download.file('http://s3.amazonaws.com/redshift-downloads/drivers/RedshiftJDBC41-1.1.9.1009.jar','RedshiftJDBC41-1.1.9.1009.jar')
driver <- JDBC("com.amazon.redshift.jdbc41.Driver", "RedshiftJDBC41-1.1.9.1009.jar", identifier.quote="`")
url <- "um-prod.cqvgrk3j6yqr.eu-west-1.redshift.amazonaws.com:5439/warehouse?user=data_interview_user&password=ueB?A3YHgR"
conn <- dbConnect(driver, url)