The following node is available in the Open Source KNIME predictive analytics and data mining platform version 2.7.1. Discover over 1000 other nodes, as well as enterprise functionality at http://knime.com.

Database Connector

Creates a database connection to the specified database. Note, this node does only open the connection to read the meta information, but does not read any data at this point.
Make sure you have your vendor-specific database driver registered in the KNIME preference page (section Database Driver). By default, the sun.jdbc.odbc.JdbcOdbcDriver (Windows and Linux) is only available.

Dialog Options

Database Driver
Enter the database driver here; it is a Java class (including the package path), for example: sun.jdbc.odbc.JdbcOdbcDriver Additional driver can be registered via KNIME's preference page (Database Driver).
Database URL
Enter the database name here, for example jdbc:odbc:database_name or jdbc:mysql://host:port/database_name
Workflow Credentials
If checked, the credentials (user and password) are used as defined on the workflow. The credential name links to the specified user and password. Those can be replaced or edit using the 'Workflow Credentials' menu available in the workflow context menu.
User Name
Your log-in user name for the database.
Password
Your log-in password for the database. Note, the password is de- and encrypted before handling it internally.
SQL Statement
Enter the SQL-like query here, for example SELECT * FROM table.
Additional SQL commands (create, drop, set parameter, etc.) can be arrange in front of the actual SELECT statement and are execute together line-by-line during configure and execute. Note, those additional SQL commands need to be separated by semicolon.
Database Browser
Click Fetch Metadata to connect to the database using the entered settings and to fetch all tables and display them grouped by type in a tree view. Click on any table to retrieve all contained columns. Double-click on a table or column to insert its name into the SQL query at the current cursor position.
Flow Variable List
The list contains the flow variables that are currently available at the node input. Double clicking any of the entries will insert the respective identifier at the current cursor position (replacing the selection, if any).

Ports

Output Ports
0 Database connection object
This node is contained in KNIME Base Nodes provided by KNIME GmbH, Konstanz, Germany.