Как установить sqlitestudio в linux mint

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Как установить sqlitestudio в linux mint

SQLite is a free, lightweight, and command-line database application. It is an efficient database engine that is implemented in C. It is a cross-platform database application. Like SQL and MySQL, SQLite is also a relational database. It is widely used in combination with Android and web applications. SQLite is leveraged with an SQLite browser. SQLite Browse is a graphical and free software platform for developing and designing, SQLite databases. In this post, you will get to know the installation procedure of SQLite 3 and SQLite Browser on Linux Mint 20 Ubuntu 20.04.

Installing SQLite 3 in Ubuntu 20.04 and Linux Mint 20

To install SQLite 3 on Ubuntu 20.04 and Linux Mint 20, perform the following steps:

Step 1: Update apt repository cache

Before installing any application or package, it is recommended to update the system apt repository cache using the following command:

Step 2: Update apt-cache

Next, upgrade the apt repository cache using the following command:

Step 3: Install SQLite 3

Alright! Now we are ready to install SQLite 3 on Ubuntu 20.04 and Linux 20. SQLite is available through Ubuntu 20.04 and Linux Mint 20 repositories. Install SQLite 3 using the following command:

Step 4: Verify the installation

After installing SQLite 3, we can view the installed version of SQLite 3. Additionally, it also verifies the installation. Run the below-given command to do so:

Installing SQLite browser in Ubuntu 20.04 and Linux Mint 20

The SQLite browser can be installed in Ubuntu 20.04 and Linux Mint 20 through the below-given steps:

Step 1: Update apt repository cache

Before installing the SQLite browser, update the system’s apt repository cache with the following command:

Step 2: Install SQLite browser on your Ubuntu 20.04 and Linux Mint 20

The SQLite browser can be installed by executing the following command:

The command line will display a prompt. You are supposed to press “y” to continue the installation process. However, if you want to cancel the installation process then press ‘n’ and hit enter.

Step 3: Launch SQLite browser

After the successful installation, click on the application menu and search for SQLite browser and open it.

It is the main window of SQLite bowser.

Removing SQLite 3 from Ubuntu 20.04 and Linux Mint 20

At any point, if you want to remove or uninstall the SQLite 3 from your system, run the following command to do so:

Conclusion

SQLite 3 is a free and efficient database engine. This article explains how to install SQLite 3 on Ubuntu 20.04 and Linux Mint 20.

About the author

Kamran Sattar Awaisi

I am a software engineer and a research scholar. I like to write article and make tutorial on various IT topics including Python, Cloud Computing, Fog Computing and Deep Learning. I love to use Linux based operating systems.

Instructions_for_compilation_under_Linux

That’s it. You can copy /home/user/projects/sqlitestudio/output/portable/SQLiteStudio directory to wherever you like and then delete whole /home/user/projects/sqlitestudio . You don’t need it anymore.

Manual compilation — short description

• Get a Qt library
• Download SQLiteStudio sources and plugins, see downloading source code.
• Setup source directories like described here: source code layout
• Create and go to directory where you want the output files to be created and call: qmake path/to/SQLiteStudio3/project/directory
• Then call: make
• Repeat 2 previous steps for Plugins directory.
• Binaries can be found in ../output . Enjoy 😉

Manual compilation — more detailed description

If you’re running Linux like Ubuntu, Fedora, Mint, or similar, be aware that all dependencies will require a *-dev package, obviously, so C/C++ headers are available for compilation.

• gcc — 4.8 or later (SQLiteStudio project uses C++11 standard) — all Linux distributions provide it.
• Qt 5.12 or later (required Qt modules: core, gui, widgets, script, network, xml, svg, uitools, printsupport) — it’s usually installed in most of popular Linux distributions, just make sure to have at least version 5.3 ( qmake —version )
• readline — for Command Line Interface only. This is available in most Linuxes. Compilation of CLI can be disabled. Click here for more details.
• tcl — dependency for ScriptingTcl plugin (optional — you can disable compiling ScriptingTcl by editing the Plugins.pro file). You get it in most distributions by default, or you can install the ActiveTcl distribution.

