last modified July 5, 2020
Open Mysql Console Mac
C# MySQL tutorial shows how to program MySQL in C#. It covers the basics ofMySQL programming with C#. The examples require C# 8.0+. C# tutorialis a comprehensive tutorial on C# language.
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MySQL
MySQL is a leading open source database management system. It is a multi user, multithreaded database management system. MySQL is especially popular on the web. It is one part of the very popular LAMP platform consisting of Linux, Apache, MySQL, and PHP. Currently MySQL is owned by Oracle.MySQL database is available on most important OS platforms. It runs on BSD Unix, Linux, Windows or Mac OS. MySQL comes in two versions: MySQL server system and MySQLembedded system.
ADO.NET
Open Mysql Console Mac Os
ADO.NET is an important part of the .NET framework. It is a specificationthat unifies access to relational databases, XML files and other application data.MySql.Data is an implementation of the ADO.NET specificationfor the MySQL database. It is a driver written in C# language and is available forall .NET languages.
We include the package to our .NET Core project.
The
MySqlConnection
, MySqlCommand
, MySqlDataReader
, DataSet
, and MySqlDataProvider
are the core elementsof the .NET data provider model. The MySqlConnection
creates a connection to a specific data source. The MySqlCommand
object executes an SQL statementagainst a data source. The MySqlDataReader
reads streams of data from a data source. The
DataSet
object is used for offline work with a massof data. It is a disconnected data representation that can hold data from a variety of different sources. Both MySqlDataReader
and DataSet
are used to work with data; they are used under different circumstances. If we only need to read the results of a query, the MySqlDataReader
is the better choice. If we need more extensive processing of data, or we want to bind a Winforms control to a database table, the DataSet
is preferred.C# MySQL version
If the following program we check the version of the MySQL server.
We connect to the database and get some info about the MySQL server.
We import the elements of the MySQL data provider.
This is the connection string. It is used by the data provider to establish aconnection to the database. We specify the host name, user name, password and adatabase name.
A
MySQLConnection
object is created. This object is used toopen a connection to a database. The using
statement releases the database connection resource when the variable goes out of scope.This line opens the database connection.
Here we print the version of MySQL using the
ServerVersion
property of the connection object. This is a sample output.
C# MySQL SELECT statement
The following example determines the version of MySQL with a SELECT statement.
Program.cs
We check for the version of the MySQL database. This time usingan SQL query.
This is the SQL SELECT statement. It returns the version of the database. The
VERSION()
is a built-in MySQL function. The
MySqlCommand
is an object which is used to execute a query onthe database. The parameters are the SQL statement and the connection object. There are queries which return only a scalar value. In our case, we want asimple string specifying the version of the database. The
ExecuteScalar()
is used in such situations. C# MySQL create table
In the following example, we create a database table and fill it with data.
In the example, we create a
cars
table with eight rows.First we drop the table if it already exists. We use the
ExecuteNonQuery()
method if we do not want a result set, forexample for DROP
, INSERT
, or DELETE
statements.The
cars
table is created. The AUTO_INCREMENT
keyword makes the column auto-incremented in MySQL.Here we insert two rows into the table.
We run the program.
We connect to the MySQL server with the
mysql
tool.We verify the data. The
cars
table was successfully created.C# MySQL prepared statements
Prepared statements increase security and performance. When we writeprepared statements, we use placeholders instead of directly writing thevalues into the statements.
Program.cs
![Open mysql console machine Open mysql console machine](/uploads/1/3/7/2/137294587/348622336.png)
We add a new car to the
cars
table. We use a parameterized command.When we write prepared statements, we use placeholders instead of directlywriting the values into the statements. Prepared statements are faster and guardagainst SQL injection attacks. The
@name
and @price
are placeholders, which are going to be filled later. Values are bound to the placeholders with the
AddWithValue()
method.The prepared statement is executed. We use the
ExecuteNonQuery()
method of the MySQLCommand
object when we don't expect any data tobe returned. C# MySqlDataReader
The
MySqlDataReader
is an object used to retrieve data from thedatabase. It provides fast, forward-only, read-only access to query results. Itis the most efficient way to retrieve data from tables. We get all rows from the
cars
table and print them to the console. To create a
MySQLDataReader
, we call the ExecuteReader()
method of the MySqlCommand
object.The
Read()
method advances the data reader to the next record. Itreturns true
if there are more rows; otherwise false
.We can retrieve the value using the array index notation, or use a specificmethod to access column values in their native data types. The latter is moreefficient. This is the output of the example.
C# MySQL column headers
In the following example we print column headers with the data from a database table.
Program.cs
![Mysql Mysql](/uploads/1/3/7/2/137294587/127514985.png)
In the example, we select all rows from the
cars
table with theircolumn names.We get the names of the columns with the
GetName()
method of the reader. We print the data that was returned by the SQL statementto the terminal.
This is the output.
In this tutorial, we have shown how to program MySQL databases in C#.
