JoinBase Tips Series #1: Quick Start JoinBase
Posted February 22, 2023 by jblchen ‐ 5 min read
Let's take a minute to get started quickly and complete your first query in JoinBase!
Currently, JoinBase supports Linux distributions with modern kernels, such as the latest Ubuntu 20.04.4+ LTS . ( Windows WSL2 with latest kernel also works fine.)
Supports mainstream 64-bit CPU architectures (X86-64, ARM, RISC-V) and supports everything from $6 ARMv8 SBCs to AWS 384 cores (z-series).
Currently, the x86-64v3 (AVX2+) version is available for public download. More downloads for other arch versions are coming soon.
Compared with the cumbersome installation process of other databases, the installation of JoinBase is very fast. Click here to download the free JoinBase.
Compared with the cumbersome installation process of other databases, JoinBase does not need to be installed: JoinBase is provided in the form of a compressed package, just unzip it to any directory on your machine, and run it in this directory.
Install Client Console
You should choose one client to manage JoinBase. We suggest using the most popular PostgreSQL protocol for starting. In Ubuntu, you can try the following commands to get PostgreSQL client:
sudo apt-get update sudo apt-get install postgresql-client
JoinBase supports any PostgreSQL-compatible client and driver. For more information and use cases, please refer to: PostgreSQL Interface
Configure and start the server
Before proceeding, you should change the following items in the conf file:
meta_dirs = ["path_to_your_meta_dir"] data_dirs = ["path_to_your_data_dir"] wal_dir = "path_to_your_wal_dir" log_dir = "path_to_your_log_dir"
NOTE: If you do not change the path, the file will be saved to the default path.
After completing the above configuration, you can start the JoinBase server from the root directory of JoinBase in the following way:
When you see the following content, JoinBase has started successfully!
JoinBase started successfully
The JoinBase system follows the concept of a whitelist. Even if you have started the server, if you do not create an account, you can not use it.
So, in the next step you should add some users via our base_admin tool.
Create a user with username abc and password 123 using the following subcommand create_user:
base_admin create_user abc 123
It is recommended that you do not provide input in place of passwords. If no password is provided, the command will ask you to supply it without displaying it.
Connect to JoinBase
After setting up the abc user, you can log in as that user to connect to our PostgreSQL wire protocol compliant server.
psql -h 127.0.0.1 -p 5433 -U abc
JoinBase's own language choice supports more intuitive MySQL-style management statements rather than PostgreSQL's \startup commands, although JoinBase also supports the PostgreSQL client.
This process is meaningless unless we have some tables to write data to or read data from.
The structure of the JoinBase table is directly mapped from the MQTT message. Through the mapping, the json payload of an MQTT message will be extracted and saved into the target table. See more information about MQTT message mapping in the MQTT messages page.
Let's create a database and a table to store data.
create database abc; use abc;
CREATE TABLE IF NOT EXISTS t(a Nullable(UInt32),b Int64);
We can now make test queries against the new table.
select * from abc.t; SELECT 0
Yes, there is no data queried in the new table t. Let's inject sample data into the table.
You can use all provided interfaces to ingest data, such as HTTP interface, MQTT interface, and PostgreSQL interface.
This time we demonstrate the PostgreSQL interface. Regarding the use of other interfaces, you are welcome to pay attention to our follow-up articles, and we will introduce them in detail.
INSERT INTO abc.t VALUES (1,2);
In this way, the data is successfully inserted into the newly created table.
Carry out testing
Returns the query that just got no results.
Now, let's try again.
select * from abc.t;
very good! When you see the following results, it means you have successfully completed the query.
A thousand miles begins with a single step. Congratulations on completing your first query on JoinBase!
Yes, compared to traditional databases or big data platforms, JoinBase is super easy to use!
JoinBase provides a lot of value beyond the peers of this era. We sincerely invite more users to join our community. JoinBase can help you!
Download JoinBase: Download the full-featured version of JoinBase and SmartBase for free now , so that your AIoT digital capabilities will be one step ahead.
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