Downloading source code

Downloading source code tar.gz package (recommended)

The source code can be downloaded from the official download page: http://sqlitestudio.pl/?act=download

Downloading from GitHub

Alternatively you can download a current development source code from GitHub..

• Main source code (the application) and standard plugins:

git clone https://github.com/pawelsalawa/sqlitestudio.git sqlitestudio

Remember, that this is unstable code, being developed per daily basis.

Preparing source code

Source code layout

During compilation the «output» directory will be created, just next to SQLiteStudio3 and Plugins. It will contain compilation objects in «build» subdirectory and the final executables in «SQLiteStudio» subdirectory.

You need to prepare «build directory» for output files:

Project is based on Qt framework, so each project (main, plugins) will basically require 2 steps (don’t execute them like this yet, keep reading, we will execute them later, but with some arguments):

Note, that if you have multiple Qt versions installed on your system, you will need to make sure which qmake your running. Test it:

If it’s not the one you want to build with, then you need to type full path to the qmake you want, for example:

External libraries, depencencies

Some plugins might depend on some external libraries. If dependency headers and libraries are in unusual directories, you will have to provide those directories in a standard manner for qmake , for example:

Don’t execute it yet. This is just an example of additional parameters for qmake that you might need later on.

We will apply what we learned from above:

That’s it! Compilation will start. Compilation process will produce 2 kinds of output files — temporary build files (makefiles, c++ object files, etc) in /home/user/projects/sqlitestudio/output/build and output executables and libraries in /home/user/projects/sqlitestudio/output/SQLiteStudio .

To force portable distribution under Linux/Unix you have to add one more option when executing qmake :

This applies for both the application and plugins compilation.

Portable dependencies distribution: SQLiteStudio has couple of dependencies which will have to be shipped together with the portable distribution in order for the application to work. All those dependencies have to be copied into the output directory, where the SQLiteStudio application was created. See List of portable dependencies which you have to copy.

Files in the secondary directory are the subject of interest. You have a working application binary there.

That’s all. Plugin binary will be placed in /home/user/projects/sqlitestudio/output/SQLiteStudio/plugins

Excluding some of plugins

If you don’t want to compile some plugin (for example DbSqlite2, because you don’t have its required dependency), then just edit Plugins.pro file and remove it from the list.

External (unofficial) plugins

For each plugin you will need to add one build directory more, so it has it’s own:

You have to repeat the same steps for each plugin directory.

This steps does the final package building or installing:

Linux portable package and tar.gz

To build Portable distribution package go to scripts/linux directory and run create_portable.sh . If you’d like to use custom Qt installation, please pass full path to its qmake as an argument to the script.

Linux OS managed installation

In case of Unix-like application distribution you will want to install everything in the installation path, by calling in the build and also in build/Plugins directory:

Optional compilation settings

Additional paths for headers and libraries

You might want to provide paths for headers and libraries that the project depends on (for SQLite library for example). Here’s how you do it:

Compile-time directories definition

You can pass additional flags either to qmake if you want to define some compile-time values of the application. Here are flags and what do they mean:

PLUGINS_DIR=/path/to/plugins	Additional directory to look up for plugins.
ICONS_DIR=/path/to/icons	Additional directory to look up for icons.
FORMS_DIR=/path/to/forms	Additional directory to look up for *.ui files (forms used by plugins).

Example of how to do it:

If you have multi-core CPU, you can speed up compilation by passing «-j » option to make, where is number of cores you want to use, for example:

Since version 3.0.6 automatic updates are compiled always when the portable distribution is being compiled (and only then). Otherwise automatic updates are disabled.

