxDB.
I can export the data from InfluxDB according to Export data from InfluxDB.
Then how do I import them to TDengine database?
superman
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Why TDengine database second service not write log into logDir?
Why TDengine database second service not write log into logDir?
I use taosd -c /work/taos63000/config/taos.cfg to start it
but it didn't write log into logDir of /work/taos63000/config/taos.cfg
May I know why ?
Yu Chen
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why TDengine database could not store "La" and "la" as column name together?
when I ran
create table t10 (ts timestamp,la int,`La` int);
it would tell me duplicated columns, I guess it is a bug ,right?
Yu Chen
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error reported when writing influx line protocol data to TDengine
the request body is something like:
type_61e753468ecb3800497311bd_19gqMPJ3Os1,ct_name=ct_type_19gqMPJ3Oso_19gBnvupzB6,deviceId=19gBnvupzB6…
hook capt
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TDengine alert rule can not run
My TDengine graph works fine, but the alert rule can not run. I got this detailed error message "tsdb.HandleRequest() error Could not find executor for data source type: tdengine-datasource".
version info：
system 14.04.1-Ubuntu,
grafana…
hook capt
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use C# connector to insert Chinese into TDengine 2.4.0.16 but got Illegal byte sequence
use TDengine.Query(conn, commandText);
It returned intPrt value is not 0,
TDengine.Error() show Illegal byte sequence
anyone know how to resolve?
hook capt
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what is streaming-computing of TDengine database?
what is streaming-computing of TDengine database?
As I see, there is only Continuous Query. but I think it is just a part of streaming computing not completed.
Yu Chen
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Is TDengine suitable to store large text fields?
I need to migrate my database from PostgreSQL to the TDengine since most of them are time-series data. But there is a text field in the table for storing large chunks of text.
May I know if TDengine is suitable to store large chunks of text with any…
hook capt
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2 answers
cann't find taos.dll while using `make install` on windows
I tried to build TDengine on window followed the instruction on Build TDengine On Windows platform:
using the command:
mkdir debug && cd debug
"c:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" < x64 |…
xiaolei
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