List all C# tutorials.
Chapter 3. Installing and Launching MySQL Workbench
Table of Contents
- 3.1. Hardware Requirements
- 3.2. Software Requirements
- 3.3. Starting MySQL Workbench
- 3.3.1. Installing MySQL Workbench on Windows
- 3.3.2. Launching MySQL Workbench on Windows
- 3.3.3. Uninstalling MySQL Workbench on Windows
- 3.3.4. Installing MySQL Workbench on Linux
- 3.3.5. Launching MySQL Workbench on Linux
- 3.3.6. Uninstalling MySQL Workbench on Linux
- 3.3.7. Installing MySQL Workbench on Mac OS X
- 3.3.8. Launching MySQL Workbench on Mac OS X
- 3.3.9. Uninstalling MySQL Workbench on Mac OS X
- 3.4. Activation Procedure (Commercial Version)
MySQL Workbench is available for the following platforms:
Binary distributions of MySQL Workbench are avaliable for the above platforms. Source code distributions are also available as a
tar.gz
package, or an RPM package. The following sections explain the installation process for each of these platforms.
MySQL Workbench requires a current system to run smoothly. The minimum hardware requirements are:
- CPU: Intel Core or Xeon 3GHz (or Dual Core 2GHz) or equal AMD CPU
- Cores: Single (Dual/Quad Core is recommended)
- RAM: 4 GB (6 GB recommended)
- Graphic Accelerators: nVidia or ATI with support of OpenGL 1.5 or higher
- Display Resolution: 1280×1024 is recommended, 1024×768 is minimum.
The following operating systems are officially supported:
- Windows 7 (64-bit, Professional level or higher)
- Mac OS X 10.6.1+
- Ubuntu 9.10 (64bit)
- Ubuntu 8.04 (32bit/64bit)
For convenience the following builds are also available:
- Windows XP SP3, Vista
- Mac OSX (10.5 and 10.6) Intel
- Ubuntu 8.04 (i386/x64)
- Ubuntu 9.04 (i386/x64)
- Fedora 11 (i386/x64)
MySQL Workbench also has the following general requirements:
- The Microsoft .NET 3.5 Framework.
- Cairo 1.6.0 or later
- glib-2.10
- libxml-2.6
- libsigc++ 2.0
- pcre
- libzip
New update mac. For convenience the Windows libraries are available as the download “Dependencies for Compiling in Windows”.
On start up, the application checks the OpenGL version and selects between software and hardware rendering. To determine the rendering method that is being used, open the Help menu and choose the System Info submenu.
- 3.3.1. Installing MySQL Workbench on Windows
- 3.3.2. Launching MySQL Workbench on Windows
- 3.3.3. Uninstalling MySQL Workbench on Windows
- 3.3.4. Installing MySQL Workbench on Linux
- 3.3.5. Launching MySQL Workbench on Linux
- 3.3.6. Uninstalling MySQL Workbench on Linux
- 3.3.7. Installing MySQL Workbench on Mac OS X
- 3.3.8. Launching MySQL Workbench on Mac OS X
- 3.3.9. Uninstalling MySQL Workbench on Mac OS X
The procedure for launching MySQL Workbench depends on the platform. Generally, there are two ways to launch MySQL Workbench from the command line and from the graphical user interface of the host operating system. Using the command-line launching facility is useful when you want to customize some aspects of the way MySQL Workbench operates. Launching MySQL Workbench for each of the supported platforms is described in the following sections.
In addition to platform-specific command line options, MySQL Workbench has the following command line options:
--admin
- Launch MySQL Workbench and load the server instance specified.instance
--query
- Launch MySQL Workbench and load the connection specified.connection
--model
- Launch MySQL Workbench and load the model specified.modelfile
--script
- Launch MySQL Workbench and run the script specified.script
--run
- Launch MySQL Workbench and run the code snippet specified.code
--quit-when-done
- quits MySQL Workbench after --script or --run finishes.
MySQL Workbench may be installed using the Windows installer file or it may be installed manually from a ZIP file.
Installing MySQL Workbench Using the Installer
MySQL Workbench can be installed using the Windows Installer (
.msi
) installation package. The MSI package bears the name mysql-workbench-version
-win32.msi
, where version
indicates the MySQL Workbench version number. Installing MySQL Workbench using the installer requires either Administrator or Power User privileges. If you are using the ZIP file without an installer, you do not need Administrator or Power User privileges.
Improving the MySQL Installation Wizard depends on the support and feedback of users. If you find that the MySQL Installation Wizard is lacking some feature important to you, or if you discover a bug, please report it in our bugs database. To do this use the Report a Bug option under the Help menu.
- To install MySQL Workbench, right-click the MSI file and select the Install option from the pop-up menu, or simply double-click the file.