Before 3.0.6:

Prior to version 3.0.6 automatic updates were enabled by default and could be disabled by flag NO_AUTO_UPDATES passed to qmake:

Custom installation directories

When compiling Unix-like application distribution (default under Linux) you may want to specify where the libraries are installed and where binaries are installed. You can do it by passing additional options to qmake:

By changing LIBDIR you are also changing a default path for PLUGINS_DIR defined at Compile-time directories definition, so the plugins dir will be a sqlitestudio subdirectory in LIBDIR , unless you overwrite PLUGINS_DIR by your custom path.

Linking with system-provided libraries

It’s possible to link DbSqliteCipher and DbSqliteWx plugins with appropriate SQLCipher and wxSQLite3 libraries provided by system. This is a common practive under unix systems to re-use shared libraries.

DbSqliteCipher

To link dynamically with system-provided SQLCipher use qmake like this, when executing it for Plugins.pro:

/path/to/qmake «SQLCIPHER_LIB=-lsqlcipher» path/to/Plugins.pro

This will exclude sqlcipher.c from compilation and will link against system library.

DbSqliteWx

To link dynamically with system-provided wxsqlite3 use qmake like this, when executing it for Plugins.pro:

/path/to/qmake «WXSQLITE_LIB=-lwxcode_gtk2u_wxsqlite3-3.0» path/to/Plugins.pro

This will exclude wxsqlite3.c (and other generic wxsqlite code) from compilation and will link against system library.

How to install and use SQLite

SQLite is a lightweight Database Management System (DBMS) which allows its users to implement a relational schema and run SQL queries over it, without the need for a standalone database server. This is convenient because the setup is minimal and the database can be easily bundled with application files.

SQlite is portable, which means that you can install it on any computer, even when you do not have Administration privileges. It is also quite interesting for mobile development in platforms such as Android or iOS.

SQLite implements ACID (Atomic, Consistent, Isolated, and Durable) transactions. This makes it possible to rollback all changes made during transactions in the event of a system crash or power loss.

SQLite does not, however, implement the SQL Standard.

For our classes we will be using SQLite3.

Installing SQLite3

All FEUP computers have sqlite3 already installed, so you should not need to carry out this step in those machines. If you want to install it in your personal laptop for home work or study, read on.

Manual Installation (portable)

1. Download the precompiled binaries for sqlite-tools from the website and unzip them to a folder in your computer. Please choose the appropriate file depending on your operating system (Windows, Linux or macOS).
   • For Windows, I recommend you unzip the download into C:\sqlite3 . For other OS’s you should use your home folder, like

Automatic installation

macOS

1. Install HomeBrew
2. Open Terminal
3. Type brew install sqlite3 and press Enter.

Linux (debian-based distros such as Ubuntu and derivatives)

1. Open Terminal emulator
2. Type sudo apt-get update && sudo apt-get install sqlite3 and press Enter.

Installing the Graphical User Interface

We will also be using a GUI (Graphical User Interface) to manipulate our SQLite databases. SQLiteStudio is free and runs on every Operating System. Detailed installation instructions for Windows, Mac and Linux are available here.

MacOS

For macOS you can use homebrew. Just run the following command: brew cask install sqlitestudio .

Linux

For Linux, unzip the installer in the downloads page. Open the Terminal, cd to the Downloads folder and make the installer executable by running the command chmod +x ./InstallSQLiteStudio-3.2.1 . Then run it: ./InstallSQLiteStudio-3.2.1 . The installer should start up.

Starting SQLite

In a FEUP machine

1. Press the Windows Key + R . A small window will pop up.
2. Type cmd.exe and press Enter.
3. A command line window will pop up.
4. Type sqlite3 and press Enter.
5. You will now be in the SQLite3 command line.

In your own computer

To create a database you must first navigate to the folder where sqlite3 is installed. Assuming that you unzipped the downloaded files to C:\sqlite as previously explained, do this:

1. Press the Windows Key + R . A small window will pop up.
2. Type cmd.exe and press Enter.
3. A command line window will pop up.
4. Type C:
5. Type cd C:\sqlite3
6. Type sqlite3.exe and press Enter.
7. You will now be in the SQLite3 command line.

