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Connect to MySQL Data in Ruby
Connect to MySQL data in Ruby with ruby-dbi, dbd-odbc, and ruby-odbc.
The CData ODBC Driver for MySQL makes it easy to integrate connectivity to live MySQL data in Ruby. This article shows how to create a simple Ruby app that connects to MySQL data, executes a query, and displays the results.
Create an ODBC Connection to MySQL 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 MySQL 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, tables from all databases will be returned.
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 MySQL Data
Create a new Ruby file (for example: MySQLSelect.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 MySQL Source','','')
#execute a SELECT query and store the result set
resultSet = cnxn.execute("SELECT ShipName, Freight 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 MySQL data with Ruby. To do so, simply run your file from the command line:
ruby MySQLSelect.rb
Writing SQL-92 queries to MySQL allows you to quickly and easily incorporate MySQL data into your own Ruby applications. Download a free trial today!
Ready to get started?
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MySQL ODBC Driver
The MySQL ODBC Driver is a powerful tool that allows you to connect with live MySQL data, directly from any applications that support ODBC connectivity.
Access MySQL databases from virtually anywhere through a standard ODBC Driver interface.
