TDengine | open source , high-performance , cloud native time | Database library

 by   taosdata C Version: ver-3.0.5.0 License: AGPL-3.0

kandi X-RAY | TDengine Summary

kandi X-RAY | TDengine Summary

TDengine is a C library typically used in Database applications. TDengine has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has medium support. You can download it from GitHub.

TDengine is a high-performance, scalable time-series database with SQL support. Its code including cluster feature is open source under GNU AGPL v3.0. Besides the database, it provides caching, stream processing, data data subscription and other functionalities to reduce the complexity and cost of development and operation. TDengine differentiates itself from other TSDBs with the following advanatages. TDengine can be widely applied to Internet of Things (IoT), Connected Vehicles, Industrial IoT, DevOps, energy, finance and many other scenarios.
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            kandi-support Support

              TDengine has a medium active ecosystem.
              It has 21461 star(s) with 4670 fork(s). There are 708 watchers for this library.
              There were 5 major release(s) in the last 12 months.
              There are 990 open issues and 2970 have been closed. On average issues are closed in 15 days. There are 47 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of TDengine is ver-3.0.5.0

            kandi-Quality Quality

              TDengine has no bugs reported.

            kandi-Security Security

              TDengine has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              TDengine is licensed under the AGPL-3.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              TDengine releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed TDengine and discovered the below as its top functions. This is intended to give you an instant insight into TDengine implemented functionality, and help decide if they suit your requirements.
            • insert function
            • Query data process .
            • Print configuration information .
            • insert data into table
            • Main entry point .
            • create db tables
            • Execute a query function
            • callback for fetch_callback
            • drop databases
            • Execute a SQL statement
            Get all kandi verified functions for this library.

            TDengine Key Features

            No Key Features are available at this moment for TDengine.

            TDengine Examples and Code Snippets

            No Code Snippets are available at this moment for TDengine.

            Community Discussions

            QUESTION

            How to create or alter a DB schema dynamically (at run time) using Gramex FormHandler
            Asked 2022-Apr-08 at 06:35

            I want to be able to (at run time) create or alter a DB schema dynamically on a particular event (e.g. click of a button) using FormHandler microservice of Gramex.

            ...

            ANSWER

            Answered 2022-Apr-08 at 06:20

            You can do it using queryfunction of FormHandler which can modify the query based on the query parameters passed in the url.

            Refer the link below for more https://gramener.com/gramex/guide/formhandler/#formhandler-queryfunction

            Source https://stackoverflow.com/questions/71792397

            QUESTION

            What does stopping the runtime while uploading a dataset to Hub cause?
            Asked 2022-Mar-24 at 01:06

            I am getting the following error while trying to upload a dataset to Hub (dataset format for AI) S3SetError: Connection was closed before we received a valid response from endpoint URL: "<...>".

            So, I tried to delete the dataset and it is throwing this error below.

            CorruptedMetaError: 'boxes/tensor_meta.json' and 'boxes/chunks_index/unsharded' have a record of different numbers of samples. Got 0 and 6103 respectively.

            Using Hub version: v2.3.1

            ...

            ANSWER

            Answered 2022-Mar-24 at 01:06

            Seems like when you were uploading the dataset the runtime got interrupted which led to the corruption of the data you were trying to upload. Using force=True while deleting should allow you to delete it.

            For more information feel free to check out the Hub API basics docs for details on how to delete datasets in Hub.

            If you stop uploading a Hub dataset midway through your dataset will be only partially uploaded to Hub. So, you will need to restart the upload. If you would like to re-create the dataset, you can use the overwrite = True flag in hub.empty(overwrite = True). If you are making updates to an existing dataset, you should use version control to checkpoint the states that are in good shape.

            Source https://stackoverflow.com/questions/71595867

            QUESTION

            MongoDB query all documents contains ids that does not exist anymore in the collection
            Asked 2022-Mar-02 at 03:10

            I ran into an issue that I haven't found a solution to yet. I have a collection with dozens of documents that every one of the documents contains a list (let's use the name 'list' as a key for that list) with ids of other documents(they are connected in some way).

            some of the documents in the collection were deleted and I try to find all the documents that contain the ids of documents that do not exist anymore in the collection.

            example:

            As to the example above: I want to get the document with the id : 5e3266e9bd724a000107a902 because it contains a list with the id 5e32a7f7bd724a00012c1104 that does not exist anymore.

            ...

            ANSWER

            Answered 2022-Mar-02 at 03:10

            Here is a solution that works exploiting $lookup on the same collection (think "self-JOIN"):

            Source https://stackoverflow.com/questions/71313345

            QUESTION

            Is it possible to change the active user for a PostgreSQL connection?
            Asked 2022-Mar-02 at 02:49

            Given a connection to the PostgreSQL database for user 'Alice', is there a statement that could be executed to switch to user 'Bob'?

            Motivation: Looking to avoid having separate pools for each user (i.e. re-use a connection that was previously used by another user).

            ...