Useful commands

Command	Description
.databases	List names and files of attached databases
.dump	Dump the database or a specific table in an SQL text format
.exit / .quit	Exit the SQLite shell
.headers	Turn display of headers on or off, when displaying output of SQL statements
.help	Show available commands
.import	Import data from a file into a table
.mode	Set output mode
.open	Open a database from a file
.output	Redirect the output to a file
.read	Execute SQL statements from a file
.save	Write in-memory database into a file
.schema	Show the CREATE statements used for the whole database or for a specific table
.show	Show current values for various settings
.show	List names of tables

Creating your first database

When you first run sqlite3 , any changes will be saved in memory only. This means that if you close the window, all changes will be lost.

You can see the list of all commands by typing .help :

Executing SQL statements

There are two main ways of running SQL in the prompt; the first is to write code directly, the other is to create a .sql file and read it in the prompt.

Here is a piece of code to get you started:

You should see this result:

Reading from a file

Another, more powerful way is to save the sequence of commands and statements in a text file (say, “helloworld.sql”), thus creating a script that you can run via .read. This works as long as you have the sql file in the same folder as you are running sqlite3:

Saving to a file

In any case, you can later save the SQL statements that you’ve used both to create the database (CREATE TABLE statements) and to populate its tables (INSERT INTO statements). For that, you can use the .schema (for the schema creation statements only) or the .dump` (for both creation and insertion statements) commands:

If you want to save these statements into a file you can later read from (using the .read command as shown above), all you need to do is to use the .output command to redirect any output to a file:

The contents of the “helloworld.sql” file should be the statements listed above.

Keeping the Database state in a file

The state of the database can be maintained persistently in a file, avoiding the need to store SQL statements that can be later read (using .read as shown above). In order to do that, you simply need to add an argument to the sqlite3 application: the name of the database to use.

If the file provided as an argument to sqlite3 does not exist, SQLite will create it automatically. Any changes made in the database are persistently stored in that file, without the need for specific save commands (such as .dump). The following example illustrates the creation and use of a persistent database:

An alternative to using the database file name as an argument to sqlite3 is to use the .open command within SQLite. This still ensures that any changes to the database are automatically stored in the persistent file. Similarly, if no file was provided as an argument to sqlite3 you can use the .save command to save the database to a file. Notice however that this does not trigger automatic saves of any additional changes that are made in the database.

Pragma Statements

The PRAGMA statement is an SQL extension specific to SQLite and used to modify the operation of the SQLite library or to query the SQLite library for internal (non-table) data.

Syntax

A PRAGMA statement is formed by the keyword PRAGMA followed by the actual “pragma” that is being defined. A pragma has a name and can take one argument. The argument may be in parentheses or separated from the pragma name by an equal sign. The two syntaxes yield identical results. In many pragmas, the argument is a Boolean and can be one of: 1/yes/true/on; 0/no/false/off.

PRAGMA foreign_keys

This is a very important pragma, as it may be used to set the enforcement of foreign key constraints.

Consider the following SQL statements, which violate a foreign key constraint:

Since in the current version of SQLite foreign key constraint enforcement is disabled by default, loading these statements from a file, say fk.sql, does not raise any error:

If we turn on foreign key constraint enforcement, we get an error detecting the constraint violation:

How to install SQLiteStudio?

And an installer version, which tells me the following thing by clicking it:

2 Answers 2

Open a terminal in that directory and run the following commands:
$ chmod +x Installer
$ ./Installer

Or a GUI method would be to:

1. Right-click on the installer file.
2. Select «Properties» from the pop-up menu.
3. Click on the «Permissions» tab.
4. Check the «Execute: __ Allow executing file as program» box.
5. Click on the installer program again and select «Run» from the pop-up menu.

As a matter of preference, in windowing operating system interfaces, I prefer to download installers to my Downloads folder and create a sub-folder for the application. That way I know what the installer is for; no matter how obscurely it is named and I have all the installers for various versions of an application in one place.

In Ubuntu, I prefer to use apt or the Ubuntu Software app, but neither was an option for this particular program.