get_DT.uris <- function() {
  DT.uris <- runQry("SELECT distinct source_uri from production.staging_raw_spotify_v2 WHERE NOT(source_uri = '' OR source_uri IS NULL)", cluster=4)
  assign(x="DT.uris", value=DT.uris, envir=globalenv())
  return(invisible(DT.uris))
}