SQL Studio is a multi-database management tool developed by Maicong Software. It provides three versions of software packages for Windows, Linux and MacOS, and supports both Chinese and English languages. SQL Studio is written in Java and compiles with JDK 8 by default.
Download here: [SQLStudio]
(http://www.maicongs.com/#/home/web)
SQL Studio is free for individual developers, and the latest version is SQL Studio 1.4.0. Currently, the databases supported by SQL Studio 1.4.0 include not only mainstream databases such as MySQL, Oracle, and PostgresSQL, but also domestic databases such as Wuhan Dameng and Renminda Jincang .
And the latest version has fully supported Hadoop . It is believed that subsequent versions of SQL Studio will support more types and quantities of databases. 
Compared with the client development of traditional SQL tools, SQL Studio adopts a pure Web-based development model. The biggest advantage of this mode is that it is free of installation, easy to use, and more flexible .
It can be said that the birth of SQL Studio has given SQL developers a free and trustworthy SQL development tool to choose from in addition to Navicat paid version and Navicat cracked version.
Unlike Navicat, which adopts a client-side development model, SQL Studio adopts a pure Web-based development model, which saves the cumbersome installation and configuration process. After decompressing the software package, it can be started with one click, which is really convenient. 
Since the JDK environment is encapsulated in the downloaded software package, the size of the three software packages is several hundred MB: the size of the Windows software package is 299MB, the size of the MacOS software package is 156MB, and the Linux version is 262MB. I downloaded the Windows software package, and I will use this version as the basis for the experience.
The startup process is very simple, and there is no need to consider the installation and configuration of the JDK environment. After decompressing the package, double-click the "maicong-sqlstudio_startup" batch file directly. 
After waiting a few seconds, the user interface of this product can be launched in the default browser. The system prompts that the default administrator user name for the first login is "maicong", but the password can be entered arbitrarily, and the administrator can modify it after entering the system.
Functional experience
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 attribute 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 memory. 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. 
Super large data volume support: Query tens of millions of data in milliseconds , export 3000W faster than Navicat, and expand 1W tables in a stable and silky smooth without lagging.
Column filtering can be performed in the result column, and the column data you want to see can be manually filtered to make viewing data more convenient.
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.