- In the Setup Type window you may choose a
Complete
orCustom
installation. To use all features of MySQL Workbench choose theComplete
option. - Unless you choose otherwise, MySQL Workbench is installed in
C:
, where%PROGRAMFILES%
MySQLMySQL Workbench 5.1edition_type
%PROGRAMFILES%
is the default directory for programs for your locale. The%PROGRAMFILES%
directory may beC:Program Files
orC:programme
.
Installing from the ZIP File
If you are having problems running the installer, as an alternative, you can download a ZIP file without an installer. That file is called
mysql-workbench-version
-win32.zip
. Using a ZIP utility, unpack it to the directory of your choice. You may also want to create a shortcut on your desktop or the quick launch bar. To install using the ZIP file, download the ZIP file to a convenient location and decompress the file. You can place the resulting directory anywhere on you system. You do not need to install or configure the application before using it.
To start MySQL Workbench on Windows select Start, Programs, MySQL and then select MySQL Workbench.
You may also start MySQL Workbench from the command line. To view the available command-line options, issue the command MySQLWorkbench -help | more from the MySQL Workbench installation directory. You will see the following output:
The MySQL Workbench version number is displayed followed by a usage message and then the options. Use the
-swrendering
option if your video card does not support OpenGL 1.5. The -version
option can be used to display the MySQL Workbench version number. The -grtversion
can be used to display the GRT shell version number. The other options are self-explanatory. When using command-line options that display output to a console window, namely
-help
and -version
, be sure that you pipe the output through the more command otherwise nothing will be displayed. The method for uninstalling MySQL Workbench will depend on how you install MySQL Workbench in the first place.
Rmoving MySQL Workbench when installed Using the Installer
- To uninstall MySQL Workbench, open the Control Panel and Choose Add or Remove Programs. Find the MySQL Workbench entry and choose the button. Doing this will remove MySQL Workbench.
- Any modules added to the
C:Program FilesMySQLMySQL Workbench
directory will not be deleted.version
modules
It is not possible to remove MySQL Workbench from the command line if you have installed MySQL Workbench using the installer. Although you can manually remove some of the compoentns There is no command-line option for removing MySQL Workbench.
Removing the MySQL Workbench directory manually will not remove all the files belonging to MySQL Workbench.
When installed from a ZIP file
If you installed MySQL Workbench using a ZIP file, to remove MySQL Workbench you can just delete the MySQL Workbench directory.
If you installed any additional modules within the
modules
directory and you want to keep them, make sure you copy those modules to a different directory before deleting the MySQL Workbench directory. There are several binary distributions of MySQL Workbench available for Linux. These include:
- Fedora 10 amd64 (RPM)
- Ubuntu 8.04 i386 (DEB)
- Ubuntu 8.10 amd64 (DEB)
In addition to the binary distributions, it is also possible to download the MySQL Workbench source code as a
tar.gz
or RPM package. Check the MySQL Workbench download page for the latest packages.
The procedure for installing on Linux depends on which Linux distribution you are using.
Installing DEB packages
On Ubuntu, and other systems that use the Debian package scheme, you can install MySQL Workbench using a command such as:
Note that
package
.deb
will be the MySQL Workbench package, for example, mysql-workbench-oss-version
_i386.deb
, where version
is the MySQL Workbench version number. You may be warned that certain libraries are not available, depending on what you already have installed. Install the required libraries and then install the MySQL Workbench package again.
Installing RPM packages
On RedHat-based systems, and other systems using the RPM package format, MySQL Workbench can be installed by a command such as:
Again, note that
package
.rpm
will be the MySQL Workbench package, for example, mysql-workbench-oss-version
-1fc10.x86_64.rpm
, and version
is the MySQL Workbench version number. Once MySQL Workbench has been installed it can be launched by selecting Applications, Programming, MySQL Workbench from the main menu.
MySQL Workbench can also be launched from the command line on Linux. Type the command:
This will display the available command-line options:
The procedure for uninstalling MySQL Workbench on Linux depends on the packe you are using.
Uninstalling DEB packages
For Debian packages the command is:
This does not remove the configuration files. If you wish to also remove the configuration files use:
Uninstalling RPM packages
To uninstall RPM packages use:
This does not remove the configuration files.
MySQL Workbench is available for Mac OS X and is distributed as a DMG file. The file is named
mysql-workbench-oss-version
-osx10.5-i686.dmg
, where version
is the MySQL Workbench version. To install MySQL Workbench on Mac OS X, simply download the file. Double-click the downloaded file. You will be presented with the installation screen:
Figure 3.1. MySQL Workbench Mac OS X Installation Screen
Drag the MySQL Workbench icon onto the Application icon as instructed. MySQL Workbench is now installed.
You can now launch MySQL Workbench from the Applications folder.
To launch MySQL Workbench on Mac OS X, simply open the Applications folder in the Finder, then double-click MySQL Workbench.
It is also possible to start MySQL Workbench from the command line:
A model file must be specified.
To uninstall MySQL Workbench for Mac OS X, simply locate MySQL Workbench in the Applications folder, right-click, and select Move to Trash. The application is uninstalled.