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# from table to CSV
require 'odbc'
require 'dbi'
filename = "./file.csv"
writeFile = File.open(filename,"w")
dbh = DBI.connect('DBI:ODBC:data_source_name', 'username', 'password')
sth = dbh.prepare("SELECT * FROM table WITH UR")
sth.execute
writeFile.puts sth.column_names.join(" ; ") #puts names on the top of each row
while row=sth.fetch do
	writeFile.puts row.join(" ; ") #puts lines from table
end
sth.finish
dbh.disconnect
writeFile.close

# from csv to excel
require 'win32ole'
xl = WIN32OLE.new('excel.application')
xl.workbooks.open(File.expand_path(filename))
xl.visible = true