# Example Derby-style table function

The following simple table function selects rows from a foreign database.

    package com.acme.hrSchema;

    import java.sql.*;

    /**
     * Sample Table Function for reading the employee table in an
     * external database.
     */
    public class EmployeeTable
    {
        public static ResultSet read()
            throws SQLException
        {
            Connection conn = getConnection();
            PreparedStatement ps = conn.prepareStatement(
                "select * from hrSchema.EmployeeTable" );

            return ps.executeQuery();
        }

        protected static Connection getConnection()
            throws SQLException
        {
            String EXTERNAL_DRIVER = "com.mysql.jdbc.Driver";

            try {
                Class.forName( EXTERNAL_DRIVER );
            }
            catch (ClassNotFoundException e) {
                throw new SQLException( "Could not find class "
                    + EXTERNAL_DRIVER );
            }

            Connection conn = DriverManager.getConnection(
                "jdbc:mysql://localhost/hr?user=root&password=mysql-passwd" );

            return conn;
        }
    }

Parent topic: Programming Derby-style table functions