            ANSWER

            Answered 2022-Mar-01 at 22:09

            In PgAdmin open part Login/Group roles. Right click and in opened window enter new user, set permission and defined password. After refresh you will see e.g. Alice in Login/Group roles. After that open database with logged user. Click on something like mondial/postgres@PostgresSQL (db/user@server) and choose new connection. Chose which db wish to use and user wich will be connected on db.

            After that you will have mondial/Alice@PostgresSQL

            Source https://stackoverflow.com/questions/71315070

            QUESTION

            null is not an object Sqlite + ReactNative expo Typescript
            Asked 2022-Feb-28 at 12:43

            I made login page and now i'm trying to replace simple user.js to Sqlite Database (react-native-sqlite-storage). When i launch my project with database, i get this error.

            My Code

            ...

            ANSWER

            Answered 2022-Feb-28 at 12:43

            The problem consist from creating connection in separate file (must be create in App).

            Source https://stackoverflow.com/questions/71282268

            QUESTION

            Indexing for GROUP BY in CosmosDB
            Asked 2022-Feb-28 at 09:33

            As the title suggests I'm wondering how to create an effective index for GROUP BY queries in CosmosDB.

            Say the documents look something like:

            ...

            ANSWER

            Answered 2021-Sep-27 at 20:51

            Currently GROUP BY does not not yet use the index.

            This is currently being worked on. I would revisit sometime towards the end of the year to verify it is supported.

            Source https://stackoverflow.com/questions/69348335

            QUESTION

            Is there a way to implement cassandra "decimal" Datatype in Golang
            Asked 2022-Feb-15 at 12:13

            i have a database field that is set to decimal, while in my Go project i am having problem choosing which datatype can be use. each time i send a create reuquest to my code, i get a "cannot marshal 'decimal' into #golang datatype#

            this my database schema

            ...

            ANSWER

            Answered 2022-Feb-15 at 12:13

            If you look into documentation for Gocql package, then you will see that the decimal is mapped to the Go's infDec data type (see its doc) so you need to use it instead of Float64.

            Source https://stackoverflow.com/questions/71125652

            QUESTION

            How do I copy a big database table to another in ABAP?
            Asked 2022-Feb-03 at 09:29

            I want to copy one big database table to another. This is my current approach:

            ...

            ANSWER

            Answered 2022-Jan-20 at 12:45

            You can also "copy on database level" from within ABAP SQL using a combined INSERT and SELECT:

            Source https://stackoverflow.com/questions/70763128

            QUESTION

            Upgrade H2 version 2.0.202 from 1.4.200
            Asked 2022-Jan-31 at 01:05
            1. Hi, we are trying to upgrade 2.0.202 from 1.4.200. We are getting an error related to running our tests. While persisting data we are getting below error. Any suggestions?

            Caused by: org.h2.jdbc.JdbcSQLIntegrityConstraintViolationException: NULL not allowed for column "***"; SQL statement:

            ...

            ANSWER

            Answered 2022-Jan-31 at 01:05

            You cannot use H2 2.0.202 with Hibernate ORM 5.6, because H2Dialect in Hibernate ORM produces invalid SQL for H2, H2 2.x is more restrictive and doesn't accept it by default.

            H2 2.0.204 and later versions (current version is 2.1.210) have a LEGACY compatibility mode, it can be enabled by appending ;MODE=LEGACY to JDBC URL. This mode provides some limited compatibility with old versions of H2.

            This trick shouldn't be required for Hibernate ORM 6.0 when it will be released.

            Edited

            Changes for H2 2.x.y were backported to Hibernate ORM 5.6.5.

            Source https://stackoverflow.com/questions/70818631

            QUESTION

            What are the backend service for flutter?
            Asked 2022-Jan-29 at 13:44

            I am confused in choosing database service for my flutter application. I started using firebase but as it is based on NoSQL , But if i am getting the need for rows and columns for my data which backend service should i use!.

            ...

            ANSWER

            Answered 2022-Jan-23 at 23:20

            I think it depends on how you want to access the data. If you're wanting to stream and push notifications, I would stick with Firebase. If you just need to get and post data, focus more on api implementation. With a solid rest api, you can change up your database/backend all you want and just have to update the api, not your app.

            I, personally, suggest searching around for data modeling techniques in Firebase. Check out the Fireship channel on youtube. In his channel's videos, search for modeling and you'll find a ton of info on Firebase data modeling. Many will reference Angular, but the techniques are the same.

            Source https://stackoverflow.com/questions/70827265

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install TDengine

            TDengine includes few components developed by Go language. Please refer to golang.org official documentation for golang environment setup. Please use version 1.14+. For the user in China, we recommend using a proxy to accelerate package downloading.
            If you use Debian or Ubuntu system, you can use 'apt-get' command to install TDengine from official repository. Please use following commands to setup:.

            Support

            For user manual, system design and architecture, engineering blogs, refer to TDengine Documentation(中文版请点击这里) for details. The documentation from our website can also be downloaded locally from documentation/tdenginedocs-en or documentation/tdenginedocs-cn.
            Find more information at:

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            https://github.com/taosdata/TDengine.git

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            gh repo clone taosdata/TDengine

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            git@github.com:taosdata/TDengine.git

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