If you pay attention to the A-share market in 2023, you will find that all walks of life have set off an upsurge of the "localization substitution" movement. Not only chips, but also fields such as new energy, medical equipment and even software have also accelerated the process of localization.
For a long time, China's software industry has relied on international giants. For example, Microsoft is the main operating system, Oracle and MySQL are the main databases, and most of the underlying tools and development platforms are foreign software.
However, with the changes in the international environment, more and more companies have begun to use domestic software based on the demand for supply chain security , which has brought opportunities for domestic software companies to take off.
Recently, the boss asked the company to fully use domestic database development and management tools . After researching many tools, I was pleasantly surprised by a new product. It's almost used, and today I will show you this free tool: SQL Studio .
1. Overview of SQL Studio
The introduction on the official website is more pertinent, so I moved it directly:
SQL Studio is a web version database management development tool that can create multiple connections, allowing you to connect to PostgreSQL, MySQL, SQLite, SQL Server, Oracle, DM (Dameng), KingBase (Renda Jincang) simultaneously from a single application and other databases. 
The intuitive and perfect graphical user interface and powerful SQL editor function of the main window greatly simplifies your database management and development work, team collaboration anytime and anywhere, and complete auditing functions, allowing users to achieve efficient and safe SQL development, individual developers It can be used for free forever. (This sentence is more important)
2. Download and install SQL Studio
The first special feature of SQL Studio: Web version tools.
The installation package on the official website is divided into two types: with JDK version and without JDK version, to prevent users from not having a Java environment.
After decompressing the green installation package, run the terminal shell script directly
. Click any key to start it immediately, and jump out of the browsing page to display the tool login interface . 
What are the advantages of the web version
a Once deployed, team members can use it, and the hardware resources occupied are all on the server; as long as there is a log-in software link, account number, and password, this tool can be used on any device at any time
b Eliminates the cumbersome tool installation configuration and upgrade process. (Not too friendly for teamwork and teaching scenarios)
c The user management function stipulates that only administrators can create new accounts, and only administrators can add and delete data sources, which facilitates team collaboration and centralized management, thus avoiding many security issues
3. SQL Studio connects to the data source
The second special feature of SQL Studio: it supports domestic databases very well .
Enter SQL Studio, the first is to connect to the data source, click the "Add Data Source" button on the "Data Configuration" interface.
Select the database type and connect. 
Fill in the relevant information in the basic settings, and after the test connection is completed, you can successfully connect to the database. 
Connection pool can be configured in advanced configuration.
SQL Studio supports JDBC connection, which can support almost all databases. Not only foreign databases such as MySQL, Oracel, and PostgresSQL, but also domestic databases such as Wuhan Dameng and Renminda Jincang.
The client tools of domestic databases are basically modified from open source or made relatively rough. It is indeed not stable enough, and SQL Studio stands out because of this.
From downloading and starting to logging in and connecting to data sources, it can be done within a minute. Very friendly to novices.
4. SQL Studio operation and function introduction
- The database list on the left can manage database objects visually; the search at the top can also locate specific tables, views, functions, etc.
- You can directly view the table, and the viewing table is divided into an attribute interface and a data interface. The property interface contains information such as columns, constraints, foreign keys, indexes, and DDL. You can modify table names, comments, and table structures, and you can see the SQL statements behind the corresponding modification operations.
- In the system settings, it supports custom modification of jvm initial heap and jvm maximum heap. The data interface displays the specific data in the table. The system displays 50 rows by default, and the number of displayed rows can be manually modified. At the same time, the number of query data and the number of historical data queries can be set independently.
- The "Save" button on the left side of the edit box can save frequently used SQL statements, supports shortcut key operations, and can be directly edited, copied and deleted in the "Saved Queries" below. (which is really handy).
- "Historical query" will display all execution records; "Import and export" will record all data records.
- On the left side of the edit box, there are also functions such as "Execute", "One-key Explain and Execute", "Format", and "Batch Execute". "Batch Execute" is convenient for operations such as brushing the library; "Explain and Execute" helps analyze the performance of SQL statements for optimization.
- Large data volume support: Tens of millions of data can be queried at the millisecond level, and the export speed of 3000W is faster than Navicat, and the expansion of 1W tables is stable and smooth without lagging.
- There is a download button next to the result column, which can export the data; there are two formats of csv and excel.
- Directly generate simple SQL statement templates, one-click copy table and other functions.
- Import and export data, support direct import of csv files
- Automatically generate test data: No need to write code anymore, SQL Studio will automatically generate test data for you, saving worry and effort
