polardbx-engine | MySQL branch originated from Alibaba Group | Database library

 by   polardb C++ Version: 2.0.0 License: Non-SPDX

kandi X-RAY | polardbx-engine Summary

kandi X-RAY | polardbx-engine Summary

polardbx-engine is a C++ library typically used in Database applications. polardbx-engine has no bugs, it has no vulnerabilities and it has low support. However polardbx-engine has a Non-SPDX License. You can download it from GitHub.

PolarDB-X Engine is a MySQL branch originated from Alibaba Group. It is based on the MySQL official release and has many features and performance enhancements, PolarDB-X Engine has proven to be very stable and efficient in production environment. It can be used as a free, fully compatible, enhanced and open source drop-in replacement for MySQL. PolarDB-X Engine has been an open source project since October 2021. It is being actively developed by engineers from Alibaba Group, Everyone is welcomed to get involved. For further information on PolarDB-X Engine or additional documentation, visit: PolarDB-X Engine Overview For further information about x-engine, please ref: X-Engine Storage Engine.
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              polardbx-engine has a low active ecosystem.
              It has 324 star(s) with 98 fork(s). There are 26 watchers for this library.
              There were 2 major release(s) in the last 12 months.
              There are 14 open issues and 13 have been closed. On average issues are closed in 2 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of polardbx-engine is 2.0.0

            kandi-Quality Quality

              polardbx-engine has no bugs reported.

            kandi-Security Security

              polardbx-engine has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              polardbx-engine has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              polardbx-engine releases are available to install and integrate.

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            polardbx-engine Key Features

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            polardbx-engine Examples and Code Snippets

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            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 polardbx-engine

            You can download it from GitHub.

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