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Connect to MariaDB Data in Ruby

Connect to MariaDB data in Ruby with ruby-dbi, dbd-odbc, and ruby-odbc.

The CData ODBC Driver for MariaDB makes it easy to integrate connectivity to live MariaDB data in Ruby. This article shows how to create a simple Ruby app that connects to MariaDB data, executes a query, and displays the results.

Create an ODBC Connection to MariaDB Data

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

The Server and Port properties must be set to a MariaDB server. If IntegratedSecurity is set to false, then User and Password must be set to valid user credentials. Optionally, Database can be set to connect to a specific database. If not set, the tables from all databases are reported.

Installing Ruby and Necessary Gems

If you do not have Ruby installed, refer to the Ruby installation page. With Ruby installed, you will need to install the ruby-dbi, dbd-odbc, and ruby-odbc gems:

gem install dbi gem install dbd-odbc gem install ruby-odbc

Create a Ruby App with Connectivity to MariaDB Data

Create a new Ruby file (for example: MariaDBSelect.rb) and open it in a text editor. Copy the following code into your file:

#connect to the DSN require 'DBI' cnxn = DBI.connect('DBI:ODBC:CData MariaDB Source','','') #execute a SELECT query and store the result set resultSet = cnxn.execute("SELECT ShipName, ShipCity FROM Orders") #display the names of the columns resultSet.column_names.each do |name| print name, "\t" end puts #display the results while row = resultSet.fetch do (0..resultSet.column_names.size - 1).each do |n| print row[n], "\t" end puts end resultSet.finish #close the connection cnxn.disconnect if cnxn

With the file completed, you are ready to display your MariaDB data with Ruby. To do so, simply run your file from the command line:

ruby MariaDBSelect.rb Writing SQL-92 queries to MariaDB allows you to quickly and easily incorporate MariaDB data into your own Ruby applications. Download a free trial today!